JPH01165058A - Automatic tracking controller for magnetic recording and reproducing device - Google Patents

Automatic tracking controller for magnetic recording and reproducing device

Info

Publication number
JPH01165058A
JPH01165058A JP62324768A JP32476887A JPH01165058A JP H01165058 A JPH01165058 A JP H01165058A JP 62324768 A JP62324768 A JP 62324768A JP 32476887 A JP32476887 A JP 32476887A JP H01165058 A JPH01165058 A JP H01165058A
Authority
JP
Japan
Prior art keywords
signal
circuit
head
control
time
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
JP62324768A
Other languages
Japanese (ja)
Other versions
JPH0664794B2 (en
Inventor
Takashi Mishima
Yutaka Suzuki
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP62324768A priority Critical patent/JPH0664794B2/en
Publication of JPH01165058A publication Critical patent/JPH01165058A/en
Publication of JPH0664794B2 publication Critical patent/JPH0664794B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE: To execute a tracking control for driving a tracking value to a best point in a short time and to reproduce a picture good in S/N by detecting the level of a reproduced signal at every 2×N (N≥1) rotation of a rotating head.
CONSTITUTION: At the time of starting a reproduction, the reproduced signal detected by the rotary heads 2, 3 in a head amplifying circuit 13 is amplified, detected, converted to a digital signal by an A/D converting circuit 15 and inputted to a microcomputer 16. At this time, a timing for detecting the digital signal once for every 2×N rotation of the rotating heads 2, 3. The microcomputer 16 inputs a tracking control pulse signal to a servo circuit 12 by a reference formed in a 1/2 frequency dividing vertical reference generating circuit 17. The servo circuit 12 outputs a speed control signal and a phase control signal to a capstan motor 9 and a drum motor 4 to control a speed and a phase. In a tape recorded by the four rotary heads, a detection is executed by the head having no mounting error nor the difference of an electromagnetic converting efficiency to reproduce the screen good in the S/N.
COPYRIGHT: (C)1989,JPO&Japio
JP62324768A 1987-12-21 1987-12-21 Automatic tracking controller for magnetic recording / reproducing apparatus Expired - Lifetime JPH0664794B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62324768A JPH0664794B2 (en) 1987-12-21 1987-12-21 Automatic tracking controller for magnetic recording / reproducing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62324768A JPH0664794B2 (en) 1987-12-21 1987-12-21 Automatic tracking controller for magnetic recording / reproducing apparatus

Publications (2)

Publication Number Publication Date
JPH01165058A true JPH01165058A (en) 1989-06-29
JPH0664794B2 JPH0664794B2 (en) 1994-08-22

Family

ID=18169458

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62324768A Expired - Lifetime JPH0664794B2 (en) 1987-12-21 1987-12-21 Automatic tracking controller for magnetic recording / reproducing apparatus

Country Status (1)

Country Link
JP (1) JPH0664794B2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51135510A (en) * 1975-05-19 1976-11-24 Matsushita Electric Ind Co Ltd Tracking control method for magnetic recording reproduction device
JPS5764325A (en) * 1980-09-30 1982-04-19 Sony Corp Automatic tracking device of video tape recorder
JPS581843A (en) * 1981-06-26 1983-01-07 Hitachi Ltd Automatic tracking device of vtr
JPS59217256A (en) * 1983-05-24 1984-12-07 Victor Co Of Japan Ltd Recording and reproducing device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51135510A (en) * 1975-05-19 1976-11-24 Matsushita Electric Ind Co Ltd Tracking control method for magnetic recording reproduction device
JPS5764325A (en) * 1980-09-30 1982-04-19 Sony Corp Automatic tracking device of video tape recorder
JPS581843A (en) * 1981-06-26 1983-01-07 Hitachi Ltd Automatic tracking device of vtr
JPS59217256A (en) * 1983-05-24 1984-12-07 Victor Co Of Japan Ltd Recording and reproducing device

Also Published As

Publication number Publication date
JPH0664794B2 (en) 1994-08-22

Similar Documents

Publication Publication Date Title
JPS6273885A (en) Special reproducing device for video tape recorder
JPS56140541A (en) Magnetic tape driving device
JPS58161586A (en) Magnetic recording and reproducing device
JPS61177662A (en) Drum servo circuit of information signal reproducing device
JPH01165058A (en) Automatic tracking controller for magnetic recording and reproducing device
JPS6116075A (en) Tracking device for rotary magnetic recording medium
JPS60254972A (en) Control system for slow reproducing operation of magnetic recording and reproducing device
JPS5528547A (en) Magnetic recorder/reproducer
JPS59116907A (en) Automatic setting method of recording level
JPH05174456A (en) Recording and reproducing device
JPH03245302A (en) Magnetic recording and reproducing device
JPH01184747A (en) Tracking controller for magnetic recording and reproducing device
JPS62200988A (en) Electronic still camera
JPH02292770A (en) Video signal reproducing device
JPS5680821A (en) Generating system for automatic tracking control signal of vtr
JPH02139775A (en) Tracking device for rotational recording body
JPH01184748A (en) Auto-tracking controller for magnetic recording and reproducing device
JPH02312048A (en) Rotating head type reproducing device
JPS6439655A (en) Tracking controller for magnetic recording and reproducing device
JPS58175160A (en) Magnetic picture recording and reproducing device
JPS6361465A (en) Magnetic recording and reproducing device
JPH03162754A (en) Magnetic recording and reproducing device
JPS6163953A (en) Control system for capstan motor of vtr
JPS63187461A (en) Spindle servo equipment in information recoding disk reproducing device
JPS61177666A (en) Tape speed servo device

Legal Events

Date Code Title Description
FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20070822

Year of fee payment: 13

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080822

Year of fee payment: 14

EXPY Cancellation because of completion of term
FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080822

Year of fee payment: 14