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:
Mar. 16, 2004
Filed:
Nov. 08, 1999
Applicant:
Inventor:
Minoru Akiyama, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06R 1/500 ;
U.S. Cl.
CPC ...
G06R 1/500 ;
Abstract
A resolution heightening circuit comprises a modulation information generating circuit that receives printing data supplied from a host printer control circuit to generate a pulse width modulation information signal on the basis of the printing data. The modulation information generating circuit uses a reference template of four lines by three dots to increase the number of dots for a line at a printing unit. A modulation circuit is connected to the modulation information generating circuit and the printing unit and produces modulated driving pulses in response to the pulse width modulation information signal to supply the modulated driving pulses to the printing unit.