Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Synchronizing moving-head moving-record recorders
Patent
1985-10-25
1986-12-16
Stellar, George G.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Synchronizing moving-head moving-record recorders
G11B 552
Patent
active
046301429
ABSTRACT:
Apparatus for reproducing digital signals recorded on a recording tape comprises a rotary drum about which a recording tape can be trained, a rotary head mounted in the drum, a transport mechanism for transporting the tape over the drum and rotating the head so that a relative speed is established between the head and the tape and the head scans the tape and generates reproduced digital signals in response to digital signals recorded on the tape, and a mode-control mechanism for controlling the transport mechanism so that the tape is transported over the drum at an absolute tape speed that can be varied. A servomechanism responsive to variations in the absolute tape speed adjusts the transport mechanism so that the head acquires a rotary speed such that the relative speed is restored to and maintained at a substantially constant value, not withstanding changes in the absolute tape speed effected under the control of the mode-control mechanism.
REFERENCES:
patent: 4021857 (1977-05-01), Tanimura
patent: 4282552 (1981-08-01), Tachi et al.
patent: 4322755 (1982-03-01), Kosaila
patent: 4484235 (1984-11-01), Yokobori et al.
patent: 4584618 (1986-04-01), Tassery
Doi, Channel Codings for Digital Audio Recordings, J. Audio-Eng. Soc., vol. 31, No. 4, pp. 224-238 (Apr. 1983).
Inazawa Yoshizumi
Satomura Shigeyuki
Takahashi Toshihiko
Tani Toshiyuki
Eslinger Lewis H.
Sinderbrand Alvin
Sony Corporation
Stellar George G.
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