Pulse or digital communications – Repeaters – Testing
Patent
1989-09-29
1991-07-09
Safourek, Benedict V.
Pulse or digital communications
Repeaters
Testing
455619, H03D 100, H04L 2706
Patent
active
050311964
ABSTRACT:
A receiver for use in a remote control system in which clock pulse-modulated information pulses are transmitted in a wireless mode to the receiver. The receiver is intended for use in hearing aids energized with supply voltages of approximately 1 V. The receiver includes a receiving device (1) for the conversion of the wirelessly transmitted information pulses into an electric signal and a cascade arrangement of first and second selective amplifier circuits (2) and (4), each of which have their highest gain factor at a frequency which is approximately equal to the frequency of the clock pulses. This cascade arrangement is connected to the output of the receiver device and supplies a first output signal to a mean value detector (5) which produces a rough version of the information pulses, which in turn are shaped in a pulse shaper (6).
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Sibley et al., "A Monolithic Common-Collector Front-End Optical Preamplifier", IEEE Journal of Lightwave Technology, vol. LT-3, NO. 1, 2/1985, New York, U.S. pp. 13-15, FIG. 1.
Wurzburg "Vorverstarker. Fur Infraro Temptanoser" Elektrotechnik, vol. 63, No. 19, 10/1981, p. 71.
Philips "Low-Power Remote Control IR Transmitter and Receiver Preamplifiers" Technical Publication 167, 1985, Mar. 22.
Attrill "Infra-Red Remote Control System" Radio & Electron Constructor (G.B.) vol. 34, No. 12, Aug./Sep. 1981.
Bahlmann Johannes P. M.
Inghels Johannes P. M.
Chin Stephen
Franzblau Bernard
Safourek Benedict V.
U.S. Philips Corporation
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