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:
Aug. 11, 1998
Filed:
Oct. 19, 1994
David Anthony Freitas, Morgan Hill, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A channel circuit that receives an analog disk readback signal of a data storage disk drive includes a comparator string and a data channel binary decoder that together comprise what is commonly referred to as a flash analog-to-digital (A/D) converter, which processes the data channel information of the readback signal. The servo information of the readback signal is provided to the comparator string of the data channel flash A/D converter, whose output then is provided to a servo burst binary decoder for decoding to produce the desired servo burst data. Thus, the servo information is digitized and decoded at the relatively high speed possible with a flash A/D converter, without requiring a comparator string in addition to what would otherwise be provided for the data channel application.