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:
Nov. 23, 1993
Filed:
Jul. 25, 1991
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An image processing apparatus is provided with: at least one image memory for storing each picture element value of an original image; a coordinate inputting device by which a coordinate of an arbitrary point on the original image can be inputted; a device for setting a threshold according to the picture element value at the coordinate inputted by the coordinate inputting device; and a data buffer for successively storing the set threshold. The image processing apparatus is further provided with at least one look up table for converting each picture element value to either one color component data, which color indicates that the picture element value is within the region prescribed by the set threshold, or another color component data, which color indicates that the picture element value is outside the region prescribed by the set threshold, according to the set threshold, each time the threshold is set by the threshold setting device. The threshold setting device sets as a new threshold, a value between the currently set threshold and the previously set threshold, which has been set before the currently set threshold and stored in the data buffer, when canceling the currently set threshold.