Sean C Mccarthy

US Patent:

6360021, Mar 19, 2002

Filed:

Nov 30, 1999

Appl. No.:

09/451394

Inventors:

Sean T. McCarthy - Berkeley CA
William G. Owen - Berkeley CA

Assignee:

The Regents of the University of California - Oakland CA

International Classification:

G06K 940

US Classification:

382254, 382260, 382261, 382275

Abstract:

An apparatus and methods for efficiently processing signal and image data are described. The invention provides a representation of signal and image data that can be used as a figure of merit to compare and characterize different signal processing techniques. The representation can be used as an intermediate result that is may be subjected to further processing, and/or may be used as a control element for processing operations. As a provider of an intermediate result, the invention can be used as a step in processes for the transduction, storage, enhancement, refinement, feature extraction, compression, coding, transmission, or display of image, audio and other data. The invention improves manipulation of data from intrinsically unpredictable, or partially random sources. The result is a concise coding of the data in a form permitting robust and efficient data processing, a reduction in storage demands, and restoration of original data with minimal error and degradation. The invention provides a system of coding source data derived from the external environment, whether noise-free or contaminated by random components, and regardless of whether the data are represented in its natural state, such as photons, or have been pre-processed.

US Patent:

20070280294, Dec 6, 2007

Filed:

May 31, 2007

Appl. No.:

11/756353

Inventors:

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

Assignee:

Modulus Video, Inc. - Sunnyvale CA

International Classification:

H04J 1/00

US Classification:

370485000

Abstract:

A CBR/VBR hybrid implementation encoding video streams for conserving bandwidth usage in a channel comprises, in an exemplary arrangement, CBR encoding for frames whose complexity exceeds a threshold, and uses VBR encoding for frames whose complexity is below the threshold. In some embodiments, the threshold can be dynamically adjusted to permit varying amounts of bandwidth reclamation. The complexity can be determined based on a motion estimation analysis or on other indicia such as the level of detail in a frame.

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:

20100265404, Oct 21, 2010

Filed:

Apr 16, 2010

Appl. No.:

12/761581

Inventors:

Sean T. McCarthy - San Francisco CA, US
Vijay Kamarshi - Cupertino CA, US
Amit Tikare - San Jose CA, US

Assignee:

General Instrument Corporation - Horsham PA

International Classification:

H04N 5/217

US Classification:

348607, 348E05078

Abstract:

A system includes a data storage configured to store a model human visual system, an input module configured to receive an original picture in a video sequence and to receive a reference picture, and a processor. The processor is configured to create a pixel map of the original picture using the model human visual system. A first layer is determined from the pixel map. A weighting map is determined from a motion compensated difference between the original picture and the reference picture. A processed picture is then determined from the original picture using the weighting map and the first layer.

US Patent:

20120042091, Feb 16, 2012

Filed:

Aug 10, 2011

Appl. No.:

13/206892

Inventors:

Sean T. McCarthy - San Francisco CA, US
Thomas L. Du Breuil - Ivyland PA, US
Gary Hughes - Chelmsford MA, US
Mark R. Magee - Campbell CA, US
Wendell Sun - San Diego CA, US

Assignee:

GENERAL INSTRUMENT CORPORATION - Horsham PA

International Classification:

G06F 15/16

US Classification:

709231

Abstract:

A method and apparatus for an adaptive bit rate system () that includes a media segmenter (). The media segmenter divides a streaming media content into a plurality of variable duration segments wherein a first of the plurality of variable duration segments has a duration different from a second of the plurality of variable duration segments so that one of the plurality of variable duration segments ends at a determined discontinuity in the streaming media content. The system also can include an encoder () for encoding the variable duration segments of the streaming media content. In addition, the system includes an adaptive bit rate server () for storing and transmitting the variable duration segments of the streaming media content.

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:

20130148731, Jun 13, 2013

Filed:

Dec 9, 2011

Appl. No.:

13/315409

Inventors:

Sean T. McCarthy - San Francisco CA, US
Vijay Kamarshi - Cupertino CA, US

Assignee:

GENERAL INSTRUMENT CORPORATION - Horsham PA

International Classification:

H04N 7/26

US Classification:

37524016, 375E07125

Abstract:

Encoding a video signal including pictures includes generating perceptual representations based on the pictures. Reference pictures are selected and motion vectors are generated based on the perceptual representations and the reference pictures. The motion vectors and pointers for the reference pictures are provided in an encoded video signal. Decoding may include receiving pointers for reference pictures and motion vectors based on perceptual representations of the reference pictures. The decoding of the pictures in the encoded video signal may include selecting reference pictures using the pointers and determining predicted pictures, based on the motion vectors and the selected reference pictures. The decoding may include generating reconstructed pictures from the predicted pictures and the residual pictures.

US Patent:

20130195206, Aug 1, 2013

Filed:

Jan 31, 2012

Appl. No.:

13/362529

Inventors:

Sean T. McCarthy - San Francisco CA, US

Assignee:

GENERAL INSTRUMENT CORPORATION - Horsham PA

International Classification:

H04N 7/26

US Classification:

37524027, 375E07026

Abstract:

Video, including a sequence of original pictures, is encoded using eye tracking maps. The original pictures are compressed. Perceptual representations, including the eye tracking maps, are generated from the original pictures and from the compressed original pictures. The perceptual representations generated from the original pictures and from the compressed original pictures are compared to determine video quality metrics. The video quality metrics may be used to optimize the encoding of the video and to generate metadata which may be used for transcoding or monitoring.