The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 26, 1990
Filed:
Sep. 08, 1987
Richard K Gerlach, Rolling Hills Estates, CA (US);
Truvel Corporation, Torrance, CA (US);
Abstract
A scanning apparatus for scanning and recording a color image. A source of light having a certain flicker rate illuminates the color image, and a scanning element, such as a charge-coupled device, scans the color image during scanning periods to generate electrical signals which are representative of the color image. Each of the scanning periods is equal to the reciprocal of the flicker rate to eliminate effects of the flicker on the electrical signals. A color filter with different-colored filter segments located between the scanning element and the color image enables the scanning element to produce electrical signals which are representative of different colors in the color image. The color filter is rotated at a rate such that each filter segment is interposed between the scanning element and the color image for a rotation period which is greater than the reciprocal of the flicker rate. The electrical signals are integrated in the scanning element for a first period (e.g., 8.33 milliseconds) during each rotation period, and are transferred from the scanning element to a memory during a second period (e.g., 2.67 milliseconds) during each rotation period.