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. 04, 2001
Filed:
Apr. 27, 2000
Hendrik Boezen, Nijmegen, NL;
Abraham Klaas Van Den Heuvel, Nijmegen, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
The common mode component in the difference signal on the bus terminals (,) of a CAN bus is counteracted by four transistors (M,-M,) connected between the supply terminals (,) and a center tap (,) of a voltage divider (,A,,B,,A,,B) between the bus terminals (,). As a result of this, the voltage on the center tap (,) varies to a substantially smaller extent or not at all. Thus, it is possible to use a simpler differential amplifier (,) having a smaller common mode swing at the inputs (,). Moreover, the attenuation factor selected for the voltage divider can be smaller, as a result of which a higher difference voltage is available for the differential amplifier (,).