Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1989-12-26
1991-01-15
Peng, John K.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358183, 382 48, H04N 974, H04N 5262
Patent
active
049857550
ABSTRACT:
A memory stores area specifying data for controlling a switch in the path of a signal of a first image in order to replace a portion of a first video signal with another signal (second video signal or the like). The control data of the memory can be obtained by converting a video signal, derived by use of a video camera, into a binary signal by a binary-coding circuit. In this case, a subject photographed by the video camera is a sheet of white rectangular paper on which an area edged or surrounded by a boarder line is specified, for example. In order to create the above area specifying data by photographing the subject on which the edged or surrounded area is specified, an edge counter, an odd/even number detection circuit, a flip-flop circuit, an AND circuit and a delay circuit are provided. That is, when an edge signal is supplied, the edge counter counts the edge signal and the odd/even number detection circuit and determines whether the counted value is odd or even. Then, the flip-flop circuit can produce a signal corresponding to the area specified by the subject between the odd numbered edge signal to the even numbered edge signal. As a result, the above area specifying data can be obtained from the AND circuit.
REFERENCES:
patent: 3936868 (1976-02-01), Thorpe
patent: 4028727 (1977-06-01), Skrydstrup
patent: 4110786 (1978-08-01), Mignot et al.
patent: 4217604 (1980-08-01), Wozniak
patent: 4673983 (1987-06-01), Sarugaku et al.
Oosawa Shin-ichi
Shimoda Kenji
Kabushiki Kaisha Toshiba
Peng John K.
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