Three digit channel entry by use of an extended keypress

Details Three digit channel entry by use of an extended keypress Three digit channel entry by use of an extended keypress

1990-03-05

1991-05-28

Chin, Tommy P.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

3581941, 455603, H04N 544, H04B 1100

Patent

active

050201395

ABSTRACT:
A channel number data entry system for a television receiver employing a numeric keyboard allows the selection of cable channels having channel numbers greater than 99, without the use of a separate ENTER or 100s key. Specifically, if the leading digit of a desired channel number is a number one, a measurement is made of the time interval during which the number one key is activated. If the measured time interval exceeds 2 seconds, then a three digit channel entry mode is enabled. If the measured time interval does not exceed 2 seconds, then a two digit channel entry mode is enabled. In both modes, the desired channel is tuned upon receipt of the final digit of the channel number.

REFERENCES:
patent: 4162513 (1979-07-01), Beyers, Jr.
patent: 4386436 (1983-05-01), Kocher

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