Multiple television receiver with teletext function

Details Multiple television receiver with teletext function Multiple television receiver with teletext function

1990-11-27

1992-07-07

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 22, H04N 5262, H04N 5272

Patent

active

051287668

ABSTRACT:
A multiple television screen processing circuit having the teletext function. The circuit comprises a TV video signal generator for producing a TV video signal; a PIP signal generator for producing a PIP signal, an ON screen display signal generator for producing an ON screen display signal, and a teletext signal generator for producing a teletext signal, each of them being controlled by a microcomputer; a selection controller for combing logically said selection-controlling signals; a signal selector for selecting and outputting, under the control of the selection-controlling signals and the output signal of the selection controller, the TV video signal, the PIP signal, the ON screen display video signal or the teletext signal; an amplifier for amplifing the output signal of the signal selector; and a Braun tube for displaying the output signal of the amplifier. Thereby, on a screen can be simultaneously or separately displayed the TV video signal, the PIP signal and/or ON screen display signal; the teletext signal can be displayed on a screen with the ON screen display signal; or the teletext signal can be displayed on a screen with the PIP signal and the ON screen display signal.

REFERENCES:
patent: 4216492 (1980-08-01), Schmalz
patent: 4866524 (1989-09-01), Six
patent: 4941045 (1990-07-01), Birch
patent: 4991012 (1991-02-01), Yoshino

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