JPS6433537A - Perforation counter - Google Patents
Perforation counterInfo
- 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
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.
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)
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)
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 |
-
1987
- 1987-07-29 JP JP62189389A patent/JPH083601B2/en not_active Expired - Lifetime
Patent Citations (3)
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)
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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