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Processing device and method of digital video frequeney data

A technology for video processing and video data, which is applied in electrical digital data processing, image data processing, special data processing applications, etc., and can solve problems such as increasing circuit size and cost.

Inactive Publication Date: 2007-07-04
MEDIATEK INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But, the way of above-mentioned video processing system, from the point of view of circuit design, has following several shortcoming: the one, main picture video signal and sub-picture unit video signal each need a spare buffer memory
Second, the sub-picture unit color coder needs to convert the color codes of the two sub-picture unit color codes. The conversion circuit of the sub-picture unit color must be converted by frequency multiplication, or two sets of the same circuit can be used for parallel operation. processing, in order to cooperate with the processing of the interpolation method; however, no matter which method will increase the circuit size and cost

Method used

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  • Processing device and method of digital video frequeney data
  • Processing device and method of digital video frequeney data
  • Processing device and method of digital video frequeney data

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Embodiment Construction

[0044] Please refer to FIG. 2 , which shows a flowchart of a video processing method according to a preferred embodiment of the present invention. The video processing method can be applied to the decoding of digital video data, such as the decoding of digital audio-visual disc (Digital Versatile Disc, DVD), for converting the aspect ratio of the video frame to generate a video data. This video processing method includes the following steps.

[0045] First, the method starts, and step 210 is executed to decode a sub-picture unit data to output a decoded sub-picture unit data SD k . Next, go to step 220 . In step 220, a main picture data VD k and this decoded sub-picture unit data SD k will be mixed to output a mixed video data MD k . Afterwards, step 230 is performed to store the video data MD of this video mixer k . Finally, the method executes step 240 to receive the mixed video data MD k , and read at least one previous mixed video data, and according to an aspect ...

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Abstract

The device includes decoding and color matching equipment of sub-image unit, video mixer, buffer storage and interpolation processor. The said equipment carries out decoding and color matching process for data of sub-image unit as well as output data decoded. The video mixer mixes data of main frame and data of sub-image unit and output data mixed. The buffer storage stores the mixed video data output from mixer. According to aspect scale, the interpolation processor generates interpolated video data by using calculating method interpolated between received mixed video data and previous mixed video data read out from buffer storage.

Description

technical field [0001] The present invention relates to a video processing device and method for digital video (video) data, and in particular to a video processing device and method applicable to the decoding process of digital audio-visual discs, which can be used as the appearance of video images Scale conversion. Background technique [0002] In order to meet the needs of users for higher-capacity recording media, better video image quality, and more convenient usability, a number of major manufacturers advocated and joined forces. In 1996, a recording media-digital audio-visual Compact Disc (DVD) - A specification to replace traditional compact discs (ie compactdisc, CD). In the DVD specification, the size of a DVD disc is the same as that of a traditional CD disc, but the data capacity of a DVD disc can be at least 7 times higher than that of a CD disc of the same size. Therefore, the optical disc stipulated by the DVD specification can record more video data for bet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/445G06T5/50G11B20/10G06F12/00G06F17/00
Inventor 林子平
Owner MEDIATEK INC
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