Picture coding apparatus including a coding controller for selec

Details Picture coding apparatus including a coding controller for selec Picture coding apparatus including a coding controller for selec

1990-10-30

1993-04-13

Brinich, Stephen

Facsimile and static presentation processing

Facsimile

Reduced time or bandwidth for static image communication

358430, H04N 712

Patent

active

052027708

ABSTRACT:
A coding controller takes a buffer occupancy at present from a transmission buffer, and a first normalized value evaluating device outputs a first normalized value, independent of a video rate. A frame rate for the number of bits per block (n.times.QB) is determined and a second normalized value evaluating device outputs a second normalized value for the number of bits per one frame. When the number of bits is relatively small, a second quantization characteristics control table is selected in a selector and the coding control is performed every frame. When the number of bits is large, a first quantization characteristics control table is selected in the selector and the control is performed every block (n.times.QB), instead of the control every frame. The quantization characteristics control signal is then outputted.

REFERENCES:
patent: 4386366 (1983-05-01), Mori
patent: 4581656 (1986-04-01), Wada
patent: 4677479 (1987-06-01), Hatori et al.
patent: 4746978 (1988-05-01), Shimura
patent: 4785356 (1988-11-01), Gonzales et al.
"Motion Video Coding in CCITT SG XV-The Video Source Coding" Ronald Plompen, Yoshinori, Wilfried Geuen, Jacques Guichard, Mario Guglielmo, Harald Brusewitz pp. 997-1004.
"Scene Adaptive Coder"-Wen-Hsiung Chen and William K. Pratt IEEE Transactions on Communications, vol. Com. 32, No. 3, Mar. 1984-pp. 225-231.
Article Entitled "Interframe Coding Using Adaptive Vector Quantizer" to Murakami et al (Translation Included) dated Mar. 4, 1984.

Affiliated with

Also associated with

Rating

Picture coding apparatus including a coding controller for selec does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Picture coding apparatus including a coding controller for selec, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Picture coding apparatus including a coding controller for selec will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1159226