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:
Oct. 11, 2011
Filed:
Dec. 12, 2006
Frank P. A. Van Der Velden, Berghem, NL;
Dirk Groeneveld, Elst, NL;
Frank P. A. Van Der Velden, Berghem, NL;
Dirk Groeneveld, Elst, NL;
ST-Ericsson SA, Geneva, CH;
Abstract
The present invention relates to a battery charge circuit () in a charge-and-play mode capable to reliably determine the completion of a battery charging operation has been described. Such a determination takes into account the behavior of the battery charge circuit () with respect to the temperature, the activity of the circuitry () and the source current limitation. Thus, a distinction can be made between a decrease of the battery charge current ICHG below the end-of-charge current level caused by the full-charge state of the battery () and by the activation of temperature and current regulation circuits. Furthermore, the battery charge circuit () is also configured such that it can be warned both that the activity of the circuitry () is to be limited and, by a timer () measuring the time interval during which the battery charge current ICHG has been reduced to zero, that the battery () is being discharged.