Method and apparatus for connecting fiber optic lines to an information transmission line carrying two way signals
First Claim
1. A method for connecting a fiber optic line including one or more fiber optic cables and a fiber optic receiver to a transmission line carrying an information signal propagated from a transmitter via said fiber optic receiver toward a receiver in one direction and an external synchronizing signal from said receiver toward said transmitter in an opposite direction through a common connector connecting said fiber optic receiver with said transmission line and carrying bi-directional signals, the method comprising the steps of:
- transmitting a pulse signal having a voltage level higher than a maximum voltage level of said information signal or lower than a minimum voltage level of said information signal to said fiber optic receiver over said transmission line as an external synchronizing signal by using blanking portions of the information signals;
separating said pulse signal transmitted over the transmission line from said information signal by comparing said transmitted pulse signal to a reference signal or voltage having predetermined level; and
converting said separated pulse signal into optical signal for propagating said optical signal via said one or more fiber optic cables toward said transmitter.
1 Assignment
0 Petitions
Accused Products
Abstract
In a method and apparatus for connecting fiber optic lines and a fiber optic receiver and a fiber optic transmitter in an information transmission system carrying information signals propagated from a transmitter to a receiver in one direction and an external synchronizing signal from the receiver to the transmitter in the opposite direction, a fiber optic receiver includes a circuit for receiving an optical information signal from the transmitter and converting that signal into an electrical signal which is processed into an information signal outputted to the transmission line via a common connector. A pulse signal transmitted to the fiber optic receiver is retrieved and separated from the information signal. The pulse signal is an external synchronizing signal having a voltage level higher than the maximum level or lower than the minimum voltage level of the video signal. The pulse signal is injected into the information transmission line or the fiber optic line. Another circuit processes the separated pulse signal and converts it into an optical signal emitted through one or more fiber optic lines or cables towards the transmitter. The fiber optic transmitter includes a circuit which receives an information signal from the transmitter. This signal is converted into an optical signal emitted through the fiber optic cables to the receiver.
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Citations
241 Claims
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1. A method for connecting a fiber optic line including one or more fiber optic cables and a fiber optic receiver to a transmission line carrying an information signal propagated from a transmitter via said fiber optic receiver toward a receiver in one direction and an external synchronizing signal from said receiver toward said transmitter in an opposite direction through a common connector connecting said fiber optic receiver with said transmission line and carrying bi-directional signals, the method comprising the steps of:
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transmitting a pulse signal having a voltage level higher than a maximum voltage level of said information signal or lower than a minimum voltage level of said information signal to said fiber optic receiver over said transmission line as an external synchronizing signal by using blanking portions of the information signals; separating said pulse signal transmitted over the transmission line from said information signal by comparing said transmitted pulse signal to a reference signal or voltage having predetermined level; and
converting said separated pulse signal into optical signal for propagating said optical signal via said one or more fiber optic cables toward said transmitter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for connecting a fiber optic line including one or more fiber optic cables and a fiber optic transmitter to a transmission line carrying an information signal from a transmitter toward a receiver via said fiber optic transmitter in one direction and an external synchronizing signal from said receiver via said fiber optic transmitter toward said transmitter in an opposite direction through a common connector connecting said fiber optic transmitter with said transmission line and carrying bi-directional signals, the method comprising the steps of:
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receiving an optical signal emitted over said one or more fiber optic cables to said fiber optic transmitter as an external synchronizing signal and converting said received optical signal into a pulse signal having a voltage level higher than a maximum voltage level of said information signal or lower than a minimum voltage level of said information signal; and applying said pulse signal to said transmission line for propagating said pulse signal to said transmitter as an external synchronizing signal by using blanking portions of the information signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method for connection fiber optic line consisting of one or more fiber optic cables and fiber optic receiver to a transmission line carrying video signal propagated from a transmitter via said fiber optic receiver toward a receiver in one direction and control signal from said receiver toward said transmitter in an opposite direction through a common connector connecting said fiber optic receiver with said transmission line and carrying bi-directional signals, the method comprising the steps of:
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generating and feeding a control signal during one or more predetermined horizontal scanning periods of said video signal to said fiber optic receiver over said transmission line during a vertical blanking portion of said video signal; separating said control signal propagated over the transmission line from said video signal by detecting an envelope of said control signal during said predetermined one or more horizontal scanning periods of said video signal; and converting said separated control signal into an optical signal for propagating said optical signal via said one or more fiber optic cables toward said transmitter. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
