Tracking error signal detecting apparatus using an electron beam

Details Tracking error signal detecting apparatus using an electron beam Tracking error signal detecting apparatus using an electron beam

1992-11-06

1993-12-14

McElheny, Jr., Donald E.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

369101, G11B 910

Patent

active

052709906

ABSTRACT:
A tracking error signal detecting apparatus includes a device for supplying an electron beam, a device for applying the electron beam to a tracking pattern formed on a recording medium, and a device for forming a tracking error signal on the basis of a signal produced from the tracking pattern upon application of the electron beam. An information recording-reproducing apparatus includes an applying device having a plurality of electron ray sources, a device for controlling the driving of the plurality of electron ray sources in response to a signal, a device for directing the electron rays from the electron ray sources to a recording medium, and a device for reproducing information from signals produced upon application of the electron rays to the recording medium.

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IBM Tech. Bulletin, vol. 16, No. 4, Sep. 73; Schneider, "Optical Servo Information on Magnetic Recording Discs".
Recording Characteristics of Si-Mos Target for Electron-Beam Memory, Hideki Andoh et al., Shinku, vol. 26, No. 4, pp. 326-329.

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