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:
Dec. 24, 1996
Filed:
Mar. 31, 1995
Applicant:
Inventor:
Markku J Rossi, Houston, TX (US);
Assignee:
Compaq Computer Corporation, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J / ;
U.S. Cl.
CPC ...
364496 ; 340636 ; 320-2 ;
Abstract
The present invention is related to a battery type determination circuit having a notch filter circuit which notches a frequency noise spectrum to indicate a battery type installed in a battery pack. More specifically, the preferred embodiment of the present invention can determine a variety of battery characteristics based on the notched frequency and look-up information stored in a memory chip.