Dynamic magnetic information storage or retrieval – General recording or reproducing – Specifics of equalizing
Patent
1996-11-08
1999-12-21
Psitos, Aristotelis M.
Dynamic magnetic information storage or retrieval
General recording or reproducing
Specifics of equalizing
360 48, 386 1, 386 21, 386 40, 386113, 386116, 386124, 386 46, G11B 5035
Patent
active
060057327
ABSTRACT:
Device and method for restoring data in a digital VCR is disclosed in which redundancy is provided for detection of more reliable user data. The device optimally equalizes data reproduced in the VCR, and employs comparison detection in restoring the equalized data at the present time. This is accomplished by comparing the equalized data, at the present time, to either an even series prior data or an odd series prior data which has passed through the equalizing part. Determination of the data, at the present time, as not being of a positive polarity where the prior data is determined to be of a positive polarity and determination of the data, at the present time, as not being of a negative polarity where the prior data is determined to be of a negative polarity, thereby prevents the wrong determination applied to the above determination result in restoring the data to the present time.
REFERENCES:
patent: 4698811 (1987-10-01), Eto et al.
LG Electronics Inc.
Psitos Aristotelis M.
Vann Joseph M.
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