MILLIWAVE TRANSMITTING DEVICE, MILLIWAVE RECEIVING DEVICE AND MILLIWAVE TRANSMISSION AND RECEPTION SYSTEM CAPABLE OF SIMPLIFYING WIRING OF A RECEIVING SYSTEM OF TERRESTRIAL BROADCASTING SERVICE AND SATELLITE BROADCASTING SERVICE
First Claim
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1. A milliwave transmission device for wirelessly transmitting a milliwave, comprising:
- a broadcaster-wave receiving circuit receiving a plurality of broadcast waves and converting said plurality of broadcast waves into broadcast signals respectively corresponding to said broadcast waves; and
a modulation circuit up-converting said broadcast signal into a milliwave for transmission and reception;
a milliwave transmitting circuit transmitting said milliwave such that broadcast signals corresponding to said plurality of broadcast waves are collectively transmitted at one time; and
at least one of a first amplifier provided between said broadcast-wave receiving circuit and said modulation circuit for providing a uniform output level of said broadcast signals, a second amplifier provided between said broadcast-wave receiving circuit and said modulation circuit for providing a higher output level of said broadcast signals on a high-frequency side than on a low-frequency side, and a third amplifier provided between said broadcast-wave receiving circuit and said modulation circuit for selectively enhancing among said broadcast waves an output level of a broadcast wave having a required C/N, as compared to another of said broadcast waves.
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Abstract
In conventionally receiving satellite broadcasting (BS, CS) and terrestrial broadcasting (VHF, UHF) services, transmitting the services to a plurality of TV receivers in an individual house results in complicated wiring and a community house is also limited in the number of installed TV receivers due to previously setting a distributor and thus requires an additional distributor to be installed when a TV receiver is additionally installed. The milliwave receiving and transmitting system of the present invention allows a broadcast signal to be transmitted and received indoors via indoor, wireless milliwave transmission without using any indoor wiring.
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Citations
25 Claims
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1. A milliwave transmission device for wirelessly transmitting a milliwave, comprising:
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a broadcaster-wave receiving circuit receiving a plurality of broadcast waves and converting said plurality of broadcast waves into broadcast signals respectively corresponding to said broadcast waves; and
a modulation circuit up-converting said broadcast signal into a milliwave for transmission and reception;
a milliwave transmitting circuit transmitting said milliwave such that broadcast signals corresponding to said plurality of broadcast waves are collectively transmitted at one time; and
at least one of a first amplifier provided between said broadcast-wave receiving circuit and said modulation circuit for providing a uniform output level of said broadcast signals, a second amplifier provided between said broadcast-wave receiving circuit and said modulation circuit for providing a higher output level of said broadcast signals on a high-frequency side than on a low-frequency side, and a third amplifier provided between said broadcast-wave receiving circuit and said modulation circuit for selectively enhancing among said broadcast waves an output level of a broadcast wave having a required C/N, as compared to another of said broadcast waves. - View Dependent Claims (2, 3, 4, 5, 6)
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7. The milliwave transmission device according to claim 7, wherein:
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said modulation circuit includes a first local oscillator for up-converting to said milliwave; and
said UHF-band radio reception circuit includes a second local oscillator for receiving and demodulating said UHF radio signal, and means synchronizing said second local oscillator and said first local oscillator mutually.
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8. A milliwave reception device, having a transmission device utilizing a frequency different from milliwave-band, for wirelessly receiving a milliwave indoors, comprising:
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a milliwave receiving circuit for receiving a milliwave transmitted and received indoors such that broadcast signals corresponding to a plurality of broadcast waves are collectively received at one time;
a broadcast-wave demodulation circuit down-converting said milliwave into a frequency band of a broadcast wave;
and a transmission circuit for transmitting signals at the frequency different from milliwave-band in order to control a polarized wave of at least one of the broadcast signals collectively received.
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- 9. The milliwave reception device according to claim 9, wherein said milliwave is an electronic wave of a frequency band of 60 GHz.
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11. The milliwave reception device according to claim 11, wherein said infrared-signal transmission circuit transmitting a polarized-wave control signal of a TV receiver as an infrared signal.
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13. The milliwave reception device according to claim 13, wherein
said UHF-band radio transmission circuit modulating a polarized-wave control signal of a TV receiver into a UHF radio signal for transmission.
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14. The milliwave reception device according to claim 14, wherein:
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said broadcast-wave demodulation circuit includes a first local oscillator for up-converting to said milliwave; and
said UHF-band radio transmission circuit includes a second local oscillator for modulating and transmitting said UHF radio signal, and circuit synchronizing said second and first local oscillators mutually.
