Receiving set of digital TV

Abstract

The invention comprises a radio frequency network allocation device having more than two output port where a digital receiving circuit is connected to; each digital TV receiving circuit is connected to a radio frequency tuner; a power supply provides power for all digital TV receiving circuits and the radio frequency tuner; the power, all digital TV receiving circuits and the radio frequency tunercommonly compose a out-door machine capable of providing more than two channels of TV output signals.

Description

Technical field [0001] The invention relates to a TV receiving device, in particular to a digital TV receiving device. Background technique [0002] At present, in the promotion of digital TV, a separate digital TV set-top box is generally adopted for one-way reception, and the audio and video signals are demodulated by the set-top box and provided to the user's TV set for display. This method has the following problems: First, the manufacturing cost of a separate set-top box is relatively high. Even if it is given to users for free, operators will still pass it on to the viewing fee, thereby hindering the promotion of digital TV; secondly, digital TV systems The conditional access included, that is, the CA system part is relatively complex, and the cost is relatively high, and the conditional access (CA) system has poor security and is vulnerable to hacker attacks and decryption. Once the key is unlocked, high investment The Conditional Access (CA) system of the company wi...

AI Technical Summary

Problems solved by technology

This method has the following problems: First, the manufacturing cost of a separate set-top box is relatively high. Even if it is given to users for free, operators will still pass it on to the viewing fee, thereby hindering the promotion of digital TV; secondly, digital TV systems The conditional access included, that is, the CA system part is relatively complex, and the cost is relatively high, and the conditional access (CA) system has poor security and is vulnerable to hacker attacks and decryption. Once the key is unlocked, high investment of conditional access (CA) systems are at risk of becoming obsolete

And the set-top box will occupy the AV audio and video signal input port of a TV. There are many TVs with only one AV audio and video signal input port, and most families have a DVD player, which also uses the AV audio and video signal input port. Cause some conflicts in use. In addition, after the user turns on the power every time, for many TVs, he has to switch the signal input source of the TV, which will also cause inconvenience to the user; some TVs do not have AV audio and video signals. The input port must also be connected with an external converter, such as a radio frequency modulator, in order to watch the program

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