Title:
MODULATION METHOD, RECORDING METHOD, REPRODUCTION METHOD, RECORDING/REPRODUCING DEVICE AND REPRODUCING DEVICE
Document Type and Number:
Japanese Patent JP3277430
Kind Code:
B2
Abstract:
PURPOSE: To enable the high-density recording of the recording medium, to improve the error rate and to easily define data in the case of the Vitabi demodulation.
CONSTITUTION: An 8-10 modulator 10 converts data into a code by using the one whose CDS after the NRZI modulation in (0,3;8, 10;1) codes is 0, ±2. In the serial code series, the 8-bit data are converted into 10-bit ones and records them in a magnetic tape 1 by using the only code where the series of 1 is N (N=12-18). A PR1 equalizer 33 equalizes a reproduction signal obtained by reproducing the magnetic tape 1 by a partial response class 1. A Vitabi demodulator 34 performs decoding and reproduces the data.
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Inventors:
Shinichi Fukuda
Application Number:
JP4220894A
Publication Date:
April 22, 2002
Filing Date:
March 14, 1994
Export Citation:
Assignee:
ソニー株式会社
International Classes:
G11B20/10; G11B20/14; G11B23/04; H03H15/00; H03H17/00; H03H21/00; H03M5/14; H03M7/14; H03M13/23; H04B3/04; (IPC1-7): H03M7/14; G11B20/10; H03M13/23
Domestic Patent References:
| JP2276315A | ||||
| JP2270422A | ||||
| JP6069943A |
Attorney, Agent or Firm:
Akira Koike (2 outside)
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