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JPS5446428A - Controller for correction of read position of medium - Google Patents

Controller for correction of read position of medium

Info

Publication number
JPS5446428A
JPS5446428A JP11365077A JP11365077A JPS5446428A JP S5446428 A JPS5446428 A JP S5446428A JP 11365077 A JP11365077 A JP 11365077A JP 11365077 A JP11365077 A JP 11365077A JP S5446428 A JPS5446428 A JP S5446428A
Authority
JP
Japan
Prior art keywords
medium
step motor
outputs
deviation
external edge
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
JP11365077A
Other languages
Japanese (ja)
Inventor
Itaru Fukushima
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP11365077A priority Critical patent/JPS5446428A/en
Publication of JPS5446428A publication Critical patent/JPS5446428A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To realize stable read driving ehich follows up automarically, by calculating the dirrerence between a photo array and external edge of a medium and by rotating a step motor by a driving pulse proportional to the difference.
CONSTITUTION: Photo arrays 107, 108 and 111 function to observe the amount of deviation along the feeding direction of the external edge part of medium 1 parallel to the feeding direction of medium 1 fed from the medium-mounting part, and their outputs are stored in shift registers 305 and 306. Then, the parallel outputs of registers 305 and 306 are inputted to micro-processor 314, thereby calculating the deviation between arrays 107 and 108, and the external edge part of the medium. Next, processor 314 outputs driving pulse 316 proportional to the deviation to step motor driving circuit 315, so that step motor 102 will be driven corresponding to rotating-direction indication signal 317. Consequently, stable read can be realized which follows up automatically
COPYRIGHT: (C)1979,JPO&Japio
JP11365077A 1977-09-20 1977-09-20 Controller for correction of read position of medium Pending JPS5446428A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11365077A JPS5446428A (en) 1977-09-20 1977-09-20 Controller for correction of read position of medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11365077A JPS5446428A (en) 1977-09-20 1977-09-20 Controller for correction of read position of medium

Publications (1)

Publication Number Publication Date
JPS5446428A true JPS5446428A (en) 1979-04-12

Family

ID=14617632

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11365077A Pending JPS5446428A (en) 1977-09-20 1977-09-20 Controller for correction of read position of medium

Country Status (1)

Country Link
JP (1) JPS5446428A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986000159A1 (en) * 1984-06-15 1986-01-03 Sony Corporation Optical card reader
JPS6167184A (en) * 1984-09-10 1986-04-07 Hitachi Ltd Card recorded information reading device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986000159A1 (en) * 1984-06-15 1986-01-03 Sony Corporation Optical card reader
JPS6167184A (en) * 1984-09-10 1986-04-07 Hitachi Ltd Card recorded information reading device

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