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, 2003
Filed:
Feb. 27, 1997
Yoshinari Higuchi, Tokyo, JP;
Toshio Koyama, Kanagawa, JP;
Naoki Nagano, Tokyo, JP;
Yoichi Tsusue, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
An electronic equipment having the function of displaying the battery residual quantity for displaying the usable residual time of a battery pack used as a power source of the electronic equipment. The equipment is designed to cope with different types or future version of the battery cell. The residual usable time of the battery can be known with improved display accuracy. The video camera carries a battery pack 1 outputting at least the information on the residual battery capacity, charging/discharging current detection information and the battery cell voltage detection information. The video camera includes a micro-computer having a communication circuit for receiving the above information from the battery pack , a calculation circuit for calculating the current residual battery capacity based on the information from the battery pack received by the communication circuit , and a display control circuit , and a display device fed with a display signal corresponding to the results of calculations by the calculation circuit of the micro-computer for displaying the residual battery capacity based on the display signal.