Seminar Archive - 2004
December 16, 2004, 6:00 - 7:00 p.m.
Speaker: Matthew Bone, Aurora Systems
Title: Building Blocks for Success of LCOS
Abstract: The concept of liquid crystal on silicon has been around for many years. However, the emergence of this technology into the consumer market has taken much longer than any of the early pioneers predicted. The integration of LCOS into commercial products has required the close co-operation of technologists in a broad range of disciplines. In this presentation an overview of the essential building blocks for success in this field will be presented. The presentation will start with a summary of critical requirements for products. We will then cover specific technical issues related to the integration of technologies into competitive products. Areas for discussion will include silicon architecture, LC design, device reliability, retardation compensation, polarizing optics, metrology and product design.
Speaker Background: Matthew Bone, a Senior Director of Optical Systems in Aurora Systems, received a BSc Honors Degree in Chemistry from University Wales, UK. Over 20 years experience in the field of Liquid Crystals, Flat Panel Displays, Projection Optics, Non-Imaging Optics and Display Systems Engineering. Published over 18 technical papers covering Optical System Design, Illumination, Electro optics, Liquid Crystal Materials, Electrical Addressing and Materials Physics.
Location:
Apple Computer, Inc.
Hong Kong conference room
R&D Building 1, 1st floor
One Infinite Loop Cupertino, CA 95014
How to get to Apple's R&D campus: From Interstate 280, take De Anza Blvd south to Mariani Avenue (the first stoplight). Turn left onto Mariani Ave and then turn left again onto Infinite Loop. Free parking will be on your left (park in either of the large lots). R&D Building 1 is the building directly across from the parking lot.
Post-Seminar Dinner: The seminar is free. Please join our speaker for dinner ($10-20) afterwards. Directions to the restaurant will be given at the seminar.
September 21, 2004, 6:00 - 7:00 p.m.
Speaker: Scott Daly, Research Fellow, Sharp Laboratories of America, Camas, WA
Title: Bit-Depth-Extension: Overcoming LCD-Driver Limitations by Using Models of the Equivalent Input Noise of the Visual System
Abstract: Continuous tone, or "contone", imagery usually has 24 bits/pixel as a minimum, with eight bits each for the three primaries in typical displays. However, lower-cost displays constrain this number because of various system limitations. Conversely, higher quality displays seek to achieve 9-10 bits/pixel/color, though there may be system bottlenecks limited at 8. The two main artifacts from reduced bit-depth are contouring and loss of amplitude detail; these can be prevented by dithering the image prior to these bit-depth losses. Our technique builds on Roberts' noise modulation idea and the subsequently influenced work in halftoning for hardcopy and dithering for displays. However, most halftoning/dithering work was primarily directed to displays at the lower end of bits/pixel (e.g., 1 bit as in halftoning) and higher ppi. We approach the problem from the higher end of bits/pixel/color, say 6 to 8, and lower spatial resolution (<100 ppi), which changes the game substantially from halftoning experience.
Instead of spatial dither, it is better to use an amplitude dither. In addition, dynamic displays allow for the use of a temporal dithering component. This paper will report on techniques and observations made in achieving contone quality on ~100 or less ppi LCD displays starting with from 4 to 8 bits driver limits, and resulting with no visible dither patterns, noise, contours, or loss of amplitude detail at viewing distances as close as the near focus limit (~ 120 mm).
Speaker Background: Scott Daly has degrees in electrical engineering and bioengineering from North Carolina State University and University of Utah, respectively. The bioengineering thesis was in retinal neurophysiology, specifically the temporal information processing of cone photoreceptors. He has worked for RCA in the 70's doing proto-digital video, for Photo Electronic Corporation in West Palm Beach in the early 80's with early high-resolution laser scanning systems and WYSIWYG simulators, and for Eastman Kodak in the 80's and 90's in the arenas of image compression, image fidelity models, and data image embedding. He shares a technical Emmy with several Kodak co-workers for a video transceiver used in the Tianamen Square news coverage of 1989. He has also taught courses on Applied Perception at Siggraph in 2000 and 2001 in New Orleans and Los Angeles. Currently a research fellow and leader of the Center for Displayed Appearance at Sharp Laboratories of America, he is now applying visual models towards improving digital video and displays. He has 20 patents ranging from tonescale to steganography and is currently a member of IEEE, SPIE, and SID.
Location:
Apple Computer, Inc.
Singapore at Gate One
1 Infinite Loop
Cupertino California 95014
How to get to Apple's Singapore Conference Room. From Interstate 280, take De Anza Blvd. south to Mariani Avenue (the first stoplight).
Post-Seminar Dinner: The seminar is free. Please join our speaker for dinner ($10-20) afterwards. Directions to the restaurant will be given at the seminar.
March 16 2004, 5:30 - 7:00 p.m.
Speaker: Russel A. Martin, Ph.D., Director of Research, Foveon, Inc.
Title: Image Sensor Technology
Abstract: Even when separated by many years, there are often striking parallels between the image sensor and display technologies as they develop. This talk will explore two of those similarities. The first is the parallel between the development of photographic film and digital imagers. The second is between that of the active matrices used in imagers and those used in displays. These parallels include Foveon's X3 technology, which allows three color signals to be acquired simultaneously at a single location on an imager. This Direct Image Sensor technology has the highest area efficiency and is applicable to a wide variety of camera systems.
Instead of spatial dither, it is better to use an amplitude dither. In addition, dynamic displays allow for the use of a temporal dithering component. This paper will report on techniques and observations made in achieving contone quality on ~100 or less ppi LCD displays starting with from 4 to 8 bits driver limits, and resulting with no visible dither patterns, noise, contours, or loss of amplitude detail at viewing distances as close as the near focus limit (~ 120 mm).
Speaker Background: As the Director of Research at Foveon, Inc, Russel Martin is responsible for process technology, image processing, imager characterization and patents. Dr. Martin has been involved in semiconductor and imaging technology for twenty-two years. He has worked on the development of electronics for electrostatic plotters for Versatec, AMLCDs for Xerox PARC and dpiX, and display electronics for Silicon Image and Gyricon Media. Dr. Martin spent a sabbatical at NASA Ames where he developed computational models of human visual perception of displays. He has been active in organizing conferences with the IEEE, the SID and the SPIE. He has a Ph.D. and M.S. in Experimental Condensed Matter Physics from UC Davis and an A.B. in Physics from UC Berkeley.
Location:
Apple Computer, Inc.
Singapore at Gate One
1 Infinite Loop
Cupertino California 95014
How to get to Apple's Singapore Conference Room. From Interstate 280, take De Anza Blvd. south to Mariani Avenue (the first stoplight).
Post-Seminar Dinner: The seminar is free. Please join our speaker for dinner ($10-20) afterwards. Directions to the restaurant will be given at the seminar.
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