Portable computer camera with a color image play-back LCD

Yusheng Tim Tsai; Wen-Hsin Chan

doi:10.1117/12.204836

14 March 1995 Portable computer camera with a color image play-back LCD

Yusheng Tim Tsai, Wen-Hsin Chan

Proceedings Volume 2416, Cameras and Systems for Electronic Photography and Scientific Imaging; (1995) https://doi.org/10.1117/12.204836
Event: IS&T/SPIE's Symposium on Electronic Imaging: Science and Technology, 1995, San Jose, CA, United States

Abstract

A prototype of portable digital still camera (DSC) used as a computer input device, and a consumer product as well, is developed in the laboratory. The system performs auto focus, auto exposure, and auto white balance, associated with a zoom lens and its controller. The auto exposure algorithm used fuzzy logic and picture segments for exposure decision. A DSP ASIC has been developed for color image processing. The images are compressed with a JPEG IC, and are stored in a PCMCIA memory card. At compression ratio 18 to 1, a 2 Mbyte memory card can store about 36 color images. An energy saving strategy is implemented in a power control module, and results in two hours operation time or 200 pictures by using a normal camcorder battery. A color LCD panel is used for real time display and playback. The SCSI interface driver has been designed to provide PC connection. The system also has NTSC and S-video connection terminals for real time video display.

Citation Download Citation

Yusheng Tim Tsai and Wen-Hsin Chan "Portable computer camera with a color image play-back LCD", Proc. SPIE 2416, Cameras and Systems for Electronic Photography and Scientific Imaging, (14 March 1995); https://doi.org/10.1117/12.204836

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available