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:
Apr. 19, 2005
Filed:
Jul. 31, 2001
Catharine Anne Maple, Bristol, GB;
Jonathan Peter Buckingham, Bristol, GB;
Catharine Anne Maple, Bristol, GB;
Jonathan Peter Buckingham, Bristol, GB;
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A data reader is arranged to read data comprising user dataand non-user datawritten across at least two channels of a data-holding medium, said data being arranged into a plurality of data itemseach containing user data and non-user data, with said non-user data holding information relating to said user data, including write pass number information, and data items written across the said channels at the same time being identified as a set of data items, said data reader holding a current write pass number and having a read headfor reading a respective said channel of said data-holding mediumto generate a data signal comprising said data items, and processing circuitryarranged to receive and process said data signals of a set of data items, including processing said write pass number information of each of said data items in said set, and causing updating of said current write pass number held by said data reader on the basis of the write pass number information of said data items in said set.