JPS6433537A - Perforation counter - Google Patents

Perforation counter

Info

Publication number
JPS6433537A
JPS6433537A JP18938987A JP18938987A JPS6433537A JP S6433537 A JPS6433537 A JP S6433537A JP 18938987 A JP18938987 A JP 18938987A JP 18938987 A JP18938987 A JP 18938987A JP S6433537 A JPS6433537 A JP S6433537A
Authority
JP
Japan
Prior art keywords
perforation
photoelectric signal
signal
generated
pulse
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.)
Granted
Application number
JP18938987A
Other languages
Japanese (ja)
Other versions
JPH083601B2 (en
Inventor
Shigekane Gotou
Fumio Iwai
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.)
Fujinon Corp
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co Ltd
Fuji Photo Optical Co 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 Fuji Photo Film Co Ltd, Fuji Photo Optical Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP62189389A priority Critical patent/JPH083601B2/en
Publication of JPS6433537A publication Critical patent/JPS6433537A/en
Publication of JPH083601B2 publication Critical patent/JPH083601B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Details Of Cameras Including Film Mechanisms (AREA)

Abstract

PURPOSE:To surely count the passing number of perforation, by varying a reference voltage by an inputted signal. CONSTITUTION:When a photoelectric signal is generated by a perforation detecting means 8, a pulse signal is generated by discriminating the photoelectric signal from an oscillation reference voltage having periodicity and oscillates at amplitude different from that of the photoelectric signal by the photoelectric signal by a pulse generating means based on the size of their voltages, therefore, it is possible to perform the waveform arrangement of the photoelectric signal from the perforation detecting means 8 accurately to a pulse. Therefore, it is possible to surely count the passing number of perforation by a count means 27 even when a few amount of fluctuation is generated in a power source battery.
JP62189389A 1987-07-29 1987-07-29 Perforation counting device Expired - Lifetime JPH083601B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62189389A JPH083601B2 (en) 1987-07-29 1987-07-29 Perforation counting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62189389A JPH083601B2 (en) 1987-07-29 1987-07-29 Perforation counting device

Publications (2)

Publication Number Publication Date
JPS6433537A true JPS6433537A (en) 1989-02-03
JPH083601B2 JPH083601B2 (en) 1996-01-17

Family

ID=16240488

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62189389A Expired - Lifetime JPH083601B2 (en) 1987-07-29 1987-07-29 Perforation counting device

Country Status (1)

Country Link
JP (1) JPH083601B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2688901A1 (en) * 1991-10-17 1993-09-24 Asahi Optical Co Ltd FILM WINDING DEVICE.
KR970048894A (en) * 1995-12-29 1997-07-29 이대원 Apparatus and method for calculating the number of usable film frames of a camera

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5098717U (en) * 1974-01-10 1975-08-16
JPS5995330U (en) * 1982-12-20 1984-06-28 富士写真フイルム株式会社 Detection device for perforation holes and film information signal holes
JPS61182527U (en) * 1985-05-01 1986-11-14

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5098717U (en) * 1974-01-10 1975-08-16
JPS5995330U (en) * 1982-12-20 1984-06-28 富士写真フイルム株式会社 Detection device for perforation holes and film information signal holes
JPS61182527U (en) * 1985-05-01 1986-11-14

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2688901A1 (en) * 1991-10-17 1993-09-24 Asahi Optical Co Ltd FILM WINDING DEVICE.
US5323198A (en) * 1991-10-17 1994-06-21 Asahi Kogaku Kogyo Kabushiki Kaisha Film winding apparatus
KR970048894A (en) * 1995-12-29 1997-07-29 이대원 Apparatus and method for calculating the number of usable film frames of a camera

Also Published As

Publication number Publication date
JPH083601B2 (en) 1996-01-17

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