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:
Sep. 28, 2004
Filed:
Jun. 29, 2001
Amrita Deshpande, Albuquerque, NM (US);
Paul Andrews, Sandia Park, NM (US);
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A robust state machine is provided for controlling a slave interface to an I C-bus. The state machine is configured to enforce the slave-device-protocol of the I C specification, and to provide recovery from anomalous master-device behavior. In accordance with this invention, the state transitions of the state machine at the slave-device are controlled by the master-device's control of the SCL line of the I C-bus, except if a START condition is detected. The state machine is configured to asynchronously respond to a START condition on the I C-bus, regardless of its current state, to force the state machine to a known state. In the known state following the START condition, the slave-device terminates any transmissions to the I C-bus, thereby minimizing subsequent interference on the bus.