Invention Grant
- Patent Title: Entropy encoding and decoding scheme
- Patent Title (中): 熵编码和解码方案
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Application No.: US13789768Application Date: 2013-03-08
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Publication No.: US09130585B2Publication Date: 2015-09-08
- Inventor: Detlev Marpe , Heiko Schwarz , Thomas Wiegand
- Applicant: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- Applicant Address: DE Munich
- Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- Current Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- Current Assignee Address: DE Munich
- Agency: Keating & Bennett, LLP
- Main IPC: H03M7/34
- IPC: H03M7/34 ; H03M7/40 ; H03M7/42 ; H03M7/30

Abstract:
In PIPE coding, where alphabet symbols are distributed among a plurality of specialized entropy en/decoders according to their probability distribution estimate, a categorizing stage is provided where source symbols to be encoded are sub-divided into a first substream which is subject to VLC coding, and a second substream which is subject to PIPE coding. By this measure, source symbols having an appropriate symbol probability distribution, i.e. a probability distribution suitable for being efficiently coded by means of VLC coding without the deficiencies outlined above in the introductory portion of the specification of the present application, may be categorized as VLC coded symbols whereas other symbols may be treated as PIPE coded symbols and subject to PIPE coding, the coding complexity of which is higher than VLC coding, but at a better compression efficiency.
Public/Granted literature
- US20130187798A1 ENTROPY ENCODING AND DECODING SCHEME Public/Granted day:2013-07-25
Information query
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