FR2035234A5 - - Google Patents

Info

Publication number
FR2035234A5
FR2035234A5 FR7004513A FR7004513A FR2035234A5 FR 2035234 A5 FR2035234 A5 FR 2035234A5 FR 7004513 A FR7004513 A FR 7004513A FR 7004513 A FR7004513 A FR 7004513A FR 2035234 A5 FR2035234 A5 FR 2035234A5
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
FR7004513A
Other languages
French (fr)
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.)
LUNDY ELECTRONICS SYSTEM
Original Assignee
LUNDY ELECTRONICS SYSTEM
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 LUNDY ELECTRONICS SYSTEM filed Critical LUNDY ELECTRONICS SYSTEM
Application granted granted Critical
Publication of FR2035234A5 publication Critical patent/FR2035234A5/fr
Expired 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
    • 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
    • G01C17/28—Electromagnetic compasses
    • G01C17/30—Earth-inductor compasses

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Electromagnetism (AREA)
  • Measuring Magnetic Variables (AREA)
  • Navigation (AREA)
FR7004513A 1969-02-10 1970-02-09 Expired FR2035234A5 (https=)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US79784369A 1969-02-10 1969-02-10

Publications (1)

Publication Number Publication Date
FR2035234A5 true FR2035234A5 (https=) 1970-12-18

Family

ID=25171940

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7004513A Expired FR2035234A5 (https=) 1969-02-10 1970-02-09

Country Status (4)

Country Link
US (1) US3634946A (https=)
DE (1) DE2005818A1 (https=)
FR (1) FR2035234A5 (https=)
GB (1) GB1285832A (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2134374A1 (https=) * 1971-04-28 1972-12-08 Laitram Corp

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3835375A (en) * 1972-01-21 1974-09-10 L Rovner Apparatus for determining the direction of a magnetic field relative to a reference direction by synchronously scanning the field and a memory
US3903610A (en) * 1972-08-18 1975-09-09 North Atlantic Industries Apparatus for measuring magnetic field direction
US3902252A (en) * 1974-01-02 1975-09-02 Safe Flight Instrument Magnetic field directional sensor
US3952420A (en) * 1974-08-05 1976-04-27 E-Systems, Inc. Digital solid state compass
FR2287681A1 (fr) * 1974-10-11 1976-05-07 France Etat Compas magnetique numerique
US3959889A (en) * 1974-11-29 1976-06-01 Thomas Samuel M Method and apparatus for determining a measured direction relative to an external magnetic direction
US3975621A (en) * 1975-02-24 1976-08-17 The Laitram Corporation Digital compass averaging circuit
US4091543A (en) * 1976-06-17 1978-05-30 The Laitram Corporation Automatic magnetic compass correction
DE2727132A1 (de) * 1976-06-17 1978-01-05 Laitram Corp Verfahren und einrichtung zur deviationskorrektur der anzeigesignale digitaler magnetkompasse
US4031630A (en) * 1976-06-17 1977-06-28 The Laitram Corporation Calibration apparatus for automatic magnetic compass correction
US4095348A (en) * 1976-11-10 1978-06-20 The Brunton Company Digital compass
US4633419A (en) * 1983-03-07 1986-12-30 Asahi Kogaku Kogyo K.K. Angle measuring device
WO1988007655A1 (en) * 1987-04-01 1988-10-06 Gustav Rennerfelt Multiturn absolute encoder
GB2209835A (en) * 1987-09-15 1989-05-24 Rory Paul Wilson A miniaturized dead reckoning automatic position sensor and recorder for attachment to animals
US5134394A (en) * 1990-04-12 1992-07-28 Beadle Leigh P Light aircraft navigation apparatus
US5924212A (en) * 1996-10-09 1999-07-20 Donnelly Corporation Electronic compass
US6301794B1 (en) * 1999-05-27 2001-10-16 Johnson Controls, Inc. Vehicle compass system with continuous automatic calibration
USD427531S (en) * 1999-08-12 2000-07-04 Cobbs Manufacturing Company Compass
JP4002174B2 (ja) * 2002-12-19 2007-10-31 矢崎総業株式会社 磁気式舵角検出装置
TW200505208A (en) * 2003-07-24 2005-02-01 Liteon It Corp Mobile communication device
CN100498855C (zh) * 2005-09-21 2009-06-10 上海海事大学 船用全回转车钟
US20110163917A1 (en) * 2010-01-05 2011-07-07 David Lundgren Method and system for antenna orientation compensation for power ranging
KR20120117121A (ko) * 2011-04-14 2012-10-24 주식회사 오토스윙 다기능을 갖는 디지털 눈부심 방지 장치
US12104903B2 (en) * 2021-03-08 2024-10-01 Jefferson Science Associates, Llc Spinning hall probe compass

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA685506A (en) * 1964-04-28 A. Macdonald Angus Servo compass
US2176197A (en) * 1937-05-18 1939-10-17 Sperry Gyroscope Co Inc Earth inductor compass
US2464057A (en) * 1944-11-23 1949-03-08 Fairchild Camera Instr Co Earth inductor compass
US2680241A (en) * 1949-06-02 1954-06-01 Darrin H Gridley Position indication device
US3099090A (en) * 1959-06-19 1963-07-30 Continental Elektro Ind Ag Method and apparatus for digital indication of shaft position
US3197880A (en) * 1961-06-15 1965-08-03 Motorola Inc Solid state compass
US3129402A (en) * 1962-10-30 1964-04-14 Alfred M Henne Digital bearing readout for sector scan sonar
US3298027A (en) * 1964-09-08 1967-01-10 Collins Radio Co Digital automatic direction finding system
US3365799A (en) * 1965-01-13 1968-01-30 Honeywell Inc Angular position measuring device
US3445761A (en) * 1965-09-22 1969-05-20 Us Army Magnetic field intensity meter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2134374A1 (https=) * 1971-04-28 1972-12-08 Laitram Corp

Also Published As

Publication number Publication date
DE2005818A1 (de) 1970-11-26
GB1285832A (en) 1972-08-16
US3634946A (en) 1972-01-18

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Legal Events

Date Code Title Description
ST Notification of lapse