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. 09, 1999
Filed:
Jul. 11, 1997
Makoto Hinohara, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A battery pack and a device, each including a CPU, communicate with each other. When the battery pack is mounted to the device, the CPU of the device reads a voltage V, output from dry cells built in the battery pack, from a positive terminal. The CPU sends a ready signal, and compares the read dry-cell voltage V, and a dry-cell voltage included in dry-cell state information sent from the CPU of the battery pack, in response to the sent ready signal. When the voltages match, the CPU of the device outputs an LEDON signal corresponding to the remaining capacitance of the dry cells. The CPU of the battery pack turns on some of the LEDs, the number of which corresponds to the received LEDON signal for three seconds, to indicate to the user the remaining capacitance of the dry cells. This reports the user the remaining capacitance as well as an indication of the completion of mounting.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile