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. 23, 2011
Filed:
May. 31, 2006
Takashi Takehana, Ueda, JP;
Hisakazu Koyama, Nagano, JP;
Tamakazu Kitamura, Hagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A data processing device with maintenance counters reliably stores the maintenance counter values. A data processing device such as a printer has RAM for storing the maintenance counter values, EEPROM segmented into a nonvolatile maintenance counter area and a temporary maintenance counter storage area, and a CPU for updating the maintenance counter values in RAM based on detection of a state change in the printer. The CPU writes the maintenance counter values accumulated in RAM at a predetermined time to the temporary maintenance counter storage area, and at a predetermined time writes the maintenance counter values from the temporary maintenance counter storage area to the nonvolatile maintenance counter area.