Analog, two signal correlator

Details Analog, two signal correlator Analog, two signal correlator

1988-06-17

1989-05-23

Ruggiero, Joseph

Boots, shoes, and leggings

364862, 357 24, 377 63, G06G 702

Patent

active

048336360

ABSTRACT:
A correlator, such as may be used in a phase detecting device of an automatic focusing circuit for a camera , has a simple arrangement that attains improved accuracy and high speed. A pair of charge storing elements is provided to which input signals are applied. When predetermined charges are supplied into potential wells formed in the charge storing elements, charge remaining in the potential wells depending on their depth can be detected as the absolute value of the difference between the two input signals. Therefore, the input signals can be subjected to correlation directly as they are, that is, in analog form, without conversion to digital form.

REFERENCES:
patent: 4034199 (1977-07-01), Lampe et al.
patent: 4041298 (1977-08-01), Lampe et al.
patent: 4079238 (1978-03-01), Lampe et al.
patent: 4509181 (1985-04-01), Sauer
patent: 4639678 (1987-01-01), Schlig et al.

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