Floyd A Simpson

US Patent:

6370500, Apr 9, 2002

Filed:

Sep 30, 1999

Appl. No.:

09/409187

Inventors:

Jian-Cheng Huang - Lake Worth FL
Sunil Satyamurti - Lake Worth FL
Floyd Simpson - Lantana FL
Kenneth Finlon - Wellington FL

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

G10L 1900

US Classification:

704208, 704214, 704207, 704215

Abstract:

A technique is used in a speech encoder ( ) that reduces non-speech activity of a low bit rate digital voice message. Speech model parameters that include quantized speech spectral parameter vectors are generated in a sequence of frames. A determination is made as to which frames of the sequence of frames are voiced frames and which frames are unvoiced frames. A consecutive sequence of frames of unvoiced frames is identified ( ) as an unvoiced burst when a length, N , of the consecutive sequence of frames exceeds a predetermined length, N. A non-speech activity portion of the unvoiced burst is identified ( ) and removed.

US Patent:

6418405, Jul 9, 2002

Filed:

Sep 30, 1999

Appl. No.:

09/410140

Inventors:

Sunil Satyamurti - Lake Worth FL
Jian-Cheng Huang - Lake Worth FL
Floyd Simpson - Lantana FL
Kenneth Finlon - Wellington FL

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

G10L 1900

US Classification:

704206, 704222, 704230

Abstract:

A system controller ( ) includes a speech encoder ( ) that dynamically segments frames of a low bit rate digital voice message. Speech model parameters have been generated in a sequence of frames. The speech model parameters include quantized speech spectral parameter vectors. The speech encoder selects ( ) a first quantized speech spectral parameter vector as a current anchor vector, selects ( ) a second quantized speech spectral parameter vector located a predetermined number of frames (L ) from the current anchor vector as a target speech parameter vector, and perturbs ( ) the target speech parameter vector to derive a plurality (K) of perturbed speech parameter vectors.

US Patent:

6418407, Jul 9, 2002

Filed:

Sep 30, 1999

Appl. No.:

09/410007

Inventors:

Jian-Cheng Huang - Lake Worth FL
Floyd Simpson - Lantana FL
Sunil Satyamurti - Lake Worth FL
Kenneth Finlon - Wellington FL

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

G10L 1104

US Classification:

704207, 704217, 704219

Abstract:

A pitch determiner ( ) of a system controller ( ) that generates a smoothed pitch value for a current frame of a low bit rate voice message includes a pitch function generator ( ) that generates a pitch detection function (PDF) for each frame of digital samples of a voice signal, a pitch candidate selector ( ) that selects a future frame pitch candidate from a pitch detection function (PDF), and a pitch adjuster ( ) that generates the smoothed pitch value. The pitch adjuster includes a subharmonic pitch corrector ( ) that determines a future frame pitch value by performing pitch subharmonic correction of a future frame pitch candidate using a roughness factor of the frequency transformed window.

US Patent:

6496798, Dec 17, 2002

Filed:

Sep 30, 1999

Appl. No.:

09/409183

Inventors:

Jian-Cheng Huang - Lake Worth FL
Floyd Simpson - Lantana FL
Sunil Satyamurti - Lake Worth FL
Oleg Andric - West Palm Beach FL
Kenneth Finlon - Wellington FL

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

G10L 1900

US Classification:

704230, 704201

Abstract:

A system controller ( ) includes a speech encoder ( ) that encodes a low bit rate digital voice message. The speech encoder sets values of words of a header of the encoded message. The values of the words define a quantity of frames in the voice message, N, and define a vocoder rate used for the encoded message. The speech encoder sets a state of each indicator in each frame status field of N frame status fields that are transmitted after the header of the encoded message. The speech encoder assembles N frame data fields, wherein each of the frame data fields comprises a set of data words. The N frame data fields follow the N frame status fields. Each set of data words conforms to at least one of the vocoder rate and the states of the indicators. A decoder ( ) decodes the encoded low bit rate digital message.

US Patent:

6691081, Feb 10, 2004

Filed:

Apr 28, 2000

Appl. No.:

09/560110

Inventors:

Jian-Cheng Huang - Lake Worth FL
Kenneth D. Finlon - Wellington FL
Floyd D. Simpson - Lantana FL

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

G10L 1106

US Classification:

704207, 704208, 704223, 704214, 704268

Abstract:

A digital signal processor for processing data including voice messaging data that may have both voiced and unvoiced speech components utilizes computer routines stored in a memory used by the digital signal processor. The computer routines programmed provide for control of at least a portion of a selective call receiver; receiving and decoding data received at the selective call receiver; comparing the addresses received at the selective call receiver with addresses stored in a memory location coupled to the digital signal processor; controlling voicing including both voiced and unvoiced speech components; and generating a pitch wave using an inverse discrete Fourier Transform and resample the pitch wave to provide a time domain voiced speech component.

US Patent:

6772126, Aug 3, 2004

Filed:

Sep 30, 1999

Appl. No.:

09/410006

Inventors:

Floyd Simpson - Lantana FL
Jian-Cheng Huang - Lake Worth FL
Sunil Satyamurti - Lake Worth FL
Kenneth Finlon - Wellington FL
Robert Schwendeman - Pompano Beach FL

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

G10L 2104

US Classification:

704500, 704222

Abstract:

A system controller ( ) is for transferring a low bit rate digital voice message. The system controller generates from an analog voice signal representing the voice message a set of speech model parameters, and generates a first derived set of speech model parameters from a first subset of the set of speech model parameters, the first derived set encoding the voice signal at a second voice quality and second vocoder rate that are less, respectively, than a first voice quality and vocoder rate. The system controller transmits ( ) the low bit rate-digital voice message comprising the first derived set of speech model parameters to a communication receiver ( ). The communication receiver requests ( ) an incremental message when the quality of the voice message is unsatisfactory. The system controller generates and transmits ( ) an incremental message-and the communication receiver uses ( ) the incremental message to generate a higher quality voice message.

US Patent:

6973052, Dec 6, 2005

Filed:

Dec 19, 2003

Appl. No.:

10/741659

Inventors:

Huai Y. Wang - Greenacres FL, US
Ye Chen - Schaumburg IL, US
Stephen P. Emeott - Rolling Meadows IL, US
Floyd D. Simpson - Lake Worth FL, US
Timothy J. Wilson - Rolling Meadows IL, US

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04B007/005

US Classification:

370278, 370338, 370449, 710 46

Abstract:

A mobile station establishes a schedule by which data is exchanged with an access point. The schedule allows the mobile station to use a low power mode at times outside of the scheduled service periods. However, the mobile station may occasionally need to retrieve additional data from the access point, or transmit additional data to the access point, and so initiates an unscheduled service period to do so.

US Patent:

6990362, Jan 24, 2006

Filed:

Dec 16, 2003

Appl. No.:

10/737356

Inventors:

Floyd D. Simpson - Lake Worth FL, US
Jaime A. Borras - Hialeah FL, US
Eryk Dutkiewicz - Figtree, AU
Raad Raad - Cringila, AU
Christopher G. Ware - Abbotsford, AU

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04Q 7/32

US Classification:

455574, 455572, 4555501, 4555521, 4555531, 4553431, 4553435, 4553434, 340 732, 340 734

Abstract:

A communication unit () can have at least a first receiver () and a second receiver (). The latter typically consumes more power than the former during ordinary operation. Pursuant to one embodiment a communication unit can use the lower-power receiver to detect energy on a monitored channel while the second receiver is retained in a reduced power mode of operation. Upon detecting an absence of channel activity the second receiver can be restored to normal operability to effect such activities as are then presently required.