JPS621484U

JPS621484U -

Info

Publication number: JPS621484U
Application number: JP1985091373U
Authority: JP
Priority date: 1985-06-17
Filing date: 1985-06-17
Publication date: 1987-01-07

Description

[Brief explanation of the drawing]

図面は本考案の実施例に係り、第１図はビデオ
カメラとカメラコントロールユニツトとをカメラ
ケーブルで接続する状態を示す図、第２図は本考
案の実施例のブロツク図、第３図は実施例の一要
部の詳細ブロツク図、第４図は実施例の他の要部
の詳細ブロツク図、第５図ないし第７図は実施例
の動作説明のための各部の信号波形図である。各図中、符号１はビデオカメラ、２はカメラコ
ントロールユニツト、３はカメラケーブル、４は
カメラケーブル長検出回路、５は補償ビデオ信号
出力回路、６はカメラケーブル接続確認回路、７
はロツク回路。 The drawings relate to an embodiment of the present invention; Fig. 1 is a diagram showing a state in which a video camera and a camera control unit are connected with a camera cable, Fig. 2 is a block diagram of an embodiment of the invention, and Fig. 3 is a diagram showing the implementation of the invention. FIG. 4 is a detailed block diagram of another essential part of the embodiment, and FIGS. 5 to 7 are signal waveform diagrams of various parts for explaining the operation of the embodiment. In each figure, 1 is a video camera, 2 is a camera control unit, 3 is a camera cable, 4 is a camera cable length detection circuit, 5 is a compensation video signal output circuit, 6 is a camera cable connection confirmation circuit, 7
is a lock circuit.

Claims

[Claims for Utility Model Registration] The length of the cable connected between at least two electrical devices is calculated from the amplitude attenuation value of an electrical signal transmitted from one electrical device to the other in a cable connecting at least two electrical devices. a cable length detection circuit that compensates for the amplitude attenuation value of the electrical signal (uncompensated electrical signal) transmitted within the cable, and outputs the compensated electrical signal (post-compensated electrical signal); an output circuit that outputs a setting operation completion signal indicating that the operation of setting the amplitude attenuation compensation value of the previous electric signal has been completed, and outputs the compensated electric signal when a lock signal is input; and both of the electric devices. A cable connection confirmation circuit that outputs a cable connection confirmation signal when confirming that one electrical device is connected via a cable, and another that outputs an electrical signal after a predetermined time has elapsed (at the lock point) after one electrical device starts operating. is input (first lock condition), an electrical signal is input a predetermined time before the lock point (second lock condition), and a setting operation completion signal is given (third lock condition). ), and that the cable connection confirmation signal is provided (fourth lock condition). A characteristic feature of this circuit is the amplitude attenuation compensation circuit for electrical signals transmitted through cables.