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Method and/or apparatus for encoding and/or decoding digital video together with an N-bit alpha plane

An alpha and digital technology, applied in the field of digital video, which can solve problems such as timing information synchronization and maintenance difficulties

Inactive Publication Date: 2006-04-05
LSI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, the synchronization and maintenance of timing information between the alpha and video signals appears more difficult

Method used

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  • Method and/or apparatus for encoding and/or decoding digital video together with an N-bit alpha plane
  • Method and/or apparatus for encoding and/or decoding digital video together with an N-bit alpha plane
  • Method and/or apparatus for encoding and/or decoding digital video together with an N-bit alpha plane

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Embodiment Construction

[0014] refer to figure 2 , a block diagram of the system 100 is shown according to a preferred embodiment of the present invention. System 100 generally includes encoder 102 , transmission and / or storage media 104 , and decoder 106 . The encoder has an input 110 capable of receiving a signal (eg VIDEO) and an input 112 capable of receiving a signal (eg Alpha ALPHA). The signal VIDEO may be an uncompressed video signal. The signal ALPHA may indicate the degree of opacity, translucency, or transparency of each pixel of the video signal. The encoder 102 may have an output 104 that submits a signal, such as a bitstream BITSTREAM. Signal BITSTREAM is a compressed bitstream. Signal BITSTREAM may include both video information from signal VIDEO and alpha information from signal ALPHA. Signal BITSTREAM is submitted to transmission and / or storage medium 104 .

[0015] If the signal BITSTREAM is to be transmitted (eg, via a cable television network, a satellite transmission syste...

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Abstract

A method for generating a compressed digital video bitstream, comprising the steps of receiving a first subsequence representing a video signal, receiving a second sub-sequence representing an alpha signal, and generating the compressed digital video bitstream in response to the first sub-sequence and the second sub-sequence. The compressed digital video bitstream (i) includes information from said video signal and information from said alpha signal and (ii) conforms to a defined transmission standard.

Description

technical field [0001] The present invention relates generally to digital video, and more particularly to a method and / or apparatus for encoding and / or decoding digital video with an n-bit alpha plane. Background technique [0002] The alpha component (sometimes called matte or key) can be considered the fourth color component of the pixel. The alpha component specifies how opaque, translucent, or transparent the pixel is. The alpha component is often used to control color mixing and is often treated as a separate output signal in video systems. [0003] Alpha channels can be used in many professional production environments. For example, SMPTE (Society of Motion Picture and Television Engineers) defines two-channel HD-SDI (High Definition Serial Data Interface) and SD-SDI (Standard Definition Serial Data Interface) for uncompressed delivery / transmission. SMPTE also defines the S268 standard for uncompressed file storage. [0004] refer to figure 1 , system 10 illustrat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26
CPCH04N7/26345H04N19/00424H04N19/30
Inventor L·L·温格
Owner LSI CORP