Television – Image signal processing circuitry specific to television – Switching
Patent
1995-02-21
1996-10-22
Metjahic, Safet
Television
Image signal processing circuitry specific to television
Switching
348708, 348584, H04N 5262, H04N 5265, H04N 5268
Patent
active
055682049
ABSTRACT:
A digital video switching apparatus is disclosed in which a 4:2:2 digital video signal and a 4:4:4 digital video signal supplied at input terminals are selected by switching by a matrix switcher unit in order to transmit the 4:2:2 digital video signal to a first signal processing unit and in order to transmit the 4:2:2 digital video signal to a second signal processing unit. The first signal processing unit converts the 4:4:4 digital video signal into the 4:2:2 digital video signal by signal processing, such as color correction. The second signal processing unit performs signal processing, such as mixing or wiping, on the 4:2:2 digital video signal and the 4:2:2 digital video signal directly supplied from the matrix switcher unit, in order to output the processed 4:2:2 digital video signal. The input terminals may be simultaneously employed as the input terminals for the 4:2:2 digital video signal and the input terminals for the 4:4:4 digital video signal, while there is no necessity of providing input terminals dedicated to the 4:4:4 digital video signal. On the other hand, a device for supplying the 4:2:2 digital video signal or a device for supplying the 4:4:4 digital video signal may be connected to the input terminals so that the 4:2:2 digital video signal and the 4:4:4 digital video signal will be arbitrarily switched and selected by the matrix switcher unit or otherwise employed in combination.
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patent: 5426467 (1995-06-01), Moriwake et al.
Frommer William S.
Metjahic Safet
Sinderbrand Alvin
Sony Corporation
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