Rotary head type digital-audio reproducing device with improved

Details Rotary head type digital-audio reproducing device with improved Rotary head type digital-audio reproducing device with improved

1987-09-21

1990-07-24

Faber, Alan

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 32, G11B 5584

Patent

active

049438735

ABSTRACT:
A rotary head type digital-audio reproducing device is disclosed. This device is arranged such that: digital signals, tracking pilot signals with frequencies producing reduced azimuth effects and SYNC signals are recorded on tracks in a predetermined format; locations of recording patterns of the pilot signals and the SYNC signals are different; the signals are reproduced by at least two rotary heads each having a width larger than that of the track; cross talk of the pilot signals on the ON-track and the pilot signals on the two adjacent tracks is obtained in the output of the rotary head; a capstan servo is controlled by a level difference of cross talk between the pilot signals on the two adjacent tracks; and the rotary head scans on the track. In this arrangement, the device includes pilot signal detecting means for detecting risings of the pilot signals and holding means for sample-holding the cross talk of the pilot signals on one adjacent track in accordance with the recording pattern upon a detection of the pilot signals. The capstan servo is controlled by generating a signal exhibiting a quantity of track-deviation in conformity with a level held by the holding means and a level of cross talk of the pilot signals on the other adjacent track.

REFERENCES:
patent: 4530012 (1985-07-01), Kinjo
patent: 4656539 (1987-04-01), Sugiki et al.
patent: 4714971 (1987-12-01), Sigiki et al.
patent: 4739420 (1988-04-01), Odaka et al.
patent: 4755893 (1988-07-01), Yamada et al.

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