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JPS5667410A - Stationary servo-device - Google Patents

Stationary servo-device

Info

Publication number
JPS5667410A
JPS5667410A JP14296779A JP14296779A JPS5667410A JP S5667410 A JPS5667410 A JP S5667410A JP 14296779 A JP14296779 A JP 14296779A JP 14296779 A JP14296779 A JP 14296779A JP S5667410 A JPS5667410 A JP S5667410A
Authority
JP
Japan
Prior art keywords
range
value
servo
counter
gate
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
JP14296779A
Other languages
Japanese (ja)
Inventor
Minoru Takakura
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 JP14296779A priority Critical patent/JPS5667410A/en
Publication of JPS5667410A publication Critical patent/JPS5667410A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Position Or Direction (AREA)
  • Stopping Of Electric Motors (AREA)

Abstract

PURPOSE: To prevent step-out of the servo-system, by making an output of the D/A converter constant except the range where the counting value becomes the maximum value through the minimum value, containing the value according to the objective value, in the stationary servo-device which is used for the record reproducing apparatus of VTR, etc.
CONSTITUTION: The AND gate 17 sets FF19 when the counting value of the counter 2 has become 11...1 within the range where a window signal occurs. Also, the AND gate 18 resets FF19 when the counting value has become 00...0 within said range. As a result, an output of the D/A converter 5 is varied only within this range, and it becomes constant at a high level or a low level except said range. Accordingly, even when the counter 2 of a few bits is used, step-out of the servo- system can be prevented.
COPYRIGHT: (C)1981,JPO&Japio
JP14296779A 1979-11-05 1979-11-05 Stationary servo-device Pending JPS5667410A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14296779A JPS5667410A (en) 1979-11-05 1979-11-05 Stationary servo-device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14296779A JPS5667410A (en) 1979-11-05 1979-11-05 Stationary servo-device

Publications (1)

Publication Number Publication Date
JPS5667410A true JPS5667410A (en) 1981-06-06

Family

ID=15327815

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14296779A Pending JPS5667410A (en) 1979-11-05 1979-11-05 Stationary servo-device

Country Status (1)

Country Link
JP (1) JPS5667410A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS619186A (en) * 1984-06-20 1986-01-16 Hitachi Ltd Controlle for motor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4965472A (en) * 1972-10-31 1974-06-25
JPS5139379A (en) * 1974-09-30 1976-04-01 Hitachi Ltd Deijitarusaabokeino fuiidobatsukushingohatsuseikairo

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4965472A (en) * 1972-10-31 1974-06-25
JPS5139379A (en) * 1974-09-30 1976-04-01 Hitachi Ltd Deijitarusaabokeino fuiidobatsukushingohatsuseikairo

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS619186A (en) * 1984-06-20 1986-01-16 Hitachi Ltd Controlle for motor
JPH0344514B2 (en) * 1984-06-20 1991-07-08 Hitachi Seisakusho Kk

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