Reginald C Hill

US Patent:

6721701, Apr 13, 2004

Filed:

Sep 20, 1999

Appl. No.:

09/399604

Inventors:

Stephen Clifford Goss - Wheaton IL
Jeffrey Ross Light - Lincolnwood IL
Reginald JuVann Hill - Chicago IL

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

G10L 1500

US Classification:

704231, 704500

Abstract:

A sound discriminator ( ) in accordance with the invention distinguishes or emphasis a specific audio signal or class or audio signals. The sound discriminator is employed in a digital audio encoding and/or decoding process. A comparator ( ) within the sound discriminator compares a received representation of an audio signal with a stored representation ( ) of a desired signal. An error between the two signals is determined and if the error is within an acceptable range, the stored representation of the desired signal replaces the actual received representation of the audio signal in an encoded or decoded stream of data. In this manner, a desired signal within an encoded or decoded signal is discriminated.

US Patent:

61579890, Dec 5, 2000

Filed:

Jun 3, 1998

Appl. No.:

9/089721

Inventors:

Eric S. Collins - Barrington IL
Brett L. Lindsley - Wheaton IL
Reginald J. Hill - Chicago IL

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

G06F 1200

US Classification:

711151

Abstract:

An arbitration and task switching technique in a real-time multiprocessor data processing system (20) having a common bus (32) and a segmented shared memory (30), where fullness of memory segments of the shared memory (30) is used as a measurement for arbitration and task switching priorities. A bus request mechanism in each of the processors dynamically calculates normalized priority values based on relative needs across the system (20). The normalized priority calculation is based on monitoring the fullness of memory segments of the shared memory (30) associated with each processor (24, 26, 28) of the system (20). Using this normalized priority calculation, the bus access order and bus bandwidth are optimally allocated according to tasks executed by the processors (24, 26, 28). Also, the normalized priority calculation and a preprogrammed threshold is used to control task switching in the multi-processor system (20).