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:
Apr. 20, 2010
Filed:
Apr. 07, 2006
Yasufumi Suwabe, Ashigarakami-gun, JP;
Yoshiro Yamaguchi, Ashigarakami-gun, JP;
Yoshinori Machida, Ashigarakami-gun, JP;
Motohiko Sakamaki, Ashigarakami-gun, JP;
Atsushi Hirano, Ashigarakami-gun, JP;
Takeshi Matsunaga, Ashigarakami-gun, JP;
Kiyoshi Shigehiro, Ashigarakami-gun, JP;
Shunichiro Shishikura, Ebina, JP;
Yasufumi Suwabe, Ashigarakami-gun, JP;
Yoshiro Yamaguchi, Ashigarakami-gun, JP;
Yoshinori Machida, Ashigarakami-gun, JP;
Motohiko Sakamaki, Ashigarakami-gun, JP;
Atsushi Hirano, Ashigarakami-gun, JP;
Takeshi Matsunaga, Ashigarakami-gun, JP;
Kiyoshi Shigehiro, Ashigarakami-gun, JP;
Shunichiro Shishikura, Ebina, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
An image display device and image display method are provided. The device and method can prevent changes in image density and contrast, which are caused by repeated displaying over long periods of time and changes in environment, by employing accurate electric current detection, due to the following operations. Voltage measurement is initiated with a detection circuit. Next, the application of drive voltage is initiated with a drive power source. An electric current value is calculated from the measured voltage value and the electric current value is temporarily stored. The electric current values are stored every set amount of time and the storage thereof accumulates. Application of the drive voltage is terminated and the integral value of the electric current is calculated in accordance with formulas.