Qi Chen

US Patent:

7685485, Mar 23, 2010

Filed:

Oct 30, 2003

Appl. No.:

10/698739

Inventors:

Binh Vo - San Jose CA, US
Wan-Pin Hung - Saratoga CA, US
David Huang - Fremont CA, US
Peter Boyle - Mountain View CA, US
Qi Richard Chen - Sunnyvale CA, US
Kaiyu Ren - San Jose CA, US
Adam J. Wright - San Jose CA, US
John DiCosola - Pleasanton CA, US
Laiq Chughtai - Fremont CA, US
Seng Yew Lim - Penang, MY

Assignee:

Altera Corporation - San Jose CA

International Classification:

G01R 31/28

US Classification:

714725, 714 25

Abstract:

Techniques are provided for isolating failed routing resources on a programmable circuit. Failing test patterns and the test logs are fed to a Statistical Failure Isolation (SFI) tool. The SFI tool extracts failing paths from the test patterns. A statistical analysis is performed on interconnect resources related to failing paths. The resources on the paths are then tallied to create a histogram of resources. These resources are then be fed into an Adaptive Failure Isolation (AFI) tool to auto-generate verification patterns. A tester uses the verification patterns to isolate failed interconnect resources.

US Patent:

8314647, Nov 20, 2012

Filed:

Jun 13, 2011

Appl. No.:

13/159052

Inventors:

Daniel Shimizu - Sunnyvale CA, US
Chi-Shung David Wang - Sunnyvale CA, US
Qi Chen - Sunnyvale CA, US

Assignee:

Advanced Micro Devices, Inc. - Sunnyvale CA

International Classification:

H03K 3/01

US Classification:

327534

Abstract:

Embodiments of a dynamic leakage control circuit for use with graphics processor circuitry are described. The dynamic leakage control circuit selectively enables back biasing of the transistors comprising the graphics processor circuits during particular modes of operation. The back biasing levels are controlled by two separate power rails. A first power rail is coupled to an existing power supply and the second power rail is coupled to a separate adjustable voltage regulator. A separate voltage regulator may also be provided for the first power rail. A hardware-based state machine or software process is programmed to detect the occurrence of one or more modes of operation and adjust the voltage regulators for the first and second power rails to either enable or disable the back biasing state of the circuit, or alter the threshold voltage of the circuit within a specified voltage range.

US Patent:

20020123079, Sep 5, 2002

Filed:

Oct 17, 2001

Appl. No.:

09/978105

Inventors:

Qi Chen - Fremont CA, US

International Classification:

G01N033/53
G01N033/569

US Classification:

435/007220

Abstract:

A method for detecting the occurrence of a biological reaction or quantitating its result employing superparamagnetic particles is disclosed. The particles are first conjugated or adsorbed to identical biomolecules which are members of a biological binding pair and the conjugates or adsorbates so formed are then contacted with a liquid or solid sample known to contain, or suspected of containing, molecules that are the biological binding partners of the biomolecules in the conjugates or adsorbates. The conjugates or adsorbates are digested with the liquid or solid sample for a time sufficient to enable the formation of a tightly bound, three-dimensional mass comprised of interlinked biomolecules and bound superparamagnetic particles. The mass is exposed to a magnetic filed for the shortest period necessary to induce magnetization of the superparamagnetic particles, whereupon the magnetic field is immediately removed. It has been found that the mass exhibits, in concert, a measurable nonpermanent magnetization which persists for at least 20 minutes following exposure to the magnetic field. If it is desired only to confirm that reaction occurred, this may be done by confirming the existence of a magnetic signal with a suitable instrument. If a quantitative result is desired, the intensity of the magnetization may be measured over time and correlated to the quantitative concentration, or known number, of one of the biomolecules in the biological binding pair.

