FR2287681A1 - Compas magnetique numerique - Google Patents

Compas magnetique numerique

Info

Publication number
FR2287681A1
FR2287681A1 FR7434195A FR7434195A FR2287681A1 FR 2287681 A1 FR2287681 A1 FR 2287681A1 FR 7434195 A FR7434195 A FR 7434195A FR 7434195 A FR7434195 A FR 7434195A FR 2287681 A1 FR2287681 A1 FR 2287681A1
Authority
FR
France
Prior art keywords
respect
pointer
digital
given direction
magnetic field
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
FR7434195A
Other languages
English (en)
Other versions
FR2287681B1 (fr
Inventor
Louis Manotte
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.)
Etat Francais
Original Assignee
Etat Francais
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 Etat Francais filed Critical Etat Francais
Priority to FR7434195A priority Critical patent/FR2287681A1/fr
Priority to SE7508624A priority patent/SE7508624L/xx
Priority to DE19752536140 priority patent/DE2536140A1/de
Priority to AU85399/75A priority patent/AU8539975A/en
Publication of FR2287681A1 publication Critical patent/FR2287681A1/fr
Application granted granted Critical
Publication of FR2287681B1 publication Critical patent/FR2287681B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
    • G01C17/02—Magnetic compasses
    • G01C17/04—Magnetic compasses with north-seeking magnetic elements, e.g. needles
    • G01C17/20—Observing the compass card or needle
    • G01C17/26—Observing the compass card or needle using electric pick-offs for transmission to final indicator, e.g. photocell

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Magnetic Variables (AREA)
FR7434195A 1974-10-11 1974-10-11 Compas magnetique numerique Granted FR2287681A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR7434195A FR2287681A1 (fr) 1974-10-11 1974-10-11 Compas magnetique numerique
SE7508624A SE7508624L (sv) 1974-10-11 1975-07-30 Numerisk magnetkompass
DE19752536140 DE2536140A1 (de) 1974-10-11 1975-08-13 Digitalmagnetkompass
AU85399/75A AU8539975A (en) 1974-10-11 1975-10-02 Compasses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7434195A FR2287681A1 (fr) 1974-10-11 1974-10-11 Compas magnetique numerique

Publications (2)

Publication Number Publication Date
FR2287681A1 true FR2287681A1 (fr) 1976-05-07
FR2287681B1 FR2287681B1 (fr) 1977-03-18

Family

ID=9143968

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7434195A Granted FR2287681A1 (fr) 1974-10-11 1974-10-11 Compas magnetique numerique

Country Status (4)

Country Link
AU (1) AU8539975A (fr)
DE (1) DE2536140A1 (fr)
FR (1) FR2287681A1 (fr)
SE (1) SE7508624L (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0434884A1 (fr) * 1989-12-29 1991-07-03 Detra Sa Appareil d'indication de direction

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3515978A1 (de) * 1984-05-04 1985-11-07 Canon K.K., Tokio/Tokyo Bilderzeugungsvorrichtung
US5526022A (en) 1993-01-06 1996-06-11 Virtual I/O, Inc. Sourceless orientation sensor
US5991085A (en) 1995-04-21 1999-11-23 I-O Display Systems Llc Head-mounted personal visual display apparatus with image generator and holder

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2201559A (en) * 1937-05-12 1940-05-21 Sperry Gyroscope Co Inc Earth induction compass
DE2005818A1 (de) * 1969-02-10 1970-11-26 Lundy Electronics & Systems, Inc., Glen Head, Long Island, N.Y. (V.St.A.) Digitale Kompaßanordnung
FR2146554A5 (fr) * 1971-07-19 1973-03-02 France Etat

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2201559A (en) * 1937-05-12 1940-05-21 Sperry Gyroscope Co Inc Earth induction compass
DE2005818A1 (de) * 1969-02-10 1970-11-26 Lundy Electronics & Systems, Inc., Glen Head, Long Island, N.Y. (V.St.A.) Digitale Kompaßanordnung
FR2146554A5 (fr) * 1971-07-19 1973-03-02 France Etat

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0434884A1 (fr) * 1989-12-29 1991-07-03 Detra Sa Appareil d'indication de direction

Also Published As

Publication number Publication date
DE2536140A1 (de) 1976-04-22
FR2287681B1 (fr) 1977-03-18
SE7508624L (sv) 1976-04-12
AU8539975A (en) 1977-04-07

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Legal Events

Date Code Title Description
ST Notification of lapse