Coded data generation or conversion – Analog to or from digital conversion – Digital to analog conversion
Patent
1988-04-04
1990-05-29
Shoop, Jr., William M.
Coded data generation or conversion
Analog to or from digital conversion
Digital to analog conversion
341144, 341152, 377 42, H03M 166
Patent
active
049299476
ABSTRACT:
A digital-to-analog converter comprising: a distributing circuit (2, 3, 4, 5; 2, 13, 14-26) for distributing data pulses, which are bit-serially supplied at constant time intervals, into a plurality of routes
and for providing them as pulses having a constant width; and a converting circuit (12) for adding together the pulses from the distributing circuit and thereby for converting them to an analog output. Such a circuit arrangement can provide pulses for conversion to analog form which all have an identical waveform and an identical area, and errors caused by the difference between the rise and fall times of the pulses can be eliminated and therefore D/A conversion characteristics can be improved.
REFERENCES:
patent: 3603977 (1971-09-01), Szabo et al.
patent: 3754233 (1973-08-01), Sutherland
patent: 4087813 (1978-05-01), Minner et al.
patent: 4663610 (1987-05-01), Metz et al.
Adams Bruce L.
Nippon Precision Circuits Ltd.
Shoop Jr. William M.
Wilks Van C.
Williams Howard L.
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