Multiple television receiver with teletext function

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

H - Electricity

04

N

H04N 7/08 (2006.01) H04N 5/445 (2006.01) H04N 5/45 (2006.01) H04N 9/64 (2006.01)

Patent

CA 2031072

A multiple television screen processing circuit having a 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 is controlled by a microcomputer. There is a selection controller for combing logically the selection- controlling signals. A signal selector selects and outputs, under the control of the selectioncontrolling 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. There is an amplifier for amplifying the output signal of the signal selector. A Braun tube displays the output signal of the amplifier. Thus, the TV video signal, the PIP signal and/or ON screen display signal can be simultaneously or separately displayed on a screen. 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.

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