High definition television receiver enabling picture-in picture

Details High definition television receiver enabling picture-in picture High definition television receiver enabling picture-in picture

1989-02-16

1991-01-01

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 22, H04N 5273

Patent

active

049822888

ABSTRACT:
A television signal receiving apparatus of the type in which when performing a picture in picture operation by receiving a plurality of picture signals compressed in band width by multiple sub-Nyquist sampling, a sub-channel signal is first subjected to a spatial interpolating process and combined with a main-channel signal. The still picture portion and moving picture portion of a first input signal are restored to a field offset sub-sampled first picture signal, and a second input signal is restored to a field offset sub-sampled picture signal, subjected to a size-reducing process by time base compression in the vertical and horizontal directions of the picture and delivered as a second picture signal of the form synchronized in phase with a given position of the first picture signal. The first and second picture signals are time-division multiplexed to deliver a third picture signal onto a picture screen.

REFERENCES:
patent: 4853765 (1989-08-01), Katsumata et al.
"HD-TV Broadcasting System Using Single Channel Satellite (MUSE)".

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