JPS5375773A - Automatic focussing unit - Google Patents

Automatic focussing unit

Info

Publication number
JPS5375773A
JPS5375773A JP15071976A JP15071976A JPS5375773A JP S5375773 A JPS5375773 A JP S5375773A JP 15071976 A JP15071976 A JP 15071976A JP 15071976 A JP15071976 A JP 15071976A JP S5375773 A JPS5375773 A JP S5375773A
Authority
JP
Japan
Prior art keywords
automatic focussing
focussing unit
signal
focussing
unit
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
JP15071976A
Other languages
Japanese (ja)
Inventor
Akira Hirano
Akira Igarashi
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP15071976A priority Critical patent/JPS5375773A/en
Publication of JPS5375773A publication Critical patent/JPS5375773A/en
Pending legal-status Critical Current

Links

Landscapes

  • Automatic Focus Adjustment (AREA)
  • Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
  • Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)

Abstract

PURPOSE: To enable automatic focussing, by picking up the differential signal of video signal, and by regarding the signal as perfect for focussing when it reaches a maximum corresponding to the steep change of chroma.
COPYRIGHT: (C)1978,JPO&Japio
JP15071976A 1976-12-17 1976-12-17 Automatic focussing unit Pending JPS5375773A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15071976A JPS5375773A (en) 1976-12-17 1976-12-17 Automatic focussing unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15071976A JPS5375773A (en) 1976-12-17 1976-12-17 Automatic focussing unit

Publications (1)

Publication Number Publication Date
JPS5375773A true JPS5375773A (en) 1978-07-05

Family

ID=15502901

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15071976A Pending JPS5375773A (en) 1976-12-17 1976-12-17 Automatic focussing unit

Country Status (1)

Country Link
JP (1) JPS5375773A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5555529A (en) * 1978-10-20 1980-04-23 Hitachi Ltd Method of positioning wafer
JPS56500196A (en) * 1979-02-14 1981-02-19
JPS59121932A (en) * 1982-12-28 1984-07-14 Fujitsu Ltd Automatic focusing control unit
JPS6063929A (en) * 1984-07-04 1985-04-12 Hitachi Ltd Optical processor for plate object

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5555529A (en) * 1978-10-20 1980-04-23 Hitachi Ltd Method of positioning wafer
JPS6259457B2 (en) * 1978-10-20 1987-12-11 Hitachi Ltd
JPS56500196A (en) * 1979-02-14 1981-02-19
JPS59121932A (en) * 1982-12-28 1984-07-14 Fujitsu Ltd Automatic focusing control unit
JPS6355859B2 (en) * 1982-12-28 1988-11-04 Fujitsu Ltd
JPS6063929A (en) * 1984-07-04 1985-04-12 Hitachi Ltd Optical processor for plate object

Similar Documents

Publication Publication Date Title
JPS5375773A (en) Automatic focussing unit
JPS53104084A (en) Differential minor type governor
JPS53128958A (en) Inclined variable equalizer
JPS53143125A (en) Color control unit for color television receiver
JPS5351924A (en) Video input unit
JPS5350923A (en) Color solid state pickup device
JPS5328332A (en) Television set
JPS5370625A (en) Solid state pick up element for color television camera
JPS5227314A (en) Record reproduction unit
JPS52146119A (en) Video information extracting unit
JPS5390721A (en) Solid pickup element
JPS5335425A (en) Color pick up unit
JPS5274175A (en) Dust collector
JPS52132722A (en) Solid state pick up unit
JPS5299018A (en) Color pick up device
JPS5423421A (en) Video signal compound system
JPS5342620A (en) Drop-out compensator circuit
JPS53149723A (en) Color television receiver of beam-index type
JPS51144124A (en) Index type color television set
JPS52145016A (en) Automatic recording device
JPS5320A (en) Optical information reproducer
JPS5255509A (en) Video signal record reprodusor
JPS5412354A (en) Cyclohexyldichlorosilane
JPS5414954A (en) 1-cyanotricylco(4,3,1,12,5)undecane
JPS53138233A (en) Forming device for automatic color level adjustment signal