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:
Apr. 28, 2009
Filed:
Jan. 23, 2007
Brian James Cagno, Tucson, AZ (US);
Kenny Nian Gan Qiu, Tucson, AZ (US);
Donald Scott Smith, Tucson, AZ (US);
Brian James Cagno, Tucson, AZ (US);
Kenny Nian Gan Qiu, Tucson, AZ (US);
Donald Scott Smith, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An apparatus, system, and method are disclosed for resetting an inter-integrated circuit (I2C) data line with negative voltage. A hang detection module detects an I2C hung line selected from a data line and a clock line wherein an I2C bus master and I2C bus slave communicate over the data line and the clock line. In response to the detected hung line, a negative voltage generator drives the data line to a specified negative voltage for a specified time interval. A clamp diode clamps the voltage of the data line to greater than a specified limit. On receiving the specified negative voltage, a voltage detector module detects the specified negative voltage of the data line. A timer module detects the specified negative voltage for the specified time interval. In response to detecting the specified negative voltage for the specified time interval, a reset module resets the I2C bus slave.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile