John Zufung Wu

6542629, Apr 1, 2003

Jul 22, 1999

09/360348

John W. Wu - Rancho Palos Verdes CA
Mike C. Chen - Cerritos CA
Zhigang Fan - Webster NY
Kien A. Phong - Cerritos CA

Xerox Corporation - Stamford CT

G06K 900

382135, 356 71, 902 7

A method and apparatus for preventing or inhibiting effective reproduction of documents such as currency, checks, stock certificates, and any other printed document including a pre-defined security mark printed therein. The subject method and apparatus operate to effect a multi-step review of all digital image data acquired from a printed document to be reproduced for purposes of locating any potential security marks and further examining same for purposes of positively identifying a potential security mark as an actual security mark. If a mark is located and verified to be an authentic security mark, effective reproduction of the printed document will not be permitted and/or other security measures will be taken. A pretest of a mark consists of deleting the fine line patterns that may be printed on top of the mark by smoothing the data in an averaging process, and then determining the difference between the density of the darkest and lightest pixels in the area. A difference smaller than a predetermined value means that the mark is not valid.

D520673, May 9, 2006

Aug 6, 2004

29/210802

John Wu - El Monte CA, US

Zreative Product Inc. - El Monte CA

2705

D27148

7379908, May 27, 2008

May 16, 2001

09/855684

William J. Clancey - Portola Valley CA, US
Lee Hecht - Palo Alto CA, US
Erich A. Helfert - San Mateo CA, US
John Wu - Atherton CA, US
Edgar P. Canty - Menlo Park CA, US

Modernsoft, Inc. - Portola Valley CA

G06Q 40/00

705 35, 705 36

A computer-implemented method of populating row and column cells of an electronic financial statement document containing with formulas and data, and related apparatus. A formula for a cell in a financial statement is generated from a row definition for the row and a column definition for the column of the cell, where the row definition defines a term of the statement and the column definition specifies a period of time. The resulting statement is displayed to a user, and new formula expressions can be generated to reflect changes in the statement. The statement can have three kinds of columns, namely base columns, subtotal columns, and grand total columns. Data in columns of an input database corresponds to a database period of time, and the base columns in the statement have statement period unit. For each base column of the statement, a correspondence to more than one column of the input database can be computed dynamically. The cells of the statement column can be populated using data from the corresponding database columns.

7561747, Jul 14, 2009

Dec 23, 2005

11/316764

Francis Kapo Tse - Rochester NY, US
Ramesh Nagarajan - Pittsford NY, US
James Russell - Ontario NY, US
Chia-Hao Lee - Hacienda Heights CA, US
John W. Wu - Rancho Palos Verdes CA, US

Xerox Corporation - Norwalk CT

G06K 9/36
G06F 15/00
G06K 9/46

382232, 358 327, 358505

The image data processing system and method disclosed, processes intermediate compressed binary data representing images scanned for copy or exporting, thereby enabling storage of the copy or export file to a common memory storage device. According to an exemplary embodiment, the image data processing system comprises a binary lossless decompress module, a binary to contone restoration module, and an export processing module, the export processing module processing multiple bit image data for exporting to an image data receiving device.

7626760, Dec 1, 2009

Oct 27, 2007

11/978368

John Wu - Torrance CA, US

G02B 23/00

359426, 42119

A rifle scope has a front end receiving light and a rear end passing light to the user eye. The rifle scope has an elevation adjustment; an inside body is hollow and tubular and fitting inside a middle body which is also hollow and tubular shaped and a top angle focus adjustment mounted on the inside body in front of the elevation windage. The top angle focus adjustment has a top angle focus knob, a focus shaft mounted to the focus knob, and a top angle gear mounted to the focus shaft. The top angle focus knob and the focus shaft and the top angle gear are fixed so that they rotate together on an axis of the focus shaft. The inside body focus gear housing has an inside body focus gear meshing with the top angle gear, and the top angle gear rotation rotates the inside body focus gear.

7659753, Feb 9, 2010

Mar 30, 2007

11/731711

Lidong Chen - San Jose CA, US
John K. Wu - Santa Clara CA, US

Intel Corporation - Santa Clara CA

H03K 5/22

327 65, 327 67, 327 72

In general, in one aspect, the disclosure describes an apparatus that included a reference generator to receive a differential input signal and generate reference voltages having same common mode as the differential input signal. A replica bias generator is used to generate a bias signal based on the reference voltages. A comparator is used to compare the input signals to threshold voltages that are based at least in part on the bias signal.

7773254, Aug 10, 2010

Nov 10, 2005

11/272182

Ramesh Nagarajan - Pittsford NY, US
Francis Kapo Tse - Rochester NY, US
Chia-Hao Lee - Hacienda Heights CA, US
John Christopher Cassidy - Fairport NY, US
John W. Wu - Rancho Palos Verdes CA, US

Xerox Corporation - Norwalk CT

H04N 1/40
H04N 1/407
G06T 5/00
G06K 9/62

358 19, 358 308, 358 321, 358 323, 382229, 382254

A method and system reconstructs a contone image from a binary image by first tagging pixels to identify one of a multiplicity of image content types. The tag information and the pattern of bits surrounding the pixel to be converted to a contone value are used to reconstruct a contone image from a binary image. The pattern of bits in the neighborhood is used to generate a unique identifier. The unique identifier is used as the address for a lookup table with the contone value to be used wherein each lookup table corresponds to an image context type.

7869093, Jan 11, 2011

Nov 17, 2005

11/281267

Francis Kapo Tse - Rochester NY, US
Ramesh Nagarajan - Pittsford NY, US
John Christopher Cassidy - Fairport NY, US
Chia-Hao Lee - Hacienda Heights CA, US
John W. Wu - Rancho Palos Verdes CA, US

Xerox Corporation - Norwalk CT

G06F 15/00
G06K 15/00

358 306, 358 19, 358 21, 358462, 382176, 382205, 382261

A method and system reconstructs a contone image from a binary image by first tagging pixels to identify one of a multiplicity of image content types. The tag information and the pattern of bits surrounding the pixel to be converted to a contone value are used to reconstruct a contone image from a binary image. The pattern of bits in the neighborhood is used to generate a unique identifier. The unique identifier is used as the address for a lookup table with the contone value to be used. A filter also generates a contone value. A selector selects between the look-up table contone value and the filter contone value based an image context type.