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31. A method for connection a fiber optic line including one or more fiber optic cables and a fiber optic transmitter to a transmission line carrying a video signal from a transmitter toward a receiver via said fiber optic transmitter in one direction and a control signal from said receiver via said fiber optic transmitter toward said transmitter in an opposite direction through a common connector connecting said fiber optic transmitter with said transmission line and carrying bi-directional signals, the method comprising the steps of:
emitting optical signal through said one or more fiber optic cables to said fiber optic transmitter during one or more predetermined horizontal scanning periods of said video signal as a signal for controlling said transmitter;
receiving and converting said emitted optical signal into said control signal for propagating said control signal to said transmitter by injecting said control signal to said transmission line during said one or more predetermined horizontal scanning periods of vertical blanking portions of said video signal.- View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39)
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40. A method for introducing a fiber optic line including one or more fiber optic cables terminated by a fiber optic receiver on one end and a fiber optic transmitter on the other end between first and second sections of a transmission line in combination with a receiver connected via said first section of said transmission line and via a first common connector to said fiber optic receiver and a transmitter connected via said second section of said transmission line and via a second common connector to said fiber optic transmitter, for propagating an information signal from said transmitter toward said receiver in one direction and an external synchronizing signal from said receiver toward said transmitter in an opposite direction, through said first and second common connectors carrying bi-directional signals, the method comprising the steps of:
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transmitting a pulse signal having a voltage level higher than a maximum voltage level of said information signal or lower than a minimum voltage level of said information signal to said fiber optic receiver over said first section of said transmission line as an external synchronizing signal by using blanking portions of the information signals; separating said pulse signal transmitted over said first section of said transmission line from said information signal by comparing said transmitted signal to a reference signal or voltage having predetermined level; and
converting said separated pulse signal into an optical signal for emitting said optical signal via said one or more fiber optic cables toward said fiber optic transmitter;receiving and reconverting said optical signal into a pulse signal having a voltage level higher than a maximum voltage level of said information signal or lower than a minimum voltage level of said information signal; and injecting said reconverted pulse signal into said second section of said transmission line for propagating said reconverted pulse signal toward said transmitter over said transmission line as an external synchronizing signal by using blanking portions of the information signals. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48, 49)
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50. A method for introducing a fiber optic line including one or more fiber optic cables terminated by a fiber optic receiver on one end and a fiber optic transmitter on the other end between first and second sections of a transmission line in combination with a receiver connected via said first section of said transmission line and via a first common connector to said fiber optic receiver and a transmitter connected via said second section of said transmission line and via a second common connector to said fiber optic transmitter for propagating a video signal from said transmitter toward said receiver in one direction and a control signal from said receiver toward said transmitter in an opposite direction, through said common connectors carrying bi-directional signals, comprising the steps of:
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generating and feeding a control signal during one or more predetermined horizontal scanning periods of said video signal to said fiber optic receiver over said first section of said transmission line during a vertical blanking portion of said video signal; separating said control signal propagated over said transmission line from said video signal by detecting an envelope of said control signal during said predetermined one or more horizontal scanning periods of said video signal; converting said separated control signal into an optical signal for emitting said optical signal via said one or more fiber optic cables toward said fiber optic transmitter receiving said emitted optical signal; and reconverting said emitted optical signal into said control signal for propagating said control signal to said transmitter by injecting said control signal to said transmission line during said one or more predetermined horizontal scanning periods of vertical blanking portions of said video signal. - View Dependent Claims (51, 52, 53, 54, 55, 56, 57, 58)
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59. A method for connecting a fiber optic line including one or more fiber optic cables and a fiber optic receiver to a transmission line carrying a video signal propagated from a transmitter via said fiber optic receiver toward a receiver in one direction and an external synchronizing along with control signals from said receiver toward said transmitter in an opposite direction through a common connector connecting said fiber optic receiver with said transmission line and carrying bi-directional signals, the method comprising the steps of;
