Solid state color image sensor using a field-staggered color fil

Details Solid state color image sensor using a field-staggered color fil Solid state color image sensor using a field-staggered color fil

Filed on

1992-07-24

Date issued

1993-10-05

Examiner

Groody, James J.

Patent Class

Facsimile and static presentation processing

SubClass

Static presentation processing

SubSubClass

Attribute control

Other Related Categories

358 41, 35821322, H04N 907

Type

Patent

Status

active

Patent number

052510190

Description

ABSTRACT:
A sensor 11 for a video camera includes a color filter array 12 of color filter elements covering a like array 14 of image sensing elements. Two fields of a video frame are provided by interlaced transfer of image signals from the sensor 11. The color filter array 12 is configured in relation to the sensor array 14 such that at least 75% of the image sensing elements are luminance-sensing (e.g., green) elements and the rest are chrominance-sensing (e.g., red and blue) elements. Furthermore, the chrominance-sensing elements of the same type (red or blue) are separated in a horizontal direction by at least three luminance-sensing (green) elements. The horizontal sampling frequency of the chrominance-sensing elements is increased by arranging horizontal lines containing the chrominance-sensing elements of the same type in staggered line pairs with the chrominance-sensing elements of one line appearing in different columns of the sensor in relation to chrominance sensing elements of the other line.

REFERENCES:
patent: 3971065 (1976-07-01), Bayer
patent: 4479143 (1984-10-01), Watanabe et al.
patent: 4663661 (1987-05-01), Weldy et al.
patent: 4896207 (1990-01-01), Parulski
patent: 5008739 (1991-04-01), D'Luna et al.
"Color Filters and Processing Alternatives for one-chip cameras" by K. A. Parulski (IEEE Trans. on Electronic device; ED-32, No. 8; Aug. 1985, pp. 1381-1389) described in p. 1, line 24.
"Color Imaging System Using a Single cco area Array" by P. L. P. Dillon et al (IEEE on Electronic Devices, ED-251 No. 2, Feb 1978, pp. 102-107).

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