Transmission apparatus

Abstract

There is provided a transmission device (A) arranged in an electronic apparatus (1) having a circuit board (3) for input and / or output and a conductive body (9). The transmission device (A) comprises a relay cable (7) having first and second ends (7a, 7b). The first end (7a) of the relay cable (7) is connected to the circuit board (3). A receptacle type connector (11) attached to a reverse surface (9a) of the body (9) is provided at the second end (7b) of the relay cable. In order to prevent generation of radiation noises from the relay cable (7), a metal shell in the receptacle type connector (11) is grounded to the body (9).

Description

technical field [0001] The present invention relates to a transmission device in an electronic device using a relay cable, and particularly to a transmission device used for high-speed data transmission. Background technique [0002] Since real-time data needs to be transmitted at high speed like digitized animation data, in recent years, a serial interface with a real-time transmission function has been used, such as the high-speed serial bus standard IEEE1394 (Institute of Electrical and Electronics Engineers 1394). cables or connectors. [0003] For example, in AV (Audio-Visual) equipment such as TV (Television) television receivers, socket-type connectors are respectively arranged on the front and back of the machine, and corresponding devices connected to video cameras, for example, are connected to these socket-type connectors. plug-type connector. [0004] In this case, if I / O (input-output) boards are provided on the front and rear of the machine, and the boards ar...

AI Technical Summary

Problems solved by technology

[0004] In this case, when I / O (input-output) boards are provided on the front and rear of the machine, and the boards are equipped with socket-type connectors on the front and back, the manufacturing cost will increase.

[0005] Therefore, although it is conceivable to arrange only the substrate at the rear of the machine, and use a relay cable to connect the substrate at the rear to the receptacle connector arranged at the front, there will be such a problem at this time, that is, from the relay Noise radiated from cables can affect components inside the machine

[0006] Therefore, although it is also conceivable to connect the shielded wire of the relay cable to the ground of the board, there is a problem in this case that noise is radiated from the ground of the board and damages the wires in the board. Impedance matching

[0007] In a game machine that performs image formation, the same problem occurs when a relay cable is used to connect the I / O board disposed in the machine to the socket-type connector.

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