JPS56145510A - Readout gain control system - Google Patents

Readout gain control system

Info

Publication number
JPS56145510A
JPS56145510A JP4757380A JP4757380A JPS56145510A JP S56145510 A JPS56145510 A JP S56145510A JP 4757380 A JP4757380 A JP 4757380A JP 4757380 A JP4757380 A JP 4757380A JP S56145510 A JPS56145510 A JP S56145510A
Authority
JP
Japan
Prior art keywords
readout
gain
circuit
data
gate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP4757380A
Other languages
Japanese (ja)
Inventor
Masahiko Shinagawa
Hiromi Matsushige
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NIPPON SHIYUUHENKI KK
Fujitsu Ltd
Hitachi Ltd
Original Assignee
NIPPON SHIYUUHENKI KK
Fujitsu Ltd
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NIPPON SHIYUUHENKI KK, Fujitsu Ltd, Hitachi Ltd filed Critical NIPPON SHIYUUHENKI KK
Priority to JP4757380A priority Critical patent/JPS56145510A/en
Publication of JPS56145510A publication Critical patent/JPS56145510A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor

Landscapes

  • Digital Magnetic Recording (AREA)

Abstract

PURPOSE:To prevent the fluctuation in the level of readout voltage by detecting the level of the readout voltage of the burst signal part which is at the beginning of each data stripe and regulating the gain of the data readout system at every data stripe. CONSTITUTION:A data readout system 7 consists of a readout circuit 6 and a gain circuit 5. The gain circuit 5 changes over the readout gain of the circuit 6 according to the signal from an analog/digital converter 4. The output of the circuit 6 is fed back to the gate 1 side, and while the gate 1 is opened, all the circuits form a feedback loop. Controlling of the read-out gain is accomplished every time when the gate 1 is opened. Namely, at every data stripe on the magnetic tape, the readout gain is readjusted at the readout starting time thereof. Hence, with such constitution, the fluctuation in the level of the readout voltage at every data stripe is prevented.
JP4757380A 1980-04-11 1980-04-11 Readout gain control system Pending JPS56145510A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4757380A JPS56145510A (en) 1980-04-11 1980-04-11 Readout gain control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4757380A JPS56145510A (en) 1980-04-11 1980-04-11 Readout gain control system

Publications (1)

Publication Number Publication Date
JPS56145510A true JPS56145510A (en) 1981-11-12

Family

ID=12778976

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4757380A Pending JPS56145510A (en) 1980-04-11 1980-04-11 Readout gain control system

Country Status (1)

Country Link
JP (1) JPS56145510A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5418514A (en) * 1984-10-12 1995-05-23 Smith; Dayle R. AC current sensor and method of making same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5418514A (en) * 1984-10-12 1995-05-23 Smith; Dayle R. AC current sensor and method of making same

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