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:
Dec. 31, 2002
Filed:
Nov. 03, 1999
Francis K. King, San Jose, CA (US);
Ranvir Koshal, Sunnyvale, CA (US);
DCARD, Inc., Milpitas, CA (US);
Abstract
This invention discloses a data storage drive system. The system includes a pickup head for performing data access functions connected to a secondary winding of a transformer. The transformer further includes a primary winding connected to a driver controller provided with a pre-amplifier for generating a data writing pulse. The secondary winding further having an pulse decay-constant adjustment capacitor and a pulse decay-constant adjustment inductor for adjusting a pulse decay constant for generating less than ten-percent sag for the data writing pulse whereby the writing pulse can overwrite an entire bit-length onto a data track In a preferred embodiment, the pickup head and the secondary winding are configured as a removable and replaceable module. In a preferred embodiment, the pickup head is provided with signal reading and writing head for a magnetic or optical flat data-storage medium. In another preferred embodiment, the pickup head is provided with signal reading and writing head for an optical flat data-storage medium. In another preferred embodiment, the drive system is further provided with an optical to electrical signal converter for converting optical signals retrieved from the optical flat data-storage medium to electrical signals.