Sean Donald Mccarthy

US Patent:

20080075163, Mar 27, 2008

Filed:

Sep 21, 2007

Appl. No.:

11/859445

Inventors:

Neil Brydon - Mountain View CA, US
Danny Hunt - Nevada City CA, US
Sean McCarthy - San Francisco CA, US

Assignee:

GENERAL INSTRUMENT CORPORATION - Horsham PA

International Classification:

H04N 7/24

US Classification:

375240020, 375E07011

Abstract:

A constrained variable rate coding technique limits the number of bits used in an encoding process. A quality setting indicates a maximum level of quality to be used in the encoding process which limits the number of bits used in the encoding process. A bandwidth reclamation factor which indicates an amount of bandwidth to conserve may also be used with the quality setting. The constrained variable rate coding technique using a lower quality encoding process for less complex video data and a higher quality encoding technique for higher quality video data.

US Patent:

20120155554, Jun 21, 2012

Filed:

Dec 20, 2010

Appl. No.:

12/973458

Inventors:

Mark R. Magee - Campbell CA, US
Sukesh V. Kaithakapuzha - Fremont CA, US
Sean T. McCarthy - San Francisco CA, US
Wayne D. Michelsen - Menlo Park CA, US

Assignee:

GENERAL INSTRUMENT CORPORATION - Horsham PA

International Classification:

H04N 7/26

US Classification:

37524026, 375E07026

Abstract:

A method for processing a plurality of multilayer bit streams includes receiving a plurality of multilayer bit streams each having a base layer and at least one enhancement layer. One or more of the enhancement layers are extracted in whole or in part from at least one of the multilayer bit streams so that the plurality of multilayer bit streams are collectively reduced in their total bandwidth. Each of the multilayer bit streams are rewritten to a single layer bit stream. The single layer bit streams are multiplexed to form a multiplexed single layer bit stream.

US Patent:

20220385935, Dec 1, 2022

Filed:

Aug 5, 2020

Appl. No.:

17/629093

Inventors:

- San Francisco CA, US
Fangjun PU - Sunnyvale CA, US
Peng YIN - Ithaca NY, US
Sean Thomas MCCARTHY - San Francisco CA, US
Tao CHEN - Palo Alto CA, US

Assignee:

DOLBY LABORATORIES LICENSING CORPORATION - San Francisco CA

International Classification:

H04N 19/513
H04N 19/33
H04N 19/105
H04N 19/172

Abstract:

Methods and systems for canvas size scalability across the same or different bitstream layers of a video coded bitstream are described. Offset parameters for a conformance window, a reference region of interest (ROI) in a reference layer, and a current ROI in a current layer are received. The width and height of a current ROI and a reference ROI are computed based on the offset parameters and they are used to generate a width and height scaling factor to be used by a reference picture resampling unit to generate an output picture based on the current ROI and the reference ROI.

US Patent:

20220286667, Sep 8, 2022

Filed:

Mar 11, 2020

Appl. No.:

17/422710

Inventors:

- San Francisco CA, US
Fangjun PU - Sunnyvale CA, US
Peng YIN - Ithaca NY, US
Sean Thomas McCarthy - San Francisco CA, US
Tao CHEN - Palo Alto CA, US

Assignee:

Dolby Laboratories Licensing Corporation - San Francisco CA

International Classification:

H04N 19/105
H04N 19/132
H04N 19/174
H04N 19/46
H04N 19/70

Abstract:

Methods, systems, and bitstream syntax are described for canvas size, single layer or multi-layer, sealable decoding, with support for regions of interest (ROI). using a decoder supporting reference picture resampling. Offset parameters for a region of interest in a current picture and offset parameters for an ROI in a reference picture are taken into consideration when computing scaling factors to apply reference picture resampling Syntax elements for supporting ROI regions under reference picture resampling arc also presented.

US Patent:

20220224946, Jul 14, 2022

Filed:

Mar 29, 2022

Appl. No.:

17/707581

Inventors:

- San Francisco CA, US
Fangjun Pu - Sunnyvale CA, US
Taoran Lu - Santa Clara CA, US
Tao Chen - Palo Alto CA, US
Walter J. Husak - Simi Valley CA, US
Sean Thomas McCarthy - San Francisco CA, US

Assignee:

DOLBY LABORATORIES LICENSING CORPORATION - San Francisco CA

International Classification:

H04N 19/85
H04N 19/119
H04N 19/136
H04N 19/147
H04N 19/159
H04N 19/176
H04N 19/46

Abstract:

Given a sequence of images in a first codeword representation, methods, processes, and systems are presented for image reshaping using rate distortion optimization, wherein reshaping allows the images to be coded in a second codeword representation which allows more efficient compression than using the first codeword representation. Syntax methods for signaling reshaping parameters are also presented.

US Patent:

20210211738, Jul 8, 2021

Filed:

Feb 13, 2019

Appl. No.:

16/968574

Inventors:

- San Francisco CA, US
Fangjun Pu - Sunnyvale CA, US
Taoran Lu - Santa Clara CA, US
Tao Chen - Palo Alto CA, US
Walter J. Husak - Simi Valley CA, US
Sean Thomas McCarthy - San Francisco CA, US

Assignee:

DOLBY LABORATORIES LICENSING CORPORATION - San Francisco CA

International Classification:

H04N 19/85
H04N 19/147
H04N 19/159
H04N 19/176
H04N 19/46
H04N 19/119
H04N 19/136

Abstract:

Given a sequence of images in a first codeword representation, methods, processes, and systems are presented for image reshaping using rate distortion optimization, wherein reshaping allows the images to be coded in a second codeword representation which allows more efficient compression than using the first codeword representation. Syntax methods for signaling reshaping parameters are also presented.

US Patent:

20210084307, Mar 18, 2021

Filed:

Sep 1, 2020

Appl. No.:

17/008671

Inventors:

- San Francisco CA, US
Taoran Lu - Santa Clara CA, US
Fangjun Pu - Sunnyvale CA, US
Sean Thomas McCarthy - San Francisco CA, US

Assignee:

Dolby Laboratories Licensing Corporation - San Francisco CA

International Classification:

H04N 19/159
H04N 19/46
H04N 19/82
H04N 19/176
H04N 19/107
H04N 19/51
H04N 19/36

Abstract:

To support lossless mode at the block level when in-loop reshaping (LMCS) is enabled, the following changes are proposed to the existing LMCS pipeline. In intra mode, encode lossless blocks in the original domain, thus bypassing inverse mapping after reconstruction in the decoder. In inter mode, encode lossless blocks in the original domain, thus bypassing both forward mapping after motion compensation and inverse mapping after reconstruction in the decoder. In both modes, disable any LMCS-related color scaling.

US Patent:

20150326858, Nov 12, 2015

Filed:

Jul 20, 2015

Appl. No.:

14/804292

Inventors:

- Suwanee GA, US
Sukesh V. Kaithakapuzha - Fremont CA, US
Sean T. McCarthy - San Francisco CA, US
Wayne D. Michelsen - Santa Clara CA, US

International Classification:

H04N 19/124
H04N 19/66
H04N 19/187
H04N 19/14
H04N 19/18

Abstract:

A method for processing a plurality of multilayer bit streams includes receiving a plurality of multilayer bit streams each having a base layer and at least one enhancement layer. One or more of the enhancement layers are extracted in whole or in part from at least one of the multilayer bit streams so that the plurality of multilayer bit streams are collectively reduced in their total bandwidth. Each of the multilayer bit streams are rewritten to a single layer bit stream. The single layer bit streams are multiplexed to form a multiplexed single layer bit stream.