Ji S Wang

US Patent:

6654711, Nov 25, 2003

Filed:

Jun 15, 1999

Appl. No.:

09/333721

Inventors:

Ji Wang - Sunnyvale CA
Jiun-Der Yu - Mountain View CA
Tsutomu Imai - Suwa, JP

Assignee:

Seiko Epson Corporation - Tokyo

International Classification:

G06F 1750

US Classification:

703 13, 703 14, 703 2, 703 7

Abstract:

Techniques are provided for determining certain correction factors and using these correction factors in analyzing the vibration frequency characteristics of a piezoelectric material. The correction factors are developed based on the Mindlin plate theory and are introduced to correct the inaccuracies of higher-order thickness-shear cut-off frequencies. The analysis is preferably carried out during the design of a piezoelectric device incorporating the piezoelectric material and before production of the piezoelectric device. The design state may also include determining whether the device and its electrodes exhibit appropriate stiffness characteristics.

US Patent:

6658376, Dec 2, 2003

Filed:

Nov 30, 1999

Appl. No.:

09/451381

Inventors:

Ji Wang - Milpitas CA
Jiun-Der Yu - Mountain View CA
Tsutomu Imai - Nagano-ken, JP

Assignee:

Seiko Epson Corporation - Tokyo

International Classification:

G06F 1750

US Classification:

703 13, 703 2, 703 4, 703 6, 703 7, 703 14

Abstract:

An apparatus and method for determining certain correction factors in analyzing the vibration frequency characteristics of an electroded crystal plate. The developed correction factors are introduced to correct the inaccuracies of third-order thickness-shear cut-off frequencies. The analysis is preferably carried out during the design of a piezoelectric device incorporating the electroded crystal plate before production of the device.

US Patent:

62301136, May 8, 2001

Filed:

Dec 16, 1998

Appl. No.:

9/212816

Inventors:

Ji Wang - Mountain View CA
Tsutomu Imai - Nagano-ken, JP

Assignee:

Seiko Epson Corporation - Tokyo

International Classification:

G06F 1750
G06N 700

US Classification:

703 1

Abstract:

A method for verifying the design of piezoelectric devices includes expressing attributes of such piezoelectric device or subsystem thereof in terms of an elastic property or properties of a different subsystem or device component of the piezoelectric device. Such piezoelectric device may include a layer of piezoelectric material and one or more electrodes affixed to one or more faces of such layer. Computational complexity of models of the design are reduced by modeling displacement of the electrodes as being equal to displacement of the layer of piezoelectric material during operation of such piezoelectric device. Further reduction in computational complexity is achieved by modeling electrode displacement as being uniform within each electrode. Stress in the piezoelectric device or subsystem thereof is expressed in terms of elastic properties of a different subsystem of the piezoelectric device. Further any express dependence on strain in a subsystem or device component of the piezoelectric device may be eliminated to reduce model complexity.

US Patent:

20200097577, Mar 26, 2020

Filed:

Sep 21, 2018

Appl. No.:

16/138322

Inventors:

- San Francisco CA, US
Brett Schuenemann - San Francisco CA, US
Jianming Shao - Fremont CA, US
Joshua Giblette - Spokane WA, US
Alicia Charmaine Williams - Sacramento CA, US
Samuel Paul - Foster CIty CA, US
Reddy Prasad Yerradoddi - Fremont CA, US
Ji Wang - Fremont CA, US
Jason Teller - San Bruno CA, US
Jonathan Aniano - San Mateo CA, US
Owen Winne Schoppe - Orinda CA, US

International Classification:

G06F 17/30
G06Q 30/00
G06F 3/0482

Abstract:

Disclosed are examples of systems, apparatuses, methods and computer program products for maintaining flows to manage tasks assigned to a user of a database system. Further disclosed are examples of systems, apparatuses, methods and computer program products for sharing execution logic, including but not limited to running instances of flows, across different users of a database system.

US Patent:

20200073519, Mar 5, 2020

Filed:

Nov 8, 2019

Appl. No.:

16/678711

Inventors:

- San Francisco CA, US
Avaneesh Desai - San Francisco CA, US
Megha Tiwari - San Francisco CA, US
Maxwell Lu - San Francisco CA, US
Ji Wang - Fremont CA, US
Nicolas Kruk - Durham NC, US

International Classification:

G06F 3/0483
G06F 16/23
G06F 16/25
G06F 3/0482

Abstract:

Disclosed are some implementations of systems, apparatus, methods and computer program products for facilitating the presentation of a personalized user history component in a graphical user interface (GUI), where the history component identifies primary tabs and associated sub-tabs that have been recently accessed by the user. Upon selection of one of the primary tabs, information pertaining to data records associated with the selected primary tab is presented using a link that includes identifiers of the selected primary tab and associated sub-tabs. The link may be saved or shared, enabling the primary tab and associated sub-tabs to be accessed by the user or another user.

US Patent:

20190065016, Feb 28, 2019

Filed:

Aug 31, 2017

Appl. No.:

15/693355

Inventors:

- San Francisco CA, US
Avaneesh Desai - San Francisco CA, US
Megha Tewari - San Francisco CA, US
Maxwell Lu - San Francisco CA, US
Ji Wang - Fremont CA, US
Nicolas Kruk - Durham NC, US

International Classification:

G06F 3/0483
G06F 3/0482
G06F 17/30

Abstract:

Disclosed are some implementations of systems, apparatus, methods and computer program products for facilitating the presentation of a personalized user history component in a graphical user interface (GUI), where the history component identifies primary tabs and associated sub-tabs that have been recently accessed by the user. Upon selection of one of the primary tabs, information pertaining to data records associated with the selected primary tab is presented using a link that includes identifiers of the selected primary tab and associated sub-tabs. The link may be saved or shared, enabling the primary tab and associated sub-tabs to be accessed by the user or another user.