Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1990-01-30
1993-09-14
Chin, Tommy P.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 19, H04N 987, H04N 988
Patent
active
052454142
ABSTRACT:
Video signals are supplied as component signals (in which the color signals are not correlated with a color carrier wave) and are stored in a frame memory and read out therefrom in synchronism with supplied reference signals. A FIFO memory is interposed ahead of the frame memory for delaying the video signals in such a way that they can be brought into synchronism with the horizontal phase of the reference signals. The system can be made to operate in a frame mode in which the field sequence and the timing of the synchronizing pulses always agree with those of the reference signal, in a field mode in which only horizontal sychronization is provided and the field sequence can be modified, a line mode in which the input signal is merely delayed into synchronism with the horizontal phase of the reference signal, and a delay mode in which a substitute reference signal is derived from the input signal itself, so that the memory is used merely for delay.
REFERENCES:
patent: 4768102 (1988-08-01), O'Gwynn
patent: 4989073 (1991-01-01), Wagner
BTS Broadcast Television Systems GmbH
Chin Tommy P.
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