Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1983-06-27
1985-07-23
Dobeck, B.
Communications: electrical
Audible indication
Percussion-type sound producer
340347AD, H03K 1302
Patent
active
045311137
ABSTRACT:
A capacitor array for a companded pulse code modulation voice codec includes a first plurality of capacitors having a common capacitance C each. A plurality of switching means individually and selectively couple one plate of each of the capacitors to a first point of reference potential or to a second point of reference potential. A second plurality of capacitors has a common capacitance 2C, each, which is coupled in series to form a plurality of junctions, each of the junctions being coupled to a separate one of second plates of the first plurality of capacitors.
REFERENCES:
patent: 4028694 (1977-06-01), Cook et al.
patent: 4077035 (1978-02-01), Yee
patent: 4129863 (1978-12-01), Gray et al.
patent: 4195282 (1980-03-01), Cameron
patent: 4200863 (1980-04-01), Hodges
patent: 4404544 (1983-09-01), Dwarakanath
patent: 4476456 (1984-10-01), Domogalla
Dobeck B.
Fisher Fred
GTE Laboratories Incorporated
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