JPS5766560A - Control signal reproducing device - Google Patents

Control signal reproducing device

Info

Publication number
JPS5766560A
JPS5766560A JP55141699A JP14169980A JPS5766560A JP S5766560 A JPS5766560 A JP S5766560A JP 55141699 A JP55141699 A JP 55141699A JP 14169980 A JP14169980 A JP 14169980A JP S5766560 A JPS5766560 A JP S5766560A
Authority
JP
Japan
Prior art keywords
playback
control signal
low
speed
capacitor
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.)
Granted
Application number
JP55141699A
Other languages
Japanese (ja)
Other versions
JPH0213384B2 (en
Inventor
Masayuki Matsumoto
Masaaki Kobayashi
Atsushi Murase
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP55141699A priority Critical patent/JPS5766560A/en
Publication of JPS5766560A publication Critical patent/JPS5766560A/en
Publication of JPH0213384B2 publication Critical patent/JPH0213384B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/005—Reproducing at a different information rate from the information rate of recording

Abstract

PURPOSE:To generate a control signal with an excellent S/N ratio even when a playback speed is low, by generating a playback control signal by processing the output signal of a magnetic flux response type head through an AC coupled amplifier and a waveform shaping circuit. CONSTITUTION:The playback output voltage of a magnetic flux response head 19 of a magnetic-resistance effect type, etc., is supplied to the capacitor 104 of a coupling stage 23 to eliminate a DC component with corresponds to fluctuations of temperature. A cutoff frequency is adjusted with a time constant determined by the capacitor 104 and a resistance 105 to detect even a low-speed playback output voltage excellent. Further, as the time constant is decreased through a switch 106, the cpacitor 104 is stabilized smoothly during electric power feed. Therefore, a playback control voltage stable even during low-speed reproduction is applied as an amplification output from an amlifier 24 equipped with an AC coupled offset adjusting resistance 108, etc., through a coupling stage 23 to a waveform shaping circuit 26 through an output signal coupling stage 25 equipped with a temperature-characteristic correcting capacitor 112 as well as the cupling stage 23. In this constitution, the playback control signal with an excellent S/N ratio is generated even when a playback speed is low.
JP55141699A 1980-10-08 1980-10-08 Control signal reproducing device Granted JPS5766560A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55141699A JPS5766560A (en) 1980-10-08 1980-10-08 Control signal reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55141699A JPS5766560A (en) 1980-10-08 1980-10-08 Control signal reproducing device

Publications (2)

Publication Number Publication Date
JPS5766560A true JPS5766560A (en) 1982-04-22
JPH0213384B2 JPH0213384B2 (en) 1990-04-04

Family

ID=15298143

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55141699A Granted JPS5766560A (en) 1980-10-08 1980-10-08 Control signal reproducing device

Country Status (1)

Country Link
JP (1) JPS5766560A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5051305A (en) * 1973-09-05 1975-05-08
JPS51124410A (en) * 1975-04-14 1976-10-29 Philips Nv Magnetic reader
JPS5298417U (en) * 1976-01-21 1977-07-25
JPS5558806A (en) * 1978-10-25 1980-05-01 Hitachi Ltd Reproduction system for magnetic recording

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5051305A (en) * 1973-09-05 1975-05-08
JPS51124410A (en) * 1975-04-14 1976-10-29 Philips Nv Magnetic reader
JPS5298417U (en) * 1976-01-21 1977-07-25
JPS5558806A (en) * 1978-10-25 1980-05-01 Hitachi Ltd Reproduction system for magnetic recording

Also Published As

Publication number Publication date
JPH0213384B2 (en) 1990-04-04

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