Title:
DEMODULATOR
Document Type and Number:
Japanese Patent JPS5923905
Kind Code:
A
Abstract:
A demodulator for demodulating alternating signals modulated by pulse modulation, or by frequency modulation. The demodulator requires only a single constant current source, a single ramp voltage producing capacitor, and a sample-and-hold function. The intelligence contained in the modulated carrier is transformed into a first pulse train, and a second pulse train is produced in response to the first pulse train. The first pulse train samples and holds the ramp voltage, and the second pulse train immediately resets the ramp voltage circuit following each sample. The held voltage is a replica of the modulating signal, produced without the use of filters for removing the carrier.
Inventors:
SHIYAN TSUI SAN
Application Number:
JP12681183A
Publication Date:
February 07, 1984
Filing Date:
July 11, 1983
Export Citation:
Assignee:
WESTINGHOUSE ELECTRIC CORP
International Classes:
H02H3/28; H03D3/00; H03D3/04; H03K9/04; H03K9/06; H03K9/08; (IPC1-7): H02H3/26; H03D3/00
Domestic Patent References:
| JPS5164859A | 1976-06-04 | |||
| JPS5382385A | 1978-07-20 |
Attorney, Agent or Firm:
Koichiro Kato
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