Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1987-11-03
1988-11-15
Britton, Howard W.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358 12, 358138, H04N 712, H04N 713
Patent
active
047853484
ABSTRACT:
A system for the transmission of high-definition television pictures in narrow-band channels, and a transmitter and a receiver appropriate to the system. The system includes a transmitting section (10) and a receiving section (20). To transmit the picture via a narrow-band channel (30), the picture produced by a camera (35) is subsampled by a circuit (40). One filter out of a plurality of anti-aliasing filters (F1, F2, . . . , Fn) is selected by means of a movement detector (48); the information of this detector is also transmitted to the receiving section (20) to select, in agreement therewith, one filter output of a plurality of filters (I1, I2, . . . , In) to be used for the oversampling operation.
REFERENCES:
patent: 4417269 (1983-11-01), Dischert
patent: 4716453 (1987-12-01), Pawelski
Fonsalas Frederic
Hayet Pascal
Le Queau Marcel
Lejard Jean-Yves
Briody Thomas A.
Britton Howard W.
Gadson Gregory P.
U.S. Philips Corp.
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