Brian R Mccarthy

US Patent:

56300166, May 13, 1997

Filed:

Mar 7, 1996

Appl. No.:

8/614777

Inventors:

Kumar Swaminathan - Gaithersburg MD
Brian M. McCarthy - Lafayette Hill PA

Assignee:

Hughes Electronics - Los Angeles CA

International Classification:

G10L 900

US Classification:

395 237

Abstract:

A digital discontinuous cellular communication system has a transmitter that transmits two frames of data following detection of voice inactivity. A receiver includes a comfort noise generator that uses the two frames of data to output noise to the speaker during period of voice inactivity. The comfort noise generator includes synthesis codebook with samples scaled by actual background noise and excitation codebook with samples filtered and scaled by the background noise that are combined to produce comfort noise having attributes and loudness level of the received background noise prior to interruption of transmission. The scaled signals are weighted to vary the loudness level and spectral attributes.

US Patent:

55375090, Jul 16, 1996

Filed:

May 28, 1992

Appl. No.:

7/890747

Inventors:

Kumar Swaminathan - Gaithersburg MD
Brian M. McCarthy - Lafayette Hill PA

Assignee:

Hughes Electronics - Los Angeles CA

International Classification:

G10L 900

US Classification:

395 237

Abstract:

A digital discontinuous cellular communication system has a transmitter that transmits two frames of data following detection of voice inactivity. A receiver includes a comfort noise generator that uses the two frames of data to output noise to the speaker during period of voice inactivity. The comfort noise generator includes synthesis codebook with samples scaled by actual background noise and excitation codebook with samples filtered and scaled by the background noise that are combined to produce comfort noise having attributes and loudness level of the received background noise prior to interruption of transmission. The scaled signals are weighted to vary the loudness level and spectral attributes.

US Patent:

20180297131, Oct 18, 2018

Filed:

Jun 22, 2018

Appl. No.:

16/015587

Inventors:

- Upper Saddle River NJ, US
Brian E. McCarthy - Coon Rapids MN, US

International Classification:

B23D 37/00

Abstract:

A broaching tool is held during the conduct of repetitive duplicate rotary broaching operations on serially presented workpieces. The broaching tool is engaged serially with each workpiece for rotation with the engaged workpiece during a corresponding rotary broaching operation. Each workpiece has a given configuration and the broaching tool has a prescribed configuration placed at an initial orientation for establishing a broached configuration placed at a same predetermined orientation relative to the given configuration of each workpiece. Upon completion of a rotary broaching operation on a workpiece, the broaching tool is returned to the initial orientation of the prescribed configuration in preparation for a duplicate rotary broaching operation on a subsequent serially presented workpiece.