Programmable clock generator for an imaging device

Details Programmable clock generator for an imaging device Programmable clock generator for an imaging device

1996-12-30

1999-11-09

Ho, Tuan

Television

Camera, system and detail

Solid-state image sensor

327144, 377 77, H04N 314, H03L 700, G11C 1900

Patent

active

059824280

ABSTRACT:
An imaging device for generating an image signal includes an image sensing device for producing an image signal subject to one or more clock signals and a circuit for generating one or more of the clock signals, wherein the clock signal generating circuit is responsive to a programmable input signal for adjusting a duty cycle of at least one of the clock signals. In particular, by clocking two recirculating shift registers out of phase and parallel loading them with a programmable bit pattern to produce the output clock signals, the frequency of an input clock that is required to produce the output clock signals can be reduced by half.

REFERENCES:
patent: 4922137 (1990-05-01), Small et al.
patent: 5039950 (1991-08-01), McDermott
patent: 5450129 (1995-09-01), Matoba et al.
patent: 5659553 (1997-08-01), D'Alfonso et al.
patent: 5767904 (1998-06-01), Miyake

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