Dynamic magnetic information storage or retrieval – General processing of a digital signal – In specific code or form
Reexamination Certificate
2007-08-07
2007-08-07
Wellington, Andrea (Department: 2627)
Dynamic magnetic information storage or retrieval
General processing of a digital signal
In specific code or form
C360S039000, C360S048000
Reexamination Certificate
active
10903903
ABSTRACT:
A data read/write device includes a data write-processing unit that performs amplitude modulation on write data to obtain an amplitude-modulated signal that contains a plurality of amplitude levels, correlates a plurality of data included in the write data with each amplitude level of the amplitude-modulated signal to obtain amplitude data, and transmits the amplitude data to a magnetic head that writes the amplitude data into a memory area of a recording medium, and a data read-processing unit that reads the amplitude data via the magnetic head from each memory area of the recording medium, and converts the amplitude data into readable read data.
REFERENCES:
patent: 5371721 (1994-12-01), Greidanus et al.
patent: 5402272 (1995-03-01), Nakatsu et al.
patent: 6175456 (2001-01-01), Yun
patent: 6624957 (2003-09-01), Yun
patent: 6633514 (2003-10-01), Awano et al.
patent: 6735028 (2004-05-01), Rothschild et al.
“Multilevel Signal transfers”, Oct. 1, 1978, IBM Technical Disclosure Bulletin, vol. No. 21, Issue No. 5, pp. 1798-1800.
Fujitsu Limited
Greer Burns & Crain Ltd.
Olson Jason
Wellington Andrea
LandOfFree
Method and device for data read/write, recording medium, and... 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 device for data read/write, recording medium, and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for data read/write, recording medium, and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3850471