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:
Jan. 02, 1996
Filed:
Jul. 07, 1994
Winfried Glaeser, Markt Schwaben, DE;
Rudolf Holzner, Altdorf, DE;
Guenter Watzlawik, Taufkirchen, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A control system for controlling access to a bus (BU) by a unit (P) connected to the bus (BU), including a ring circuit in which a monoflop function element and one or more coupling elements are connected in-line, each coupling element associated with a respective unit. For controlling access, a logic signal of a first type is supplied into the ring by the monoflop function element, the logic signal being successively conducted via the coupling elements to the units seeking access to the bus. Access to the bus is only allowed when the coupling element senses a transition from a logic state of the first type to a logic state of a second type at its ring circuit input.