Padma Parthasarathy, 485226 Rancho Del Norte Dr, Fremont, CA 94555

6950463, Sep 27, 2005

Jun 13, 2001

09/880243

Shankar Moni - San Jose CA, US
Andrew W. Walters - San Jose CA, US
John A. Tardif - San Jose CA, US
Padma Parthasarathy - Fremont CA, US

Microsoft Corporation - Redmond WA

H04N007/12

37524003, 382251, 341 51

Systems and methods for transcoding a transport stream or a video stream. A video stream includes a quantization matrix and a quantization scale that define how DCT frequency coefficients are quantized. A transport stream is transcoded by updating the quantization matrix and/or the quantization scale such that a new set of DCT frequency coefficients may be generated. Typically the quantization scale and/or the quantization matrix are updated such that the DCT frequency coefficients are more coarsely quantized such that their encoding consumes fewer bits. The quantization matrix can be updated such that select frequency coefficients are affected. Transcoding can operate at any level of the video stream, such as the frame level, the slice level, or the macroblock level. The bit rate of the video stream can therefore be adjusted or altered according to a current quantization level and a current bit rate.

7636392, Dec 22, 2009

Oct 19, 2004

10/968252

Shankar Moni - San Jose CA, US
Andrew W. Walters - San Jose CA, US
John A. Tardif - San Jose CA, US
Padma Parthasarathy - Fremont CA, US

Microsoft Corporation - Redmond WA

H04N 7/12
G06K 9/36

37524003, 382239

Systems and methods for transcoding a transport stream or a video stream. A video stream includes a quantization matrix and a quantization scale that define how DCT frequency coefficients are quantized. A transport stream is transcoded by updating the quantization matrix and/or the quantization scale such that a new set of DCT frequency coefficients may be generated. Typically the quantization scale and/or the quantization matrix are updated such that the DCT frequency coefficients are more coarsely quantized such that their encoding consumes fewer bits. The quantization matrix can be updated such that select frequency coefficients are affected. Transcoding can operate at any level of the video stream, such as the frame level, the slice level, or the macroblock level. The bit rate of the video stream can therefore be adjusted or altered according to a current quantization level and a current bit rate.

2013017, Jul 11, 2013

Jan 5, 2012

13/344473

Jason Oberg - San Diego CA, US
Ken Eguro - Seattle WA, US
Victor Tirva - Mountain View CA, US
Padma Parthasarathy - Fremont CA, US
Susan Carrie - Mountain View CA, US
Alessandro Forin - Bellevue WA, US
Jonathan Chow - Santa Clara CA, US

G06F 17/00

706 45

A computing device for use in decision tree computation is provided. The computing device may include a software program executed by a processor using portions of memory of the computing device, the software program being configured to receive user input from a user input device associated with the computing device, and in response, to perform a decision tree task. The computing device may further include a decision tree computation device implemented in hardware as a logic circuit distinct from the processor, and which is linked to the processor by a communications interface. The decision tree computation device may be configured to receive an instruction to perform a decision tree computation associated with the decision tree task from the software program, process the instruction, and return a result to the software program via the communication interface.

6094201, Jul 25, 2000

Apr 8, 1998

9/057393

Adam Malamy - Foster City CA
Nicholas R. Baker - Cupertino CA
Robert Laker - Fremont CA
Padma Parthasarathy - Fremont CA
Adrian Sfarti - Sunnyvale CA

WebTV Networks, Inc. - Mountain View CA

G06T 1120

345441

A system and method of rendering polygons in graphics system using incremental iterative addition in place of complex division operations. A setup engine provides relevant values to edge and span walk modules for rapid processing and rendering of polygon characteristics including material values. Characteristic functions are iterated with respect to polygon area and along individual spans to derive values for each pixel therein.

6219070, Apr 17, 2001

Sep 30, 1998

9/164003

Nick Baker - Cupertino CA
Adam Malamy - Foster City CA
Adrian Sfarti - Sunnyvale CA
Paul Paternoster - Los Altos CA
Padma Parthasarathy - Fremont CA

WebTV Networks, Inc. - Mountain View CA

G06T 1570

345475

A method and system for simulating motion of a polygon on a display screen. The polygon may be included in a set of polygons used to model a three-dimensional object. The position of the polygon is defined by vertices tracked in a subpixel coordinate system existing in a computer-readable medium. The subpixel coordinates of the vertices are used to identify the pixels on the display screen having coordinates that correspond to subpixel coordinates lying within or, optionally, at the boundary of the polygon. The identified pixels are those that are to be lighted on the display screen to generate the image of the polygon. The display properties of the lighted pixels are selected by interpolation based on defined pixel display parameters assigned to the vertices of the triangle. As motion of the polygon is tracked in the subpixel coordinate system, the corresponding display on the display screen is repeatedly adjusted. The method of identifying and interpolating the display parameters of the pixels using the subpixel coordinate system provides the appearance of smooth polygon motion.