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:
Mar. 12, 2002
Filed:
Dec. 28, 1999
John T. Contreras, San Jose, CA (US);
David Anthony Freitas, Morgan Hill, CA (US);
Klaassen Berend Klaassen, San Jose, CA (US);
International Business Machines Corp., Armonk, NY (US);
Abstract
A recording channel front-end circuit for driving a write element over a transmission line interconnect provides the improved performance during writing of information. In one embodiment, the recording channel front-end circuit includes a voltage-type write driver coupled to the transmission line interconnect and operable to output a write driver signal to the transmission line interconnect and a receiver termination circuit coupling the transmission line interconnect to the write element. The receiver termination circuit may include an impedance matching network operable match a terminal impedance of the write element to be substantially equal to a characteristic impedance of the transmission line interconnect. In another embodiment, the recording channel front-end circuit includes a voltage-type write driver coupled to the transmission line interconnect and operable to output a write driver signal to the transmission line interconnect and a source termination circuit coupling the voltage-type write driver to the transmission line interconnect. The source termination circuit may include an impedance matching circuit operable match a terminal impedance of the voltage-type write driver to be substantially equal to a characteristic impedance of the transmission line interconnect.