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A kind of set-top box and the method for digital TV channel changing thereof

A digital TV and set-top box technology, applied in electrical components, image communication, selective content distribution, etc., can solve problems such as low efficiency and affecting user viewing experience, achieve fast channel change, save channel change time, and shorten the cost of channel change the effect of time

Active Publication Date: 2016-05-18
SHENZHEN SKYWORTH DIGITAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although now digital TV set-top boxes generally use user-defined categories of favorite programs, front-end broadcast program categories and other methods to help users select, search, and switch channels, but every time they change channels, they must first close the PMT and ECM receiving channels of the previous channel, and then switch channels. Open the PMT and ECM receiving channels of the target channel, and the channel change can only be completed after the ECM is received and handed over to the CA module for processing
In this way, when the user quickly changes channels forward or backward according to the order of the program list, the efficiency is very low, which affects the user's viewing experience

Method used

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  • A kind of set-top box and the method for digital TV channel changing thereof
  • A kind of set-top box and the method for digital TV channel changing thereof
  • A kind of set-top box and the method for digital TV channel changing thereof

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] figure 1 It is a schematic flow chart of an embodiment of a method for digital television station changing in the present invention, and the specific implementation steps are as follows:

[0026]Step 101, receiving an instruction to switch channels;

[0027] After the set-top box receives the channel-changing instruction from the user, it first closes the audio and video channels of the current channel, but keeps the PMT and ECM channels of the current channel open. Among them, each digital channel uses about 4 channels, including 1 PMT, 1 video, 1 audio, and 1 ECM.

[0028] Step 102, judging whether the target channel of channel switching is in the pre-channel switching group according to the channel switching instruction;

[0029] In the prior art, every time a channel is changed, the PMT and ECM receiving channels of the current channel m...

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Abstract

The invention discloses a method for changing channels of a digital television, which comprises the following steps: receiving a channel-changing instruction; judging whether a channel-changing target channel is within a preparatory channel-changing group according to the channel-changing instruction; if yes, realizing channel changing by using the PMT (Program Map Table) and ECM (Entitlement Control Message) data of the target channel cached in advance; if not, receiving a PMT of the target channel, opening an audio and video frequency and ECM channel after analysis, receiving the ECM and realizing channel changing; and constructing a preparatory channel-changing group again after channel changing. The invention also discloses a set top box. In such a manner, the method has the beneficial effects that the channel-changing time of the digital television can be shortened, and the user experience can be improved.

Description

technical field [0001] The invention relates to the technical field of digital television, in particular to a set-top box and a method for changing channels of digital television. Background technique [0002] At present, the overall translation of domestic digital TV has been basically completed, and TV viewers have begun to widely use digital TV signals to watch programs. Compared with the traditional analog TV signal in the past, the digital TV signal has the characteristics of good viewing effect, strong anti-interference ability, and can transmit a variety of digital data value-added services. Moreover, digital TV uses digital compression coding and multiplexing technology to transmit 4 to 10 sets of digital channels at a frequency point where only one analog channel was transmitted before, greatly enriching the number of TV channels. The number of digital channels that have been broadcast has reached more than 200 sets, but it also brings a problem. For a long time, T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/435H04N21/4623
Inventor 贾哲明
Owner SHENZHEN SKYWORTH DIGITAL TECH CO LTD
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