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:
Jun. 28, 2016
Filed:
Aug. 06, 2015
Oracle International Corporation, Redwood City, CA (US);
Frank Smith, Nederland, CO (US);
ORACLE INTERNATIONAL CORPORATION, Redwood City, CA (US);
Abstract
Embodiments include systems and methods for improving electromagnetic compatibility of a data storage library to meet electromagnetic interference (EMI) requirements. Embodiments can operate in context of a data storage library having one or more robots to ferry storage media between media cells and media drives. The robot(s) can communicate with a controller system via a communications link using respective drivers, thereby employing coordinated-spread-spectrum, frequency-shifted keying (FSK) signals. For example, a transmitting driver can modulate instruction data into an FSK signal and transmit the FSK signal over a predefined spread-spectrum carrier signal; and a receiving driver can receive the FSK signal on the predefined spread-spectrum carrier signal and demodulating the FSK signal to recover the instruction data. This can spread EMI over multiple carrier frequencies, thereby reducing the power spectral density of the emissions, and reducing the EMI level at particular frequencies to below a predefined limit.