JPS57205803A - Dynamic bias control type tape recorder - Google Patents

Dynamic bias control type tape recorder

Info

Publication number
JPS57205803A
JPS57205803A JP9130281A JP9130281A JPS57205803A JP S57205803 A JPS57205803 A JP S57205803A JP 9130281 A JP9130281 A JP 9130281A JP 9130281 A JP9130281 A JP 9130281A JP S57205803 A JPS57205803 A JP S57205803A
Authority
JP
Japan
Prior art keywords
recording
bias
microcomputer
switched
equalizer
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
JP9130281A
Other languages
Japanese (ja)
Inventor
Kenji Takahashi
Hideaki Furuya
Toshiaki Hodohara
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.)
Akai Electric Co Ltd
Original Assignee
Akai Electric Co 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 Akai Electric Co Ltd filed Critical Akai Electric Co Ltd
Priority to JP9130281A priority Critical patent/JPS57205803A/en
Publication of JPS57205803A publication Critical patent/JPS57205803A/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
    • G11B5/027—Analogue recording
    • G11B5/03—Biasing

Abstract

PURPOSE:To expand a dynamic range, by reducing a recording bias quantity and a recording equalized quantity in accordance with a level of a high component of a recording signal, when automatically adjusting a recording bias and an equalizer in accordance with a kind of a tape. CONSTITUTION:When a recording operation is executed in a state that a tape has been installed and changeover switches 6a, 6b have been switched to the side (a), a microcomputer 1 executes autotuning so that a recording bias quantity and a recording equalizer quantity, etc. become an optimum value in accordance with an input of a tape selector. Subsequently, when the changeover switches 6a, 6b are switched to the side (b) before recording an input signal, the microcomputer 1 is switched to a dynamic control operation by the changeover switch 6b, a high band component of the input signal is detected by a high-pass filter 5, is A/D-converted 2, and by the microcomputer 1, a control signal is applied to a bias controlling circuit 3 and an equalizer controlling circuit 4, and said quantity is varied in the direction decreasing from a reference value.
JP9130281A 1981-06-12 1981-06-12 Dynamic bias control type tape recorder Pending JPS57205803A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9130281A JPS57205803A (en) 1981-06-12 1981-06-12 Dynamic bias control type tape recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9130281A JPS57205803A (en) 1981-06-12 1981-06-12 Dynamic bias control type tape recorder

Publications (1)

Publication Number Publication Date
JPS57205803A true JPS57205803A (en) 1982-12-17

Family

ID=14022663

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9130281A Pending JPS57205803A (en) 1981-06-12 1981-06-12 Dynamic bias control type tape recorder

Country Status (1)

Country Link
JP (1) JPS57205803A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5794909A (en) * 1980-12-05 1982-06-12 Hitachi Ltd Magnetic recorder and reproducer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5794909A (en) * 1980-12-05 1982-06-12 Hitachi Ltd Magnetic recorder and reproducer

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