JPS5616947A - Video disc - Google Patents

Video disc

Info

Publication number
JPS5616947A
JPS5616947A JP9031179A JP9031179A JPS5616947A JP S5616947 A JPS5616947 A JP S5616947A JP 9031179 A JP9031179 A JP 9031179A JP 9031179 A JP9031179 A JP 9031179A JP S5616947 A JPS5616947 A JP S5616947A
Authority
JP
Japan
Prior art keywords
stylus
groove
disc
video
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
JP9031179A
Other languages
Japanese (ja)
Inventor
Masamitsu Kawakami
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.)
TDK Corp
Original Assignee
TDK 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 TDK Corp filed Critical TDK Corp
Priority to JP9031179A priority Critical patent/JPS5616947A/en
Publication of JPS5616947A publication Critical patent/JPS5616947A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE: To enable accurate reproduction of tracking signal without being affected with dust, by providing the stylus proove for control signal in parallel with the recording track of video signal.
CONSTITUTION: On the surface of the video disc 1, a number of video tracks 4 are formed in spiral or concentrically. Near this track 4, the same stylus groove 5 as conventional mechanical groove of LP record disc is provided. The contact stylus 7 traces the groove 5 for control and the output is processed with the pickup and amplifier for control signal. Since the stylus groove 5 is used only for the rotary control of discs, the contact stylus 5 is almost not affected with the dirt of disc surface and attachment of dust, accurate tracking of laser light system is made and low cost video disc can be obtained without using expensive automatic control unit.
COPYRIGHT: (C)1981,JPO&Japio
JP9031179A 1979-07-18 1979-07-18 Video disc Pending JPS5616947A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9031179A JPS5616947A (en) 1979-07-18 1979-07-18 Video disc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9031179A JPS5616947A (en) 1979-07-18 1979-07-18 Video disc

Publications (1)

Publication Number Publication Date
JPS5616947A true JPS5616947A (en) 1981-02-18

Family

ID=13994978

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9031179A Pending JPS5616947A (en) 1979-07-18 1979-07-18 Video disc

Country Status (1)

Country Link
JP (1) JPS5616947A (en)

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