Television receiver

Details Television receiver Television receiver

1979-06-18

1981-11-03

Murray, Richard

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

H04N 522

Patent

active

042988918

ABSTRACT:
A television receiver including: television signal receiving means for simultaneously receiving two different television signals to produce two different image signals, a first and a second image signal corresponding to the television signals; synchronous signal producing means for producing vertical synchronous signals and horizontal synchronous signals from the two image signals; memory means for sampling and storing the second image signal; driving pulse producing means for producing driving pulses to drive the memory means in accordance with the synchronous signals supplied to the driving pulse producing means from the synchronous signal producing means; mixing means for producing a mixed image signal by inserting, into the first image signal under the control of the driving pulses, the second image signal read out from the memory means by the driving pulses; and display means for displaying the output of the mixing means; wherein the second image signal of each horizontal synchronous period is sampled by the memory means into N.sub.H sampled signals, and n sampled signals which are sampled from n adjacent horizontal lines of the second image signal, respectively, and which correspond to each other in vertical direction on a TV screen are summed and integrated into one sampled image signal element whereby N.sub.H sampled image signal elements for one horizontal synchronous period upon read-out are formed from n.times.N.sub.H sampled signals of n adjacent horizontal lines and stored by the memory means.
Since the information of all of the n adjacent horizontal lines is utilized for the displayed image, the displayed image can be of high quality.

REFERENCES:
patent: 4070695 (1978-01-01), Scholz et al.
patent: 4139860 (1979-02-01), Micic et al.

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