Patent
1977-12-23
1979-06-19
Griffin, Robert L.
325464, H04B 106
Patent
active
041588150
ABSTRACT:
A tuning system having a display unit displaying the channel number of a channel selected by a user in response to display information includes eight binary signals partitioned into first and second groups each of four binary signals arranged in BCD (Binary Coded Decimal) format representing the tens and units digits, respectively, of the channel number, includes a memory for storing seven binary signals partitioned into a third group of three binary signals and a fourth group of four binary signals also representing the tens and units digits, respectively, of the channel number. The third group consists of the three least significant binary signals of the first group. The fourth group consists of four binary signals having the same states as the state of the four binary signals, respectively, of the second group when the tens digit of the channel number is less than eight and otherwise having the complementary states of the states of the four binary signals, respectively, of the second group. Encoder and decoder circuits are provided for converting between the first and second groups and the third and fourth groups, respectively.
REFERENCES:
patent: 3968443 (1976-07-01), Leuschner
patent: 4005369 (1977-01-01), Parisoe
patent: 4031474 (1977-06-01), Ehni
Chin Tommy P.
Emanuel Peter M.
Griffin Robert L.
Rasmussen Paul J.
RCA Corporation
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