JPS57130176A - Information retrieving device - Google Patents

Information retrieving device

Info

Publication number
JPS57130176A
JPS57130176A JP56014518A JP1451881A JPS57130176A JP S57130176 A JPS57130176 A JP S57130176A JP 56014518 A JP56014518 A JP 56014518A JP 1451881 A JP1451881 A JP 1451881A JP S57130176 A JPS57130176 A JP S57130176A
Authority
JP
Japan
Prior art keywords
mark
film
circuit
signal
detection
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
JP56014518A
Other languages
Japanese (ja)
Inventor
Hitoshi Yanagawa
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP56014518A priority Critical patent/JPS57130176A/en
Publication of JPS57130176A publication Critical patent/JPS57130176A/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

Abstract

PURPOSE:To stop a film when the film is fed by the 1/4 length of a mark of the film after detection of the mark, by a pair of mark detectors arranged at the intervals of the about half of the mark in the direction of mark movement. CONSTITUTION:A mark 16 of each frame 15 on a film F is illuminated by a lamp 17; and when the optical signal is detected by a pair of mark detectors 12 and 13 simultaneously, the output signal of a gate 25 is counted as a mark signal by a counting circuit 22, and a control signal is outputted from a comparator 23 when the difference between a frame number A of a storage circuit 21 and a count value B of the circuit 22 becomes 1. The mark detected after the generation of the control signal is the mark of a desired frame. Next, when the film is moved by the half of a film quantity which is moved during the time from the mark detection of the detector 12 to the mark detection of the detector 13, the count value of a counter 30 and the division value of a dividing circuit 31 coincide with each other, and the film is stopped by the signal from a comparing circuit 32.
JP56014518A 1981-02-03 1981-02-03 Information retrieving device Pending JPS57130176A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56014518A JPS57130176A (en) 1981-02-03 1981-02-03 Information retrieving device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56014518A JPS57130176A (en) 1981-02-03 1981-02-03 Information retrieving device

Publications (1)

Publication Number Publication Date
JPS57130176A true JPS57130176A (en) 1982-08-12

Family

ID=11863310

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56014518A Pending JPS57130176A (en) 1981-02-03 1981-02-03 Information retrieving device

Country Status (1)

Country Link
JP (1) JPS57130176A (en)

Similar Documents

Publication Publication Date Title
JPS57157118A (en) Photoelectric type displacement detecting device
JPS57130176A (en) Information retrieving device
JPS539104A (en) Cassette tape running speed detector
JPS5351737A (en) Film sensitivity presetting system for exposure condition determining circuit
JPS5269633A (en) Detector for absence of paper
JPS5699354A (en) Image recorder
JPS56108167A (en) Information retrieving device
FR2419549A1 (en) Automatic counter for objects moving along given path - uses three opto-electrical detectors arranged in line along path
SE8201896L (en) synchronization circuit
JPS5713380A (en) Discriminating circuit for radiation detecting signal
JPS5437790A (en) Speed detector
JPS5323657A (en) High precision length measurilng system o f filament materials
JPS5418784A (en) Discontinuity detector of period double pulses
JPS5769471A (en) Information retrieval device
JPS57178162A (en) Speed detecting method
JPS5313477A (en) Operating time measuring system for mechanism
JPS55151666A (en) Life detector of consumables in developing device
JPS5226211A (en) Time counting signal device
SU577408A1 (en) Instrument for determining errow of optoelectronic indicating device in flowmeters
JPS576475A (en) Tape running position detecting device
JPS57104922A (en) Detecting and deciding method of different-size negative film
JPS57200979A (en) Microprocessor for counter
JPS54106226A (en) Information locator
JPS55113169A (en) Record size detector
JPS52117655A (en) Multiplex material detector