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Method for quick writing channel information into cable digital TV set-top box

A channel information and TV technology, applied to color TV parts, TV system parts, TVs, etc., can solve problems such as long search time, complicated search settings, increased maintenance and service operating costs, etc., to achieve strong The effect of the ability to expand

Inactive Publication Date: 2007-12-05
CHANGDE GUANGDA BROADCAST&TV BANDWIDTH NETWORK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Combining the above factors, the current cable digital TV set-top box has problems such as complicated search settings, long search time, and search errors when searching for channels.
It brings great inconvenience to users and increases the operating cost of maintenance and service

Method used

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  • Method for quick writing channel information into cable digital TV set-top box

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Embodiment Construction

[0026] Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail as follows:

[0027] In Figure 1, the channel decoder at the front end of the digital TV set-top box is a tuner and QPSK, QAM, OFDM, VSB demodulation device, the tuner is connected to an external signal input optical fiber, and in the source decoder at the back end, the MIPS demultiplexing device and The MPEG-2 decompression device is connected, the MPEG-2 decompression outputs the audio signal, the MIPS demultiplexing control device is connected with the 2D graphics processing device, the 2D graphics processing device outputs the video signal, and the source decoder is respectively connected to the flash memory operating system, DRAM, Modem, conditional access device and IR receiver are connected.

[0028] In Fig. 2, the steps of the channel following table directly and quickly writing the channel information are as follows: first receive the frequenc...

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Abstract

Basis on complying the DVB-C standard of the cable digital TV set-top box (CDTS), this method collects all channel related info, re-arranges and generates the channel following table (CFT), then sends CFT to CDTS via a DC digital rotary-playing mode. Once starting, CDTS receives CFT, verifies its version, completes the channel searching and renewing within one second. CFT includes all channel data related the current net and is sent in the initial or the default channel. CDTS receives this data during starting to obtain all needed channel info. Using CFT can avoid problems, such as channel searching incompletely, error, etc. due to the wrong former data or signal. It not only simplifies the user operation of channel searching, but also adds functions as: the channel taxis, the channel volume compensation and the channel audio track setting, etc.

Description

technical field [0001] The invention relates to a technique for directly and quickly writing channel information into a cable digital TV set-top box in the application of the cable digital TV without the user needing to perform channel search operations. Background technique [0002] With the development of the digital TV industry, various users have different levels of knowledge. Most users are new to digital TV products, and there are inevitably various problems and operational errors in use; on the other hand, various digital TV transmission There are various differences in the implementation of the platform and the cooperation with the set-top box; in addition, the program content is constantly being adjusted and changed, and users need to frequently search for channels. Combining the above factors, the current cable digital TV set-top box has problems such as complex search settings, long search time, and search errors when searching for channels. It brings great incon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/00H04N21/458
Inventor 龚舒志冯志靖丁文李直
Owner CHANGDE GUANGDA BROADCAST&TV BANDWIDTH NETWORK
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