JPS57182278A - Microfilm readout system - Google Patents

Microfilm readout system

Info

Publication number
JPS57182278A
JPS57182278A JP56063944A JP6394481A JPS57182278A JP S57182278 A JPS57182278 A JP S57182278A JP 56063944 A JP56063944 A JP 56063944A JP 6394481 A JP6394481 A JP 6394481A JP S57182278 A JPS57182278 A JP S57182278A
Authority
JP
Japan
Prior art keywords
key word
picture
characteristic number
microfilm
collated
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
JP56063944A
Other languages
Japanese (ja)
Inventor
Takashi Tanabe
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 JP56063944A priority Critical patent/JPS57182278A/en
Publication of JPS57182278A publication Critical patent/JPS57182278A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
    • G06K17/0016—Selecting or retrieving of images by means of their associated code-marks, e.g. coded microfilm or microfiche
    • G06K17/0019—Selecting or retrieving of images by means of their associated code-marks, e.g. coded microfilm or microfiche for images on filmstrips

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Abstract

PURPOSE:To protect secret information carried on a film by reading a picture only when a key word stored when a detected discrimination smybol coincides with memory contents is inputted. CONSTITUTION:A characteristic number and a key word which correspond to a secret picture are registered. When a characteristic number and a key word are inputted at an input part 13, the characteristic number is stored temporarily in a buffer part 14. A control part 16 collates the read characteristic number with that registered previously in a correspondence table part 15 and when the both coincide with each other, the key word is collated similarly. When the key word is coincident, motors 6 and 7 are driven to project prescribed picture data on a screen 12. When the collated key word is not coincident, reading operation is not performed and said projection on the picture is not performed. Thus, the reading operation is restricted to protect secret information carried on a microfilm.
JP56063944A 1981-04-30 1981-04-30 Microfilm readout system Pending JPS57182278A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56063944A JPS57182278A (en) 1981-04-30 1981-04-30 Microfilm readout system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56063944A JPS57182278A (en) 1981-04-30 1981-04-30 Microfilm readout system

Publications (1)

Publication Number Publication Date
JPS57182278A true JPS57182278A (en) 1982-11-10

Family

ID=13243958

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56063944A Pending JPS57182278A (en) 1981-04-30 1981-04-30 Microfilm readout system

Country Status (1)

Country Link
JP (1) JPS57182278A (en)

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