Richard W Lin

US Patent:

6636904, Oct 21, 2003

Filed:

Nov 18, 1999

Appl. No.:

09/443687

Inventors:

Walter G. Fry - Houston TX
Robert E. Krancher - Houston TX
Richard S. Lin - Houston TX

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

G06F 300

US Classification:

710 8, 710 9, 710 10, 710 38, 710303, 710311, 710312, 710313, 710316

Abstract:

A computer system reroutes a configuration cycle intended for an unused system bus address line to the IDSEL, or equivalent, configuration chip select input pin of a device which uses the same system bus address line as another device on the system bus. The computer system has a PCI bus to which a programmable logic device and an electronically-controlled switch are connected. The programmable logic device detects PCI bus configuration cycles associated with a PCI bus AD line that is otherwise unused as a chip select during configuration cycles. When the logic device detects a configuration cycle associated with the unused AD line, the logic device asserts a control signal to the electronically-controlled switch. The switch then connects the previously unused AD line to the AD line that is connected to the IDSEL input pin of the PCI device that experiences the conflict. The PCI device then effectively responds to the configuration read or write cycle as if its IDSEL input pin was hardwired to the switched AD line.

US Patent:

6654896, Nov 25, 2003

Filed:

May 16, 2000

Appl. No.:

09/571475

Inventors:

Scott P. Saunders - Spring TX
Robert E. Krancher - Houston TX
Richard S. Lin - Houston TX

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

G06F 126

US Classification:

713323, 713300, 713310, 710260

Abstract:

A system and method are disclosed for handling devices that assert a wake-up signal in an improper fashion. It is observed that any wake-up signals that remain asserted as the computer system enters a low-power mode are likely produced by non-compliant cards, and to assure proper functioning of the system, it is desirable for the computer system to selectively block assertion of asserted signals from non-compliant cards. In one embodiment the computer system includes an expansion bus coupled to a bus bridge, and a signal gate. The expansion bus includes a wake-up signal that the signal gate can be configured to isolate from the bus bridge. The signal gate is preferably controlled by the power management controller. The power management controller sets the signal gate to isolate the signal from the bus bridge if the controller determines that wake-up signal is being driven in a non-standard manner. The non-compliance may be determined by: (a) detecting a transition of the computer to a reduced power state; (b) pausing for a predetermined delay; and (c) sampling the wake-up signal to identify any asserted wake-up signals.

US Patent:

7028128, Apr 11, 2006

Filed:

Jan 30, 2002

Appl. No.:

10/060727

Inventors:

Tim Zhang - Spring TX, US
Robert Hurbanis, Jr. - Tomball TX, US
Richard Lin - Houston TX, US
Jeff Jeansonne - Houston TX, US
John Chow - Houston TX, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

G06F 13/14

US Classification:

710305, 710303, 710 38, 361139

Abstract:

A method and apparatus are disclosed for allowing a plurality of network connectors to utilize a single network controller within a docking station or portable device. A switching device connects the plurality of network connectors with the network controller. By connecting the network connectors into the switching device, the docking station and the portable device require a single network controller to handle the network communication. The switching device enables the network controller to continue to operate without disrupting the portable device when the network connection is changed from the docking station to the portable device or vice versa. The method and apparatus are useful in reducing the complexity of the total system while increasing functionality.

US Patent:

7043570, May 9, 2006

Filed:

Sep 18, 2003

Appl. No.:

10/664746

Inventors:

Walter G. Fry - Houston TX, US
Robert E. Krancher - Houston TX, US
Richard S. Lin - Houston TX, US

Assignee:

Hewlett-Packard Development Company, LP. - Houston TX

International Classification:

G06F 3/00

US Classification:

710 8, 710 9, 710 10, 710 38, 710303, 710311, 710312, 710313, 710316

Abstract:

A computer system with dynamic device identification redirection. The computer system may include a processor, a system memory, and a bridge logic device having a peripheral bus interface. The bridge logic device is associated with at least a first address line, which is also associated with a first peripheral device. The computer system may also include a logic device coupled to the peripheral bus that swaps a second address line for the first address line when a peripheral bus cycle is run to the first address line.

