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JPS5569134A - Electronic flash device - Google Patents

Electronic flash device

Info

Publication number
JPS5569134A
JPS5569134A JP14373878A JP14373878A JPS5569134A JP S5569134 A JPS5569134 A JP S5569134A JP 14373878 A JP14373878 A JP 14373878A JP 14373878 A JP14373878 A JP 14373878A JP S5569134 A JPS5569134 A JP S5569134A
Authority
JP
Japan
Prior art keywords
camera
flash device
transistor
diode
goes
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
JP14373878A
Other languages
Japanese (ja)
Inventor
Shozo Abe
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.)
Kyocera Corp
Yashica Co Ltd
Original Assignee
Kyocera Corp
Yashica 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 Kyocera Corp, Yashica Co Ltd filed Critical Kyocera Corp
Priority to JP14373878A priority Critical patent/JPS5569134A/en
Publication of JPS5569134A publication Critical patent/JPS5569134A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exposure Control For Cameras (AREA)
  • Stroboscope Apparatuses (AREA)

Abstract

PURPOSE: To connect the camera and flash device readily with high reliability by performing the transmission and reception of the charging completion and dimming signals between the camera and flash device by making the other of two sets of semiconductor switches of common connection wiring non-conducting while the other is conducting.
CONSTITUTION: When the main capacitor charging of the flash device completes, a transistor T4 conducts and the diode D1 forming a semiconductor switch conducts and at the same time the switching transistor T2 connected to the connected line of the diode D1 goes OFF, causing the charging completion signal appearing only at the terminal B to be transmitted to the camera. When the X-point switch X-SW cooperating to the shutter goes ON, flash is produced and the diode D1 is turned OFF by and the transistor T2 is conducted the negative voltage by the differentiating circuit formed by a capacitor C4 and resistance R6. As a result, the dimming signal from the camera side goes through the terminal B and transistor T2 and controls emission stop. Hence, the signals are transmitted and received by way of the common connecting line to which no high voltage is applied, thus the camera and flash device are connected by the simple constitution with high reliability without any breakge, etc. of ICs.
COPYRIGHT: (C)1980,JPO&Japio
JP14373878A 1978-11-21 1978-11-21 Electronic flash device Pending JPS5569134A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14373878A JPS5569134A (en) 1978-11-21 1978-11-21 Electronic flash device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14373878A JPS5569134A (en) 1978-11-21 1978-11-21 Electronic flash device

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP13247185A Division JPS6117132A (en) 1985-06-18 1985-06-18 Camera with electronic flash device

Publications (1)

Publication Number Publication Date
JPS5569134A true JPS5569134A (en) 1980-05-24

Family

ID=15345857

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14373878A Pending JPS5569134A (en) 1978-11-21 1978-11-21 Electronic flash device

Country Status (1)

Country Link
JP (1) JPS5569134A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5711522U (en) * 1980-06-20 1982-01-21
JPS59189332A (en) * 1983-04-13 1984-10-26 Ricoh Co Ltd Electronic flash device
JPS59191023A (en) * 1983-04-14 1984-10-30 Ricoh Co Ltd Felectronic flash device
JPS59191022A (en) * 1983-04-14 1984-10-30 Ricoh Co Ltd Stroboscope photographing system
JPS60163028A (en) * 1984-02-04 1985-08-24 Ricoh Co Ltd Electronic flash device
JPS60163029A (en) * 1984-02-04 1985-08-24 Ricoh Co Ltd Electronic flash photographing system
JPS6117132A (en) * 1985-06-18 1986-01-25 Kyocera Corp Camera with electronic flash device
JPS6141820U (en) * 1985-07-05 1986-03-17 ヤマハ発動機株式会社 Check valve of secondary air supply device
JPS61201600U (en) * 1985-06-07 1986-12-17
JPS62115135A (en) * 1986-10-31 1987-05-26 Minolta Camera Co Ltd Flash photographing device
JPH01302239A (en) * 1988-12-16 1989-12-06 Minolta Camera Co Ltd Flash device having data transmitting function

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5021607A (en) * 1973-06-22 1975-03-07
JPS5068723A (en) * 1973-10-22 1975-06-09
JPS50154003A (en) * 1974-05-31 1975-12-11
JPS5112135A (en) * 1974-07-20 1976-01-30 Nippon Kogaku Kk
JPS52156618A (en) * 1976-06-23 1977-12-27 Nippon Chemical Ind Flash camera controller

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5021607A (en) * 1973-06-22 1975-03-07
JPS5068723A (en) * 1973-10-22 1975-06-09
JPS50154003A (en) * 1974-05-31 1975-12-11
JPS5112135A (en) * 1974-07-20 1976-01-30 Nippon Kogaku Kk
JPS52156618A (en) * 1976-06-23 1977-12-27 Nippon Chemical Ind Flash camera controller

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5711522U (en) * 1980-06-20 1982-01-21
JPS59189332A (en) * 1983-04-13 1984-10-26 Ricoh Co Ltd Electronic flash device
JPS59191023A (en) * 1983-04-14 1984-10-30 Ricoh Co Ltd Felectronic flash device
JPS59191022A (en) * 1983-04-14 1984-10-30 Ricoh Co Ltd Stroboscope photographing system
JPS60163028A (en) * 1984-02-04 1985-08-24 Ricoh Co Ltd Electronic flash device
JPS60163029A (en) * 1984-02-04 1985-08-24 Ricoh Co Ltd Electronic flash photographing system
JPS61201600U (en) * 1985-06-07 1986-12-17
JPH0437439Y2 (en) * 1985-06-07 1992-09-02
JPS6117132A (en) * 1985-06-18 1986-01-25 Kyocera Corp Camera with electronic flash device
JPH052130B2 (en) * 1985-06-18 1993-01-11 Kyocera Corp
JPS6141820U (en) * 1985-07-05 1986-03-17 ヤマハ発動機株式会社 Check valve of secondary air supply device
JPS62115135A (en) * 1986-10-31 1987-05-26 Minolta Camera Co Ltd Flash photographing device
JPH01302239A (en) * 1988-12-16 1989-12-06 Minolta Camera Co Ltd Flash device having data transmitting function

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