Christopher L Chen

US Patent:

6385710, May 7, 2002

Filed:

Feb 23, 1996

Appl. No.:

08/605881

Inventors:

Gary S. Goldman - San Jose CA
Christopher Chen - Danville CA
Douglas W. Forehand - Mountain View CA

Assignee:

Sun Microsystems, Inc. - Palo Alto CA

International Classification:

G06F 1200

US Classification:

711169, 711168, 711170, 711161, 711211, 3642328, 364238

Abstract:

In accordance with the present invention, a cache memory subsystem includes a processor, a cache control unit and a SRAM serving as the cache memory. The SRAM is a synchronous SRAM. The cache control unit provides appropriately timed control signals to the SRAM when the processor is accessing the cache memory. The SRAM can be either a pipelined architecture SRAM (register output SRAM) or a flow-through access architecture SRAM (latch output SRAM). The cache control unit is selectably configured to operate in a pipelined mode (1-1-1) or a flow-through (2-2) mode. The cache control unit is configured in the 1-1-1 mode when the SRAM is a pipelined architecture SRAM having a clock rate equal to the processor. When the SRAM is a flow-through architecture SRAM that cannot be clocked at the same rate as the processor, the cache control unit is configured in the 2-2 mode and the SRAM is clocked at a clock rate half of the processor clock rate.

US Patent:

20050152338, Jul 14, 2005

Filed:

Jan 14, 2004

Appl. No.:

10/758350

Inventors:

Christopher Chen - San Francisco CA, US
Victor Zhao - San Francisco CA, US

International Classification:

H04L012/66

US Classification:

370352000

Abstract:

A system and method for managing voice communications routes a first telephone call from a remote source to a remote destination using a second telephone call. The first telephone call is made through a first network, which may be one of a circuit switching network and a packet switching network, while the second telephone call is made through a second network, which is one of the circuit and packet switching network that differs from the first network. The second telephone call is initiated in response to the first telephone call. The first and second telephone calls are then interconnected to connect the remote source to the remote destination.

US Patent:

20050152347, Jul 14, 2005

Filed:

Jan 14, 2004

Appl. No.:

10/757904

Inventors:

Christopher Chen - San Francisco CA, US
Victor Zhuo - San Francisco CA, US

International Classification:

H04L012/66

US Classification:

370356000, 370401000

Abstract:

A system and method for managing voice communications utilizes a switching unit to selectively interconnect signal paths between a telephone, a circuit switching network and a packet switching network at the premises of a telephone line subscriber to selectively route telecommunication signals between the telephone, the circuit switching network and the packet switching network. Thus, the switching unit allows one or more telephone calls to be established through the circuit switching network and/or through the packet switching network.

US Patent:

20050260975, Nov 24, 2005

Filed:

May 19, 2004

Appl. No.:

10/848954

Inventors:

Christopher Chen - San Francisco CA, US
Victor Zhuo - San Francisco CA, US

International Classification:

H04B001/38
H04M001/00

US Classification:

455415000, 455567000, 455426100

Abstract:

A telecommunications system and method for providing a notification of the availability of a target communication device to receive a call monitors the target communication device to effectuate a generation of a notification signal at a calling communication device when the target communication device is available to receive a call. The monitoring of the target communication device may involve receiving the latest status information of the target communication device from a network, such as a Voice over Internet Protocol (VoIP) network or a cellular telephone network.

US Patent:

20220374737, Nov 24, 2022

Filed:

May 24, 2021

Appl. No.:

17/328451

Inventors:

- San Francisco CA, US
Shravan SUNKADA - Kensington CA, US
Christopher CHEN - San Francisco CA, US
John SEARS - Berkeley CA, US

International Classification:

G06N 5/04
G06N 20/00
G07C 5/00
G06F 16/29

Abstract:

The disclosed embodiments provide techniques for scoring a driver or vehicle. In one embodiment, a method is disclosed comprising receiving metrics associated with a vehicle; generating a deviation vector based on the metrics and a plurality of aggregated values corresponding to the metrics; computing a driver update value based on the deviation vector and a plurality of model parameters, each of the plurality of model parameters corresponding to the metrics; and computing a driver score based on the driver update value, a previous score, and a learning rate.

US Patent:

20200213186, Jul 2, 2020

Filed:

Mar 12, 2020

Appl. No.:

16/817174

Inventors:

- San Francisco CA, US
Anthony Roberts - San Francisco CA, US
Berk D. Demir - Menlo Park CA, US
Christopher Chen - Portland OR, US

International Classification:

H04L 12/24
H04L 12/931
H04L 12/26
H04L 12/947

Abstract:

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for detecting sources of computer network failures. One of the methods includes identifying a network flow in a computer network between a source and a destination; performing a first probe to determine whether there is end-to-end connectivity between the source and the destination; in response to determining that there is no end-to-end connectivity between the host and the destination, performing one or more additional probes including a second probe to determine whether each hop in the path of the network flow between the source and the destination is operational including requesting that the source transmit a respective first trace diagnostic packet to each hop in the path of the network flow; and determining whether at least one link of the computer network that is part of the path of the network flow has failed based on the results.

US Patent:

20190149398, May 16, 2019

Filed:

Nov 10, 2017

Appl. No.:

15/809836

Inventors:

- San Francisco CA, US
Anthony Roberts - San Francisco CA, US
Berk D. Demir - Menlo Park CA, US
Christopher Chen - Portland OR, US

International Classification:

H04L 12/24
H04L 12/26
H04L 12/947

Abstract:

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for detecting sources of computer network failures. One of the methods includes identifying a network flow in a computer network between a source and a destination; performing a first probe to determine whether there is end-to-end connectivity between the source and the destination; in response to determining that there is no end-to-end connectivity between the host and the destination, performing one or more additional probes including a second probe to determine whether each hop in the path of the network flow between the source and the destination is operational including requesting that the source transmit a respective first trace diagnostic packet to each hop in the path of the network flow; and determining whether at least one link of the computer network that is part of the path of the network flow has failed based on the results.

US Patent:

20180300414, Oct 18, 2018

Filed:

Jul 19, 2017

Appl. No.:

15/654007

Inventors:

- Menlo Park CA, US
Jeremy Harrison Goldberg - San Francisco CA, US
Kemal El Moujahid - Mountain View CA, US
Yoram Talmor - Cupertino CA, US
Chih Shao Lee - Sunnyvale CA, US
Seyed Ahmad Anvari - Mountain View CA, US
Michael Allen Anvari - Mountain View CA, US
Haotian Zhang - Fremont CA, US
Matthew Robert Anger - San Francisco CA, US
Nicolas Andrij Bushak - San Francisco CA, US
Salahuddin Choudhary - Palo Alto CA, US
Christopher Bing Chen - San Francisco CA, US

International Classification:

G06F 17/30
G06Q 50/00
G06F 3/048

Abstract:

Techniques for ranking of selected bots are described. In one embodiment, for example, an apparatus may comprise a client front-end component operative to receive a bot contact display prompt from a client device; and send an ordered bot contact list to the client device; a bot contact list component operative to retrieve a bot contact list from a selection component, the bot contact list comprising a plurality of bot contacts; and a contact ranking component operative to determine a ranking weight for each of the plurality of bot contacts; and generate the ordered bot contact list by ordering the bot contact list based on the ranking weight. Other embodiments are described and claimed.