Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1986-06-20
1987-05-05
Britton, Howard W.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358 13, 358133, H04N 713
Patent
active
046636609
ABSTRACT:
A technique for transmitting compressed quantized image-data from a transmitter to a receiver over a limited bandwidth communication channel employs temporal differential pulse code modulation incorporating pyramid image processing spectrum analyzers and synthesizers. This technique permits the selective elimination by data-compression of only those portions of the original image information which contribute least to the perception of image quality by a viewer of a synthesized display image at the receiver.
REFERENCES:
patent: 4200886 (1980-04-01), Musmann et al.
patent: 4447886 (1984-05-01), Meeker
patent: 4603350 (1986-07-01), Arbeiter
Co-pending patent application Ser. No. 596,817, Carlson et al., filed Apr. 4, 1984, assigned to RCA Corporation, Princeton, NJ.
Co-pending currently-allowed patent application Ser. No. 685,239, Arbeiter et al., filed Dec. 21, 1984, assigned to RCA Corporation, Princeton, NJ.
Co-pending patent application Ser. No. 774,984, Anderson, filed Sep. 11, 1985, assigned to RCA Corporation, Princeton, NJ.
Acampora Alfonse
Burt Peter J.
Fedele Nicola J.
Hingorani Rajesh
Britton Howard W.
RCA Corporation
Seligsohn George J.
Tripoli Joseph S.
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