Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1975-05-08
1977-04-05
Gruber, Felix D.
Communications: electrical
Audible indication
Percussion-type sound producer
330124R, 340 155GC, H03K 1302, H03G 300
Patent
active
040165574
ABSTRACT:
In an analog data acquisition system, used for digital treatment, analog signals of different levels received from remote locations are amplified with a selected gain before being converted by a common A/D converter. A discretely variable gain amplifier is used in which a series of programmed predetermined ranges are sequentially tested against the capability of the A/D converter in relation to the particular input analog signal. The first acceptable gain is selected and a code can be used to identify the selected gain for digital treatment of the derived corresponding digital signal.
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Boinodiris: Event Controller Useful for Analog Signal Handling, IBM Tech. Disclosure Bull., vol. 16, No. 7, Dec. 1973, pp. 2094-2095.
Szabo Andras I.
Zitelli William E.
Gruber Felix D.
Lorin C. M.
Westinghouse Electric Corporation
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