JPS55122210A - Magnetic recording and reproducing device - Google Patents

Magnetic recording and reproducing device

Info

Publication number
JPS55122210A
JPS55122210A JP3036079A JP3036079A JPS55122210A JP S55122210 A JPS55122210 A JP S55122210A JP 3036079 A JP3036079 A JP 3036079A JP 3036079 A JP3036079 A JP 3036079A JP S55122210 A JPS55122210 A JP S55122210A
Authority
JP
Japan
Prior art keywords
adjustment
correction
time
memory
stored
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
JP3036079A
Other languages
Japanese (ja)
Inventor
Takuyo Kogure
Hidemasa Kitagawa
Katsuyoshi Fujii
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 JP3036079A priority Critical patent/JPS55122210A/en
Publication of JPS55122210A publication Critical patent/JPS55122210A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To perform accurately automatic adjustment corresponding to the king and the magnetic characteristic of a tape in a short time by performing bias adjustment, frequency characteristic compensation, and recording sensitivity correction simultaneously.
CONSTITUTION: At an adjustment time, switch 13 is switched to the contact b side to record adjustment signals f1 and f2 onto tape 5 through head 4, and simultaneously they are reproduced through head 6. At a bias current correction time, the process of change of the output level corresponding to bias current change is stored in memory blocks 24 and 25, and memory contents are read by the signal from control part 28 consisting of a micro computer, and the maximum value is detected. At a frequency characteristic correction time, frequency characteristic variable block 15 has the characteristic controlled through memory unit 27, and a calculated correction quantity is stored and held. Further, at a memory sensitivity adjustment time, a correction value is stored in memory unit 26, and by the output voltage, variable resistance attenuator 14 is operated to make the signal level fixed.
COPYRIGHT: (C)1980,JPO&Japio
JP3036079A 1979-03-14 1979-03-14 Magnetic recording and reproducing device Pending JPS55122210A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3036079A JPS55122210A (en) 1979-03-14 1979-03-14 Magnetic recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3036079A JPS55122210A (en) 1979-03-14 1979-03-14 Magnetic recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS55122210A true JPS55122210A (en) 1980-09-19

Family

ID=12301686

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3036079A Pending JPS55122210A (en) 1979-03-14 1979-03-14 Magnetic recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS55122210A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5798125A (en) * 1980-12-09 1982-06-18 Sharp Corp Magnetic recorder and reproducer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5798125A (en) * 1980-12-09 1982-06-18 Sharp Corp Magnetic recorder and reproducer

Similar Documents

Publication Publication Date Title
US4220979A (en) Bias level setting circuit for tape recorders with staircase high frequency signal
JPS55122210A (en) Magnetic recording and reproducing device
JPS55160312A (en) Processor for pcm signal
US4912577A (en) Tracking apparatus for VCR
JPS5421316A (en) Magnetic recorder-reproducer
JPS5782210A (en) Gain adjusting circuit of magnetic tape device
JPS5718024A (en) Head height position controller of magnetic recording and reproducing device
JPS5673986A (en) Magnetic recording and rerproducing device
JPS55150105A (en) Magnetic recording and reproducing device
JPS563414A (en) Sound recorder/reproducer
JPS5755530A (en) Head tracking controller
JPS5746366A (en) Information processor
JPS6479903A (en) Magnetic disk device
JPS54155021A (en) Automatic controller for recording sensitivity of magnetic sound recorder reproducer
JPS52122107A (en) Operation control device of magnetic recorder and reproducer
JPS5545131A (en) Magnetic recording and reproducing device
JPS54145511A (en) Method for detecting of recording type and setting of reproduction gain
JPS55139613A (en) Tape recorder
JPS56119907A (en) Recording current adjusting system for magnetic recording and reproducing device
JPS56105307A (en) Magnetic picture recording and reproducing device
JPS5517844A (en) Frequency characteristic automatic adjustment unit of magnetic recorder and reproducing device
JPS5545154A (en) Magnetic recording and reproducing device
JPS56156975A (en) Magnetic recorder
JPS5312314A (en) Signal reading and control system for magnetic recording media
JPS6419556A (en) Optical disk recording and reproducing device