Apparatus for preventing the simultaneous and overlapping displa

Details Apparatus for preventing the simultaneous and overlapping displa Apparatus for preventing the simultaneous and overlapping displa

1992-08-24

1994-08-30

Kostak, Victor R.

Television

Basic receiver with additional function

For display of additional information

348569, 348584, 348468, H04N 708, H04N 5445

Patent

active

053432495

ABSTRACT:
An apparatus for preventing the simultaneous display and overlapping of teletext (TTX) characters and on-screen display (OSD) characters on a TV receiver monitor. The apparatus includes switching elements connected between a TTX data generating unit and an OSD data generating unit. The switching elements are controlled by a blanking signal generated by the TTX data generating unit, thereby selectively outputing a TTX signal or an OSD signal and displaying one of them on the TV receiver. Therefore, the TTX signal and the OSD signal are not simultaneously displayed on the TV receiver.

REFERENCES:
patent: 4020501 (1977-04-01), Hillberger et al.
patent: 4633294 (1986-12-01), Skerlos et al.
patent: 4677488 (1987-06-01), Zato
patent: 4860106 (1989-08-01), Taupin et al.
patent: 5128766 (1992-07-01), Choi

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