Reference delay generator and electronic device using the same

Details Reference delay generator and electronic device using the same Reference delay generator and electronic device using the same

1991-09-18

1993-06-01

Callahan, Timothy P.

Electrical transmission or interconnection systems

With nonswitching means responsive to external nonelectrical...

Temperature responsive

307606, 307608, 307262, 328 55, 328155, 331 1A, H03K 513, H03K 5159

Patent

active

052163024

ABSTRACT:
A reference delay generator includes a delay unit having a plurality of delay elements which are cascaded and respectively have variable delay times. The delay unit receives a reference signal and generates a delayed signal which is a delayed version of the reference signal. A control part detects a phase difference between the reference signal and the delayed signal and generates a control signal which sets the phase difference to an integer multiple of 90.degree.. The control signal is applied to the delay elements, so that the delay times of the delay elements are changed on the basis of the control signal. The control signal is used for, for example, controlling a delay circuit which includes a plurality of delay elements identical to those of the delay unit.

REFERENCES:
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patent: 4899071 (1990-02-01), Morales
patent: 4912433 (1990-03-01), Motegi et al.
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patent: 4958120 (1990-09-01), Gopinathan et al.
patent: 5054038 (1991-10-01), Hedberg
patent: 5059838 (1991-10-01), Motegi et al.
Patent Abstracts of Japan, vol. 7, No. 119 (E-177) May 24, 1983 and JP-A-58 039123 (Nippon Denki KK) Mar. 7, 1983.
Patent Abstracts of Japan, vol. 8, No. 181 (E-261) Aug. 21, 1984 and JP-A-59 072814 (Sanyo Denki KK) Apr. 24, 1984.

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