Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1984-05-01
1986-11-25
Shepperd, John W.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 12, 358 13, H04N 1120, H04N 1106
Patent
active
046252304
ABSTRACT:
In a television transmission system, an encoding circuit in a data generator transmits (or stores) identification information relating to variable numbers of television lines or variable portions of television lines in which luminance and chrominance information occur, compressed where appropriate. The data receiver includes a simple, properly adaptable decoding circuit which comprises presettable counters for counting portions of television lines and for counting television lines, outputs of these counters being coupled to address inputs of a programmable memory which is coupled to a multiplexer which is switchable by the identification information and is followed by a logic circuit for generating control signals for a chrominance memory having the same write and read rates and for luminance and chrominance memories having said write rates and several read rates, under the control of a clock pulse source which is switchable via the logic circuit and the identification information. In the data generator the encoding circuit may be of a similar construction combined with luminance and chrominance memories having different write rates and the read rate mentioned in the foregoing.
REFERENCES:
patent: 4335393 (1982-06-01), Pearson
T. S. Robson, "Extended-Definition Television Service", IEE Proc., vol. 129, Pt. A, No. 7, Sep., 1982, pp. 485-492.
De Haan Gerard
Tan Sing L.
Van De Polder Leendert J.
Vreeswijk Franciscus W. P.
Briody Thomas A.
Dunnam Michael P.
Goodman Edward W.
Shepperd John W.
Streeter William J.
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