US Patent:

20080197914, Aug 21, 2008

Filed:

Feb 15, 2007

Appl. No.:

11/707602

Inventors:

Daniel Shimizu - Sunnyvale CA, US
Chi-Shung David Wang - Sunnyvale CA, US
Qi Chen - Sunnyvale CA, US

International Classification:

G05F 3/02

US Classification:

327541, 327544

Abstract:

Embodiments of a dynamic leakage control circuit for use with graphics processor circuitry are described. The dynamic leakage control circuit selectively enables back biasing of the transistors comprising the graphics processor circuits during particular modes of operation. The back biasing levels are controlled by two separate power rails. A first power rail is coupled to an existing power supply and the second power rail is coupled to a separate adjustable voltage regulator. A separate voltage regulator may also be provided for the first power rail. A hardware-based state machine or software process is programmed to detect the occurrence of one or more modes of operation and adjust the voltage regulators for the first and second power rails to either enable or disable the back biasing state of the circuit, or alter the threshold voltage of the circuit within a specified voltage range.

US Patent:

20110246479, Oct 6, 2011

Filed:

Mar 28, 2011

Appl. No.:

13/073377

Inventors:

Qi Chen - Hayward CA, US
Hai Feng Li - Beijing, CN
Guang Zhou Zhang - Beijing, CN

Assignee:

INTERNATIONAL BUSINESS MACHINES CORPORATION - Armonk NY

International Classification:

G06F 17/30

US Classification:

707743, 707E17002

Abstract:

An index is created for a database by selecting at least one column of a database table as a basis to create the index, generating at least one index of a tree structure according to the at least one column, where a pointer stored in a leaf node of the at least one index is null. In an example embodiment, a value to a pointer is stored in a leaf node according to an intermediate result in response to the intermediate result being generated, where the pointer stored in the leaf node points to a data page storing the intermediate result. The created index can be reused and the intermediate result can be effectively used, such that the efficiency of database operation is improved.

US Patent:

20210209942, Jul 8, 2021

Filed:

Mar 19, 2021

Appl. No.:

17/207102

Inventors:

- Beijing, CN
Qi Chen - Burlingame CA, US

International Classification:

G08G 1/052
G08G 1/01

Abstract:

A vehicle can include an on-board data processing system that receives velocity data captured by one or more sensors of the vehicle. As a vehicle travels along a route, the on-board data processing system can process the velocity data to identify potential vehicle stops. For example, the system can detect a trough in velocity values, and determine whether a velocity value at the trough is below a threshold velocity value. If the velocity value is below the threshold velocity value, the system can determine whether any vehicle stops were previously detected within a threshold time of the time corresponding to the trough. If a vehicle stop was previously detected, the system may detect that a stop occurred at the time of the trough if the velocity of the vehicle increased by at least a velocity ripple value between the time of the previously-detected stop and the time of the trough.

US Patent:

20210165823, Jun 3, 2021

Filed:

Dec 14, 2020

Appl. No.:

17/121544

Inventors:

- San Jose CA, US
Vaduvur Bharghavan - Morgan Hill CA, US
Qi Chen - San Jose CA, US
Zhiling Liu - Sunnyvale CA, US
Kun Qian - Stanford CA, US

International Classification:

G06F 16/58
G06N 3/04
G06F 16/532
G06F 16/583
G06Q 20/38

Abstract:

Logo candidates for a specific ISO data can be identified from external resources based on the enriched merchant data. Low quality images of the logo candidates are filtered out with image analysis including entropy ratio evaluations of the logo candidates. Also, the logo candidates are processed with high quality filtering including classification of the logo candidates with a deep learning classifier for distinguishing logos from non-logos. A logo from the logo candidates is selected to associate with the ISO data packets. A display having the selected logo associated with a transaction of the ISO data packets can be generated for display to users.

US Patent:

20210136581, May 6, 2021

Filed:

Jan 14, 2021

Appl. No.:

17/149356

Inventors:

- Beijing, CN
Qi Chen - Burlingame CA, US

International Classification:

H04W 12/08
G06K 7/10
G06K 9/00
H04W 4/40
H04W 4/44
H04W 4/02
H04W 12/63

Abstract:

Systems and methods are provided for smart-landmark-based positioning. Such methods may include detecting, using a sensor mounted on a vehicle, a landmark object, obtaining landmark information of the detected landmark object, the landmark information including identification of the landmark object and an encrypted location of the landmark object, transmitting, from the vehicle over a wireless network, a query including at least part of the obtained landmark information, receiving, by the vehicle over the wireless network, a query response including additional information of the landmark.