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generating two distinct signals;
of which one is a pulse signal having a voltage level higher than a maximum voltage level of said video signal or lower than a minimum voltage level of said video signal as said external synchronizing signal, and another is a control signal having predetermined different voltage levels distinct from those of said pulse signal level for feeding said pulse signal and said control signal to said transmission line at distinct different times;wherein said control signal generated during one or more predetermined horizontal scanning periods of said video signal, and said pulse signal are both fed to said fiber optic receiver over said transmission line by using vertical blanking portions of said video signal; separating said pulse signal and said control signal propagated over said transmission line from said video signal by comparing said propagated signal to a reference signal or voltage having a predetermined level and by time gating and detecting an envelope of said control signal during said predetermined one or more horizontal scanning periods of said video signal; and converting said separated pulse signal and said separated control signal into optical signals for emitting said optical signals via said one or more fiber optic cables toward said transmitter. - View Dependent Claims (60, 61, 62, 63, 64, 65, 66, 67, 68)
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69. A method for connecting a fiber optic line including one or more fiber optic cables and a fiber optic transmitter to a transmission line carrying a video signal from a transmitter toward a receiver via said fiber optic transmitter in one direction and an external synchronizing along with control signals from said receiver via said fiber optic transmitter toward said transmitter in an opposite direction through common connector connecting said fiber optic transmitter with said transmission line and carrying bi-directional signals, comprising the steps of:
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receiving an optical signals emitted over said one or more fiber optic cables to said fiber optic transmitter composed of two distinct levels and distinct time incidence, a first level and time incidence for said external synchronizing signal and second level and time incidence for said control signals; and
converting a received first level and time incidence optical signal into a pulse signal having a voltage level higher than a maximum voltage level of said video signal or lower than a minimum voltage level of said video signal and converting a received second level and time incidence optical signal into a control signal during one or more predetermined horizontal scanning periods of said video signal; andapplying said converted pulse signal and said converted control signal to said transmission line for propagating both said pulse signal and said control signal to said transmitter as an external synchronizing signal along with said control signal by using vertical blanking portions of said video signal. - View Dependent Claims (70, 71, 72, 73, 74, 75, 76, 77, 78)
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79. A method for introducing a fiber optic line including one or more fiber optic cables terminated by a fiber optic receiver on one end and a fiber optic transmitter on the other end between first and second sections of a transmission line in combination with a receiver connected via a first section of said transmission line and via a first common connector to said fiber optic receiver and a transmitter connected via a second section of said transmission line and via a common connector to said fiber optic transmitter for propagating a video signal from said transmitter toward said receiver in one direction and external synchronizing along with control signals from said receiver toward said transmitter in the opposite direction, through said common connectors carrying bi-directional signals, comprises the steps of:
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generating two distinct signals;
a pulse signal having a voltage level higher than a maximum voltage level of said video signal or lower than a minimum voltage level of said video signal as said external synchronizing signal, and another is a control signal having a predetermined different voltage level distinct from that of said pulse signal, for feeding said pulse signal and said control signal to said first section of said transmission line at distinct different times, wherein said control signal generated during one or more predetermined horizontal scanning periods of said video signal and said pulse signal are both fed to said fiber optic receiver over said transmission line by using vertical blanking portions of said video signal;separating said pulse signal and said control signal propagated over said transmission line from said video signal by comparing said propagated signal to a reference signal or voltage having a predetermined level and by time gating and detecting an envelope of said control signal during said predetermined one or more horizontal scanning periods of said video signal; and converting said separated pulse signal and said separated control signal into optical signals for emitting said optical signals via said one or more fiber optic cables toward said fiber optic transmitter; receiving said optical signals composed of two distinct levels and distinct time incidence, first level and time incidence for said external synchronizing signal and second level and time incidence for said control signals and converting said received first level and time incidence optical signal into a pulse signal having a voltage level higher than a maximum voltage level of said video signal or lower than a minimum voltage level of said video signal and said second level and time incidence optical signal into said control signal during one or more predetermined horizontal scanning periods of said video signal; and applying said converted pulse signal and said converted control signal to said transmission line for propagating both said pulse signal and said control signal to said transmitter as an external synchronizing signal along with control signal by using vertical blanking portions of the video signal. - View Dependent Claims (80, 81, 82, 83, 84, 85, 86, 87, 88)
