Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data verification
Patent
1994-03-30
1997-01-14
Kim, W. Chris
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Data verification
G11B 509
Patent
active
055945996
ABSTRACT:
Proper operation of a recording and reproducing apparatus is verified by comparing, after a suitable delay, error detection codes calculated for compressed data prior to being recorded on a medium with error detection codes calculated for the corresponding compressed data reproduced from the medium, thereby reducing the amount of delay memory needed to temporarily store the error detection codes calculated prior to recording of the data.
REFERENCES:
patent: 4549230 (1985-10-01), Odaka
patent: 5309290 (1994-05-01), Sugiyama et al.
patent: 5317413 (1994-05-01), Yanagihara
JP reference No. 3-8176, Chiba et al., English Translation, Jun. 1995.
Mee C. D. and Daniel E. D.: "Magnetic Recording Handbook (Technology and Applications)" 1990, McGraw-Hill, New York XP002003783 * p. 1137, paragraph 4 - p. 1138, paragraph 1; FIG. 8.6 *.
IEEE International Conference on Consumer Electronics, Jun. 5-7, 1991, Rosemont, Illinois, pp. 182-183, XP000288996 Onishi et al.: "An experimental home-use digital VCR with three dimensional DCT and superimposed error correction coding".
Frommer William S.
Kim W. Chris
Sinderbrand Alvin
Sony Corporation
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