Aron D Nacman

6359641, Mar 19, 2002

Sep 24, 1998

09/160785

Aron Nacman - Penfield NY
Isaak Rivshin - Pittsford NY

Xerox Corporation - Stamford CT

B41J 247

347235

The present invention is an apparatus for digitally controlling the output of multiple laser diodes in a system that forms a plurality of scan lines in a Raster Output Scanning (ROS) system. Output of the laser diodes is digitally controlled by a multi-channel integrated circuit to eliminate propagation delay and linearity differences commonly found between single-channel modulation control devices.

6424751, Jul 23, 2002

Sep 23, 1998

09/159533

Michael K. Carney - Fairport NY
Ramesh Nagarajan - Fairport NY
Anthony M. Frumusa - Penfield NY
William A. Cook - Pittsford NY
Aron Nacman - Penfield NY

Xerox Corporation - Stamford CT

G06K 938

382272, 382298, 358451

A system and method for reducing an image by receiving a scaling factor which defines a window. Input pixel intensities of the image are summed in real time as they are input and stored until all pixels within the window have been received. The sum is then divided by the number of pixels within the window which produces an average intensity. A pixel having the average intensity is output.

6563963, May 13, 2003

Nov 22, 2000

09/718707

Aron Nacman - Penfield NY
Ramesh Nagarajan - Fairport NY
William A. Cook - Pittsford NY

Xerox Corporation - Stamford CT

G06K 936

382298, 358451

A system and method for selective scaling of an image by selective implementation of a window averaging processing technique or an interpolation processing technique. For enlargement scaling, the interpolation processor is implemented. For reduction scaling, the window averaging processor is implemented. For anamorphic scaling, the window averaging processor may be selected and implemented for reduction processing pursuant to a two-pass processing technique wherein the interpolator processing will be implemented thereafter. Image tags are provided for selective scaling of each area of an image according to the type of content of each area by selective implementation of a window averaging processing technique or an interpolation processing technique. The interpolation processor is implemented for line drawing areas of an image, and the window averaging processor is implemented for contone areas of the image. For anamorphic scaling with image tags, a two-pass system is provided which performs a first-pass reduction in one direction followed by a second-pass enlargement in the remaining direction, wherein the reduction is performed in the manner described for reduction scaling.

6754401, Jun 22, 2004

Feb 21, 2003

10/371748

Aron Nacman - Penfield NY
Ramesh Nagarajan - Fairport NY
William A. Cook - Pittsford NY

Xerox Corporation - Stamford CT

G06K 932

382298

A system and method for selective scaling of an image by selective implementation of a window averaging processing technique or an interpolation processing technique. For enlargement scaling, the interpolation processor is implemented. For reduction scaling, the window averaging processor is implemented. For anamorphic scaling, the window averaging processor may be selected and implemented for reduction processing pursuant to a two-pass processing technique wherein the interpolator processing will be implemented thereafter. Image tags are provided for selective scaling of each area of an image according to the type of content of each area by selective implementation of a window averaging processing technique or an interpolation processing technique. The interpolation processor is implemented for line drawing areas of an image, and the window averaging processor is implemented for contone areas of the image. For anamorphic scaling with image tags, a two-pass system is provided which performs a first-pass reduction in one direction followed by a second-pass enlargement in the remaining direction, wherein the reduction is performed in the manner described for reduction scaling.

6778293, Aug 17, 2004

Dec 2, 1998

09/204395

Aron Nacman - Penfield NY

Xerox Corporation - Stamford CT

G01D 1516

358 17, 358 118, 358 15, 358 112, 382151

Multiple components of an image produced by an image output device including a raster output scanner are registered by delaying an output high addressable bit stream for a time following each raster start of scan. A multiplicity of error values are added resulting in a total error integer component and a factional component. Following the start of scan, a line sync generator delays for a number of first clock signals proportional to the integer component. After the delay, the line sync generator signals a buffer to input a video input byte. A parallel to serial shift register converts the input video byte into a high addressable bit stream. A delay register further delays the bit stream by the fractional component, which further refines where, along the raster, the bit stream will commence. Suitably, the system corrects for the errors in run time as the fast scan line is scanned.

7406210, Jul 29, 2008

Jun 28, 2004

10/878693

John C. Handley - Fairport NY, US
André Blaakman - Pittsford NY, US
Anthony Lanza - Webster NY, US
Francis Tse - Rochester NY, US
Xing Li - Webster NY, US
Aron Nacman - Henrietta NY, US
David J. Lieberman - Fairport NY, US

Xerox Corporation - Norwalk CT

G06K 9/40

382274

The present invention is a method and apparatus for processing image data to accomplish tuning or adjustment of images, so as to modify at least the darkness thereof, using compact, efficient methods and designs.

7768678, Aug 3, 2010

May 15, 2006

11/433529

Aron Nacman - Rochester NY, US
William David Notovitz - Webster NY, US
Theresa Michelle Marconi - Penfield NY, US
Brian Richard Caffee - Farmington NY, US
Anthony Paul Lanza - Webster NY, US
Timothy M. Hunter - Webster NY, US

Xerox Corporation - Norwalk CT

H04N 1/04

358488, 358474, 358539, 358 12, 35842605, 382232, 382297, 345649, 345552, 348272

An embodiment generally relates a device for rotating images. The device includes an image memory configured to store an image and a plurality of buffers. The plurality of buffers are configured to interface with the image memory to read data words of the image from the image memory and to write rotated data words to the image memory. The device also includes a logic module configured to interface with the plurality of buffers and to micro-rotate and macro-rotate an image based on a selection of three orientations. The logic module is also configured to execute a read of data words from the image memory to a first buffer of the plurality of buffers, a rotation of a data word, and a write of rotated data words from a second buffer of the plurality of buffers to the image memory substantially simultaneously.

7852531, Dec 14, 2010

Dec 12, 2007

11/954841

Aron Nacman - Rochester NY, US
John Adam Handwork - Calcleamas OR, US
Theresa M. Marconi - Penfield NY, US
Xing Li - Webster NY, US
Peter D. McCandlish - Rochester NY, US
Gregory B. Marshall - Canby OR, US

Xerox Corporation - Norwalk CT

G03F 3/08
G06F 15/00
H04N 1/36
G06K 9/00

358518, 358 19, 358409, 382167

A system and method are provided for digital correction of a plurality of color channels and color image data. In color reproduction, a color image may be composed of a plurality of superimposed color channels in a color space. In order to assure the proper alignment of color channels and exemplary applications such as color printing, one or more of the plurality of color channels which compose a complete color image may be scaled to an output resolution, and corrected in order to ensure proper alignment and authentic reproduction of a color image. In place of a plurality of independent clocks, one for each channel, a single clock is provided for every channel, and additional unit is supplied to scale each channel according to independent characteristics.