Dynamic magnetic information storage or retrieval – Monitoring or testing the progress of recording
Patent
1982-01-25
1985-03-12
Psitos, Aristotelis M.
Dynamic magnetic information storage or retrieval
Monitoring or testing the progress of recording
324210, 360137, G11B 2736, G01R 3312
Patent
active
045048711
ABSTRACT:
A test fixture apparatus for testing drives of magnetic recording media; the apparatus being adapted to simulate magnetic media for insertion within a magnetic recording drive. The test fixture apparatus includes a structure formed with exterior dimensions approximating those of the magnetic media; one or more conductors positioned to be in close proximity to the gap or gaps of the magnetic recording head within the drive when the test fixture apparatus is inserted; signal detection and driver circuitry to drive the conductor or conductors in order to simulate readback flux reversals and to check write characteristics of the drive; and means to simulate index pulses for flexible disk applications. A magnetic data cartridge application is also included as an alternative embodiment.
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patent: 3962724 (1976-06-01), Koizumi
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New Test Tape for Magnetic Recorders; Konnis, Tele-Tech & Electronic Industries, Apr. 1954, pp. 88-89.
Automated Multiple Head Disk Testing Machine; Fletcher et al., IBM Disclosure Bulletin, vol. 22, No. 3, Aug. 1979.
Read/Write Head Test; Buckthal, IBM Technical Disclosure Bulletin, vol. 17, No. 1, p. 39, Jun. 1974.
Cartridge for Testing Magnetic Recording Disks, Fletcher and Whitted, IBM Technical Disclosure Bulletin, vol. 22, No. 3.
Test Disk and Process for Checking Magnetic Heads; Holloway, IBM Technical Disclosure Bulletin, vol. 21, No. 9, Feb. 1979.
Measurement of Frequency Response of Magnetic Transducers; Shidler, IBM Technical Disclosure Bulletin, vol. 18, No. 9, Feb. 1976.
Berwick James D.
Lam Kyle T.
Psitos Aristotelis M.
Schatzel Thomas E.
Verbatim Corporation
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