JPS57167181A - Signal read position detecting device - Google Patents

Signal read position detecting device

Info

Publication number
JPS57167181A
JPS57167181A JP5159881A JP5159881A JPS57167181A JP S57167181 A JPS57167181 A JP S57167181A JP 5159881 A JP5159881 A JP 5159881A JP 5159881 A JP5159881 A JP 5159881A JP S57167181 A JPS57167181 A JP S57167181A
Authority
JP
Japan
Prior art keywords
signal
recording medium
generating
pickup means
frequency
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
JP5159881A
Other languages
Japanese (ja)
Inventor
Chiaki Nonaka
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 JP5159881A priority Critical patent/JPS57167181A/en
Publication of JPS57167181A publication Critical patent/JPS57167181A/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
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/11—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier
    • G11B27/13—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier the information being derived from movement of the record carrier, e.g. using tachometer
    • G11B27/17—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier the information being derived from movement of the record carrier, e.g. using tachometer using electrical sensing means
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers

Landscapes

  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
  • Moving Of Head For Track Selection And Changing (AREA)

Abstract

PURPOSE:To exactly detect a signal read position in a signal reproducing device of a constant linear velocity system, by generating a signal of frequency corresponding to rotational frequency of a recording medium, and generating the voltage corresponding to the frequency of this signal. CONSTITUTION:A pickup means 4 is opposed to a recording track position of a recording medium 1 on which a spiral recording track has been formed, and a signal recorded in a recording track is read by the pickup means 4 by rotating the recording medium 1 so that a tangential speed of the recording track is kept constant at any position of the pickup means 4. Such a signal reproducing device is provided with a means 9 for generating an output signal having frequency corresponding to the rotational frequency of the recording medium 1, and a means 10 for generating the voltage corresponding to a period of its output signal, so that a position of the pickup means 4 against the recording medium 1 can be detected in accordance with said voltage.
JP5159881A 1981-04-06 1981-04-06 Signal read position detecting device Pending JPS57167181A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5159881A JPS57167181A (en) 1981-04-06 1981-04-06 Signal read position detecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5159881A JPS57167181A (en) 1981-04-06 1981-04-06 Signal read position detecting device

Publications (1)

Publication Number Publication Date
JPS57167181A true JPS57167181A (en) 1982-10-14

Family

ID=12891337

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5159881A Pending JPS57167181A (en) 1981-04-06 1981-04-06 Signal read position detecting device

Country Status (1)

Country Link
JP (1) JPS57167181A (en)

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