Stephen K Pope

US Patent:

6771570, Aug 3, 2004

Filed:

Dec 30, 1999

Appl. No.:

09/476395

Inventors:

Terrence L. Wong - San Francisco CA
Gregory S. Lewis - Berkeley CA
David C. Lee - Hong Kong, CN
Yi Ling - Foster City CA
Stephen P. Pope - Berkeley CA
Steven R. Spielman - Berkeley CA
Jonathan A. Zingman - Oakland CA

Assignee:

LSI Logic Corporation - Milpitas CA

International Classification:

G11B 1722

US Classification:

369 301, 3692753

Abstract:

A system and method for reading and writing in a multilevel optical data system is disclosed. The system provides control signals for timing acquisition, level calibration, DC control, AGC, equalizer training and data synchronization. The user data is ECC protected and optionally convolutionally encoded before being combined with the control signals in an information block. The multilevel information block can be written to an optical disc as a series of multilevel marks. The optical disc may also contain an Address in Pregroove signal (AIP) to facilitate synchronization during writing of an information block. The AIP signal has an integer number of address frames per information block.

US Patent:

7149178, Dec 12, 2006

Filed:

Jun 25, 2004

Appl. No.:

10/877374

Inventors:

Terrence L. Wong - San Francisco CA, US
Gregory S. Lewis - Berkeley CA, US
David C. Lee - Hong Kong, CN
Yi Ling - Foster City CA, US
Stephen P. Pope - Berkeley CA, US
Steven R. Spielman - Berkeley CA, US
Jonathan A. Zingman - Oakland CA, US

Assignee:

LSI Logic Corporation - Milpitas CA

International Classification:

G11B 7/24

US Classification:

3692753

Abstract:

A system and method for reading and writing in a multilevel optical data system is disclosed. The system provides control signals for timing acquisition, level calibration, DC control, AGC, equalizer training and data synchronization. The user data is ECC protected and optionally convolutionally encoded before being combined with the control signals in an information block. The multilevel information block can be written to an optical disc as a series of multilevel marks. The optical disc may also contain an Address in Pregroove signal (AIP) to facilitate synchronization during writing of an information block. The AIP signal has an integer number of address frames per information block.

US Patent:

7277506, Oct 2, 2007

Filed:

Aug 9, 2000

Appl. No.:

09/636000

Inventors:

Stephen P. Pope - Berkeley CA, US
Aki Shohara - Sunnyvale CA, US
Yuo Chen - Fremont CA, US
Bryan Chase - Sunnyvale CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04L 27/06
H03D 1/00

US Classification:

375341

Abstract:

An improved method and apparatus for Viterbi Algorithm calculations for maximum likelihood sequence estimators in communication receivers is disclosed. The calculations for the maximum likelihood sequence estimator, in accordance with the invention, utilizes a variant of the Viterbi algorithm developed by Ungerboeck in which the associated branch metric calculations for the trellis require the computation of a set of branch metric parameters. An embodiment of the present invention provides for an improved recursive method and apparatus for calculation of the branch metric parameters that reduces the number of processor clock cycles required per state metric calculation. This enables real time computation of the branch metric parameters during execution of the Viterbi Algorithm.

US Patent:

20110075851, Mar 31, 2011

Filed:

Sep 28, 2010

Appl. No.:

12/892843

Inventors:

Jay LeBoeuf - San Francisco CA, US
Stephen Pope - San Francisco CA, US

International Classification:

H04R 29/00

US Classification:

381 56

Abstract:

Controlling a multimedia software application using high-level metadata features and symbolic object labels derived from an audio source, wherein a first-pass of low-level signal analysis is performed, followed by a stage of statistical and perceptual processing, followed by a symbolic machine-learning or data-mining processing component is disclosed. This multi-stage analysis system delivers high-level metadata features, sound object identifiers, stream labels or other symbolic metadata to the application scripts or programs, which use the data to configure processing chains, or map it to other media. Embodiments of the invention can be incorporated into multimedia content players, musical instruments, recording studio equipment, installed and live sound equipment, broadcast equipment, metadata-generation applications, software-as-a-service applications, search engines, and mobile devices.