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:
May. 16, 2000
Filed:
Oct. 24, 1995
Applicant:
Inventors:
Assignee:
Ricoh Company, Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
345431 ;
Abstract
The current methods and systems for correcting image information improve input and output characteristics. Although .gamma. correction curves have been used in prior art, the current invention allows more refined control in the correction process without additional parameters or hardware. The refined control includes adjustments at a localized area of the correction curve, an efficient conversion between a standard range value and a device-dependent value, a color-specific correction and a flexible user interface. Furthermore, the above described advantages are provided on demand rather than storing the pre-calculated information.