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:
Feb. 19, 2008
Filed:
Aug. 04, 2006
Control system of motors for rotating a disk and for positioning heads of a mass storage disk device
Giuseppe Maiocchi, Capiago Intimiano, IT;
Michele Boscolo, Chioggia, IT;
Roberto Bardelli, Fino Mornasco, IT;
Giuseppe Maiocchi, Capiago Intimiano, IT;
Michele Boscolo, Chioggia, IT;
Roberto Bardelli, Fino Mornasco, IT;
STMicroelectronics S.r.l., Agrate Brianza, IT;
Abstract
An integrated control and power driving system moves a read/write head carrying arm over the surface of a disk. The integrated control and power driving system is applicable to a spindle motor, a mass storage disk drive and a voice-coil motor, for example, and includes a first chip and a second chip. The first chip integrates the output power stages driving the motors, and has an interface for outputting feedback signals representing functioning conditions of the voice-coil motor and of the spindle motor, and for receiving digital control signals of the output power stages. The second chip integrates logic drive and control circuitries of the power stages and an interface for receiving the feedback signals output by the first chip, and for transmitting to the first chip the digital control signals.