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89. A fiber optic receiver apparatus for connecting one or more fiber optic cables and a fiber optic receiver to a transmission line carrying an information signal propagated from a transmitter via said one or more fiber optic cables and via said fiber optic receiver toward a receiver in one direction and an external synchronizing signal from said receiver toward said transmitter in an opposite direction through a common connector connecting said fiber optic receiver with said transmission line and carrying bi-directional signals, the apparatus comprising:
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a circuit for receiving an optical information signal from said transmitter via said one or more fiber optic cables and for converting said optical information signal into electrical signal; and a circuit for processing said electrical signal into said information signal and for outputting said information signal via said common connector to said transmission line; a circuit for retrieving a pulse signal having a voltage level higher than a maximum voltage level of said information signal or lower than a minimum voltage level of said information signal fed from said receiver through said transmission line via said common connector as an external synchronizing signal during blanking portions of said information signals, and for separating said pulse signal from said information signal by comparing a bi-directional signal to a reference signal or voltage having a predetermined level; a circuit for processing said separated pulse signal; and a circuit for converting said processed pulse signal into an optical signal for emitting said optical signal via said one or more fiber optic cables toward said transmitter. - View Dependent Claims (90, 91, 92, 93, 94, 95, 96, 97, 98, 176, 177, 178, 179, 180, 181, 182, 183, 184)
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99. A fiber optic transmitter apparatus for connecting one or more fiber optic cables and a fiber optic transmitter to a transmission line carrying an information signal from a transmitter toward a receiver via said fiber optic transmitter and via said one or more fiber optic cables in one direction and for propagating in an opposite direction an external synchronizing signal fed from said receiver via said fiber optic cables and via said fiber optic transmitter toward said transmitter through a common connector connecting said fiber optic transmitter with said transmission line and carrying bi-directional signals, the apparatus comprising;
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a circuit for receiving an information signal from said transmitter via said transmission line and via said common connector; a circuit for converting said received information signal into an optical signal and for emitting said optical signal through said one or more fiber optic cables to said receiver; a circuit for receiving an optical external synchronizing signal from said receiver via said one or more fiber optical cables and for converting said optical external synchronizing signal into an electrical signal and a circuit for processing said electrical signal into a pulse signal having a voltage level higher than a maximum voltage level of said information signal or lower than a minimum voltage level of said information signal and for feeding said pulse signal as an external synchronizing signal during blanking portions of said information signals to said transmission line via said common connector. - View Dependent Claims (100, 101, 102, 103, 104, 105, 106, 107, 108, 202, 203, 204, 205, 206)
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109. A fiber optic receiver apparatus for connecting one or more fiber optic cables and a fiber optic receiver to a transmission line carrying a video signal propagated from a transmitter via said one or more fiber optic cables and via said fiber optic receiver toward a receiver in one direction and a control signal from said receiver toward said transmitter in an opposite direction through a common connector connecting said fiber optic receiver with said transmission line and carrying bi-directional signals, the apparatus comprising:
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a circuit for receiving an optical video signal from said transmitter via said one or more fiber optic cables and for converting said optical video signal into an electrical signal; a circuit for processing said electrical signal into said video signal and for outputting said video signal via said common connector to said transmission line; a circuit for retrieving said control signal generated by said receiver during one or more predetermined horizontal scanning periods of said video signal and fed to said fiber optic receiver over said transmission line through said common connector during a vertical blanking portion of said video signal and for separating said control signal propagated over the transmission line from said video signal by time gating and detecting an envelope of said control signal during said predetermined one or more horizontal scanning periods of said video signal; a circuit for processing said separated control signal and a circuit for converting said separated control signal into an optical signal for emitting said optical signal via said one or more fiber optic cables toward said transmitter. - View Dependent Claims (110, 111, 112, 113, 114, 115, 116, 117, 185, 186, 187, 188, 189, 190, 191, 192)
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118. A fiber optic transmitter apparatus for connecting one or more fiber optic cables and a fiber optic transmitter to a transmission line carrying a video signal from a transmitter toward a receiver via said fiber optic transmitter and via said one or more fiber optic cables in one direction and for propagating in an opposite direction a control signal fed from said receiver via said fiber optic cables and via said fiber optic transmitter toward said transmitter through a common connector connecting said fiber optic transmitter with said transmission line and carrying bi-directional signals, the apparatus comprising;
