IT961146B - DEVICE PERMITTING ME TO DETERMINE THE DIRECTION OF A BRIGHT RADIATION - Google Patents

DEVICE PERMITTING ME TO DETERMINE THE DIRECTION OF A BRIGHT RADIATION

Info

Publication number
IT961146B
IT961146B IT21176/72A IT2117672A IT961146B IT 961146 B IT961146 B IT 961146B IT 21176/72 A IT21176/72 A IT 21176/72A IT 2117672 A IT2117672 A IT 2117672A IT 961146 B IT961146 B IT 961146B
Authority
IT
Italy
Prior art keywords
device permitting
bright radiation
bright
radiation
permitting
Prior art date
Application number
IT21176/72A
Other languages
Italian (it)
Original Assignee
Schlumberger Compteurs
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
Priority claimed from FR7108662A external-priority patent/FR2129045A5/fr
Priority claimed from FR7202012A external-priority patent/FR2168223B2/fr
Application filed by Schlumberger Compteurs filed Critical Schlumberger Compteurs
Application granted granted Critical
Publication of IT961146B publication Critical patent/IT961146B/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/78—Direction-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
    • G01S3/782—Systems for determining direction or deviation from predetermined direction
    • G01S3/783—Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived from static detectors or detector systems
    • G01S3/7835—Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived from static detectors or detector systems using coding masks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/14—Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Theoretical Computer Science (AREA)
  • Optical Measuring Cells (AREA)
IT21176/72A 1971-03-12 1972-02-29 DEVICE PERMITTING ME TO DETERMINE THE DIRECTION OF A BRIGHT RADIATION IT961146B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7108662A FR2129045A5 (en) 1971-03-12 1971-03-12
FR7202012A FR2168223B2 (en) 1972-01-21 1972-01-21

Publications (1)

Publication Number Publication Date
IT961146B true IT961146B (en) 1973-12-10

Family

ID=26216259

Family Applications (1)

Application Number Title Priority Date Filing Date
IT21176/72A IT961146B (en) 1971-03-12 1972-02-29 DEVICE PERMITTING ME TO DETERMINE THE DIRECTION OF A BRIGHT RADIATION

Country Status (3)

Country Link
GB (1) GB1380144A (en)
IT (1) IT961146B (en)
NL (1) NL7203313A (en)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4593187A (en) * 1982-10-29 1986-06-03 The Perkin-Elmer Corporation Non-imaging illumination incidence angle detection 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
GB2504249B (en) * 1989-09-04 2014-07-23 Selex Galileo Ltd Apparatus for detecting varying-intensity coherent optical radiation
GB9022873D0 (en) * 1990-10-20 1990-12-05 Mitchelson David L Position fixing
US7435940B2 (en) 2003-03-12 2008-10-14 Flatfrog Laboratories Ab System and a method of determining the position of a radiation emitting element
EP1665024B1 (en) 2003-09-12 2011-06-29 FlatFrog Laboratories AB A system and method of determining a position of a radiation scattering/reflecting element
WO2005026930A2 (en) 2003-09-12 2005-03-24 O-Pen Aps A system and method of determining a position of a radiation emitting element
IL165618A0 (en) * 2004-12-07 2006-01-15 Complementary masks
SE533704C2 (en) 2008-12-05 2010-12-07 Flatfrog Lab Ab Touch sensitive apparatus and method for operating the same
US10168835B2 (en) 2012-05-23 2019-01-01 Flatfrog Laboratories Ab Spatial resolution in touch displays
US10019113B2 (en) 2013-04-11 2018-07-10 Flatfrog Laboratories Ab Tomographic processing for touch detection
CN103234511B (en) * 2013-04-12 2015-04-22 北京控制工程研究所 Miniature long life coding type sun sensor
US9874978B2 (en) 2013-07-12 2018-01-23 Flatfrog Laboratories Ab Partial detect mode
WO2015108480A1 (en) 2014-01-16 2015-07-23 Flatfrog Laboratories Ab Improvements in tir-based optical touch systems of projection-type
WO2015108479A1 (en) 2014-01-16 2015-07-23 Flatfrog Laboratories Ab Light coupling in tir-based optical touch systems
CN104090509B (en) * 2014-06-24 2017-01-11 北京控制工程研究所 Encoding type sun sensor signal processing system based on FPGA
EP3161594A4 (en) 2014-06-27 2018-01-17 FlatFrog Laboratories AB Detection of surface contamination
EP3250993B1 (en) 2015-01-28 2019-09-04 FlatFrog Laboratories AB Dynamic touch quarantine frames
US10318074B2 (en) 2015-01-30 2019-06-11 Flatfrog Laboratories Ab Touch-sensing OLED display with tilted emitters
CN107209609A (en) 2015-02-09 2017-09-26 平蛙实验室股份公司 It is included in the optical touch system of the device of the projection of transmission panel above and within and detection light beam
EP3265855A4 (en) 2015-03-02 2018-10-31 FlatFrog Laboratories AB Optical component for light coupling
EP3387516B1 (en) 2015-12-09 2022-04-20 FlatFrog Laboratories AB Improved stylus identification
US10761657B2 (en) 2016-11-24 2020-09-01 Flatfrog Laboratories Ab Automatic optimisation of touch signal
EP3535640B1 (en) 2016-12-07 2022-09-07 FlatFrog Laboratories AB An improved touch device
CN110300950B (en) 2017-02-06 2023-06-16 平蛙实验室股份公司 Optical coupling in touch sensing systems
US10481737B2 (en) 2017-03-22 2019-11-19 Flatfrog Laboratories Ab Pen differentiation for touch display
EP4036697A1 (en) 2017-03-28 2022-08-03 FlatFrog Laboratories AB Optical touch sensing apparatus
US11256371B2 (en) 2017-09-01 2022-02-22 Flatfrog Laboratories Ab Optical component
US11567610B2 (en) 2018-03-05 2023-01-31 Flatfrog Laboratories Ab Detection line broadening
CN112889016A (en) 2018-10-20 2021-06-01 平蛙实验室股份公司 Frame for touch sensitive device and tool therefor
US11943563B2 (en) 2019-01-25 2024-03-26 FlatFrog Laboratories, AB Videoconferencing terminal and method of operating the same
US12056316B2 (en) 2019-11-25 2024-08-06 Flatfrog Laboratories Ab Touch-sensing apparatus
WO2021162602A1 (en) 2020-02-10 2021-08-19 Flatfrog Laboratories Ab Improved touch-sensing apparatus

Also Published As

Publication number Publication date
GB1380144A (en) 1975-01-08
NL7203313A (en) 1972-09-14

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