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:
May. 27, 2014
Filed:
Oct. 29, 2010
Shinichi Yoshie, Nagano-ken, JP;
Shinichi Yoshie, Nagano-ken, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A compact information device in which a shortened unlatch time is enabled so such device can transition from a power cutoff mode to a power supply mode to resume supplying power to internal circuits as a result of a latch circuit unlatching a control signal. Embodiments of such a device, which may be a printer, includes a CPU, tactile switch, smoothing capacitor, switch circuit, a switch control signal generator including a latch circuit, and a potential difference detection circuit. The latch circuit and potential difference detection circuit operate with voltage Vin. The CPU outputs a start latch signal VLT when the operating mode changes from the power supply mode to the power cutoff mode. When the tactile switch is turned off, the potential difference detection circuit outputs an unlatch signal VRST. When the unlatch signal VRST is input, the latch circuit unlatches the control signal.