Thermometer-to-adjacent bindary encoder

Details Thermometer-to-adjacent bindary encoder Thermometer-to-adjacent bindary encoder

1986-10-20

1988-03-22

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

340347AD, H03M 136, H03M 716

Patent

active

047332204

ABSTRACT:
An encoder circuit converts a thermometer code into an equivalent adjacent binary code wherein only a single bit is changed to minimally increment or decrement the value of the binary code. The encoder logic is grouped so that the state of any single bit of the thermometer code can affect the state of one and only one bit of the binary code whereby when any least significant thermometer code bit is at an invalid logic level, the invalid level is propagated through the encoder circuit to only a single, least significant binary code bit, without the introduction of any logical errors. The invalid binary code bit is then stabilized to a valid level by one or more latches.

REFERENCES:
patent: 3518663 (1970-06-01), Oddo
patent: 3676687 (1972-07-01), Freedman
patent: 3806915 (1974-04-01), Higgins
patent: 4081830 (1978-03-01), Mick

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