Compressed quantized image-data transmission technique suitable

Details Compressed quantized image-data transmission technique suitable Compressed quantized image-data transmission technique suitable

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.

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