FR2124586B1 - - Google Patents

Info

Publication number
FR2124586B1
FR2124586B1 FR7204274A FR7204274A FR2124586B1 FR 2124586 B1 FR2124586 B1 FR 2124586B1 FR 7204274 A FR7204274 A FR 7204274A FR 7204274 A FR7204274 A FR 7204274A FR 2124586 B1 FR2124586 B1 FR 2124586B1
Authority
FR
France
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.)
Expired
Application number
FR7204274A
Other languages
French (fr)
Other versions
FR2124586A1 (enrdf_load_stackoverflow
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.)
Rank Organization Ltd
Original Assignee
Rank Organization 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 Rank Organization Ltd filed Critical Rank Organization Ltd
Publication of FR2124586A1 publication Critical patent/FR2124586A1/fr
Application granted granted Critical
Publication of FR2124586B1 publication Critical patent/FR2124586B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/25—Arrangements for performing computing operations, e.g. operational amplifiers for discontinuous functions, e.g. backlash, dead zone, limiting absolute value or peak value
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
    • G03B17/14—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets interchangeably
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/14—Control of position or direction using feedback using an analogue comparing device
    • G05D3/1427—Control of position or direction using feedback using an analogue comparing device with non-linear amplifier chain

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Nonlinear Science (AREA)
  • Automation & Control Theory (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • Control Of Position Or Direction (AREA)
  • Lens Barrels (AREA)
  • Feedback Control In General (AREA)
FR7204274A 1971-02-09 1972-02-09 Expired FR2124586B1 (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB425471 1971-02-09

Publications (2)

Publication Number Publication Date
FR2124586A1 FR2124586A1 (enrdf_load_stackoverflow) 1972-09-22
FR2124586B1 true FR2124586B1 (enrdf_load_stackoverflow) 1974-08-02

Family

ID=9773648

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7204274A Expired FR2124586B1 (enrdf_load_stackoverflow) 1971-02-09 1972-02-09

Country Status (4)

Country Link
DE (1) DE2165921A1 (enrdf_load_stackoverflow)
FR (1) FR2124586B1 (enrdf_load_stackoverflow)
GB (1) GB1332963A (enrdf_load_stackoverflow)
NL (1) NL7200624A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5552007A (en) * 1978-10-11 1980-04-16 Canon Inc Lens driving device with limitation of movable position
US4349771A (en) * 1979-09-26 1982-09-14 Lucas Industries Limited Stepper motor control circuit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1220068A (en) * 1967-11-01 1971-01-20 Ultra Electronics Ltd Improvements in or relating to signal selection systems

Also Published As

Publication number Publication date
DE2165921A1 (de) 1972-08-24
GB1332963A (en) 1973-10-10
NL7200624A (enrdf_load_stackoverflow) 1972-08-11
FR2124586A1 (enrdf_load_stackoverflow) 1972-09-22

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Legal Events

Date Code Title Description
ST Notification of lapse