Timothy P Burke

US Patent:

7653130, Jan 26, 2010

Filed:

Dec 27, 2006

Appl. No.:

11/616347

Inventors:

Gerald R. Joyce - Newton MA, US
Timothy M. Burke - Norton MA, US
David R. Flanagan - Framingham MA, US

Assignee:

General Instrument Corporation - Horsham PA

International Classification:

H04N 7/12
H04N 11/02
H04N 11/04
H04B 1/66

US Classification:

37524007

Abstract:

Method and apparatus for encoding video is described. In one example, average of motion vectors for each of a plurality of blocks is maintained over a threshold number of inter-coded frames in the video. The running average of motion vectors for each of the plurality of blocks is compared to a threshold value. Each of the plurality of blocks the running average of which does not satisfy the threshold value is encoded using a first quantization parameter. Each of the plurality of blocks the running average of which satisfies the threshold value is encoded using a second quantization parameter. The second quantization parameter results in a coarser quantization of transformed coefficients than the first quantization parameter.

US Patent:

20030028894, Feb 6, 2003

Filed:

Jul 18, 2002

Appl. No.:

10/198345

Inventors:

Gerald Joyce - Newton MA, US
Timothy Burke - Norton MA, US
Walter Greene - Mansfield MA, US
David Grubb - Doylestown PA, US
George Harvey - Bedford MA, US

Assignee:

General Instrument, Inc.

International Classification:

H04N007/173
H04L012/28
H04L012/56

US Classification:

725/118000, 725/119000, 725/127000, 370/408000

Abstract:

An access node that is deployable at a distance from a cable company head-end or a telephone company central office serves residential and business subscribers within a small geographical area. The access node provides interoperability between and across communications links and protocols, thereby providing a modular, configurable access point for both business and residential users that enables the service provider to tailor its services for each user in a cost-effective manner. The access node includes modular interfaces to multiple communications links and protocols on its network side and modular interfaces to multiple communications links and protocols on its user or access side. A switch/router connects the outputs of the two interfaces together and aggregates traffic to the network while simultaneously partitioning traffic to the users to the appropriate connections.

US Patent:

6233235, May 15, 2001

Filed:

Nov 1, 1999

Appl. No.:

9/430898

Inventors:

Timothy M. Burke - Norton MA
Richard J. Corrigan - Palatine IL

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04L 1228

US Classification:

370356

Abstract:

A system (10) and method for packet telephony power management of a cable distribution network (20), i. e. , a hybrid fiber coax (HFC) communication system, for internet protocol (IP) packet telephony information between multiple cable modem subscriber units (16,18) communicated over a public switch telephone network (PSTN) (32) with at least one router (28), e. g. , a cable modem termination system (CMTS) on a communication network backbone. Power management is provided to minimize power consumption on the IP telephony distribution system (10) supporting line-powered cable-modem subscriber units (16). The power saving techniques are supported using a virtual broadcast channel (VBC) (62) provided in the packet telephony system using an alert queue (60). The alert queue (60) is established and segmented into a plurality of phases for selective activation, each phase having memory buffers for buffering packet telephony information communicated via the CMTSs (28). The multiple cable modem subscriber units (16,18) are divided into a plurality of alert phase groups, each alert phase group being associated with one of the plurality of phases of the alert queue.