Television receiver including a circuit for doubling line scanni

Details Television receiver including a circuit for doubling line scanni Television receiver including a circuit for doubling line scanni

1981-12-15

1984-01-17

Orsino, Jr., Joseph A.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

H04N 502

Patent

active

044266618

ABSTRACT:
In a television receiver including a circuit for doubling line scanning frequency according to the present invention, a double scanning is performed so that a first signal or a second signal is alternately selected at every H/2 (H; normal horizontal scanning period). The first signal was converted from a video signal into a double line scanning frequency, and the second signal was converted into a double line scanning frequency from a signal produced by delaying the video signal by one field period. With such a double scanning television receiver, pictures of high quality may be obtained without flickering and degradation in resolution.

REFERENCES:
Van Buul et al.-Standards Conversion of a Videophone Signal with 313 Lines into a TV Signal with 625 Lines-Phillips Research Reports, vol. 29, #5, pp. 413-428, Oct. 1974.

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