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. 13, 1997
Filed:
Jan. 24, 1995
Thomas J Lavan, Austin, TX (US);
Jerry D Gandre, Austin, TX (US);
Dell USA, L.P., Austin, TX (US);
Abstract
A battery status indication circuit and a method of indicating battery status. The battery status indication circuit comprises: (1) an indicator having an inactive state and an active state and (2) an indicator modulation circuit adapted to receive a charge level signal indicating a charge level of a battery and transmit, in response thereto, a pulsewidth modulated indicator signal to the indicator, a duty cycle of the indicator signal being a function of the charge level, the indicator thereby toggling between the inactive and active states to provide an indication of the charge level. A single indicator having only two states can therefore be employed to indicate multiple grades of battery charge level.