Joint device capable of meeting two-way transmission requirement of digital television

Abstract

The invention discloses a joint device capable of meeting the two-way transmission requirement of a digital television, which is a cylinder formed by coiling a sheet metal, wherein the two ends of the cylinder are arranged to be dumbbell-shaped grabhooks which are provided with a thin middle part and two thick ends respectively; the thin part of the dumbbell-shaped grabhook is a clamping groove; a hollow cone of the thick part is a grabhook which is provided with 4 to 12 holes; and the end part of the grabhook is bell-mouthed. The joint device can meet the two-way transmission requirement of the digital television, is convenient, fast and secure to connect, and can make pictures clearer and more stable and prevent noise interference.

Description

[0001] The application for this case is the filing date: July 17, 2009; the application number: 200910114232.9; the name of the invention: a divisional application for a joint device that can meet the requirements of digital TV bidirectional transmission. technical field [0002] The invention relates to a joint device of a television system, in particular to a joint device capable of meeting the requirements of bidirectional transmission of digital television. Background technique [0003] The connecting device used in the existing TV receiving system, whether it is wireless satellite or cable, and whether it is analog TV or digital TV, it includes various wired cable connectors, patch cords, branches, distributors, user boxes , set-top boxes, various amplifiers, optical transmitters, receivers, etc., the F connectors and F connectors used have the following disadvantages: the TV signal line single-strand copper wire is twisted on the F head and the connection method is to...

AI Technical Summary

Problems solved by technology

[0003] The connecting device used in the existing TV receiving system, whether it is wireless satellite or cable, and whether it is analog TV or digital TV, it includes various wired cable connectors, patch cords, branches, distributors, user boxes , set-top boxes, various amplifiers, optical transmitters, receivers, etc., the F connectors and F connectors used have the following disadvantages: the TV signal line single-strand copper wire is twisted on the F head and the connection method is to rely on a thin hole in the product socket. The metal clip is connected by touch, the contact surface is very small, sometimes even the metal clip and the TV signal line are suspended from each other, the TV signal can only be transmitted by induction, and after a period of use, the connecting part is very easy to rust, so It is equivalent to connecting a resistor and a frequency mixing diode between them, which will generate noise and interference (distortion of the public road), reduce the signal-to-noise ratio of the TV picture, make the whole picture unclear, and even frequently appear mosaics, static frames, The error signal is interrupted or the image cannot be received

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