EP1545133A3

Low complexity transcoding between video streams using different entropy coding

Abstract

A method for transcoding between video streams using different entropy coding, comprising the steps of (A) decoding a first video stream using a first set of entropy codes, and (B) generating a second video stream by entropy encoding the decoded first video stream using a second set of entropy codes. The first set of entropy codes and the second set of entropy codes are configured to represent all valid coefficient values of the first video stream. In particular, the sets of entropy codes comprise context adaptive variable length codes (VLC) and context adaptive binary arithmetic coding codes.

Term

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Projected expiry passed 26 July 2024, 2.2 years ago.

Every citation, both ways

Citations
Document	Relation	Office	Category	Cited during	Relevant claims
EP1365591A2	Cites	European Patent Office (EPO)	Y	Search report	1-11
WINGER L ET AL: "Extended CAVLC coefficient level codes for PExt", JOINT VIDEO TEAM (JVT) OF ISO/IEC MPEG & ITU-T VCEG(ISO/IEC JTC1/SC29/WG11 AND ITU-T SG16 Q6), no. JVT-I011, 5 September 2003 (2003-09-05), XP030005748	Non-patent	–	–	Search report	–
BAKHMUTSKY M: "Pair-Match Huffman Transcoding to Achieve a Highly Parallel Variable Length Decoder with Two-Word Bit Stream Segmentation", PROCEEDINGS OF THE INTERNATIONAL SCOCIETY FOR OPTICAL ENGINEERING, vol. 3021, 12 February 1997 (1997-02-12), SPIE, Bellingham, WA, US, pages 247 - 265, XP000648217, ISSN: 0277-786X	Non-patent	–	–	Search report	–
KEROFSKY L: "Analysis of maximum level allowed in H.264", JOINT VIDEO TEAM (JVT) OF ISO/IEC MPEG & ITU-T VCEG(ISO/IEC JTC1/SC29/WG11 AND ITU-T SG16 Q6), no. JVT-J021r2, 12 December 2003 (2003-12-12), XP030005798	Non-patent	–	–	Search report	–
WIEGAND T ET AL: "Draft Errata List with Revision-Marked Corrections for H.264/AVC", JOINT VIDEO TEAM (JVT) OF ISO/IEC MPEG & ITU-T VCEG(ISO/IEC JTC1/SC29/WG11 AND ITU-T SG16 Q6), no. JVT-I050, 5 September 2003 (2003-09-05), XP030005780	Non-patent	–	–	Search report	–

6 members in 2 offices; this record represents the family

This recordMember, by publication datePriority claim

Priority claims4

Priority claims
Document	Office	Kind	Date
739829	United States of America	–	2003-12-18
73982903	United States of America	A	2003-12-18
898125	United States of America	–	2004-07-23
89812504	United States of America	A	2004-07-23

Members6

Family members, oldest first
Document	Office	Kind
EP1545133A2	European Patent Office (EPO)	A2	2005-06-22
US2005147172A1	United States of America	A1	2005-07-07
US2005147173A1	United States of America	A1	2005-07-07
EP1545133A3This record	European Patent Office (EPO)	A3	2009-09-09
US7646814B2	United States of America	B2	2010-01-12
US7660355B2	United States of America	B2	2010-02-09

9 legal events, as the office reported them to INPADOC

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	Event	Code
2010-09-01	Application deemed to be withdrawnWithdrawn18D	18D
2010-07-30	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWNSTAA	STAA
2010-05-12	Designation fees paidAKX	AKX
2009-09-09	Designated contracting statesAK	AK
2009-09-09	Request for extension of the european patentAX	AX
2009-08-07	Search report despatchedORIGINAL CODE: 0009013PUAL	PUAL
2005-06-22	Designated contracting statesAK	AK
2005-06-22	Request for extension of the european patentAX	AX
2005-05-06	Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI	PUAI