Patrick J Liu

US Patent:

7317689, Jan 8, 2008

Filed:

Feb 10, 2003

Appl. No.:

10/364623

Inventors:

Patrick Chung-You Liu - Naperville IL, US

Assignee:

Foundry Networks, Inc. - Santa Clara CA

International Classification:

H04L 1/00

US Classification:

370246, 370252

Abstract:

High-speed transceiver devices, such as GBIC-type transceivers, are accessed and addressed. Identification information (including manufacturer name, model, compliance codes) is placed in data fields of the transceivers. An algorithm checks each port in each module of a host system to determine if a transceiver is present. If a particular transceiver is present, then algorithms store the port address of the transceiver in memory and enable the transceiver to be read from or written to. Reading from the transceiver includes reading the identification information, and writing to the transceiver includes writing the identification information. If a transceiver is initially determined not to be present or if the reading/writing/enabling processes fail, then a recovery process determines if the transceiver was present the last time it was checked. If it was present the last time, then the process continues to try to recover the transceiver data—otherwise, the port is marked as empty.

US Patent:

7872979, Jan 18, 2011

Filed:

Dec 11, 2007

Appl. No.:

11/954174

Inventors:

Patrick Chung-You Liu - Naperville IL, US

Assignee:

Foundry Networks, LLC - San Jose CA

International Classification:

H04L 1/00

US Classification:

370246, 370252

Abstract:

High-speed transceiver devices, such as GBIC-type transceivers, are accessed and addressed. Identification information (including manufacturer name, model, compliance codes) is placed in data fields of the transceivers. An algorithm checks each port in each module of a host system to determine if a transceiver is present. If a particular transceiver is present, then algorithms store the port address of the transceiver in memory and enable the transceiver to be read from or written to. Reading from the transceiver includes reading the identification information, and writing to the transceiver includes writing the identification information. If a transceiver is initially determined not to be present or if the reading/writing/enabling processes fail, then a recovery process determines if the transceiver was present the last time it was checked. If it was present the last time, then the process continues to try to recover the transceiver data—otherwise, the port is marked as empty.

US Patent:

8320401, Nov 27, 2012

Filed:

Dec 27, 2010

Appl. No.:

12/978968

Inventors:

Patrick Chung-You Liu - Naperville IL, US

Assignee:

Foundry Networks, LLC - San Jose CA

International Classification:

H04L 12/66

US Classification:

370463

Abstract:

High-speed transceiver devices, such as GBIC-type transceivers, are accessed and addressed. Identification information (including manufacturer name, model, compliance codes) is placed in data fields of the transceivers. An algorithm checks each port in each module of a host system to determine if a transceiver is present. If a particular transceiver is present, then algorithms store the port address of the transceiver in memory and enable the transceiver to be read from or written to. Reading from the transceiver includes reading the identification information, and writing to the transceiver includes writing the identification information. If a transceiver is initially determined not to be present or if the reading/writing/enabling processes fail, then a recovery process determines if the transceiver was present the last time it was checked. If it was present the last time, then the process continues to try to recover the transceiver data—otherwise, the port is marked as empty.

US Patent:

20100141466, Jun 10, 2010

Filed:

Apr 5, 2002

Appl. No.:

10/116899

Inventors:

Mary Thanhhuong Thi Nguyen - Milpitas CA, US
Patrick Chung-You Liu - Naperville IL, US

International Classification:

G08B 21/00

US Classification:

340687

Abstract:

A system and method automatically maintains data indicating a type of transmission medium connected at a port in a data switch device. The method comprises reading first transmission medium type data representing whether a first transmission medium type is connected to the port. A check is performed to determine whether a stored first transmission medium value is updated based at least in part on the first transmission medium type data, the first transmission medium value representing whether the first transmission medium type is actively connected. The method also involves reading second transmission medium type data representing whether a second transmission medium type is connected to the port. A check is performed to determine whether a stored second transmission medium value is updated based at least in part on the second transmission medium type data, the second transmission medium value representing whether the second transmission medium type is actively connected.