JPS57133569A - Locked group releasing device - Google Patents

Locked group releasing device

Info

Publication number
JPS57133569A
JPS57133569A JP56019782A JP1978281A JPS57133569A JP S57133569 A JPS57133569 A JP S57133569A JP 56019782 A JP56019782 A JP 56019782A JP 1978281 A JP1978281 A JP 1978281A JP S57133569 A JPS57133569 A JP S57133569A
Authority
JP
Japan
Prior art keywords
detecting means
output
speed
given
gate
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
JP56019782A
Other languages
Japanese (ja)
Inventor
Hiroyoshi Hashimoto
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.)
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Sanyo Denki 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 Sanyo Electric Co Ltd, Sanyo Denki Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP56019782A priority Critical patent/JPS57133569A/en
Publication of JPS57133569A publication Critical patent/JPS57133569A/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
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/04—Automatic feed mechanism producing a progressive transducing traverse of the head in a direction which cuts across the direction of travel of the recording medium, e.g. helical scan, e.g. by lead-screw

Abstract

PURPOSE:To improve the response characteristics and to secure a sure release operation, by transferring a pickup case in a speed higher than a constant transfer speed when the output of a detecting means indicating that the kick of a signal groove having an obstruction is required is generated. CONSTITUTION:A detecting means 19 compares the current address number with the address number one field before; and if the difference is minus, the detecting means 19 discriminates the fall into a locked group to output a detection signal. The output of the detecting means 19 and the vertical synchronizing signal from a terminal 17 are given to a gate 24, and the gate 24 outputs a kick pulse at a proper timing in the vertical blanking time. This kick pulse is given to a pickup means 1 to advance a scanning needle by components of one groove. The output of the detecting means 19 is given to a voltage generation source 25 for driving a motor 14 in a high speed, and the motor 14 is driven in the 8-fold speed of the normal speed when the output of the detecting means exists.
JP56019782A 1981-02-12 1981-02-12 Locked group releasing device Pending JPS57133569A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56019782A JPS57133569A (en) 1981-02-12 1981-02-12 Locked group releasing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56019782A JPS57133569A (en) 1981-02-12 1981-02-12 Locked group releasing device

Publications (1)

Publication Number Publication Date
JPS57133569A true JPS57133569A (en) 1982-08-18

Family

ID=12008890

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56019782A Pending JPS57133569A (en) 1981-02-12 1981-02-12 Locked group releasing device

Country Status (1)

Country Link
JP (1) JPS57133569A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60101768A (en) * 1983-10-17 1985-06-05 フィリップス　エレクトロニクス　ネムローゼ　フェンノートシャップ Information reducer
JPS60145568A (en) * 1984-01-06 1985-08-01 Matsushita Electric Ind Co Ltd Digital audio disk reproducing device
JPS63109371U (en) * 1986-12-27 1988-07-14

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60101768A (en) * 1983-10-17 1985-06-05 フィリップス　エレクトロニクス　ネムローゼ　フェンノートシャップ Information reducer
JPS60145568A (en) * 1984-01-06 1985-08-01 Matsushita Electric Ind Co Ltd Digital audio disk reproducing device
JPS63109371U (en) * 1986-12-27 1988-07-14

Similar Documents

Publication Publication Date Title
KR880012086A (en) Clamp Circuit of Solid State Imaging Device
JPS57133569A (en) Locked group releasing device
JPS5527427A (en) Detecting method in arc welding and other
EP0350184A3 (en) Pulse train interruption sensing circuit
JPS55113172A (en) Detection system for abnormal reproduction state
JPS57173562A (en) Ignition device
JPS6093878A (en) Picture reader
KR920020470A (en) Copy protection system
KR970031214A (en) Positioning device
KR930004967A (en) Intermittent / continuous recording automatic switching circuit
SU1669083A2 (en) Method of formation of picture video signal
JPS579656A (en) Feed controller
JPS5589864A (en) Abnormal current detecting circuit in electrostatic recording drive circuit
JPS57207456A (en) Input signal interruption detecting circuit in relay device for digital signal transmission line
JPS55103467A (en) Rotational direction detector for rotor
JPS5758466A (en) Video synchronism detecting system
KR930009374A (en) Vertical Clock Driving Method of Solid-State Imaging Device
JPS54113307A (en) Rotating condition detector
JPS55109074A (en) Facsimile signal transmission system
JPS5485719A (en) Detecting device for improper insertion of original document
JPS57154929A (en) Fault detecting circuit for pulse oscillator
JPH0727352B2 (en) Vertical sync signal inversion circuit
JPS57109447A (en) Optical data transmission system
JPS64576A (en) Detection of life of process unit
SU637906A1 (en) Arrangement for stopping asynchronous run of synchronous generator