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:
Feb. 01, 1994
Filed:
Jul. 02, 1992
Toshitsugu Wakabayashi, Nagasaki, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
This invention relates to a waveform generator used in a CRT display unit or the like, and to an apparatus for generating intended saw-tooth waveforms and parabolic waveforms under control of a microcomputer. The microcomputer produces a charging control signal having a prescribed pulse frequency and duty-cycle for forming a rising period in one cycle of the output waveform and supplies the signal to terminal a. Then, a capacitor is charged through a transistor and charging resistor. The microcomputer produces a discharging control signal having a prescribed pulse frequency and duty-cycle for forming a falling period in a cycle of the output waveform and supplies the signal to terminal b. Then, the capacitor is discharged through a transistor and discharging resistor. The output waveform voltage is produced across the capacitor.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile