JPS54100705A - Servo control mechanism for tape recorder - Google Patents

Servo control mechanism for tape recorder

Info

Publication number
JPS54100705A
JPS54100705A JP685678A JP685678A JPS54100705A JP S54100705 A JPS54100705 A JP S54100705A JP 685678 A JP685678 A JP 685678A JP 685678 A JP685678 A JP 685678A JP S54100705 A JPS54100705 A JP S54100705A
Authority
JP
Japan
Prior art keywords
tape
speed
control mechanism
servo control
tape recorder
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
JP685678A
Other languages
Japanese (ja)
Inventor
Shigeru Yamada
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP685678A priority Critical patent/JPS54100705A/en
Publication of JPS54100705A publication Critical patent/JPS54100705A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To reduce the thickness and weight of a capstan motor and to improve the stability in a tape speed by detecting the tape speed in an optical manner.
CONSTITUTION: A light emitting device 1 and a light receiving device 2 interposed inbetween a magnetic tape 3, and the light from the device 1 passes through the equidistantly spaced holes 4 of the tape 3 and is detected by the device 2 so that pulses of a frequency proportional to the tape speed are generated and compared at 9 with reference signals. The speed of a capstan motor 7 is controlled in accordance with the differential signals.
COPYRIGHT: (C)1979,JPO&Japio
JP685678A 1978-01-25 1978-01-25 Servo control mechanism for tape recorder Pending JPS54100705A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP685678A JPS54100705A (en) 1978-01-25 1978-01-25 Servo control mechanism for tape recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP685678A JPS54100705A (en) 1978-01-25 1978-01-25 Servo control mechanism for tape recorder

Publications (1)

Publication Number Publication Date
JPS54100705A true JPS54100705A (en) 1979-08-08

Family

ID=11649865

Family Applications (1)

Application Number Title Priority Date Filing Date
JP685678A Pending JPS54100705A (en) 1978-01-25 1978-01-25 Servo control mechanism for tape recorder

Country Status (1)

Country Link
JP (1) JPS54100705A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06346582A (en) * 1993-06-08 1994-12-20 Hitachi Electron Service Co Ltd Conductivity maintenance method between free access floor board and supporting leg

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06346582A (en) * 1993-06-08 1994-12-20 Hitachi Electron Service Co Ltd Conductivity maintenance method between free access floor board and supporting leg

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