Gregory S Lewis

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:

6816447, Nov 9, 2004

Filed:

May 31, 2001

Appl. No.:

09/872486

Inventors:

David C. Lee - Alameda CA
Steven R. Spielman - Alameda CA
Jonathan A. Zingman - Alameda CA
Gregory S. Lewis - Alameda CA

Assignee:

LSI Logic Corporation - Milpitas CA

International Classification:

G11B 700

US Classification:

369 5919, 369 4728, 369 5925, 369 5924, 369 4735

Abstract:

Creation and detection of synchronization marks for a multilevel data storage medium is disclosed. A sequence of symbols is generated and the sequence of symbols is written to the multilevel data storage medium. A corresponding sequence may be generated by a detector and correlated with read data to detect the synchronization mark.

US Patent:

7145858, Dec 5, 2006

Filed:

Aug 30, 2004

Appl. No.:

10/930930

Inventors:

David C. Lee - Alameda CA, US
Steven R. Spielman - Alameda CA, US
Jonathan A. Zingman - Alameda CA, US
Gregory S. Lewis - Alameda CA, US

Assignee:

LSI Logic Corporation - Milpitas CA

International Classification:

G11B 5/09
G11B 7/00

US Classification:

369 5919, 369 5925, 369 5334

Abstract:

Creation and detection of synchronization marks for a multilevel data storage medium is disclosed. A sequence of symbols is generated and the sequence of symbols is written to the multilevel data storage medium. A corresponding sequence may be generated by a detector and correlated with read data to detect the synchronization mark.

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:

7736421, Jun 15, 2010

Filed:

Oct 5, 2007

Appl. No.:

11/868163

Inventors:

Susanne Hering - Berkeley CA, US
Gregory Lewis - Berkeley CA, US

Assignee:

Aerosol Dynamics Inc. - Berkeley CA

International Classification:

B01D 47/06

US Classification:

95225

Abstract:

An apparatus and method for producing a region of vapor super-saturation and particle growth in a laminar flow by surrounding the particle flow with a saturated or super-saturated sheath flow from which vapor diffuses into the aerosol flow. This method is applicable when the mass diffusivity of the condensing vapor is greater than the thermal diffusivity of the carrier gas, such as is the case when water vapor diffuses into air.

US Patent:

8459572, Jun 11, 2013

Filed:

Oct 22, 2010

Appl. No.:

12/910705

Inventors:

Susanne Hering - Berkeley CA, US
Gregory Lewis - Berkeley CA, US
Steven R. Spielman - Oakland CA, US

Assignee:

Aerosol Dynamics Inc. - Berkeley CA

International Classification:

A62C 5/02

US Classification:

239 8, 239 1, 239405, 239423, 239424, 239589, 95228, 96413, 7386321, 7386322

Abstract:

Technology is presented for the high efficiency concentration of fine and ultrafine airborne particles into a small fraction of the sampled airflow by condensational enlargement, aerodynamic focusing and flow separation. A nozzle concentrator structure including an acceleration nozzle with a flow extraction structure may be coupled to a containment vessel. The containment vessel may include a water condensation growth tube to facilitate the concentration of ultrafine particles. The containment vessel may further include a separate carrier flow introduced at the center of the sampled flow, upstream of the acceleration nozzle of the nozzle concentrator to facilitate the separation of particle and vapor constituents.

US Patent:

20120048112, Mar 1, 2012

Filed:

Aug 25, 2011

Appl. No.:

13/218393

Inventors:

Susanne V. Hering - Berkeley CA, US
Gregory S. Lewis - Berkeley CA, US
Steven R. Spielman - Oakland CA, US

International Classification:

B01D 47/05
B01F 3/04

US Classification:

95228, 261128, 95288, 96243, 96288

Abstract:

This technology relates to the enlargement by water condensation in a laminar flow of airborne particles with diameters of the order of a few nanometers to hundreds of nanometers to form droplets with diameters of the order of several micrometers. The technology presents several advanced designs, including the use of double-stage condensers. It has application to measuring the number concentration of particles suspended in air or other gas, to collecting these particles, or to focusing these particles.

US Patent:

20120255861, Oct 11, 2012

Filed:

Sep 27, 2011

Appl. No.:

13/246608

Inventors:

Susanne Vera Hering - Berkeley CA, US
Gregory Stephen Lewis - Berkeley CA, US
Steven Russel Spielman - Oakland CA, US
Charles Sherman Henry - Fort Collins CO, US
Scott Douglas Noblitt - Fort Collins CO, US

International Classification:

G01N 27/447

US Classification:

204453, 204604, 204601

Abstract:

This technology is a method and apparatus for the semi-continuous measurement of the concentration of constituents of airborne particles which couples a laminar flow, water condensation particle collector to a microfluidic device for assay of particle chemical composition by electrophoresis. The technology has been used for the assay of sulfates, nitrates, chlorides, and organic acids contained in fine and submicrometer atmospheric particles. For these compounds the apparatus and method described is capable of one-minute time resolution at concentrations at the level of micrograms of analyte species per cubic meter of air. Extension to other analytes is possible.