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Digital video code device

A digital video and encoder technology, applied in the field of video system synchronization signal insertion devices, can solve the problems of increasing the volume of digital video encoders, and achieve the effect of reducing the size

Inactive Publication Date: 2007-02-07
LG ELECTRONIC (HUIZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The same configuration brings about an increase in the size of the digital video encoder

Method used

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  • Digital video code device
  • Digital video code device
  • Digital video code device

Examples

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Embodiment Construction

[0035] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] figure 2 is a block diagram of a digital video encoder according to an embodiment of the present invention.

[0037] In the implementation examples mentioned above, the digital video encoder includes: a grayscale OVER sampler 101, a chrominance OVER sampler 102, a FIR filter 103, a video counter 202, a sync / blank counter 203, the first demultiplexer 204 , the control device 107 , the color grouper 108 , the demodulation device 109 , the digital / analog conversion device 110 and the shift register 201 .

[0038] In the above embodiments, the volume is reduced by using the FIR filter 103 .

[0039] The points of difference other than the same parts as the conventional encoder system are explained below.

[0040] refer to figure 2 , it is easy to obtain the count of the filter having the cosine shape of the pulse response rising of the FIR filte...

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PUM

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Abstract

The invention relates to a digit video coder, which comprises a gray over sampler for sampling the gray signal with over sample method; a color sampler for sampling the color signal with over sample method; a controller for adjusting the time of coder; a shift register for receiving the blank signal of controller; a video accouter; a synchronous / blank accouter; a multi-path output selector for receiving the input signal of shift register, receiving and outputting synchronous / blank signal, or the signal of video accouter; a FIR filter for outputting gray and storing synchronous signal; a color group device for receiving the color signal of over sample and inserting into color section; a demodulator for demodulating the inserted color signal, and a digit / analogue converter for converting the gray signal and demodulated color signal into analogue signal.

Description

technical field [0001] The present invention relates to a digital video coding device, more specifically, it relates to a video system synchronous signal insertion device for receiving digital video data output from an MPEG decoder and outputting an analog CVBS signal. Background technique [0002] A digital video encoder is a device that outputs digital signal-processed video data to an analog TV in the NTSC / PAL / SECAM format through an MPEG decoder or the like. [0003] figure 1 It is a block diagram of a digital video encoder of an embodiment in conventional technology. [0004] In the above-mentioned embodiment, the digital video encoder includes the following devices: grayscale OVER sampler 101, chrominance OVER sampler 102, FIR filter 103, video counter 104, blank area rise / fall expander 105, sync signal rise / fall Drop expander 106 , control means 107 , color packetizer 108 , demodulation means 109 and digital / analog conversion means 110 . [0005] The above-describe...

Claims

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Application Information

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IPC IPC(8): H04N11/04
Inventor 陈英珉
Owner LG ELECTRONIC (HUIZHOU) CO LTD
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