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a circuit for receiving a video signal from said transmitter via said transmission line and via said common connector; and a circuit for converting said received video signal into an optical signal and for emitting said optical signal through said one or more fiber optic cables to said receiver; a circuit for receiving an optical control signal from said receiver via said one or more fiber optic cables and for converting said optical control signal into an electrical signal; and a circuit for processing said electrical signal into said control signal during one or more predetermined horizontal periods of said video signal and for feeding said control signal during blanking portions of said video signals to said transmission line via said common connector. - View Dependent Claims (119, 120, 121, 122, 123, 124, 125, 126, 207, 208, 209, 210, 211, 212, 213, 231, 232, 233)
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127. A fiber optic receiver apparatus for connecting one or more fiber optic cables and to a fiber optic receiver to a transmission line carrying a video signal propagated from a transmitter via said one or more fiber optic cables and via said fiber optic receiver toward a receiver in one direction and external synchronizing signal along with a control signal from said receiver toward said transmitter in the opposite direction through common connector connecting said fiber optic receiver with said transmission line and carrying bi-directional signals, comprising;
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a circuit for receiving an optical video signal from said transmitter via said one or more fiber optical cables and for converting said optical video signal into an electrical signal; a circuit for processing said electrical signal into said video signal and for outputting said video signal via said common connector to said transmission line; a retrieving circuit for retrieving said external synchronizing signal along with said control signal generated by said receiver, wherein said external synchronizing signal is a pulse signal having a voltage level higher than a maximum voltage level of said video signal or lower than a minimum voltage level of said video signal and said control signal is a signal having predetermined different voltage levels distinct from those of said pulse signal level and is generated at a distinctly different time from said pulse signal and wherein said control signal is generated during one or more predetermined horizontal scanning periods of said video signal and wherein said pulse signal and said control signal are both fed to said fiber optic receiver over said transmission line during vertical blanking portions of said video signal; wherein said retrieving circuit separating said pulse signal and said control signal from said video signal by comparing said bi-directional signals to a reference signal or voltage having a predetermined level and by time gating and detecting an envelope of said control signal during said predetermined one or more horizontal scanning periods of said video signal; and a circuit for converting said separated pulse signal and said separated control signal into optical signals for emitting said optical signals via said one or more fiber optic cables toward said transmitter. - View Dependent Claims (128, 129, 130, 131, 132, 133, 134, 135, 136, 193, 194, 195, 196, 197, 198, 199, 200, 201)
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137. A fiber optic transmitter apparatus for connecting one or more fiber optic cables and a fiber optic transmitter to a transmission line carrying a video signal from a transmitter toward a receiver via said fiber optic transmitter and via said one or more fiber optic cables in one direction and for propagating in an opposite direction an external synchronizing signal along with a control signal fed from said receiver via said fiber optic cables and via said fiber optic transmitter toward said transmitter through a common connector connecting said fiber optic transmitter with said transmission line and carrying bi-directional signals, the apparatus comprising;
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a circuit for receiving a video signal from said transmitter via said transmission line and via said common connector; and a circuit for converting said received video signal into an optical signal and for emitting said optical signal through said one or more fiber optic cables to said receiver; a circuit for receiving an optical external synchronizing signal and control signal from said receiver via said one or more fiber optic cables said received signals being composed of two distinct optical signals, and said receiving circuit converting said two distinct optical signals into two distinct electrical signals; and a circuit for processing said electrical signal into two distinct signals; wherein said external synchronizing signal is a pulse signal having a voltage level higher than a maximum voltage level of said video signal or lower than a minimum voltage level of said video signal and said control signal is a signal having predetermined different voltage levels distinct from said pulse signal level and is generated at distinctly different time from the said pulse signal and wherein said control signal is generated during one or more predetermined horizontal scanning periods of said video signal and wherein said circuit for processing said electrical signal feeds said pulse signal and said control signal to said transmission line via said common connector during vertical blanking portions of said video signal. - View Dependent Claims (138, 139, 140, 141, 142, 143, 144, 145, 146, 214, 215, 216, 217, 218, 219, 220, 221)
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147. A fiber optic system connecting apparatus comprising:
