James P Yu

US Patent:

20060026329, Feb 2, 2006

Filed:

Jul 30, 2004

Appl. No.:

10/903401

Inventors:

James Yu - Houston TX, US

International Classification:

G06F 13/36

US Classification:

710309000

Abstract:

The rewind arbiter system provides a system and method for arbitrating a device. Briefly described, one embodiment comprises a plurality of controlled devices configured to access a shared component and a rewind arbiter configured to arbitrate among a plurality of requests received from the controlled devices, wherein one of the controlled devices communicating a request that is selected during arbitration is then granted access to the shared component. The rewind arbiter further comprising; an arbitration scheme configured to grant arbitrated requests to the controlled devices, a verification scheme configured to verify that the controlled device successfully completes communication with the shared component, and a rewind scheme configured to cause the arbitration scheme to rewind back to the controlled device that has failed to successfully complete communication with the shared component such that the failed control device is granted a second arbitrated request.

US Patent:

20120159060, Jun 21, 2012

Filed:

Apr 6, 2011

Appl. No.:

13/081095

Inventors:

James Yu - Houston TX, US
Gary J. Piccirillo - Cypress TX, US
Peter B. Chon - Cypress TX, US

International Classification:

G06F 12/16
G06F 13/00

US Classification:

711105, 711E12103

Abstract:

Disclosed is a power isolation and backup system. When a power fail condition is detected, temporary storage is flushed to an SDRAM. After the flush, interfaces are halted, and power is removed from most of the chip except the SDRAM subsystem. The SDRAM subsystem copies data from an SDRAM to a flash memory. On the way, the data may be encrypted, and/or a data integrity signature calculated. To restore data, the SDRAM subsystem copies data from the flash memory to the SDRAM. On the way, the data being restored may be decrypted, and/or a data integrity signature checked.

US Patent:

20150160886, Jun 11, 2015

Filed:

Dec 23, 2013

Appl. No.:

14/138641

Inventors:

- SAN JOSE CA, US
Gary J. Piccirillo - Houston TX, US
James K. Yu - Houston TX, US

Assignee:

LSI CORPORATION - SAN JOSE CA

International Classification:

G06F 3/06

Abstract:

Disclosed is a system and method for using a programmable sequencer to produce a required command for a particular standard, or format, being used by the PCIe disk drive. A PCIe disk drive may support a different standard, or format. A mix of any number of different standards, or formats, is permitted in the system and method. For each message, a different set of instructions can be selected for the conversion process.

US Patent:

20140365736, Dec 11, 2014

Filed:

Jun 14, 2013

Appl. No.:

13/917735

Inventors:

- San Jose CA, US
James Yu - Houston TX, US
Robert L. Sheffield - Longmont CO, US

International Classification:

G06F 12/14

US Classification:

711145

Abstract:

Methods for managing region lock in a storage controller are disclosed. Upon receiving in a hardware based region lock management circuit a data request, the region lock management circuit determines a lock type of a region lock specified in the data request and conditionally creates a region lock data structure, wherein the region lock data structure is conditionally created based on the type of the region lock requested. The region lock management circuit further determines whether the data request is requesting access to at least a portion of a locked data region and the lock type of the locked data region. If the data request is requesting access to at least a portion of the locked data region and the lock type of the locked data region permits firmware diversion, the region lock management circuit diverts the data request to a storage controller firmware processor for further processing.