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:
Jul. 02, 1996
Filed:
Nov. 01, 1993
Toshihiko Mitsuse, Fukuoka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An image forming apparatus includes a dot forming unit responsive to a drive signal for forming a dot on a pixel when the drive signal is indicative of forming the dot to reproduce a halftone image. The apparatus further includes a drive signal generation circuit for generating the drive signal according to a video density signal, a deletion signal, an addition signal, and a directional signal. The deletion signal indicates that the video density signal of the pixel shows a shadow level and there is a first edge adjacent to the pixel in a first image around the pixel. The addition signal indicates that the video density signal of the pixel shows a highlight level and there is a second edge adjacent to the pixel in a second image around while the pixel, the directional signal indicates a direction of the first and second edges from the pixel. The drive signal is pulse-modulated by the video density signal. When the addition signal indicates an addition mode, a small dot is added at one of side portions of the pixel according to the directional signal. When the deletion signal indicates a deletion mode, one of side portions of dot which would be formed according to said video density signal is deleted according to the directional signal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile