Title :
DCT-based still image compression ICs with bit-rate control
Author :
Nakagawa, Masaki ; Sasaki, Minoru ; Ishizawa, Yoshiyuki ; Miyano, Yuichi ; Yamazaki, Mituo ; Konishi, Kazuo ; Kaneshige, Toshihiko ; Hisatom, Shuichi
fDate :
8/1/1992 12:00:00 AM
Abstract :
The authors discuss compression and coding ICs for still images based on the DCT (discrete cosine transform) using a new algorithm for bit-rate control. The compression and coding method used in these ICs conforms to the JPEG (Joint Photographic Expert Group) standard. These ICs have been developed for a digital still camera system using memory cards as the recording medium, and they have a bit-rate control function to guarantee the number of images recorded on a card. The functional specifications and composition of these ICs, as well as the structure of the encoder IC, and details of the algorithm used for bit-rate control are considered
Keywords :
data compression; digital signal processing chips; discrete cosine transforms; image coding; DCT-based still image compression; JPEG standard; Joint Photographic Expert Group; bit-rate control; compression IC; digital still camera; discrete cosine transform; encoder IC; memory cards; Control systems; Digital cameras; Digital recording; Discrete cosine transforms; Image coding; Image quality; Microcomputers; Size control; Standardization; Transform coding;
Journal_Title :
Consumer Electronics, IEEE Transactions on