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a fiber optic receiver; a fiber optic transmitter; and one or more fiber optic cables connected to said fiber optic receiver on one end and to said fiber optic transmitter on the other end for connecting a fiber optic system to first and second sections of a transmission line in combination with a receiver connected via a first section of said transmission line and via a first common connector to said fiber optic receiver and a transmitter connected via a second section of said transmission line and via a second common connector to said fiber optic transmitter for propagating an information signal from said transmitter toward said receiver in one direction and an external synchronizing signal from said receiver toward said transmitter in the opposite direction, through said first and second common connectors carrying bi-directional signals; a fiber optic transmitter including; a circuit for receiving an information signal from said transmitter via said second section of said transmission line and via said common connector; and a circuit for converting said received information signal into optical signal and for emitting said optical signal through said one or more fiber optic cables to said fiber optic receiver; a circuit for receiving optical external synchronizing signal from said fiber optic receiver via said one or more fiber optic cables and for converting said optical external synchronizing signal into an electrical signal; and a circuit for processing said electrical signal into a pulse signal having a voltage level higher than a maximum voltage level of said information signal or lower than a minimum voltage level of said information signal and for feeding said pulse signal as an external synchronizing signal during blanking portions of said information signal to said second section of said transmission line via said second common connector; said fiber optic receiver including; a circuit for receiving an optical information signal from said fiber optic transmitter via said one or more fiber optic cables and for converting said optical information signal into an electrical signal; a circuit for processing said electrical signal into said information signal and for outputting said information signal via first said common connector to said first section of said transmission line; a circuit for retrieving a pulse signal having a voltage level higher than a maximum voltage level of said information signal or lower than a minimum voltage level of said information signal fed from said receiver through said first section of said transmission line via first said common connector as an external synchronizing signal during blanking portions of said information signal, and for separating said pulse signal from said information signal by comparing said bi-directional signal to a reference signal or voltage having predetermined level; a circuit for processing said separated pulse signal and a circuit for converting said processed pulse signal into optical signal for emitting said optical signal via said one or more fiber optic cables toward said fiber optic transmitter. - View Dependent Claims (148, 149, 150, 151, 152, 153, 154, 155, 156)
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157. A fiber optic system connecting apparatus comprising a fiber optic receiver, a fiber optic transmitter and one or more fiber optic cables to be connected to said fiber optic receiver on one end and to said fiber optic transmitter on the other end for connecting said fiber optic system to first and second sections of a transmission line in combination with a receiver connected via a first section of said transmission line and via a first common connector to said fiber optic receiver and a transmitter connected via a second section for said transmission line and via a second common connector to said fiber optic transmitter for propagating a video signal from said transmitter toward said receiver in one direction and a control signal from said receiver toward said transmitter in an opposite direction, through said first and second common connectors carrying bi-directional signals,
said fiber optic transmitter including: -
a circuit for receiving a video signal from said transmitter via said second section of said transmission line and via said second common connector; a circuit for converting said received video signal into an optical signal and for emitting said optical signal through said one or more fiber optic cables to said fiber optic receiver; a circuit for receiving optical control signal from said fiber optic receiver via said one or more fiber optic cables and for converting said optical control signal into electrical signal; and a circuit for processing said electrical signal into said control signal during one or more predetermined horizontal periods of said video signal and for feeding said pulse signal as an external synchronizing signal during blanking portions of said information signals to said second of said transmission line via said second common connector; said fiber optic receiver including; a circuit for receiving an optical video signal from said fiber optic transmitter via said one or more fiber optic cables and or converting said optical video signal into an electrical signal; a circuit for processing said electrical signal into said video signal and for outputting said video signal via said first common connector to said first section of said transmission line; a circuit for retrieving said control signal generated by said receiver during one or more predetermined horizontal scanning periods of said video signal and fed to said fiber optic receiver through said first section for said transmission line via said first common connector during the vertical blanking portion of said video signal and for separating said control signal propagated over the transmission line from said video signal by time gating and detecting an envelope of said control signal during said predetermined one or more horizontal scanning periods of said video signal; a circuit for processing said separated control signal; and a circuit for converting said processed control signal into optical signal for emitting said optical signal via said one or more fiber optic cables toward said fiber optic transmitter. - View Dependent Claims (158, 159, 160, 161, 162, 163, 164, 165)
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166. A fiber optic system connecting apparatus comprising a fiber optic receiver;