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15. A milliwave transmitting and receiving system for wirelessly transmitting a milliwave, comprising:
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a milliwave transmission device for transmitting a milliwave signal in the wireless milliwave transmission, said milliwave transmission device including a broadcast-wave receiving circuit receiving a plurality of broadcast waves and converting said plurality of broadcast waves to broadcast signals respectively corresponding to said broadcast waves, a modulation circuit up-converting said broadcast signal into a milliwave for transmission and reception, a milliwave transmission circuit transmitting said milliwave such that broadcast signals corresponding to said plurality of broadcast waves are collectively transmitted at one time, and at least one of a first amplifier provided between said broadcast-wave receiving circuit and said modulation circuit for providing a uniform output level, of said broadcast signals, a second amplifier provided between said broadcast-wave receiving circuit and said modulation circuit for providing a higher output level of said broadcast signals on a high-frequency side than on a low-frequency side, and a third amplifier provided between said broadcast-wave receiving circuit and said modulation circuit for selectively enhancing among said broadcast waves an output level of a broadcast wave having a required C/N, as compared to another of said broadcast waves;
and a milliwave reception device for receiving a milliwave signal in the wireless milliwave transmission, said milliwave reception device including a milliwave receiving circuit for receiving a milliwave from said milliwave transmission circuit such that broadcast signals corresponding to said plurality of broadcast waves are collectively received at one time, and a broadcast-wave demodulation circuit down-converting said milliwave into a frequency band of a broadcast wave.
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16. The milliwave transmitting and receiving system according to claim 16, wherein:
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said broadcast-wave receiving circuit includes a frequency arranging circuit converting a frequency of said broadcast signal to eliminate an overlap of respective frequency bands of a plurality of broadcast signals respectively corresponding to said plurality of broadcast waves and to separate said frequency bands from a frequency of said milliwave by a predetermined frequency; and
said broadcast-wave demodulation circuit includes an inverse frequency arranging circuit converting said broadcast signal to a demodulatable frequency of a TV receiver. - View Dependent Claims (17, 19, 20, 21)
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18. The milliwave transmitting and receiving system according to claim 18, wherein said milliwave-signal distributor and relay also includes an amplifier.
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22. An indoor electrical appliance, comprising a milliwave transmission device mounted on the electrical appliance for wirelessly transmitting a milliwave indoors, said milliwave transmission device including a broadcast-wave receiving circuit receiving a plurality of broadcast waves and converting said plurality of broadcast waves into broadcast signals respectively corresponding to said broadcast waves, a modulation circuit up-converting said broadcast signal into a milliwave for indoor transmission and reception, and a milliwave transmitting circuit transmitting said milliwave.
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23. An indoor electrical appliance, comprising a milliwave receiving device mounted on the electrical appliance for wirelessly receiving a milliwave indoors, said milliwave receiving device including a milliwave receiving circuit for receiving a milliwave transmitted and received indoors, a broadcast-wave demodulation circuit down-converting said milliwave into a frequency band of a broadcast wave, and a transmission circuit for transmitting signals at the frequency different from milliwave band in order to control a polarized wave of at least one of the broadcast signals collectively received.
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24. A milliwave transmission device for wirelessly transmitting a milliwave, comprising:
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a broadcast-wave receiving circuit receiving a plurality of broadcast waves and converting said plurality of broadcast waves into broadcast signals respectively corresponding to said broadcast waves;
a modulation circuit up-converting said broadcast signal into a milliwave for transmission and reception;
a milliwave transmitting circuit transmitting said milliwave; and
at least one of a first amplifier provided between said broadcast-wave receiving circuit and said modulation circuit for providing a uniform output level of said broadcast signals, a second amplifier provided between said broadcast-wave receiving circuit and said modulation circuit for providing a higher output level of said broadcast signals on a high-frequency side than on a low-frequency side, and a third amplifier provided between said broadcast-wave receiving circuit and said modulation circuit for selectively enhancing among said broadcast waves an output level of a broadcast wave having a required C/N, as compared to another of said broadcast waves.
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25. A milliwave transmitting and receiving system for wirelessly transmitting a milliwave, comprising:
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a milliwave transmission device for transmitting a milliwave signal in the wireless milliwave transmission, said milliwave transmission device including a broadcast-wave receiving circuit receiving a plurality of broadcast waves and converting said plurality of broadcast waves to broadcast signals respectively corresponding to said broadcast waves, a modulation circuit up-converting said broadcast signal into a milliwave for transmission and reception, a milliwave transmission circuit transmitting said milliwave, and at least one of a first amplifier provided between said broadcast-wave receiving circuit and said modulation circuit for providing a uniform output level of said broadcast signals, a second amplifier provided between said broadcast-wave receiving circuit and said modulation circuit for providing a higher output level of said broadcast signals on a high-frequency side than on a low-frequency side, and a third amplifier provided between said broadcast-wave receiving circuit and said modulation circuit for selectively enhancing among said broadcast waves an output level of a broadcast wave having a required C/N, as compared to another of said broadcast waves;
and a milliwave reception device for receiving a milliwave signal in the wireless milliwave transmission, said milliwave reception device including a milliwave receiving circuit for receiving a milliwave from said milliwave transmission circuit, and a broadcast-wave demodulation circuit down-converting said milliwave into a frequency band of a broadcast wave.
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Specification
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Current AssigneeSharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
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Original AssigneeSharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
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InventorsSuematsu, Eiji, Sato, Hiroya
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Primary Examiner(s)Miller, John
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Assistant Examiner(s)Shang, Annan Q.
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Application NumberUS09/257,947Time in Patent Office2,321 DaysField of Search725/73, 725 78- 85, 455/41, 455/3.01, 455/3.03, 455/88, 455/117US Class Current725/78CPC Class CodesH04H 20/63 to plural spots in a confin...H04H 40/90 specially adapted for satel...H04H 60/90 Wireless transmission systemsH04N 7/106 for domestic distributionH04N 7/20 Adaptations for transmissio...
