Method and apparatus for improving the performance of a disk...

Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C360S075000, C360S078120

Reexamination Certificate

active

07430091

ABSTRACT:
An implementation of a disk drive with improved efficiency where a read head supported by a first positioning component is provided and a write head supported by a second positioning component is also provided. By positioning the write head behind the read head at a predetermined angle, the disk drive can execute a “read-before-write” or “read-modify-by-XOR-write” operation by before the platter has rotated a full revolution.

REFERENCES:
patent: 5073833 (1991-12-01), Best et al.
patent: 5235478 (1993-08-01), Hoshimi et al.
patent: 5355486 (1994-10-01), Cornaby
patent: 5396379 (1995-03-01), Mayo
patent: 5523901 (1996-06-01), Anderson et al.
patent: 5610808 (1997-03-01), Squires et al.
patent: 6104581 (2000-08-01), Huang et al.
patent: 6236528 (2001-05-01), Katayama et al.
patent: 6532121 (2003-03-01), Rust et al.
patent: 6883062 (2005-04-01), Susnjar
patent: 6934112 (2005-08-01), Ono et al.
patent: 2001/0036034 (2001-11-01), Chang et al.
patent: 2002/0060885 (2002-05-01), Money
patent: 2005/0278360 (2005-12-01), Boyd et al.
Ruemmler, C., et al., “An introduction to disk drive modeling,”IEEE Computer, 1994, 27(3), 17-29 (attached pp. 1-17).
Brain, M., “How hard disks work,” http://computer.howstuffworks.com/hard-disk.htm/printable, 1-7 Jul. 25, 2005.
Definition, Exclusive disjunction - Wikipedia, the free encyclopedia, http://en.wikipedia.org/wiki/XOR, 1 page Jul. 25, 2005.
Erasure code, Wikipedia, the free encyclopedia, http://en.wikipedia.org/wiki/Erasure—code, 1 page Aug. 09, 2005.
In computer science - Exclusive disjunction - Wikipedia, the free encyclopedia, http://en.wikipedia.org/wiki/XOR, 1 page Jul. 25, 2005.
Merritt, R., “Toshiba ships ‘perperdicular’ disk drive,”EETimes, http://www.eetimes.com
ews/latest/showArticle.jhtml, 1-2 Aug. 17, 2005.
Party checking - What is parity checking? —A word definition from the Webopedia Computer Dictionary, http://www.webopedia.com/TERM/p/parity—checking.html, 1-3 Dec. 12, 2005.
Raid - What is RAID? —A word definition from the Webopedia Computer Dictionary, http://www.webopedia.com/TERM/R/RAID.html, 1-4 Dec. 12, 2005.
Ruemmler, C., et al., “An introduction to disk drive modeling,”IEEE Computer, 1994, 27(3), 17-29 (attached pp. 1-17).
Sector - What is sector?—Word definition from the Webopedia Computer Dictionary, http://www.webopedia.com/TERM/s/sector.html, 1-3 Dec. 12, 2005.
Tornado codes - Wikipedia, the free encyclopedia, http://en. wikipedia.org/wiki/Tornado—codes, 1 page Aug. 09, 2005.
XOR operator - What is XOR operator? —A word definition from the Webopedia Computer Dictionary, http://webopedia.com/TERM/X/XOR—operator.html, 1 page Jul. 25, 2005.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method and apparatus for improving the performance of a disk... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for improving the performance of a disk..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for improving the performance of a disk... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3977960

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.