Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1979-12-17
1983-08-02
Sloyan, T. J.
Communications: electrical
Audible indication
Percussion-type sound producer
307269, 328 63, 340347M, H03K 1303
Patent
active
043969054
ABSTRACT:
A successive approximation analog-to-digital converter controllable by signals to start and interrupt conversion asynchronously with respect to clock signals used to regulate operation of the converter. Separate control signal processing circuits register the occurrence of start-convert and conversion-interrupt signals supplied by a user of the converter, and generate corresponding control signals synchronized with the clock signals. Asynchronous operation of the converter allows it to function in a short-cycling mode, wherein the number of bits of resolution in the conversion process is automatically reduced as little as possible to complete each conversion in the time allotted by the user. A continuous-conversion signal is also provided, to permit operation on a continuous basis, without providing periodic start-convert signals.
REFERENCES:
patent: 3612906 (1971-10-01), Kennedy
patent: 4039960 (1977-08-01), Clark
patent: 4057738 (1977-11-01), Nishimura
The Engineering Staff of Analog Devices, Inc., Analog-Digital Conversion Handbook, 6/72, pp. II-46 to II-48; II-80 to II-83.
Bucklen Willard K.
Chan Daniel F.
Keller Robert W.
Nyhagen Donald R.
Sloyan T. J.
TRW Inc.
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