Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1990-04-09
1992-02-25
Peng, John K.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358136, 358105, 382 56, H04N 712, H04N 718
Patent
active
050917820
ABSTRACT:
The compression of successive blocks of digital data is optimized by selecting between different compression algorithms or different data formats on a block-by-block basis. In one application, digitized interlaced video signals are processed for transmission in a compressed form. A set of pixel data presented in a field format is compressed to provide a first compressed video signal. The set of pixel data is also presented in a frame format and compressed to provide a second compressed video signal. Errors are evaluated in the first and second compressed video signals. The compressed video signal having the least error is selected for further processing. The technique is repeated for successive sets of pixel data and the selected signals are encoded to identify them as field formatted or frame formatted signals. The encoded selected signals are then combined to provide a compressed video signal data stream for transmission. Apparatus for receiving and decoding the signals is also disclosed.
REFERENCES:
patent: 3439753 (1969-04-01), Mounts et al.
patent: 4546386 (1985-10-01), Matsumoto et al.
patent: 4651206 (1987-03-01), Ohki
patent: 4707738 (1987-11-01), Ferre et al.
patent: 4802006 (1989-01-01), Iinuma et al.
patent: 4816906 (1989-03-01), Kummerfeldt et al.
patent: 4827340 (1989-05-01), Pirsch
patent: 4837618 (1989-06-01), Hatori et al.
patent: 4862264 (1989-08-01), Wells et al.
patent: 4887156 (1989-12-01), Ohki
patent: 4897720 (1990-01-01), Wu et al.
patent: 4933759 (1990-06-01), Van der Meer et al.
patent: 4962465 (1990-07-01), Ohta
patent: 4984076 (1991-01-01), Watanabe et al.
"Scene Adaptive Coder", Chen and Pratt, IEEE Transactions on Communications, vol. COM-32, No. 3, Mar. 1984.
"Fixed and Adaptive Predictors for Hybrid Predictive/Transform Coding", Ericsson, IEEE Transactions on Communications, vol. COM-33, No. 12, Dec. 1985.
"A Motion-Compensated Interframe Coding Scheme for Television Pictures", Ninomiya and Ohtsuka, IEEE Transactions on Communications, vol. COM-30, No. 1, Jan. 1982.
Krause Edward A.
Paik Woo H.
General Instrument Corporation
Lipsitz Barry R.
Peng John K.
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