Dynamic magnetic information storage or retrieval – Record copying
Patent
1996-04-24
1998-11-24
Psitos, Aristotelis M.
Dynamic magnetic information storage or retrieval
Record copying
360 23, 360 26, 386 53, G11B 586
Patent
active
058415971
ABSTRACT:
A high-speed dubbing system which is not a complicated system adjusts phase shifts to return a plurality of multiple divided master tape audio signals to a time series signal array which is the same as that of the original master tape signal. The dubbing system has a continuous digital audio signal obtained by playing back the master tape at a nominal playback speed; the audio signal is divided by a specified division unit and an array of data blocks is obtained and converted to generate N units of divided master tape playback signals, a specified length portion of each data blocks of the N systems of divided master tape playback signals is replaced by phase matching code data. The N systems of divided master tape playback signals are intermittently recorded onto tape at the nominal playback speed to produce N divided master tapes. These N divided master tapes are played back simultaneously and in synchronism to obtain N systems of playback signals. In each of the N systems of playback signals, a valid data block portion is obtained based on the phase matching code data, by matching the phases of the N systems of playback signals so that the matched data blocks become the same as the playback signals of the original master tape. The N systems of playback signals are compressed to 1/N to generate an NX-speed recording signal, and this NX-speed recording signal is recorded onto a slave recording medium at N times the nominal playback speed.
REFERENCES:
patent: 4357702 (1982-11-01), Chase et al.
patent: 5481411 (1996-01-01), Nakatani
patent: 5530599 (1996-06-01), Sakigawa
patent: 5636311 (1997-06-01), Nakatani
Cullen Larry T.
Meller Michael N.
Psitos Aristotelis M.
Victor Company of Japan Ltd.
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