Television – Image signal processing circuitry specific to television – Special effects
Patent
1990-05-30
1994-05-17
Chin, Tommy P.
Television
Image signal processing circuitry specific to television
Special effects
348659, 348705, H04N 5268, H04N 5272
Patent
active
053133021
ABSTRACT:
An apparatus for superimposing an image represented in a predetermined dot arrangement on a video signal. The apparatus includes an inputting device, a memory, a storage block selecting device and a signal switching circuit. The memory has an arrangement of a plurality of storage blocks, each of which includes an arrangement of a plurality of unit storage cells each for storing one bit. The inputting device inputs externally prepared binary signals. The storage block selecting device selects a predetermined storage block for every inputted bit information. All the unit storage cells in the selected storage block store the inputted bit information. The signal switching device sequentially reads the contents stored in each unit storage cell in synchronization with a video signal, switches the video signal and a predetermined superimposing video signal to each other in accordance with the contents and outputs the same. As a result, each dot represented by a plurality of dots in the reproduced video signal after being superimposed. The signal represented by the inputted binary information is reproduced on a picture frame as an expanded image.
REFERENCES:
patent: 4207596 (1980-06-01), Pires
patent: 4498098 (1985-02-01), Stell
patent: 4625231 (1986-11-01), Vlahos
patent: 4644401 (1987-02-01), Gaskins
patent: 4796089 (1989-01-01), Imai et al.
patent: 4971448 (1990-11-01), Van Zon
Nishihara Michiharu
Ohta Akio
Chin Tommy P.
Sharp Kabushiki Kaisha
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