Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1991-12-10
1993-10-12
Powell, Mark R.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358160, H04N 546, H04N 701
Patent
active
052530604
ABSTRACT:
A domestic video system includes a number of interconnected video apparatuses (10,12,14), at least one of the apparatuses including a facility for conversion of the aspect ratio of video signals. The system further includes control signalling (20) operating via a standard serial bus (16) for systematically interrogating each apparatus in a signal path to determine whether aspect ratio conversion is necessary in the signal path and for selectively enabling or disabling any conversion facility in the signal path to effect such necessary conversion. The control means implements a strategy for eliminating unnecessary conversion of aspect ratio in the signal path, and also chooses to effect conversion as late as possible in the signal path when faced with more than one available conversion facility.
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Van Steenbrugge Bernard
Welmer Harm J.
D2B Systems Company Limited
Marion Michael E.
Powell Mark R.
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