Dynamic magnetic information storage or retrieval – Record editing
Patent
1995-05-03
1996-09-03
Westin, Edward P.
Dynamic magnetic information storage or retrieval
Record editing
360 32, 341 59, G11B 509, H03M 746
Patent
active
055529402
ABSTRACT:
A method and an apparatus for digital signal recording and/or reproduction are disclosed in which tracks are formed sequentially on a recording medium by use of a head unit mounted on a rotary cylinder, an input digital data is recorded in the recording medium, and the digital data thus recorded is reproduced. The input digital data is modulated into a code word having at least d (d: an integer of at least two) successive bits of high- and low-level data in a signal waveform recorded in the recording medium. The timebase of the code word is compressed. The compressed code word is recorded in the tracks of the recording medium by use of the head unit. The code word recorded and compressed in the recording medium is reproduced. The timebase of the reproduced code word is expanded, and the input digital data is reproduced from the expanded code word.
REFERENCES:
patent: 4468710 (1984-08-01), Hashimoto et al.
patent: 4477844 (1984-10-01), Nakano et al.
patent: 4490753 (1984-12-01), Ito et al.
patent: 4501000 (1985-02-01), Immink et al.
patent: 4527202 (1985-07-01), Ohta
patent: 4563710 (1986-01-01), Baldwin
patent: 4670796 (1987-06-01), Kabayashi et al.
patent: 4812930 (1989-03-01), Sakata
patent: 4833470 (1989-05-01), Iketani
patent: 4989102 (1991-01-01), Murabayashi et al.
"HDTV Digital VTR", Laurence Thorpe et al., SMPT Journal, Oct. 1989, pp. 738-474.
Eto Yoshizumi
Ishii Hirotake
Sawamura Hidehiko
Umemoto Masuo
Driscoll Benjamin D.
Hitachi , Ltd.
Westin Edward P.
LandOfFree
Method and apparatus for digital signal recording and/or reprodu 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 digital signal recording and/or reprodu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for digital signal recording and/or reprodu will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1955481