JPS5698748A - End detector of record player - Google Patents

End detector of record player

Info

Publication number
JPS5698748A
JPS5698748A JP17266779A JP17266779A JPS5698748A JP S5698748 A JPS5698748 A JP S5698748A JP 17266779 A JP17266779 A JP 17266779A JP 17266779 A JP17266779 A JP 17266779A JP S5698748 A JPS5698748 A JP S5698748A
Authority
JP
Japan
Prior art keywords
signal
end detection
counter
data
performs
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
JP17266779A
Other languages
Japanese (ja)
Other versions
JPS645363B2 (en
Inventor
Shuichi Kimura
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP17266779A priority Critical patent/JPS5698748A/en
Publication of JPS5698748A publication Critical patent/JPS5698748A/en
Publication of JPS645363B2 publication Critical patent/JPS645363B2/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
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/14—Control of operating function, e.g. switching from recording to reproducing by sensing movement or position of head, e.g. means moving in correspondence with head movements

Abstract

PURPOSE:To perform accurate detection without influence of an error due to operating characteristics of a photoelectric converting element, etc., by performing end detection through comparing the time, required to count respective edges of a two- phase position detection signal to a prescribed value, with a reference time. CONSTITUTION:A two-phase position detection signal having pulses corresponding to the extent of movement of a tone arm and having phase shift of 90 angles is supplied to counter 2. Counter 2 performs 4N-scale counting operation and of every carrier output signal performs comparing operation in data comparator 3. Data comparator 3 compares time data from a timer with reference time data from reference data generator 5 at every carrier output signal from counter 2 to output end detection speed signal. The end detection speed signal and end detection position signal are ANDed by AND gate circuit 6, which outputs an end detection signal.
JP17266779A 1979-12-31 1979-12-31 End detector of record player Granted JPS5698748A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17266779A JPS5698748A (en) 1979-12-31 1979-12-31 End detector of record player

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17266779A JPS5698748A (en) 1979-12-31 1979-12-31 End detector of record player

Publications (2)

Publication Number Publication Date
JPS5698748A true JPS5698748A (en) 1981-08-08
JPS645363B2 JPS645363B2 (en) 1989-01-30

Family

ID=15946132

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17266779A Granted JPS5698748A (en) 1979-12-31 1979-12-31 End detector of record player

Country Status (1)

Country Link
JP (1) JPS5698748A (en)

Also Published As

Publication number Publication date
JPS645363B2 (en) 1989-01-30

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