Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1986-04-29
1987-07-28
Roskoski, Bernard
Communications: electrical
Audible indication
Percussion-type sound producer
73517AV, A03K 1320, G01P 1508
Patent
active
046834575
ABSTRACT:
The disclosure is directed to an analog-digital converter which includes a source having an output of fixed frequency time-spaced pulses. An oscillator having an output of time-spaced pulses, harmonically related to pulses from the source, is comprised of a plurality of digital gates connected serially in a loop. At least one of the digital gates includes impedance means such as a resister or capacitor, responsive to an analog condition to form a modulator. Change in the value of the impedance changes the time constant of the modulator to effect a change in the time-spaced pulses related to the instantaneous amplitude of the analog condition. The outputs of the source and the oscillator are applied to a comparator. Means responsive to the comparator is employed to correct the oscillator time-spaced pulses toward an in phase state relative to the time-spaced pulses from the source. A digital signal is produced whose value is proportional to the correction made to the oscillator time-spaced pulses and is thus representative of the instantaneous value of the analog condition.
REFERENCES:
patent: 2985018 (1961-05-01), Williams
patent: 3140612 (1964-07-01), Houghton et al.
patent: 3151487 (1964-10-01), Schuck
patent: 3185942 (1965-05-01), White
patent: 3274497 (1966-09-01), Zimmerman
patent: 3294958 (1966-12-01), DuVall
patent: 3351932 (1967-11-01), Hibbits
patent: 3440645 (1969-04-01), Feigleson
patent: 3623072 (1971-11-01), Pohlman
patent: 3868677 (1975-02-01), Kidd
patent: 3896299 (1975-07-01), Rhodes
patent: 3987422 (1976-10-01), Yangidaira et al.
patent: 4057796 (1977-11-01), Hoogendoorn et al.
patent: 4300135 (1981-11-01), Korn et al.
Awtrey James D.
Nelson Robert G.
Roskoski Bernard
Royalty Funding Ltd.
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