Dynamic magnetic information storage or retrieval – Monitoring or testing the progress of recording
Patent
1983-07-21
1989-08-01
Hecker, Stuart N.
Dynamic magnetic information storage or retrieval
Monitoring or testing the progress of recording
360 47, 371 38, 371 65, G11B 509, G11B 502, G06F 1100
Patent
active
048537985
ABSTRACT:
A tape player includes digital and analog reproducing sections for playing back a magnetic tape having recorded thereon encoded digital data arranged in data blocks and an analog signal running parallel to the digital data. A switching circuit in the digital reproducing section includes an error-detecting circuit that indicates the presence of errors or data drop-outs and a width detector that provides an initial error signal when a predetermined consecutive number of data blocks contain errors or are not being reproduced. A decoder provides decoded digital information and a remaining error signal when an uncorrected error is encountered. The remaining error signal is generated with a predetermined delay after the digital data is read from the tape. If the initial error signal is present when the remaining error signal is generated, an AND circuit and a flip-flop in the switching circuit generate a switching signal to substitute the analog signal for the digital signal.
REFERENCES:
patent: 3761903 (1973-09-01), Bird, Jr. et al.
patent: 4202018 (1980-05-01), Stockham, Jr.
patent: 4211997 (1980-07-01), Rudnick et al.
patent: 4254500 (1981-03-01), Brookhart
patent: 4323934 (1982-04-01), Giraud
patent: 4328580 (1982-05-01), Stockham, Jr. et al.
patent: 4382299 (1983-05-01), Dieterich
patent: 4389681 (1983-06-01), Tanaka
Fukuju Yujio
Niiro Makoto
Bowler Alyssa H.
Eslinger Lewis H.
Hecker Stuart N.
Maioli Jay H.
Sony Corporation
LandOfFree
Method and apparatus for reproducing digital or analog signals 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 reproducing digital or analog signals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for reproducing digital or analog signals will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-135862