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. 09, 2005
Filed:
Feb. 26, 2002
Sadatoshi Narazaki, Chiba, JP;
Sohei Tanaka, Kanagawa, JP;
Sadatoshi Narazaki, Chiba, JP;
Sohei Tanaka, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
For an ink jet recording apparatus that utilizes the STOP mode function of a CPU to reduce power consumption and a method for controlling the recording apparatus, many NMI interrupts occur due to chattering generated upon switching when the trigger for the restoration from the STOP mode is effectuated by use of the power switch, and the normal ON/OFF process for the power supply is disabled. For example, therefore, an ink jet recording apparatus, which is provided with a CPU having plural modes including a mode to reduce the power consumption by suspending the clock signal as an operational mode, and receives a signal from a power switching unit as an NMI interrupt signal for the execution of NMI interrupt process, is arranged to be provided with a controller for prohibiting the NMI interrupt until operation is completed by way of the status of the recording apparatus with respect to the NMI interrupt process to be executed by the input of the signal from the power switching unit.