- a fiber optic transmitter one or more fiber optic cables to be connected to said fiber optic receiver on one end and to a fiber optic transmitter on the other end for connecting said fiver optic system to first and second sections of a transmission line in combination with a receiver connected via said first section of said transmission line and via common connector to said fiber optic receiver and a transmitter connected via said second section of said transmission line and via common connector to said fiber optic transmitter for propagating video signal from said transmitter toward said receiver in one direction and an external synchronizing signal along with a control signal from said receiver toward said transmitter in an opposite direction, through said first and second common connectors carrying bi-directional signals,
said fiber optic transmitter including; a circuit for receiving a video signal from said transmitter via said second section of said transmission line and via said second common connector; a circuit for converting said received video signal into an optical signal and for emitting said optical signal through said one or more fiber optic cables to said fiber optic receiver; a circuit for receiving an optical external synchronizing signal and a control signal as two distinct optical signals from said fiber optic receiver via said one or more fiber optic cables and for converting said two distinct optical signals into two distinct electrical signals and a circuit for processing said electrical signals into two distinct signals;
wherein said external synchronizing signal is a pulse signal having a voltage level higher than a maximum voltage level of said video signal or lower than a minimum voltage level of said video signal and said control signal is a signal having predetermined different voltage levels distinct from those of said pulse signal level and is generated at distinctly different time from said pulse signal and wherein said control signal is generated during one or more predetermined horizontal scanning periods of said video signal and wherein said circuit for processing said electrical signal feeds said pulse signal and said control signal to said second section of said transmission line via said common connector during vertical blanking portions of said video signal;said fiber optic receiver including; a circuit for receiving an optical video signal from said fiber optic transmitter via said one or more fiber optic cables and for converting said optical video signal into an electrical signal; a circuit for processing said electrical signal into said video signal and for outputting said video signal via said first common connector to said first section of said transmission line; and a retrieving circuit for retrieving said external synchronizing signal and said control signal generated by said receiver compose as two distinct signals, wherein, said external synchronizing signal is a pulse signal having a voltage level higher than a maximum voltage level of said video signal or lower than a minimum voltage level of said video signal and said control signal is a signal having predetermined different voltage levels distinct from the level of said pulse signal and is generated at distinctly different time from that of said pulse signal and wherein said control signal is generated during one or more predetermined horizontal scanning periods of said video signal and wherein said pulse signal and said control signal are both fed to said fiber optic receiver over said first section of said transmission line during vertical blanking portions of said video signal; wherein said retrieving circuit separates said pulse signal and said control signal from said video signal by comparing said bi-directional signals to a reference signal or voltage having predetermined level and by time gating and detecting the envelope of said control signal during said predetermined one or more horizontal scanning periods of said video signal; and a circuit converting said separated pulse signal and said separated control signal into optical signals for emitting said optical signals via said one or more fiber optic cables toward said fiber optic transmitter. - View Dependent Claims (167, 168, 169, 170, 171, 172, 173, 174, 175)
- a fiber optic transmitter one or more fiber optic cables to be connected to said fiber optic receiver on one end and to a fiber optic transmitter on the other end for connecting said fiver optic system to first and second sections of a transmission line in combination with a receiver connected via said first section of said transmission line and via common connector to said fiber optic receiver and a transmitter connected via said second section of said transmission line and via common connector to said fiber optic transmitter for propagating video signal from said transmitter toward said receiver in one direction and an external synchronizing signal along with a control signal from said receiver toward said transmitter in an opposite direction, through said first and second common connectors carrying bi-directional signals,
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222. A receiver apparatus for connecting a plurality of transmitters through common connectors which are included in an information signal transmission system for propagating an information signal toward a receiver in one direction and an external synchronizing signal toward said transmitters in an opposite direction via transmission lines and/or fiber optic cables through fiber optic receivers and/or fiber optic transmitters and/or directly to said transmitters in combination with a selector for selectively connecting any one of information signals and/or for switching over from one of said information signals to another, the apparatus comprising;
