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Proceedings Paper

Portable computer camera with a color image play-back LCD
Author(s): Yusheng Tim Tsai; Wen-Hsin Chan
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Paper 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.

Paper Details

Date Published: 14 March 1995
PDF: 6 pages
Proc. SPIE 2416, Cameras and Systems for Electronic Photography and Scientific Imaging, (14 March 1995); doi: 10.1117/12.204836
Show Author Affiliations
Yusheng Tim Tsai, Industrial Technology Research Institute (Taiwan)
Wen-Hsin Chan, Industrial Technology Research Institute (Taiwan)


Published in SPIE Proceedings Vol. 2416:
Cameras and Systems for Electronic Photography and Scientific Imaging
Constantine N. Anagnostopoulos; Michael P. Lesser, Editor(s)

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