Variable-length to fixed-length data word reformatting apparatus

Details Variable-length to fixed-length data word reformatting apparatus Variable-length to fixed-length data word reformatting apparatus

1993-08-25

1995-04-04

Kostak, Victor R.

Television

Bandwidth reduction system

Data rate reduction

341 67, 348391, 375242, H04N 712

Patent

active

054041660

ABSTRACT:
Data formatting apparatus for formatting variable bit length data words into successive fixed bit length data words comprises an N-bit circular buffer comprising a plurality of concatenated buffer sections, each buffer section having the same bit length as one of the fixed bit length data words. A modulo-N counter generates a count of the cumulative length of received variable bit length data words. Each received variable bit length data word is stored in the N-bit circular buffer at a bit position dependent on the count signal, and, in response to a detection that data has been stored in all of the bits of that buffer section, the stored data from that buffer section is output as a fixed bit length data word.

REFERENCES:
patent: 4937666 (1990-06-01), Yang
patent: 5034742 (1991-07-01), Bond et al.
patent: 5245338 (1993-09-01), Sun
patent: 5255090 (1993-10-01), Israelsen
Conference: Signal Processing of HDTV, II; Proc Third Workshop on HDTV, pp. 131-137; M. Ziegler. Also INSPEC abstract B91011288 1990.
Patent Abstracts of Japan vol. 16, No. 337 (P-1390) 22 Jul. 1992 & JP-A-41 02 120 (Matsushita Electric Ind Co).
Patent Abstracts of Japan vol. 16, No. 312 (E-1230) 9 Jul. 1992 & JP-A-40 86 195 (Matsushita Electric Ind Co).

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