Resumes
Resumes
Duane Siemens Phones & Addresses
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2222 N Lomita Ave, Fresno, CA 93703
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108 Bryant St, Mountain View, CA 94041 (650) 960-8559
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Redwood City, CA
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Minneapolis, MN
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Davis, CA
Work
Position:
Administrative Support Occupations, Including Clerical Occupations
Education
Degree:
Associate degree or higher
Publications
Us Patents
Method And System For Spatial-Temporal Dithering For Displays With Overlapping Pixels
View pageUS Patent:
6714206, Mar 30, 2004
Filed:
Dec 10, 2001
Appl. No.:
10/016247
Inventors:
Russel A. Martin - Menlo Park CA
Dale Adams - San Jose CA
Duane Siemens - Mountain View CA
Hugo Steemers - Mountain View CA
Dale Adams - San Jose CA
Duane Siemens - Mountain View CA
Hugo Steemers - Mountain View CA
Assignee:
Silicon Image - Sunnyvale CA
International Classification:
G09G 502
US Classification:
345589, 345596, 345605, 345597, 345600, 345690, 345694, 345695, 358518, 358519, 358520
Abstract:
A method and system for establishing intensity levels for sub-pixels of a display device with overlapping logical pixels. The dithering system combines frame rate control techniques with contributions from overlapping pixels to establish the intensity level of each sub-pixel. The dithering system initially provides an assignment of frame numbers to each sub-pixel. The dithering system then receives a logical pixel color that includes an intensity value for each component color (e. g. , red, green, and blue) for each logical pixel. The dithering system maps each component intensity value of each logical pixel to an intensity value with a low depth plus a remainder. The dithering system generates a sub-pixel intensity value for each sub-pixel of each logical pixel using frame rate control to adjust the intensity value of each sub-pixel based on the remainder and current frame number. The dithering system then calculates the intensity value for a sub-pixel by combining all the generated sub-pixel intensity values for that sub-pixel.
Method And System For Video And Auxiliary Data Transmission Over A Serial Link
View pageUS Patent:
6914637, Jul 5, 2005
Filed:
Jul 10, 2002
Appl. No.:
10/192296
Inventors:
Paul Daniel Wolf - San Carlos CA, US
John D. Banks - Cupertino CA, US
Stephen J. Keating - Sunnyvale CA, US
Duane Siemens - Mountain View CA, US
Eric Lee - San Jose CA, US
Albert M. Scalise - San Jose CA, US
Gijung Ahn - San Jose CA, US
Seung Ho Hwang - Palo Alto CA, US
Keewook Jung - Santa Clara CA, US
James D. Lyle - Santa Clara CA, US
Michael Anthony Schumacher - San Jose CA, US
Vladimir Grekhov - Los Altos CA, US
John D. Banks - Cupertino CA, US
Stephen J. Keating - Sunnyvale CA, US
Duane Siemens - Mountain View CA, US
Eric Lee - San Jose CA, US
Albert M. Scalise - San Jose CA, US
Gijung Ahn - San Jose CA, US
Seung Ho Hwang - Palo Alto CA, US
Keewook Jung - Santa Clara CA, US
James D. Lyle - Santa Clara CA, US
Michael Anthony Schumacher - San Jose CA, US
Vladimir Grekhov - Los Altos CA, US
Assignee:
Silicon Image, Inc. - Sunnyvale CA
International Classification:
H04N007/52
US Classification:
348473, 348476
Abstract:
A communication system including a transmitter, a receiver, and a serial link, in which encoded data (e. g. , video, audio, and optionally also other auxiliary data) are transmitted from the transmitter to the receiver. The serial link can but need not be a TMDS or TMDS-like link. In typical embodiments, packets of encoded audio data are transmitted over each of one or more channels of the link during data islands between bursts of encoded video data. Other aspects of the invention are transmitters for use in encoding data for transmission over a serial link, receivers for receiving such data, and methods for sending encoded data over a serial link.
Method And Apparatus For Regenerating A Clock For Auxiliary Data Transmitted Over A Serial Link With Video Data
View pageUS Patent:
7088398, Aug 8, 2006
Filed:
Jun 14, 2002
Appl. No.:
10/171860
Inventors:
Paul Daniel Wolf - San Carlos CA, US
Adrian Sfarti - Cupertino CA, US
John D. Banks - Cupertino CA, US
Stephen J. Keating - Sunnyvale CA, US
Duane Siemens - Mountain View CA, US
Eric Lee - San Jose CA, US
Albert M. Scalise - San Jose CA, US
Gijung Ahn - Sunnyvale CA, US
Seung Ho Hwang - Palo Alto CA, US
Keewook Jung - Santa Clara CA, US
Adrian Sfarti - Cupertino CA, US
John D. Banks - Cupertino CA, US
Stephen J. Keating - Sunnyvale CA, US
Duane Siemens - Mountain View CA, US
Eric Lee - San Jose CA, US
Albert M. Scalise - San Jose CA, US
Gijung Ahn - Sunnyvale CA, US
Seung Ho Hwang - Palo Alto CA, US
Keewook Jung - Santa Clara CA, US
Assignee:
Silicon Image, Inc. - Sunnyvale CA
International Classification:
H04N 7/08
H04N 7/12
H04N 7/52
H04N 7/12
H04N 7/52
US Classification:
3484231, 348473, 348478, 348465, 348515, 3484254, 37524028
Abstract:
A communication system including a transmitter, a receiver, and a serial link, in which encoded data (e. g. , video, audio, and optionally also other auxiliary data) are transmitted from the transmitter to the receiver. The serial link can but need not be a TMDS or TMDS-like link. In typical embodiments, packets of encoded audio data are transmitted over each of one or more channels of the link during data islands between bursts of encoded video data, a pixel clock is transmitted over the link, and the receiver regenerates a clock for the audio data using time code data in the packets and the pixel clock. Other aspects of the invention are transmitters for transmitting encoded data and a pixel clock over a serial link, receivers for receiving such data and pixel clock and performing audio clock regeneration, and methods for transmitting encoded data and a pixel clock over a serial link and performing clock regeneration using the transmitted data and pixel clock.
