FR2172828B1 - - Google Patents

Info

Publication number
FR2172828B1
FR2172828B1 FR7206134A FR7206134A FR2172828B1 FR 2172828 B1 FR2172828 B1 FR 2172828B1 FR 7206134 A FR7206134 A FR 7206134A FR 7206134 A FR7206134 A FR 7206134A FR 2172828 B1 FR2172828 B1 FR 2172828B1
Authority
FR
Grant status
Grant
Patent type
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
FR7206134A
Other versions
FR2172828A1 (en )
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.)
Dassault Electronique SA
Original Assignee
Dassault Electronique SA
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
Grant date

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/78Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using electromagnetic waves other than radio waves
    • G01S3/781Details
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/78Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using electromagnetic waves other than radio waves
    • G01S3/782Systems for determining direction or deviation from predetermined direction
    • G01S3/783Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived from static detectors or detector systems
    • G01S3/7835Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived from static detectors or detector systems using coding masks
FR7206134A 1972-02-23 1972-02-23 Expired FR2172828B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7206134A FR2172828B1 (en) 1972-02-23 1972-02-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7206134A FR2172828B1 (en) 1972-02-23 1972-02-23

Publications (2)

Publication Number Publication Date
FR2172828A1 true FR2172828A1 (en) 1973-10-05
FR2172828B1 true FR2172828B1 (en) 1974-12-13

Family

ID=9093996

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7206134A Expired FR2172828B1 (en) 1972-02-23 1972-02-23

Country Status (1)

Country Link
FR (1) FR2172828B1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0265542A1 (en) * 1986-10-28 1988-05-04 Richard R. Rathbone Optical navigation system
US4857721A (en) * 1988-03-28 1989-08-15 The Perkin-Elmer Corporation Optical direction sensor having gray code mask spaced from a plurality of interdigitated detectors
CN1777859B (en) * 2003-03-12 2010-04-28 平蛙实验室股份公 System and method for determining ray emmitting unit
US7442914B2 (en) 2003-09-12 2008-10-28 Flatfrog Laboratories Ab System and method of determining a position of a radiation emitting element
CN1867881B (en) 2003-09-12 2010-08-18 O Pen Aps A system and method of determining a position of a radiation scattering/reflecting element
KR101633612B1 (en) 2007-10-26 2016-06-27 코닌클리케 필립스 엔.브이. A light angle selecting light detector device
US10019113B2 (en) 2013-04-11 2018-07-10 Flatfrog Laboratories Ab Tomographic processing for touch detection
US9874978B2 (en) 2013-07-12 2018-01-23 Flatfrog Laboratories Ab Partial detect mode

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3435246A (en) * 1966-02-09 1969-03-25 Webb James E Light radiation direction indicator with a baffle of two parallel grids

Also Published As

Publication number Publication date Type
FR2172828A1 (en) 1973-10-05 application

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Legal Events

Date Code Title Description
ST Notification of lapse