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Method and system for detecting and performing automatic bank switching for a filter coefficient RAM

A technology of filter coefficients and filter coefficients, which is applied in the scanning details of TV systems, parts of TV systems, parts of color TVs, etc., and can solve problems such as audio interference and loss of picture synchronization

Inactive Publication Date: 2005-09-07
THOMSON LICENSING SA
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  • Claims
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Problems solved by technology

[0005] Changing the filtering structure during broadcast may cause unwanted disturbances in the picture, for example, video flickering, pairing of interlaced signals, loss of picture synchronization or audio interference

Method used

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  • Method and system for detecting and performing automatic bank switching for a filter coefficient RAM
  • Method and system for detecting and performing automatic bank switching for a filter coefficient RAM
  • Method and system for detecting and performing automatic bank switching for a filter coefficient RAM

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Embodiment Construction

[0012] The features and advantages of the present invention will become more apparent from the following description given by way of example. One embodiment of the invention may be included in an integrated circuit. Another embodiment of the invention may include discrete components forming a circuit.

[0013] figure 1 is a block diagram of a typical digital video receiving system (10) according to the present invention. The system (10) includes an antenna (20) and an input processor (22) for together receiving and digitizing a broadcast carrier modulated with signals carrying audio, video, and related data. The system (10) also includes a demodulator (24) for receiving and demodulating the digital output from the input processor (22). Additionally, the system (10) includes a remote control unit (26) for receiving user input commands. The system (10) also includes one or more digital input to digital output or digital input to analog output display drivers (28) and respect...

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Abstract

A method for facilitating a dual-bank filter coefficient RAM designed to switch banks automatically during the vertical blanking interval in a television application. The method and system of the present invention allows a micro controller to program a new set of filter coefficients in the memory bank not currently being used, automatically detect when all the coefficients have been written and then automatically switch banks during the vertical blanking interval in the television application.

Description

[0001] priority statement [0002] This application claims the benefit of U.S. Provisional Patent Application No. 60 / 392,293, entitled "METHOD AND SYSTEM FORDETECTING AND PERFORMAING AUTOMATIC BANK SWITCHING FOR A FILTERCOEFFICIENT RAM," filed June 27, 2002, the contents of which are hereby incorporated by reference. technical field [0003] The present invention relates to data transfer and storage in video processing systems. Background technique [0004] With the advent of digital and high-definition television broadcast modems, television signal processing systems are required to receive and display television broadcasts in multiple formats. Each format has a unique signal quality and is optimally handled by a unique filtering structure. During the broadcast process, there is a need for the program broadcaster to be able to switch between formats. Therefore, there is a need for a television signal processing system capable of recognizing changes in the broadcast format...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/06H04N5/14H04N5/21H04N5/44H04N5/46H04N9/64
CPCH04N5/46H04N5/21H04N9/642H04N5/4401H04N21/4435H04N5/14H04N21/435H04N21/426
Inventor 迈克尔·德韦恩·诺克斯
Owner THOMSON LICENSING SA
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