Bing Z Zhu

US Patent:

7725171, May 25, 2010

Filed:

Aug 31, 2007

Appl. No.:

11/848606

Inventors:

Bing Zhu - Sunnyvale CA, US
Jay Snell - Studio City CA, US
Laleh Jalali - Moorpark CA, US
Katie Hoberman - S. Pasadena CA, US
Elizabeth Bacon - Portland OR, US

Assignee:

Pacesetter, Inc. - Sunnyvale CA

International Classification:

A61B 5/04

US Classification:

600509

Abstract:

A method and system are provided for tracking ST shift data. The system includes an implantable medical device having an input configured to receive cardiac signals. Each cardiac signal has an associated heart rate and includes a segment of interest. The implantable medical device further includes a processor configured to determine segment variations of the segment of interest in the cardiac signals. The processor determines a heart rate associated with each of the segment variations with each heart rate falling within a corresponding heart rate range. The implantable medical device also includes a memory configured to store a group of histograms for a corresponding group of heart rate ranges. The histograms store distributions for the segment variations within corresponding heart rate ranges.

US Patent:

7930017, Apr 19, 2011

Filed:

May 25, 2007

Appl. No.:

11/753759

Inventors:

Eric S. Fain - Menlo Park CA, US
Jay Snell - Studio City CA, US
Katie Hoberman - S. Pasadena CA, US
Laleh Jalali - Moorpark CA, US
Bing Zhu - Sunnyvale CA, US
Jeffery D. Snell - Chatsworth CA, US

Assignee:

Pacesetter, Inc. - Sunnyvale CA

International Classification:

A61B 5/04

US Classification:

600509, 600515, 607 14

Abstract:

A method and system are provided for trending variation in coronary burden across multiple heart rate ranges. The method and system include obtaining cardiac signals having a segment of interest over a period of time where each cardiac signal has an associated heart rate that falls within at least one heart rate range. Segment variations of the segment of interest are determined and grouped based on the associated heart rates to produce distributions of segment variations that are associated with the heart rate ranges. Trending information is produced by automatically comparing the distributions of segment variations between different heart rate ranges.

US Patent:

8108194, Jan 31, 2012

Filed:

Dec 30, 2008

Appl. No.:

12/346004

Inventors:

Bing Zhu - Fremont CA, US
Tung-sun Tung - Cupertino CA, US
Jingbo Gao - Saratoga CA, US

Assignee:

Cadence Design Systems, Inc. - San Jose CA

International Classification:

G06F 17/50
G06F 9/455

US Classification:

703 14, 703 18, 716109

Abstract:

A method of analyzing power consumption for a DUT (device under test) that includes an integrated circuit or an electronic system includes: providing emulation data for states of the DUT in one or more time windows; determining operational mode values from the emulation data and a selection of operational modes that characterize circuit behavior in the one or more time windows; dividing each time window into one or more segments based on at least one power criterion; determining power-activity values for the one or more segments; determining power-consumption values for the one or more segments from the power-activity values; using the power-activity values and the power-consumption values to determine relative power activity across the one or more segments and adjusting the one or more segments to target high power activity over operational modes in the one or more time windows; and saving one or more values for power activity of the DUT in a computer-readable medium.

US Patent:

8352235, Jan 8, 2013

Filed:

Dec 28, 2007

Appl. No.:

11/966602

Inventors:

Bing Zhu - Fremont CA, US
Platon Beletsky - San Jose CA, US

Assignee:

Cadence Design Systems, Inc. - San Jose CA

International Classification:

G06G 7/54
G06F 17/50
G06F 9/455

US Classification:

703 18, 703 14, 703 23, 703 28, 716133

Abstract:

A method for modeling power management in an integrated circuit (IC) includes: specifying a circuit design and a power architecture for the IC, the power architecture including a plurality of power domains for specifying power levels in different portions of the IC; determining an emulation module for the IC by including one or more hardware elements for modeling the power architecture in the emulation module; and using the emulation module to simulate changing power levels in one or more power domains of the IC including a power shutoff in at least one power domain.

US Patent:

8453086, May 28, 2013

Filed:

Jun 5, 2006

Appl. No.:

11/422314

Inventors:

Tung-Sun Tung - Cupertino CA, US
Bing Zhu - Fremont CA, US

Assignee:

Cadence Design Systems, Inc. - San Jose CA

International Classification:

G06F 17/50

US Classification:

716109, 716133

Abstract:

The invention described here is the methods of using a hardware-based functional verification system to mimic a design under test (DUT), under intended application environment and software, to record or derive the transition activities of all circuits of the DUT, then calculate the total or partial power consumption during the period of interest. The period of interest is defined by the user in terms of “events” which are the arbitrary states of the DUT. Furthermore, the user can specify the number of sub-divisions required between events thus vary the apparent resolution of the power consumption profile.

US Patent:

8467862, Jun 18, 2013

Filed:

Mar 16, 2011

Appl. No.:

13/049805

Inventors:

Jay Snell - Studio City CA, US
Bing Zhu - San Jose CA, US
Katie Hoberman - Winnetka CA, US
Harish Krishnaswamy - Mountain View CA, US

Assignee:

PaceSetter, Inc. - Sylmar CA

International Classification:

A61B 5/04

US Classification:

600509, 600516

Abstract:

Cardiac activity is sensed over a plurality of heart beats defining a beat set. For each beat in the set, it is determined whether the beat is a non-classified beat (e. g. , paced beat, a beat outside of a specified heart rate range or a PVC), or a classified beat. For each classified beat, it is determined whether the beat is a non-detect beat, a minor beat or a major beat. Counts of classified beats, non-classified beats, major beats, minor beats, and non-detect beats are maintained. The beat set is declared to be one of a non-classified set, a major set, a minor set or a non-detect set based on the relative counts of classified beats, non-classified beats, major beats, minor beats, and non-detect beats. Over a period of time, counts of beat-set types are maintained and entry into and exit from ST episodes are determined based on these beat-set counts.