JPS5778666A - Tracking state detecting circuit - Google Patents

Tracking state detecting circuit

Info

Publication number
JPS5778666A
JPS5778666A JP55152738A JP15273880A JPS5778666A JP S5778666 A JPS5778666 A JP S5778666A JP 55152738 A JP55152738 A JP 55152738A JP 15273880 A JP15273880 A JP 15273880A JP S5778666 A JPS5778666 A JP S5778666A
Authority
JP
Japan
Prior art keywords
supplied
circuit
noise component
tracking state
pass filter
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
JP55152738A
Other languages
Japanese (ja)
Other versions
JPH0145146B2 (en
Inventor
Nobuyuki Yasuda
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 JP55152738A priority Critical patent/JPS5778666A/en
Publication of JPS5778666A publication Critical patent/JPS5778666A/en
Publication of JPH0145146B2 publication Critical patent/JPH0145146B2/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
    • 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
    • G11B15/1808—Driving of both record carrier and head

Abstract

PURPOSE:To detect a tracking state exactly and easily, by fetching a part on which a data of a transmission signal is not superposed, and detecting a noise contained in this part. CONSTITUTION:A PCM signal applied to an input terminal 1 is supplied to a gate circuit 3 through a buffer circuit 2. The gate circuit 3 is selectively switched by a clamp pulse supplied from an inpt terminal 4, and a pedestal part is fetched to its output side only while the clamp pulse is applied. A noise component superposed on this pedestal part is supplied to a high-pass filter 5, and unless tracking of a VTR exists at an optimum position, the noise component of its output side is also increased. This noise component is supplied to a detecting circuit 8 through a high-pass filter 7 from an amplifying circuit 6, and is supplied to a meter 10 through a level regulator 9. In order to prevent a detection error in case when the PCM signal is not supplied from the input terminal 1, an AGC circuit 11 is provided.
JP55152738A 1980-10-30 1980-10-30 Tracking state detecting circuit Granted JPS5778666A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55152738A JPS5778666A (en) 1980-10-30 1980-10-30 Tracking state detecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55152738A JPS5778666A (en) 1980-10-30 1980-10-30 Tracking state detecting circuit

Publications (2)

Publication Number Publication Date
JPS5778666A true JPS5778666A (en) 1982-05-17
JPH0145146B2 JPH0145146B2 (en) 1989-10-02

Family

ID=15547072

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55152738A Granted JPS5778666A (en) 1980-10-30 1980-10-30 Tracking state detecting circuit

Country Status (1)

Country Link
JP (1) JPS5778666A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5972692A (en) * 1982-10-20 1984-04-24 Canon Inc Controller of picture signal reproducer
JPS60186550U (en) * 1984-05-19 1985-12-10 ソニー株式会社 PCM signal processing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5972692A (en) * 1982-10-20 1984-04-24 Canon Inc Controller of picture signal reproducer
JPS60186550U (en) * 1984-05-19 1985-12-10 ソニー株式会社 PCM signal processing device

Also Published As

Publication number Publication date
JPH0145146B2 (en) 1989-10-02

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