Trinh Cong Bui

US Patent:

56402864, Jun 17, 1997

Filed:

May 8, 1995

Appl. No.:

8/436521

Inventors:

Marc Acosta - San Clemente CA
Carl Bonke - Rancho Santa Margarita CA
Patrick Lee - San Jose CA
Trinh Bui - San Jose CA
Stanley Chang - Irvine CA
Joanne Wu - Diamond Bar CA

Assignee:

Western Digital Corporation - Irvine CA

International Classification:

G11B 509

US Classification:

360 48

Abstract:

An intelligent disk drive includes a controller which embeds user data address information into error correction code check symbols written to the data storage disk. The address information is not written to disk, but address errors are detected by decoding the error correction code check symbols during read operations. Disk space is saved while maintaining robust address error detection.

US Patent:

59639776, Oct 5, 1999

Filed:

Oct 9, 1997

Appl. No.:

8/947213

Inventors:

Clifford M. Gold - Fremont CA
Hang D. Nguyen - Fremont CA
George Li - Santa Clara CA
Minnie Uppuluri - San Jose CA
Hoa Luong - Fremont CA
Steve Paul - Santa Cruz CA
Bryan Mee - San Jose CA
Trinh Bui - San Jose CA

Assignee:

Quantum Corporation - Milpitas CA

International Classification:

G06F 1200

US Classification:

711156

Abstract:

A method of coordinating access to a data buffer including a plurality of data blocks, using a buffer list with a plurality of entries corresponding to the data blocks. Each buffer list entry includes: (i) a status code for indicating the status of data in the corresponding data block, and (ii) a partial address common to both the next buffer list entry and a data block corresponding to said next buffer list entry. A status code is selected from a cyclical set of sequential status codes having a period of N, the status codes sequentially, and alternately, representing the most recent history of a data block, including: (i) full status, indicating data in the data block has been retrieved from the storage device or is to be stored to the storage device, or (ii) empty status, indicating data transferred out of the data block to a host or to the storage device. A store flag maintains a status code representing empty status, and a retrieve flag maintains a status code representing full status. When storing data into the data buffer, locating a desired buffer list entry list with an empty status code by traversing the buffer list, calculating the address of each entry using the partial address in the previous entry, until the desired entry is found.

US Patent:

56897278, Nov 18, 1997

Filed:

May 8, 1995

Appl. No.:

8/436520

Inventors:

Carl Bonke - Rancho Santa Margarita CA
Trinh Bui - Mountain View CA
Stanley Chang - Irvine CA
Joanne Wu - Diamond Bar CA
Phong Tran - Irvine CA

Assignee:

Western Digital Corporation - Irvine CA

International Classification:

G06F 930
G06F 1100

US Classification:

395840

Abstract:

An intelligent disk drive having error detection and correction capability employs an embedded error correction controller with a pipelined architecture for performing error correction under program control. The pipelined architecture provides parallel operand fetching and instruction execution for high speed operations during error correction.

US Patent:

58125647, Sep 22, 1998

Filed:

May 8, 1995

Appl. No.:

8/436515

Inventors:

Carl Bonke - Rancho Santa Margarita CA
Trinh Bui - Mountain View CA
Stanley Chang - Irvine CA
Joanne Wu - Diamond Bar CA
Phong Tran - Irvine CA

Assignee:

Western Digital Corporation - Irvine CA

International Classification:

G11C 2900
G11B 509

US Classification:

371 401

Abstract:

A disk drive having error detection and correction capability includes a dedicated finite field processor for performing corrections and for generating software syndromes for miscorrection detection. The processor operates over a finite field under program control and performs parallel finite field multiplication and addition operations in a single execution cycle.

US Patent:

56919948, Nov 25, 1997

Filed:

May 8, 1995

Appl. No.:

8/436516

Inventors:

Marc Acosta - San Clemente CA
Carl Bonke - Rancho Santa Margarita CA
Trinh Bui - Mountain View CA
Stanley Chang - Irvine CA
Patrick Lee - San Jose CA
Phong Tran - Irvine CA
Joanne Wu - Diamond Bar CA

Assignee:

Western Digital Corporation - Irvine CA

International Classification:

G11C 2900

US Classification:

371 401

Abstract:

An intelligent disk drive employing a controller which performs high speed error correction and miscorrection detection using a finite field processor. The error correction code is defined over a finite field and the error detection code is defined over an extension field of the finite field. The finite field processor performs calculation over both the finite field and extension field to provide high speed error correction and correction validation.