James M Ng

US Patent:

7467226, Dec 16, 2008

Filed:

Oct 5, 2004

Appl. No.:

10/959707

Inventors:

Steven V. Luong - San Jose CA, US
Heidi H. Ou - San Jose CA, US
Gerald Redwine - Raleigh NC, US
James L. Ng - Mebane NC, US
Kevin M. Eckhardt - Durham NC, US
Scott R. Sturgess - Grimbergen, BE
Steven Moore - Holly Springs NC, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04L 12/56

US Classification:

709238, 709227, 709239, 370238, 370254

Abstract:

Disclosed are methods and apparatus for flooding link state packets or packet data units (LSP's) from a first node to one other LSP receiving node, where the LSP's are flooded in an order that is related to relative costs of various paths emanating from the first node. That is, the first node sends its own LSP first since the first node has no cost relative to itself. The first node then sends other LSP's that are associated with a plurality of other LSP sending nodes that have previously flooded their LSP's to the first node, and these other LSP's are sent by the first node to the other LSP receiving node in an order related to the relative costs associated with the paths from the first node to each of the other LSP sending nodes which had previously sent the other LSP's to the first node.

US Patent:

7805537, Sep 28, 2010

Filed:

Dec 11, 2008

Appl. No.:

12/332713

Inventors:

Steven V. Luong - San Jose CA, US
Heidi H. Ou - San Jose CA, US
Gerald Redwine - Raleigh NC, US
James L. Ng - Mebane NC, US
Kevin M. Eckhardt - Durham NC, US
Scott R. Sturgess - Grimbergen, BE
Steven Moore - Holly Springs NC, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04L 12/56

US Classification:

709238, 709227, 709228, 370238

Abstract:

Disclosed are methods and apparatus for flooding link state packets or packet data units (LSP's) from a first node to one other LSP receiving node, where the LSP's are flooded in an order that is related to relative costs of various paths emanating from the first node. That is, the first node sends its own LSP first since the first node has no cost relative to itself. The first node then sends other LSP's that are associated with a plurality of other LSP sending nodes that have previously flooded their LSP's to the first node. These other LSP's are sent by the first node to the other LSP receiving node in an order related to the relative costs associated with the paths from the first node to each of the other LSP sending nodes which had previously sent the other LSP's to the first node.

US Patent:

20200225733, Jul 16, 2020

Filed:

Mar 26, 2020

Appl. No.:

16/831004

Inventors:

- San Jose CA, US
Gaku IKEDO - Chigasaki-shi, JP
Naoyuki KAGAMI - Fujisawa-shi, JP
James Jinshi NG - Fremont CA, US
Brian Kenneth TANNER - San Jose CA, US

International Classification:

G06F 1/3296
G06F 3/06
G06F 1/3287
G11B 19/20

Abstract:

The present disclosure generally relates to an electronic circuit and method of operating thereof to back up write cache data on DDR memory in data storage devices during an emergency power off (EPO). The method involves using a power management integrated circuit (PMIC), a combo driver and one MOSFET for regulator output. The method involves detecting a voltage value that is below a predetermined threshold value, retracting a write head away from a hard disk drive (HDD), backing up data, and then resetting the HDD after the backup is complete. The backing up and retraction may occur in parallel or in sequence. The method utilizes the spindle back-electromotive force (BEMF) power to have sufficient power to make the backup. If the power from the spindle BEMF is too low, then the retraction is suspended and a high impedance is present to lighten the load until the BEMF recovers before the power on reset. As such, the back-up data is not reset and volatized by a lack of power.