DPCM system with rate-of-fill control of buffer occupancy

Details DPCM system with rate-of-fill control of buffer occupancy DPCM system with rate-of-fill control of buffer occupancy

1986-11-07

1987-11-10

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

358133, 382 56, H04N 713

Patent

active

047062606

ABSTRACT:
In a differential pulse code modulator for image-representative signals, a coder codes difference signals to produce coded signals which have a highly variable rate, which depends upon motion in the image being represented. A rate buffer receives the coded signals and generates a control signal representative, at least in part, of the rate of fill of the rate buffer. Various filters, decimators and/or coarse quantizers associated with the modulator have characteristics controlled by the control signal in order to tend to control the rate of fill of the rate buffer. This aids in preventing loss of information at the receiver.

REFERENCES:
patent: 3670096 (1972-06-01), Candy et al.
patent: 4047221 (1977-06-01), Yasuda et al.
patent: 4051530 (1977-09-01), Kuroda et al.
patent: 4077053 (1978-02-01), Ishiguro
patent: 4093962 (1978-06-01), Ishiguro et al.
patent: 4202011 (1980-05-01), Koga
patent: 4217609 (1980-08-01), Hatori et al.
patent: 4302775 (1981-11-01), Widergren et al.
patent: 4454546 (1984-06-01), Mori
patent: 4460923 (1984-07-01), Hirano et al.
patent: 4488175 (1984-12-01), Netravali
patent: 4517596 (1985-05-01), Suzuki
patent: 4541012 (1985-09-01), Tescher
patent: 4562468 (1985-12-01), Koga
The article "Picture Coding: A Review" by Netravali et al., published at pp. 366-406 of the Proceedings of the IEEE, vol. 68, No. 3, Mar. 1980.

Affiliated with

Also associated with

Rating

DPCM system with rate-of-fill control of buffer occupancy does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with DPCM system with rate-of-fill control of buffer occupancy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and DPCM system with rate-of-fill control of buffer occupancy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1072926