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:
Aug. 17, 1999
Filed:
Apr. 15, 1997
Hitoshi Takeda, Shizuoka, JP;
Toru Nakayama, Shizuoka, JP;
Goichi Oda, Shizuoka, JP;
Masayasu Yamashita, Shizuoka, JP;
Koito Manufacturing Co., Ltd., Tokyo, JP;
Abstract
A discharge lamp lighting device for turning on a discharge lamp, including: a power system which generates a high voltage, the power system having a grounding line; a control system having an analog circuit which has a grounding line, and a digital circuit which has a ground wire, the control system for controlling the power system; and a power source system for generating voltages to drive the power system and the control system, wherein the grounding line of the power system, the grounding line of the analog circuit in the control system and the grounding line of the digital circuit in the control system are provided independently of each other.