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:
Oct. 23, 2001
Filed:
Jun. 24, 1997
Bernard James Griffiths, Ben Lomond, CA (US);
Derek Mellor, Santa Cruz, CA (US);
Other;
Abstract
A magnetic media storage system output circuit includes a filter for filtering an analog output signal from the storage media system before the analog output signal is provided to a read channel. Within the magnetic media storage system a read/write head reads data from a magnetic medium and provides an analog signal representing the data to an output circuit. The output circuit includes the filter for filtering the analog output signal and a pre-amplifier circuit for amplifying and transmitting the analog output signal to a read channel. Preferably, the filter has a linear frequency response and constant group delay below the cutoff frequency. Current on a write current control pin is used to control the cutoff frequency of the filter so that the cutoff frequency will track the data rate. An output signal from the storage media system output circuit is provided to a read channel.