Trang Minh Le

US Patent:

6473369, Oct 29, 2002

Filed:

Dec 23, 1999

Appl. No.:

09/471432

Inventors:

Thomas Quan - Mountain View CA
Trang Le - Sunnyvale CA

Assignee:

Oak Technology, Inc. - Sunnyvale CA

International Classification:

G11B 700

US Classification:

369 3014, 369 4428, 369 5332

Abstract:

A fast-acting method of regenerating track crossing signals for track searches across unrecorded areas on read/write optical discs is provided. This is accomplished by comparing the in-phase and quadrature-phase track crossing signals generated by the optical pickup head when a track search is being performed. A blank signal is generated when no quadrature-phase signal transition occurs between two successive in-phase signal transitions. Fake quadrature-phase signals are continuously generated. Upon occurrence of a blank indicating signal, the fake quadrature-phase signals are immediately supplied to the track crossing counter mechanism in place of the missing quadrature-phase signals. As a result, there is no loss of track count.

US Patent:

20180024762, Jan 25, 2018

Filed:

Jul 22, 2016

Appl. No.:

15/216740

Inventors:

- Armonk NY, US
Trang T. Le - San Jose CA, US
Carol S. Mellgren - Vail AZ, US
John R. Paveza - Morgan Hill CA, US
Dale F. Riedy - Poughkeepsie NY, US
Harry M. Yudenfriend - Poughkeepsie NY, US

International Classification:

G06F 3/06

Abstract:

A computer-implemented method includes identifying a computer storage environment comprising a primary storage device and one or more secondary storage devices and determining a secondary data retrieval scenario associated with one of the one or more secondary storage devices. The computer-implemented method further includes determining a read-only retrieval arrangement based on the secondary data retrieval scenario. A corresponding computer program product and computer system are also disclosed.

Address:

875 Lakemuir Dr, Sunnyvale, CA 94089

VIN:

JM1BL1W87C1643351

Make:

MAZDA

Model:

MAZDA3

Year:

2012