Multi-level television receiver channel indicia display

Details Multi-level television receiver channel indicia display Multi-level television receiver channel indicia display

1974-04-23

1976-03-16

Trafton, David L.

Communications: electrical

Audible indication

Percussion-type sound producer

1161244, 315135, 315205, 340271, 340332, G08B 536

Patent

active

039450031

ABSTRACT:
A channel number display device for a television receiver for displaying the numerals of the channel to which the receiver is tuned with the display being initially bright immediately after a channel change, and then after a predetermined time of several seconds, being reduced in brightness so as not to distract from the program material. Through the use of a thyristor, regardless of the number of individual elements in the numerical display, the brightness levels may be held to predetermined quantities.

REFERENCES:
patent: 2103334 (1937-12-01), McWeeny
patent: 2746029 (1956-05-01), Pfund
patent: 3138737 (1964-06-01), French
patent: 3836911 (1974-09-01), Gibson et al.

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