JPS5574520A - Automatic focusing device - Google Patents

Automatic focusing device

Info

Publication number
JPS5574520A
JPS5574520A JP14808878A JP14808878A JPS5574520A JP S5574520 A JPS5574520 A JP S5574520A JP 14808878 A JP14808878 A JP 14808878A JP 14808878 A JP14808878 A JP 14808878A JP S5574520 A JPS5574520 A JP S5574520A
Authority
JP
Japan
Prior art keywords
circuit
signal becomes
sequence
flops
flip
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
JP14808878A
Other languages
Japanese (ja)
Other versions
JPS6152452B2 (en
Inventor
Shuichi Tamura
Masahiko Ogawa
Ryuji Tokuda
Tetsuya Taguchi
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 JP14808878A priority Critical patent/JPS5574520A/en
Priority to US06/074,313 priority patent/US4350418A/en
Priority to DE2937288A priority patent/DE2937288C2/en
Publication of JPS5574520A publication Critical patent/JPS5574520A/en
Publication of JPS6152452B2 publication Critical patent/JPS6152452B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)

Abstract

PURPOSE: To prevent the failure of operation by performing the respective operation steps after sequence starting in an electronical sequence circuit.
CONSTITUTION: The sequence control circuit is constituted by connecting an inversion circuit I6 to a supply voltage detecting circuit G by way of the logical product circuit AND2 connected with a counter C1 via OR circuit OR 1, an OR circuit 2 connected with reset circuits Cr, Rs, flip-flops FF1, FF2, a logical add circuit OR 3, etc. If with this arrangment the supply voltage is applied by depression of a release button, the flip-flops FF1, FF2 are reset by reset circuits Cr, Rs. When the extension of the lens-barrel is started after this, the LEST signal becomes lower level and further the PEAK signal becomes low level and the shutter begins opening operation, thence the lens-barrel reaches the specified portion, at which time the 5M signal becomes low level, then the sutter release is accomplished.
COPYRIGHT: (C)1980,JPO&Japio
JP14808878A 1978-09-14 1978-11-30 Automatic focusing device Granted JPS5574520A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP14808878A JPS5574520A (en) 1978-11-30 1978-11-30 Automatic focusing device
US06/074,313 US4350418A (en) 1978-09-14 1979-09-11 Camera provided with automatic focus adjusting device
DE2937288A DE2937288C2 (en) 1978-09-14 1979-09-14 Camera with an automatic focusing device for a lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14808878A JPS5574520A (en) 1978-11-30 1978-11-30 Automatic focusing device

Publications (2)

Publication Number Publication Date
JPS5574520A true JPS5574520A (en) 1980-06-05
JPS6152452B2 JPS6152452B2 (en) 1986-11-13

Family

ID=15444958

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14808878A Granted JPS5574520A (en) 1978-09-14 1978-11-30 Automatic focusing device

Country Status (1)

Country Link
JP (1) JPS5574520A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58132733A (en) * 1982-02-02 1983-08-08 Canon Inc Automatic focusing camera provided with auxiliary illuminator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3617017A1 (en) * 1986-05-21 1987-11-26 Bosch Gmbh Robert STATOR FOR AN ELECTRICAL MACHINE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58132733A (en) * 1982-02-02 1983-08-08 Canon Inc Automatic focusing camera provided with auxiliary illuminator
JPH021285B2 (en) * 1982-02-02 1990-01-11 Canon Kk

Also Published As

Publication number Publication date
JPS6152452B2 (en) 1986-11-13

Similar Documents

Publication Publication Date Title
JPS5574520A (en) Automatic focusing device
JPS5356903A (en) Automatic level control circuit for telephone set
JPS55121424A (en) Ee lock system of automatic exposure control camera
JPS5639525A (en) Exposure control circuit of camera
JPS57174756A (en) Controlling system for mode setting
JPS5587131A (en) Dimming system of electronic flash
JPS5726976A (en) Automatic white balance adjusting circuit for color video camera
JPS56154716A (en) Release device of automatic iris control camera
GB2047907A (en) Cameras
JPS5218312A (en) Display circuit for the camera
JPS53100229A (en) Control circuit for single lens reflex camera
JPS5717272A (en) Electronic camera
NO802312L (en) CONNECTOR FOR MONITORING AN INPUT VOLTAGE
JPS55146433A (en) Warning device of automatic exposure camera
JPS55580A (en) Exposure time control method in single-lens reflex camera
JPS5562510A (en) Electronic volume and automatic sound recording level setting unit using it
JPS5292719A (en) Photographic mode change-over system for camera
JPS5579426A (en) Automatic exposure control device capable of auto-fading
JPS5492358A (en) Electronic watch
JPS5538550A (en) Single lens reflex camera having display hold circuit
JPS5589821A (en) Malfunction preventing circuit of camera
JPS5262015A (en) Automatic windup device for camera
JPS55156923A (en) Exposure operating circuit
FR2349233A1 (en) Mechanism to limit starting current of universal motor - has instrument switch with additional delay contact bridging commencement control contact (NL 24.10.77)
JPS5517136A (en) Film winding checker