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a circuit for generating a pulse signal having a voltage level higher than a maximum voltage level of said information signal or lower than a minimum voltage level of said information signal as an external synchronizing signal during blanking portions of said information signals; a selector circuit having plurality of input poles for receiving plurality of information signals from said plurality of transmitter and for selectively outputting an information signal; one or more common connectors associated with said transmission lines each for connecting one of said fiber optic receivers or said transmitters to one of said input poles and/or one or more fiber optic connectors each for connecting one of said fiber optic transmitters or said transmitters to one of said input poles, wherein each of said fiber optic connectors provides for connecting one or more fiber optic cables; a circuit for receiving an optical information signal from said fiber optic transmitter or from said transmitters via said one or more fiber optic cables and for converting said optical information signal into an electrical signal; a circuit for processing said electrical signal into said information signal and for outputting said information signal to an input pole of said selector circuit; a circuit for processing said pulse signal; and a circuit for converting said processed pulse signal into optical signal for emitting said optical signal via said one or more fiber optic cables toward said fiber optic transmitter or toward said transmitter during blanking portions of said information signal; and a circuit for feeding said pulse signal to said one or more transmission lines for propagating said external synchronizing signal toward said fiber optic receiver and/or toward said transmitter during blanking portions of said information signal. - View Dependent Claims (223, 224, 225, 226)
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227. A receiver apparatus for connecting a plurality of transmitters through common connectors which are included in a video signal transmission system for propagating a video signal toward a receiver in one direction and a control signal toward said transmitters in an opposite direction via transmission lines and/or fiber optic cables via fiber optic receivers and/or fiber optic transmitters and/or directly to said transmitters in combination with a selector for selectively connecting any one of video signals or for switching over from one of said video signals to another, the apparatus comprising;
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a circuit for generating a control signal during one or more predetermined horizontal scanning periods of said video signal; a selector circuit having a plurality of input poles for receiving a plurality of video signals from said plurality of transmitters and for selectively outputting said video signal; one or more common connectors associated with said transmission lines each for connecting one of said fiber optic receivers or said transmitters to one of said input pole; and
/or one or more plurality of fiber optic connectors each for connecting one of said fiber optic transmitters or said transmitters to one of said input poles;
wherein each of said fiber optic connectors provides for connecting one or more fiber optic cables;a circuit for receiving an optical video signal from one of said fiber optic transmitters or from one of said transmitters via said one or more fiber optic cables and for converting said optical video signal into an electrical signal and a circuit for processing said electrical signal into said video signal and for outputting said video signal to an input pole of said selector circuit; a circuit for processing said control signal; a circuit for converting said processed control signal into an optical signal for emitting said optical signal via said one or more fiber optic cables toward said fiber optic transmitter or toward said transmitter during a vertical blanking period of said video signal; and a circuit for feeding said control signal to said one or more transmission lines for propagating said control signal toward fiber optic receiver and/or said transmitters during the vertical blanking period of said video signal. - View Dependent Claims (228, 229, 230)
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234. A receiver apparatus for connecting a plurality of transmitters through common connectors which are included in a video signal transmission system for propagating video signals toward a receiver in one direction and an external synchronizing signal and a control signal toward said transmitters in an opposite direction via transmission lines and/or fiber optic cables via fiber optic receivers and/or fiber optic transmitters and/or directly to said transmitters in combination with a selector for selectively connecting any one of said video signals and/or for switching over from one of said video signals to another, the apparatus comprising:
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a circuit for generating a pulse signal having a voltage level higher than a maximum voltage level of said video signal or lower than a minimum voltage level of said video signal as an external synchronizing signal during blanking portions of said video signal; a circuit for generating a control signal during one or more predetermined horizontal scanning periods of said video signal; a selector circuit having a plurality of input poles for receiving a plurality of video signals from said plurality of transmitters and for selectively outputting a video signal; one or more common connectors associated with said transmission lines each for connecting one of said fiber optic receivers or said transmitters to one of said input poles and/or one or more fiber optic connectors each for connecting one of said fiber optic transmitters or said transmitters to one of said input poles;
wherein each of said fiber optic connectors provides for connecting one or more fiber optic cables;a circuit for receiving an optical video signal from one of said fiber optic transmitters or from said transmitters via said one or more fiber optic cables and for converting said optical video signal into an electrical signal; a circuit for processing said electrical signal into said video signal and for outputting said video signal to an input pole of said selector circuit; a circuit for processing said pulse signal and said control signal; a circuit for converting said processed pulse and control signals into optical signals for emitting said optical signals via said one or more fiber optic cables toward said fiber optic transmitter or toward said transmitter during vertical blanking portions of said video signals; and one or more circuits for feeding said pulse signal and said control signal to said one or more transmission lines for propagating said external synchronizing signal and said control signal toward said transmitters and/or toward said fiber optic receivers during vertical blanking portions of said video signal. - View Dependent Claims (235, 236, 237, 238, 239, 240, 241)
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Specification