JPS562064A - Information retrieval unit - Google Patents

Information retrieval unit

Info

Publication number
JPS562064A
JPS562064A JP7688779A JP7688779A JPS562064A JP S562064 A JPS562064 A JP S562064A JP 7688779 A JP7688779 A JP 7688779A JP 7688779 A JP7688779 A JP 7688779A JP S562064 A JPS562064 A JP S562064A
Authority
JP
Japan
Prior art keywords
mark
frame
screen
projection
raw
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
JP7688779A
Other languages
Japanese (ja)
Inventor
Tadashi Kikuchi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP7688779A priority Critical patent/JPS562064A/en
Publication of JPS562064A publication Critical patent/JPS562064A/en
Pending legal-status Critical Current

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Landscapes

  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Abstract

PURPOSE: To make it possible to eliminate completely the need for manual fine- adjusting operation by projecting a frame at a screen reference position with accuracy at any time by fitting a photodetecting element for frame retrieval mark detection at the projection position of a frame retrieval mark.
CONSTITUTION: Photodetecting elements 9 (9a and 9b) such as photodiodes and phototransistors are provided. The elements 9a and 9b have mechanisms that detect H mark 12 and V mark 13 recorded for counting column-directional and raw-directional marks of a frame and for positioning in the mark. Further, the unit consists of light source 1, condenser lens 2, fiche film mount 3, H and V liners 4 and 5 moving a fiche film in the column and raw directions respectively, projecting lens 6, reflex mirror 7, screen 8, etc. The installation position of element 9a should be on a line where the projected image of H mark 12 moves and the projection position of H mark 12 projected simultaneously with and corresponding to the projection of frame 11 on reference position B on screen 8.
COPYRIGHT: (C)1981,JPO&Japio
JP7688779A 1979-06-20 1979-06-20 Information retrieval unit Pending JPS562064A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7688779A JPS562064A (en) 1979-06-20 1979-06-20 Information retrieval unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7688779A JPS562064A (en) 1979-06-20 1979-06-20 Information retrieval unit

Publications (1)

Publication Number Publication Date
JPS562064A true JPS562064A (en) 1981-01-10

Family

ID=13618139

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7688779A Pending JPS562064A (en) 1979-06-20 1979-06-20 Information retrieval unit

Country Status (1)

Country Link
JP (1) JPS562064A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4882851A (en) * 1972-02-04 1973-11-06
JPS515330B1 (en) * 1970-10-01 1976-02-19
JPS5155620A (en) * 1974-11-11 1976-05-15 Hitachi Ltd Chomaikurofuirumuno eizozureshuseiho

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS515330B1 (en) * 1970-10-01 1976-02-19
JPS4882851A (en) * 1972-02-04 1973-11-06
JPS5155620A (en) * 1974-11-11 1976-05-15 Hitachi Ltd Chomaikurofuirumuno eizozureshuseiho

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