Signal transmission method between television camera and video apparatus and apparatus using the method
First Claim
1. A method for signal transmission between a television camera and a video apparatus which are connected to each other through a transmission cable, comprising the steps of:
- multiplexing a video signal and first control signals which are obtained from said television camera, by using a first time-division multiplexing circuit, to generate a first serial signal;
transmitting said first serial signal by using a predetermined first signal line in said cable;
transmitting a second control signal from said television camera to said video apparatus by using a predetermined second signal line in said cable;
separating said first serial signal obtained from said first signal line into a video signal and said first control signal by a first de-multiplexing circuit of said video apparatus; and
transmitting third control signals from said video apparatus to said television camera by using third and fourth signal lines in said cable.
1 Assignment
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Accused Products
Abstract
A method and apparatus for transmitting a signal between a television camera and a video apparatus. When time-division multiplexing parallel image signals and transmitting them as a serial signal from the camera side to the video apparatus side, a control signal destined from the camera to the video apparatus is also time-division multiplexed. Furthermore, a plurality of kinds of trigger signals may be time-division multiplexed into one serial signal and transmitted from the video apparatus to the camera.
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Citations
15 Claims
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1. A method for signal transmission between a television camera and a video apparatus which are connected to each other through a transmission cable, comprising the steps of:
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multiplexing a video signal and first control signals which are obtained from said television camera, by using a first time-division multiplexing circuit, to generate a first serial signal;
transmitting said first serial signal by using a predetermined first signal line in said cable;
transmitting a second control signal from said television camera to said video apparatus by using a predetermined second signal line in said cable;
separating said first serial signal obtained from said first signal line into a video signal and said first control signal by a first de-multiplexing circuit of said video apparatus; and
transmitting third control signals from said video apparatus to said television camera by using third and fourth signal lines in said cable. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for signal transmission between a television camera and a video apparatus, comprising:
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a first connection circuit which is connected to said television camera;
a second connection circuit which is connected to said video apparatus; and
a transmission cable for electrically connecting said first connection circuit and said second connection circuit to each other, wherein;
said first connection circuit has a first time-division multiplexing circuit for multiplexing an image signal obtained from said television camera and first control signals and converting them into a first serial signal;
said second connection circuit has a first de-multiplexing circuit for de-multiplexing said multiplexed first serial signal into said image signal and a first control signal; and
said transmission cable has a first signal line for transmitting said first serial signal and a second signal line for transmitting a second control signal from said television camera to said video apparatus. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification