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. 18, 2014
Filed:
Jan. 24, 2012
Tatsunori Sasaki, Kawasaki, JP;
Tatsunori Sasaki, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
This invention relates to realization of a more efficient power-saving mode in a printing apparatus capable of connecting an extension board for function enhancement. When the printing apparatus connects an extension board including a CPU and memory, the CPU of the extension board receives information required to return to a normal operation mode from a controller unit, and stores the received information in the memory before transition from the normal operation mode to the power-saving mode. Then, the controller unit lowers an operation frequency of a CPU thereof, and stops power supply to respective units of the apparatus, which do not require any power supply. In the power-saving mode, the extension board monitors an elapse of a predetermined time period and reception of print data, thereby, even in the power-saving mode, normally returning to the normal operation mode after the elapse of the time period.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile