Superimposing apparatus

Details Superimposing apparatus Superimposing apparatus

1985-12-17

1987-06-23

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 22, 358146, 340721, H04N 5272, H04N 974

Patent

active

046757376

ABSTRACT:
A superimposing apparatus comprises an obtaining circuit for obtaining a first positional information from a video signal including the first positional information, a comparing circuit for comparing a second positional information read out from a storage medium with the first positional information obtained in the obtaining circuit, a varying circuit for varying a read-out position on the storage medium according to a compared result in the comparing circuit so that the second positional information coincides with the first positional information, a character signal generating circuit for generating a character signal by reading out from the storage medium a character information corresponding to the second positional information when the first positional information and the second positional information coincide, and a mixed signal generating circuit for generating a mixed signal for a superimposed display by mixing to the video signal the character signal generated from the character signal generating circuit.

REFERENCES:
patent: 3786481 (1974-01-01), Hartman
patent: 3872461 (1975-03-01), Jarosik et al.
patent: 3891792 (1975-06-01), Kimura
patent: 3911420 (1975-10-01), Lampson
patent: 3993864 (1976-11-01), Pye et al.
patent: 4203130 (1980-05-01), Doumit et al.
patent: 4245252 (1981-01-01), Nagumo
patent: 4398216 (1983-08-01), Field et al.
patent: 4450442 (1984-05-01), Tanaka
patent: 4475806 (1984-10-01), Daughton et al.
patent: 4599611 (1986-07-01), Bowker et al.
Pilz, Techniques for Transmitting Subtitles for Television Programmes in Such a Way That Their Display is Optional, Aug. 1976, pp. 163-171.
Hawkins and Thomas, The Economic Preparation of Teletext Subtitles, Sep. 1980, pp. 89-92.

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