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:
Jan. 20, 1998
Filed:
Aug. 04, 1995
Ji-ho Kim, Seoul, KR;
Samsung Electronics Co., Ltd., Kyungki-do, KR;
Abstract
An apparatus for gamma-correcting image data includes gamma characteristic corrector, a memory, a characteristic selector, and a microprocessor. The characteristic corrector inputs image data values and outputs gamma-corrected image data values corresponding to the image data values according to stored gamma correction information. The memory stores differential data values, and each of the differential data values corresponds to at least one of a plurality of gamma characteristics for gamma correcting the image data values. Furthermore, the differential data values respectively correspond to differences between two values of the gamma-corrected image data values. The characteristic selector outputs a gamma characteristic selection signal which represents a particular gamma characteristic of the plurality of gamma characteristics, and the microprocessor inputs the selection signal and reads particular differential data values from the memory which correspond to the particular gamma characteristic. Then, the microprocessor generates the gamma correction information based on the particular differential data values and stores the gamma correction information in the gamma characteristic corrector. Accordingly, a gamma characteristic of the image signal can be corrected according to various gamma characteristics which are different from each other even though a small capacity of the memory has been used.