Method and apparatus for sampling and reproducing television inf

Details Method and apparatus for sampling and reproducing television inf Method and apparatus for sampling and reproducing television inf

1974-11-25

1978-01-10

Safourek, Benedict V.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358136, 358138, 358141, H04N 712

Patent

active

040682650

ABSTRACT:
The effective resolution of a TV presentation reproduced from digitally encoded samples is improved by shifting the sampling points back and forth at a relatively rapid rate. Alternate lines of the original television raster are sampled at shifted points, wherein the shift is less than the sampling interval and suitably one half the sampling interval. Since a TV raster includes an odd number of horizontal lines, a particular line location on the reproduced raster will be formed of samples which shift back and forth at one half the TV frame rate, i.e. 15 cycles per second.

REFERENCES:
patent: 2921124 (1960-01-01), Graham
patent: 3848083 (1974-11-01), Townsend

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