Television signal transmission method, set top box and television

Abstract

The embodiment of the invention discloses a television signal transmission cost, a set top box and a television, which can reduce cost for television program watching on a plurality of televisions. The method provided by the embodiment of the invention comprises the following steps of: receiving a radio frequency (RF) input signal; selecting a corresponding frequency point in the RF input signal according to program information selected by a user; demodulating the frequency point to obtain a scrambled transmission stream; descrambling the scrambled transmission stream to obtain a transmissionstream; modulating the transmission stream to obtain an RF output signal; and sending the RF output signal to the plurality of televisions through a television distributor, so that the users can watch corresponding television programs on the televisions. The embodiment of the invention also provides a television signal transmission system and related equipment. The embodiment of the invention canreduce the cost for the television program watching on the plurality of televisions.

Description

technical field [0001] The invention relates to the communication field, in particular to a television signal transmission method, a set-top box and a television. Background technique [0002] In order to facilitate the operation of TV program services and authority management, digital TV operators need to scramble TV programs. Since TVs generally do not have descrambling functions, and the scrambling techniques used by operators are different, a A device that can receive digital TV programs and has the function of descrambling programs, such as a digital set-top box. [0003] Now, there may be multiple TV sets in a family at the same time to meet the needs of watching TV programs independently in multiple rooms. [0004] However, at present, all the audio and video interfaces of a set-top box output the same programs. Using a set-top box cannot meet the needs of multiple TVs in a family to watch TV programs independently. It is currently more common for a TV to be equipped...

AI Technical Summary

Problems solved by technology

[0004] However, at present, all the audio and video interfaces of a set-top box output the same programs. Using a set-top box cannot meet the needs of multiple TVs in a family to watch TV programs independently. It is currently more common for a TV to be equipped with a set-top box. solution

[0005] In the solution of the prior art, if the user wants to watch TV programs independently on multiple TV sets, then each TV set needs to be equipped with a set-top box, but this will greatly increase the cost paid by the user and the operator.

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