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:
Sep. 23, 2003
Filed:
Jun. 22, 1999
Jewel Tsai, Hsinchu, TW;
Mustek Systems Inc., , TW;
Abstract
The present invention provides an apparatus and method for providing extra bits for post image processing, thereby to increase the image bit depth and compensate the loss of image accuracy. The present invention operates on multiple least insignificant bits of the post-pixel memory device and the pre-pixel memory device to generate compensation bits. The compensation bits can be appended to the rightmost bit positions of the current pixel. With the compensation bits, the image bit depth can be increased. Consequently, the image will be processed more accurately after post processing. Moreover, since the extended bitstream preserves the complete bits of the original pixel, therefore the accuracy of the original image will not be affected by the compensation bits.