Video signal transmitting system

Details Video signal transmitting system Video signal transmitting system

1991-02-15

1992-09-22

Peng, John K.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358141, 358105, 358 12, H04N 712, H04N 704

Patent

active

051502070

ABSTRACT:
An image signal transmitting system which comprises a first field offset sub-sampling circuit for processing a first image signal as a still image, the first image signal being in a relatively lower region of temporal motion frequency in a motion frequency band, a frame/line offset sub-sampling circuit for processing the first image signal, a line offset sub-sampling circuit for processing a second image signal as a moving image, the second image signal being in a relatively higher region of temporal motion frequency in the motion frequency band, a second field offset sub-sampling circuit for processing a third image signal, the third image signal being a middle region of temporal motion frequency in the motion frequency band between the lower temporal frequency region and the higher temporal frequency region, whereby the third image signal is sub-sampled only by the second field offset sub-sampling circuit, and each of the sub-sampling circuits has the same sampling points for the first, second and third image signals.

REFERENCES:
patent: 4873573 (1989-10-01), Thomas et al.
patent: 4924308 (1990-05-01), Feuchtwanger
patent: 4965667 (1990-10-01), Trew et al.
patent: 4984077 (1991-01-01), Uchida
patent: 4985767 (1991-01-01), Haghiri et al.
patent: 5031039 (1991-07-01), Haghiri et al.

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