JPS5775077A - High-speed picture retrieving device - Google Patents

High-speed picture retrieving device

Info

Publication number
JPS5775077A
JPS5775077A JP55150068A JP15006880A JPS5775077A JP S5775077 A JPS5775077 A JP S5775077A JP 55150068 A JP55150068 A JP 55150068A JP 15006880 A JP15006880 A JP 15006880A JP S5775077 A JPS5775077 A JP S5775077A
Authority
JP
Japan
Prior art keywords
drum motor
speed
phase
amplifier
signal
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
JP55150068A
Other languages
Japanese (ja)
Inventor
Satoshi Uchiumi
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.)
Pioneer Corp
Original Assignee
Pioneer Corp
Pioneer Electronic 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 Pioneer Corp, Pioneer Electronic Corp filed Critical Pioneer Corp
Priority to JP55150068A priority Critical patent/JPS5775077A/en
Publication of JPS5775077A publication Critical patent/JPS5775077A/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
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/46—Controlling, regulating, or indicating speed
    • G11B15/467—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven
    • G11B15/473—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven by controlling the speed of the heads

Abstract

PURPOSE:To prevent the step-out of a monitor television in an optional fast-for- warding speed including the still mode, by controlling automatically the rotation number of a drum to compensate the change of the relative speed accompanied with the change of the tape speed. CONSTITUTION:The frequency signal from a frequency generator 2 which receives the rotation of a drum motor 1 to rotate is converted to a DC voltage by a speed detecting circuit 3 and is applied to the drum motor 1 through an adding point 4 and an amplifier 5 to control the rotation number of the drum motor 1 constantly. A difference between the phase of a reference signal A and that of the phase generator 7 is detected by a phase comparator 8 and is applied to the drum motor 1 through the amplifier 5 to control the phase. At a picture retrieval time, a switch 6 is connected to a contact (b). At this time, the lowering of the level of the RF signal from a head amplifier 11 is detected by a level detecting circuit 12, and a signal indicating tract traverse is counted by a counter, and the speed of the drum motor 1 is controlled by a control voltage corresponding to the count value.
JP55150068A 1980-10-28 1980-10-28 High-speed picture retrieving device Pending JPS5775077A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55150068A JPS5775077A (en) 1980-10-28 1980-10-28 High-speed picture retrieving device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55150068A JPS5775077A (en) 1980-10-28 1980-10-28 High-speed picture retrieving device

Publications (1)

Publication Number Publication Date
JPS5775077A true JPS5775077A (en) 1982-05-11

Family

ID=15488809

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55150068A Pending JPS5775077A (en) 1980-10-28 1980-10-28 High-speed picture retrieving device

Country Status (1)

Country Link
JP (1) JPS5775077A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61230652A (en) * 1985-04-05 1986-10-14 Sony Corp Recording and reproducing device
JPS61199739U (en) * 1985-05-30 1986-12-13

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61230652A (en) * 1985-04-05 1986-10-14 Sony Corp Recording and reproducing device
JPS61199739U (en) * 1985-05-30 1986-12-13

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