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. 22, 2005
Filed:
Aug. 09, 2002
Markus Baumeister, Aachen, DE;
Heribert Baldus, Aachen, DE;
Thomas Falck, Aachen, DE;
Steffen Hauptmann, Aachen, DE;
Joachim Kahlert, Aachen, DE;
Andras Montvay, Aachen, DE;
Markus Baumeister, Aachen, DE;
Heribert Baldus, Aachen, DE;
Thomas Falck, Aachen, DE;
Steffen Hauptmann, Aachen, DE;
Joachim Kahlert, Aachen, DE;
Andras Montvay, Aachen, DE;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
Theft protection of electronic apparatuses connected to a bus system is implemented in a manner particularly suitable for use in a digital home network based on the IEEE 1394 standard. At least one of the apparatuses in the network is equipped with a monitoring unit switchable between an activated and a de-activated state. In the activated state, the monitoring unit monitors the occurrence of a bus reset which is generated particularly upon removal of an apparatus from the network. After occurrence of such a reset, the monitoring unit compares the list of all apparatuses on the bus with a list generated and stored before the reset. When determining differences, an alarm is triggered which can be reproduced particularly by means of the apparatuses which are present, such as, for example, televisions and hi-fi equipment.