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Improved enhancement layer coding for scalable video coding

A technology of video decoding and enhancement layer, which is applied in the field of digital video decoding and can solve problems such as inability to receive video

Inactive Publication Date: 2010-10-06
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As such, devices located farther from the source may not be able to receive encoded video transmitted at constant quality, bit rate, or spatial resolution

Method used

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  • Improved enhancement layer coding for scalable video coding
  • Improved enhancement layer coding for scalable video coding
  • Improved enhancement layer coding for scalable video coding

Examples

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Embodiment Construction

[0036] figure 1 is a block diagram illustrating a video transmission system 10 supporting video scalability. exist figure 1 In the example shown, video transmission system 10 includes a source device 12 and a plurality of destination devices 14A, 14B (collectively "destination devices 14"). Source device 12 obtains digital video content from one or more sources and encodes the video content for transmission to destination device 14 . Video content may, for example, be captured in real-time or near real-time, archived (eg, pre-captured), computer-generated, or a combination thereof. In each case, video content may be encoded by source device 12 for transmission to destination device 14 over a communication channel. Source device 12 may include or be coupled to a transmitter including appropriate radio frequency (RF) modulation, filtering, and amplifier components to drive one or more antennas to deliver encoded video over a communication channel.

[0037] To support scala...

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Abstract

This disclosure describes scalable video coding techniques. In particular, the techniques may be used to encode refinements of a video block for enhancement layer bit streams in a single coding pass, thereby reducing coding complexity, coding delay and memory requirements. In some instances, the techniques encode each nonzero coefficient of a coefficient vector of the enhancement layer without knowledge of any subsequent coefficients. Coding the enhancement layer in a single pass may eliminate the need to perform a first pass to analyze the coefficient vector and a second pass for coding the coefficient vector based on the analysis.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Provisional Application No. 60 / 979,919, filed October 15, 2007, and U.S. Provisional Application No. 60 / 940,214, filed October 16, 2007. The contents of each of these applications are incorporated herein by reference. technical field [0003] This disclosure relates to digital video coding, and more particularly to scalable video coding of video data. Background technique [0004] Digital video capabilities can be incorporated into a wide range of devices including digital televisions, digital direct broadcast systems, wireless communication devices, wireless broadcast systems, personal digital assistants (PDAs), laptop or desktop computers, digital cameras, digital Recording devices, video game devices, video game consoles, cellular or satellite radiotelephones, etc. Digital video devices implement video compression techniques such as Motion Picture Experts Group (MPEG)-2...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N7/30
CPCH04N19/00442H04N19/00951H04N19/00775H04N19/00448H04N19/00424H04N19/00006H04N19/30H04N19/10H04N19/34H04N19/36H04N19/60H04N19/91
Inventor 马尔塔·卡切维奇拉胡尔·潘查尔叶琰
Owner QUALCOMM INC
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