Registers – Coded record sensors – Particular sensor structure
Patent
1975-04-29
1977-04-12
Safourek, Benedict V.
Registers
Coded record sensors
Particular sensor structure
235183, 328127, H03J 306, G06G 718
Patent
active
040178005
ABSTRACT:
The delinearization circuit includes a first analog switch which is switchable in accordance with the duty cycle of the pulses in an input pulse train, between a given voltage and ground, to form a pulse train of constant amplitude. An intermediate signal is formed by time averaging the output of the first switch. A second analog switch, switchable in accordance with the duty cycle of the input pulse train between the intermediate signal and ground, forms a second pulse train which is time averaged to provide an output signal proportional to the square of the amplitude of the input signal pulse train. In a second embodiment of the invention, a maximum value circuit is utilized to select the greater of the intermediate signal and a reference voltage and the second switch is switched between the selected signal and ground. Through the proper selection of the value of the reference voltage, the desired switchover point can be obtained such that the amplitude of the output signal is linearly proportional to the input pulse train for a selected portion of the range thereof and is proportional to the square of the input pulse train for the remainder of the range thereof.
REFERENCES:
patent: 2931985 (1960-04-01), Offner
patent: 3237117 (1966-02-01), Collings et al.
patent: 3399358 (1968-08-01), Rinehart
patent: 3528043 (1970-08-01), Richter et al.
patent: 3624638 (1971-11-01), Riseman
patent: 3676661 (1972-07-01), Sprowl
patent: 3842416 (1974-10-01), Eto
General Instrument Corporation
Safourek Benedict V.
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