JPS53114456A - Sizing system of optical beam scanning type - Google Patents

Sizing system of optical beam scanning type

Info

Publication number
JPS53114456A
JPS53114456A JP2798277A JP2798277A JPS53114456A JP S53114456 A JPS53114456 A JP S53114456A JP 2798277 A JP2798277 A JP 2798277A JP 2798277 A JP2798277 A JP 2798277A JP S53114456 A JPS53114456 A JP S53114456A
Authority
JP
Japan
Prior art keywords
optical beam
beam scanning
scanning type
sizing system
differential operation
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
JP2798277A
Other languages
Japanese (ja)
Inventor
Noriaki Honma
Katsumi Takami
Chiaki Shinpo
Kazuo Shigematsu
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2798277A priority Critical patent/JPS53114456A/en
Publication of JPS53114456A publication Critical patent/JPS53114456A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To improve the measuring accuracy without any influence upon the size measurement even if there is any fluctuation in the light source or the background light by subjecting the output signals of a photoelectric converter to secondary differential operation and by measuring the distance between the inflection points of the pulses following the secondary differential operation.
COPYRIGHT: (C)1978,JPO&Japio
JP2798277A 1977-03-16 1977-03-16 Sizing system of optical beam scanning type Pending JPS53114456A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2798277A JPS53114456A (en) 1977-03-16 1977-03-16 Sizing system of optical beam scanning type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2798277A JPS53114456A (en) 1977-03-16 1977-03-16 Sizing system of optical beam scanning type

Publications (1)

Publication Number Publication Date
JPS53114456A true JPS53114456A (en) 1978-10-05

Family

ID=12236048

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2798277A Pending JPS53114456A (en) 1977-03-16 1977-03-16 Sizing system of optical beam scanning type

Country Status (1)

Country Link
JP (1) JPS53114456A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63175215A (en) * 1987-01-14 1988-07-19 Matsushita Electric Ind Co Ltd Method for recognizing gap position of magnetic tape reading head

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63175215A (en) * 1987-01-14 1988-07-19 Matsushita Electric Ind Co Ltd Method for recognizing gap position of magnetic tape reading head

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