Source: https://patents.google.com/patent/US8737466B2/en
Timestamp: 2019-02-18 11:11:24
Document Index: 388746444

Matched Legal Cases: ['Application No. 12161242', 'Application No. 12161254', 'Application No. 12160431', 'Application No. 12160433', 'Application No. 12160436', 'Application No. 12161254', 'Application No. 2012', 'Application No. 2012']

US8737466B2 - Method and system for improving compressed image chroma information - Google Patents
US8737466B2
US8737466B2 US13/197,281 US201113197281A US8737466B2 US 8737466 B2 US8737466 B2 US 8737466B2 US 201113197281 A US201113197281 A US 201113197281A US 8737466 B2 US8737466 B2 US 8737466B2
US13/197,281
US20110286519A1 (en
2010-10-27 Priority to US12/913,045 priority patent/US9497471B2/en
2011-08-03 Application filed by Dolby Laboratories Licensing Corp filed Critical Dolby Laboratories Licensing Corp
2011-08-03 Priority to US13/197,281 priority patent/US8737466B2/en
2011-08-17 Assigned to DOLBY LABORATORIES LICENSING CORPORATION reassignment DOLBY LABORATORIES LICENSING CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DOLBY LABORATORIES, INC.
2011-08-17 Assigned to DEMOGRAFX reassignment DEMOGRAFX ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DEMOS, GARY A.
2011-08-17 Assigned to DOLBY LABORATORIES, INC. reassignment DOLBY LABORATORIES, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DEMOGRAFX, INC.
2011-11-24 Publication of US20110286519A1 publication Critical patent/US20110286519A1/en
2014-05-27 Publication of US8737466B2 publication Critical patent/US8737466B2/en
1. A computer-implemented method for a decoder, the method comprising:
receiving, at the decoder, at least a luminance QP (quantization parameter) value for a macroblock and a first chroma QP bias value for the macroblock, wherein the decoder comprises a luminance channel, a first chroma channel and a second chroma channel;
utilizing, with the decoder, the luminance QP value and the first chroma QP bias value to determine a first chroma QP value for the macroblock by adding the first chroma QP bias value to the luminance QP value;
decompressing the macroblock using the luminance QP value and the first chroma QP value,
accessing an upsizing resolution factor for at least one channel of the macroblock; and
converting the at least one channel to a full resolution using the upsizing resolution factor;
wherein the first chroma QP value is less than a predetermined maximum value and greater than a predetermined minimum value, and
wherein the first chroma QP value is determined for the first chroma channel.
3. The computer-implemented method of claim 2, further comprising configuring the first chroma QP bias value to be higher than zero or less than zero, and configuring the second chroma QP bias value to be greater than zero or less than zero.
utilizing, with the decoder, a range of differential chroma-biased QP values, wherein the range of the differential chroma-biased QP values comprises the QP bias value; and
extending the range of the differential chroma-biased QP values with an extended QP range function or a lookup table comprising the differential chroma-biased QP values.
US13/197,281 2001-07-12 2011-08-03 Method and system for improving compressed image chroma information Active 2022-02-18 US8737466B2 (en)
US13/325,695 US20120087408A1 (en) 2001-07-12 2011-12-14 Method and system for improving compressed image chroma information
US13/325,695 Continuation US20120087408A1 (en) 2001-07-12 2011-12-14 Method and system for improving compressed image chroma information
US20110286519A1 US20110286519A1 (en) 2011-11-24
US8737466B2 true US8737466B2 (en) 2014-05-27
US13/325,695 Pending US20120087408A1 (en) 2001-07-12 2011-12-14 Method and system for improving compressed image chroma information
2011-12-14 US US13/325,695 patent/US20120087408A1/en active Pending
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Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DEMOGRAFX, INC.;REEL/FRAME:026762/0766
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DOLBY LABORATORIES, INC.;REEL/FRAME:026770/0320
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DEMOS, GARY A.;REEL/FRAME:026762/0692