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Scalable video coding with two layer encoding and single layer decoding

An encoding and internal encoding technology, applied in the field of encoding and decoding scalable video data, which can solve the problems of increasing computational complexity, limited computational power, and reducing

Inactive Publication Date: 2008-04-23
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Increased computational complexity and increased memory requirements may degrade the performance of power-constrained and computationally limited devices such as PDAs (Personal Digital Assistants), mobile phones, etc.

Method used

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  • Scalable video coding with two layer encoding and single layer decoding
  • Scalable video coding with two layer encoding and single layer decoding
  • Scalable video coding with two layer encoding and single layer decoding

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Embodiment Construction

[0036] Methods and apparatus are described to provide multi-layer video including a base layer and one or more enhancement layers with reduced decoder overhead. The encoding algorithm produces base layer and enhancement layer coefficients, which can be combined at the decoder before inverse quantization when both layers are available for decoding. Aspects of some embodiments provide acceptable base layer video when an enhancement layer is not available or a decoder may choose not to decode an enhancement layer for reasons such as power saving. In the following description, specific details are given to provide a thorough understanding of the embodiments. However, it will be understood by those skilled in the art that the embodiments may be practiced without these specific details. For example, electrical components may be shown in block diagrams in order not to obscure the embodiments in unnecessary detail. In other instances, such components, other structures and techniques...

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Abstract

Some embodiments comprise a method of decoding a video bitstream that include receiving a first layer of data and a second layer of data, combining the received first layer data and the received second layer data, and decoding the combined data. Also, a method of video encoding that includes selecting data for encoding in a first layer and a second layer so as to allow decoding of the data in a single combined layer, and encoding the selected data in the first layer and in the second layer by encoding a coefficient in the first layer and encoding a differential refinement to the first layer coefficient in the second layer.

Description

[0001] Claiming priority under 35 U.S.C. § 119 [0002] This patent application asserts Provisional Application No. 60 / 660 / 877, filed March 10, 2005, entitled "TWO PARALLEL ENCODINGAND SINGLE LAYER DECODING," and filed September 1, 2005, entitled "SCALABLE VIDEO CODING WITH TWO LAYER ENCODING ANDSINGLE LAYER DECODING," Provisional Application No. 60 / 713,208, both of which are expressly incorporated herein by reference. technical field [0003] The present invention relates to methods and devices for encoding and decoding scalable video data. Background technique [0004] Streaming data over the Internet and mobile / wireless channels has attracted great attention due to the rapid development and great success of the Internet and wireless communications, as well as the increased demand for multimedia services. In heterogeneous Internet Protocol (IP) networks, video is provided by a server and can be streamed by one or more clients. Wired connections include dial-up, ISDN, ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/50
CPCH04N19/00781H04N7/50H04N7/26335H04N19/00448H04L29/0651H04N7/26356H04N7/26351H04N19/00521H04N19/00484H04N19/00533H04N19/00454H04N19/00096H04L65/607H04N7/26707H04N7/26085H04N7/26755H04N19/61H04N19/37H04N19/126H04N19/44H04N19/423H04N19/436H04N19/36H04L65/70H04N19/30H04N21/63
Inventor 陈培松维贾雅拉克希米·R·拉韦恩德拉恩
Owner QUALCOMM INC
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