US Patent:

7457904, Nov 25, 2008

Filed:

Dec 16, 2004

Appl. No.:

11/014409

Inventors:

Richard S. Lin - Houston TX, US
Jeffrey K. Jeansonne - Houston TX, US
Walter G. Fry - Houston TX, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

G06F 13/00
G06F 13/36
G06F 3/00
G06F 13/38
G06F 1/12
G06F 1/04

US Classification:

710302, 710 36, 710 66, 710306, 713400, 713600, 327291

Abstract:

In at least some embodiments, a method comprises receiving an external card detection signal that indicates that a hot-pluggable card is coupled to a computer system and activating at least one reference clock signal of a scalable reference clock platform based on the external card detection signal. The method further comprises synchronizing clock signals embedded in data packets transmitted between the hot-pluggable card and the computer system with another clock signal bases on the at least one reference clock signal.

US Patent:

20040070371, Apr 15, 2004

Filed:

Oct 11, 2002

Appl. No.:

10/269610

Inventors:

Lih Chern - Houston TX, US
Lee Atkinson - Houston TX, US
David DeLisle - Spring TX, US
Richard Lin - Houston TX, US
Dallas Barlow - Houston TX, US

Assignee:

Compaq Information Technologies Group, L.P. - Houston TX

International Classification:

H02J007/00

US Classification:

320/136000

Abstract:

A battery operated computer system implements a power management scheme based on battery behavior. The battery behavior that is monitored as part of the power management scheme may include battery temperature, current, voltage, and/or capacity. In response to one or more of these battery parameters exceeding a threshold, the computer transitions itself to a lower power consumption mode. In so doing, the potential for the battery to shut itself off due to being over-extended (e.g., over current) is reduced.

US Patent:

20040128571, Jul 1, 2004

Filed:

Oct 23, 2003

Appl. No.:

10/692209

Inventors:

Scott Saunders - Spring TX, US
Robert Krancher - Houston TX, US
Richard Lin - Houston TX, US

International Classification:

G06F001/26

US Classification:

713/300000

Abstract:

A system and method are disclosed for handling devices that assert a wake-up signal in an improper fashion. It is observed that any wake-up signals that remain asserted as the computer system enters a low-power mode are likely produced by non-compliant cards, and to assure proper functioning of the system, it is desirable for the computer system to selectively block assertion of asserted signals from non-compliant cards. In one embodiment the computer system includes an expansion bus coupled to a bus bridge, and a signal gate. The expansion bus includes a wake-up signal that the signal gate can be configured to isolate from the bus bridge. The signal gate is preferably controlled by the power management controller. The power management controller sets the signal gate to isolate the signal from the bus bridge if the controller determines that wake-up signal is being driven in a non-standard manner. The non-compliance may be determined by: (a) detecting a transition of the computer to a reduced power state; (b) pausing for a predetermined delay; and (c) sampling the wake-up signal to identify any asserted wake-up signals. In the presence of non-compliant expansion cards, the disclosed embodiments may advantageously assure correct operation of the system with minimal additional cost.

US Patent:

20070091659, Apr 26, 2007

Filed:

Oct 25, 2005

Appl. No.:

11/258509

Inventors:

Richard Lin - Houston TX, US
Monji Jabori - Houston TX, US
Thomas Sawyers - Hempstead TX, US

International Classification:

H02M 7/217

US Classification:

363127000

Abstract:

In at least some embodiments, a power converter comprises control logic adapted to be mounted on a first circuit board and a power component adapted to be electrically coupled to the control logic and adapted to be mounted on a second circuit board. The first circuit board mechanically attaches to the second circuit board. In other embodiments, a system comprises a system board, a module attached to the system board, and a power converter comprising a controller electrically coupled to a power component. The controller is mounted on the module and the power component is mounted on the system board.