Method And Circuit For Generating Time Stamp Data From An Embedded-Clock Audio Data Stream And A Video Clock
View pageUS Patent:
7283566, Oct 16, 2007
Filed:
Feb 4, 2003
Appl. No.:
10/357750
Inventors:
Duane Siemens - Mountain View CA, US
William Sheet - Fremont CA, US
William Sheet - Fremont CA, US
Assignee:
Silicon Image, Inc. - Sunnyvale CA
International Classification:
H04H 1/04
H04J 1/00
H04J 1/00
US Classification:
370486, 370493, 370498, 3484231, 348473
Abstract:
In preferred embodiments, a system including a transmitter, a receiver, and a serial link, in which the transmitter is configured to transmit video data, embedded-clock auxiliary data (or auxiliary data derived from embedded-clock auxiliary data), and a video clock over the link to the receiver. The transmitter is configured to extract a sample clock from the auxiliary data without use of a phase-locked loop, and to generate time stamp data in response to the sample clock and the video clock. Typically, the auxiliary data are SPDIF (or other) audio data, and the sample clock changes state in response to codes that occur periodically in the audio data. Other aspects of the invention are a transmitter for use in such a system, a time stamp data generation circuit for use in such a transmitter, and a method for generating time stamp data in response to a stream of embedded-clock auxiliary data and a video clock.
Video/Graphics Text Mode Enhancement Method For Digitally Processed Data
View pageUS Patent:
7348991, Mar 25, 2008
Filed:
Apr 16, 2003
Appl. No.:
10/417712
Inventors:
Stephen J. Keating - Sunnyvale CA, US
Duane P. Siemens - Mountain View CA, US
Duane P. Siemens - Mountain View CA, US
Assignee:
Silicon Image, Inc. - Sunnyvale CA
International Classification:
G09G 5/02
US Classification:
345589, 345468, 345469, 3454691, 345470, 3454722, 345611, 345612, 382260, 382263, 382264, 382269, 382274, 382275, 382298, 382299, 382301
Abstract:
A text enhancement unit is introduced in order to alleviate the degradation of text characters on computer or television displays. The text enhancement unit uses an enhancement process to regain uniformity and intensity that may be lost during image processing. The text enhancer unit may be placed between an image processing unit such as a scaler, de-interlacer, or DSP, and a computer or television display to improve the quality of text characters that may have become degraded by image processing performed by the image processing unit. In one embodiment, the text enhancer unit improves contrast by multiplying pixel intensity by an intensity multiplier. In a second embodiment, the text enhancer unit improves contrast using a threshold operation which outputs either a very high or very low intensity pixel. In an third embodiment, the text enhancer unit improves contrast using a threshold operation which outputs either a very low intensity pixel or a pixel multiplied by an intensity multiplier. In a fourth embodiment, the text enhancer unit improves contrast using a threshold operation which outputs either an unchanged pixel or a pixel multiplied by an intensity multiplier.
Array With Redundant Integrated Self-Testing Scan Drivers
View pageUS Patent:
56549709, Aug 5, 1997
Filed:
Dec 22, 1995
Appl. No.:
8/575784
Inventors:
Victor M. DaCosta - Santa Cruz CA
Duane Siemens - Redwood City CA
Duane Siemens - Redwood City CA
Assignee:
Xerox Corporation - Stamford CT
International Classification:
G01R 3128
US Classification:
371 2231
Abstract:
An array includes redundant integrated scan drivers that can provide signals to each other through scan lines. Each scan driver can be a shift register, each stage of which includes a tri-state inverter to provide its output to one of the scan lines. To transfer signals from one shift register to the other, one shift register provides signals while the outputs of the other shift register are in a floating state. The other shift register receives the signals and can then shift them to its output. The signals can be test signals used to detect defects in the shift registers and in the array. Also, each stage in each shift register is connected to receive signals from the scan line that is driven by the preceding stage. Therefore, if the preceding stage is removed due to a defect, the following stage can receive signals through the scan line from the other shift register and continue to function even though its preceding stage is removed.