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. 18, 1999
Filed:
Jul. 03, 1997
Wilhelm Woehl, Hildesheim, DE;
Dieter Baas, Rheinau, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
An electrical device (1), especially a CD changer, is proposed, which offers protection against theft. An electrical device (1) is connected by a connecting cable (35) to a second electrical device (5), especially to a car radio. The connection has a first pole (95) for a first reference potential (15) and a second pole (100) for a second reference potential (25). In the second electrical device (5), the first reference potential (15) is connected to the second reference potential (25). A third pole (55) contains a supply voltage feed for the first electrical device (1). In the first electrical device (1), a control unit (40) is provided for controlling the first electrical device (1). When the connection between the first and second poles (95, 100) is cut, the residual charge remaining in the first electrical device (1) produces a voltage difference between these two poles (95, 100), as a result of which a security procedure is initiated in control unit (40).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile