JPS5512538A - Detection method for stylus skip - Google Patents

Detection method for stylus skip

Info

Publication number
JPS5512538A
JPS5512538A JP8422878A JP8422878A JPS5512538A JP S5512538 A JPS5512538 A JP S5512538A JP 8422878 A JP8422878 A JP 8422878A JP 8422878 A JP8422878 A JP 8422878A JP S5512538 A JPS5512538 A JP S5512538A
Authority
JP
Japan
Prior art keywords
skip
stylus
groove
recording
group
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
JP8422878A
Other languages
Japanese (ja)
Other versions
JPS611820B2 (en
Inventor
Michiharu Nishihara
Tsutomu Hikita
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP8422878A priority Critical patent/JPS5512538A/en
Publication of JPS5512538A publication Critical patent/JPS5512538A/en
Publication of JPS611820B2 publication Critical patent/JPS611820B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To establish the stylus skip detection method in which continuous stylus skip can be detected with accurate detection, by providing the circuit that the stylus skip detection output can be obtained in response to the relative difference between the groove number read in just now and the groove number read in before.
CONSTITUTION: The group number Nn read out just now from the shift register 6 is stored at the latch, and the difference N with the group number Nn-1 once before stored in the memory 25 is obtained at the subtraction circuit 26. N=1 means normal tracking, N=O is the stylus skip by one groove in opposite direction as the recording, and N=2 is stylus skip by one groove the same direction as the recording. Further, when the locked group is defined that the stylus skip toward opposite to recording direction is continued twice or more, the counter 27 counts with S6, output for count, introduced from the subtraction circuit 26 at N=0, and the count reaches 2 or more, then the locked group detection signal S7 is outputted. Thus, continuous stylus skip can be detected.
COPYRIGHT: (C)1980,JPO&Japio
JP8422878A 1978-07-10 1978-07-10 Detection method for stylus skip Granted JPS5512538A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8422878A JPS5512538A (en) 1978-07-10 1978-07-10 Detection method for stylus skip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8422878A JPS5512538A (en) 1978-07-10 1978-07-10 Detection method for stylus skip

Publications (2)

Publication Number Publication Date
JPS5512538A true JPS5512538A (en) 1980-01-29
JPS611820B2 JPS611820B2 (en) 1986-01-20

Family

ID=13824609

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8422878A Granted JPS5512538A (en) 1978-07-10 1978-07-10 Detection method for stylus skip

Country Status (1)

Country Link
JP (1) JPS5512538A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55113172A (en) * 1979-02-19 1980-09-01 Matsushita Electric Ind Co Ltd Detection system for abnormal reproduction state
JPS57146279U (en) * 1981-03-09 1982-09-14
JPS57197451A (en) * 1982-05-12 1982-12-03 Hitachi Ltd Measuring device for cell fluorescent polarization degree

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55113172A (en) * 1979-02-19 1980-09-01 Matsushita Electric Ind Co Ltd Detection system for abnormal reproduction state
JPS57146279U (en) * 1981-03-09 1982-09-14
JPS57197451A (en) * 1982-05-12 1982-12-03 Hitachi Ltd Measuring device for cell fluorescent polarization degree
JPS608738B2 (en) * 1982-05-12 1985-03-05 株式会社日立製作所 Cell fluorescence polarization measuring device

Also Published As

Publication number Publication date
JPS611820B2 (en) 1986-01-20

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