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Method and receiver for managing the consistency of service lists in digital television system

A technology for digital TV systems and TV receivers, which can be applied to parts of TV systems, parts of color TVs, TVs, etc., and can solve problems such as time-consuming

Inactive Publication Date: 2004-02-25
INTERDIGITAL CE PATENT HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In the first case from the user, and in the second case from the CPU, the main drawback of both is time consuming
[0015] The problem with the latter case is that it can happen at any time and monopolize the processing power of the CPU

Method used

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  • Method and receiver for managing the consistency of service lists in digital television system
  • Method and receiver for managing the consistency of service lists in digital television system
  • Method and receiver for managing the consistency of service lists in digital television system

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Embodiment Construction

[0023] figure 1 The decoder in includes tuner 2 linked to source 1. In this embodiment, the signal source is a satellite dish and a corresponding frequency converter. The demodulator 3 demodulates the signal provided by the tuner. The correction path 4 corrects the demodulated data and sends it to the demultiplexer 5 . The demultiplexer 5 includes a certain number of filters programmed by the microprocessor 23 in view of the requirements of the decoder's operating system and the various applications supported by the decoder for supplying the requested data packets. For the understanding of the figure, only some connections of the microprocessor 23 are shown. The application program of the decoder includes an audio decoder 16, a video decoder 17, a teletext decoder / generator 18, a conditional access subsystem (including a decryption circuit 7, a checksum for communication with a smart card 10 via a smart card interface 9) circuit 8), and service information module 19.

[0...

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PUM

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Abstract

The present invention consists of a method for managing the consistency of service lists broadcasted by a digital television network, the service lists containig parameters corresponding to each broadcasted services and being received in a television receiver and stored in a memory, characterized in that, it comprises the step of: triggering means for updating the said stored list, consistency checking between at least one stored list of services and a received list of service, updating the stored list in the memory of receiver with at least one parameter of the second list. The invention can be used in the field of digital television.

Description

technical field [0001] The invention relates to the field of digital television, in particular to the processing of Service Information (SI) data. Although this principle can be easily extended to other similar standards, such as European DVB (Digital Video Broadcasting) (ETSI (European Telecommunications Association) reference EN300468) or ATSC (ATSC reference A / 56), the following specific implementation is mainly based on DSS system (Direct Satellite System). Background technique [0002] Newer generations of digital television systems include the possibility to broadcast applications in the bitstream. These applications can then be downloaded by the receiver (set top box) and executed in their CPU to provide the user with specific features related to the television services he or she has access to. These applications are built on top of application programming interfaces (APIs) that provide basic features available on the set-top box from which advanced features present...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/43H04N5/445H04N7/16H04N7/24
CPCH04N21/8402H04N21/482H04N21/4532H04N21/8173H04N21/4586H04N21/435H04N21/454H04N21/235H04N21/43
Inventor 埃里克·德尼奥吕克·让蒂洛朗·沙特利耶
Owner INTERDIGITAL CE PATENT HLDG