JPS6489681A - Magnetic recording/reproducing device - Google Patents

Magnetic recording/reproducing device

Info

Publication number
JPS6489681A
JPS6489681A JP62243712A JP24371287A JPS6489681A JP S6489681 A JPS6489681 A JP S6489681A JP 62243712 A JP62243712 A JP 62243712A JP 24371287 A JP24371287 A JP 24371287A JP S6489681 A JPS6489681 A JP S6489681A
Authority
JP
Japan
Prior art keywords
recording
amplifier
lpf
circuit
band mode
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
JP62243712A
Other languages
Japanese (ja)
Inventor
Katsuyuki Watanabe
Atsushi Yoshioka
Fumihiko Yamanushi
Michio Masuda
Tomomitsu Azeyanagi
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.)
Hitachi Ltd
Original Assignee
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP62243712A priority Critical patent/JPS6489681A/en
Publication of JPS6489681A publication Critical patent/JPS6489681A/en
Pending legal-status Critical Current

Links

Landscapes

  • Television Signal Processing For Recording (AREA)

Abstract

PURPOSE:To expand a dynamic range and to reduce the distortion of a recording current at the time of a high band mode by constituting a recording amplifier of a constant current amplifier. CONSTITUTION:The recording system of a video signal consists of a low pass filter(LPF) 2, an AGC circuit 3, a clamp circuit 4, a pre-emphasis circuit 5, a clipping level set circuit 6, an FM modulator 7, a lag lead LPF 8, the recording amplifier 9 and a magnetic head 10. The recording amplifier 9 is constituted of the constant current amplifier, and the lag lead LPF 8 in the preceding stage of it is switched at a low band mode and the high band mode.
JP62243712A 1987-09-30 1987-09-30 Magnetic recording/reproducing device Pending JPS6489681A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62243712A JPS6489681A (en) 1987-09-30 1987-09-30 Magnetic recording/reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62243712A JPS6489681A (en) 1987-09-30 1987-09-30 Magnetic recording/reproducing device

Publications (1)

Publication Number Publication Date
JPS6489681A true JPS6489681A (en) 1989-04-04

Family

ID=17107863

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62243712A Pending JPS6489681A (en) 1987-09-30 1987-09-30 Magnetic recording/reproducing device

Country Status (1)

Country Link
JP (1) JPS6489681A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3924987A1 (en) * 1989-07-28 1991-01-31 Broadcast Television Syst Recording video signal with improved noise separation - using bridged T filter between frequency modulator output and current amplifier with linear characteristic

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3924987A1 (en) * 1989-07-28 1991-01-31 Broadcast Television Syst Recording video signal with improved noise separation - using bridged T filter between frequency modulator output and current amplifier with linear characteristic

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