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Photodetecting circuit with compensated integration signal

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G01V-009/04
  • H01J-040/14
출원번호 US-0517769 (1990-05-02)
우선권정보 JP-0114648 (1989-05-08)
발명자 / 주소
  • Yoshida, Shigeo
  • Fujimoto, Isamu
출원인 / 주소
  • Dowa Mining Co., Ltd.
대리인 / 주소
    Cushman, Darby & Cushman
인용정보 피인용 횟수 : 46  인용 특허 : 8

초록

The optical input detection apparatus is adapted to integrate the value of the light received corresponding to the sum of the value of the light received by the light receiving device during driving of the light emitting device and the external flood light, deduct from the integration value the valu

대표청구항

1. A photodetecting circuit having at least one pair of a light emitting device and a photodetector spaced from each other for a specified distance and adapted to detect presence or absence of interruption of a light beam emitted from said light emitting device to said photodetector, comprising:

이 특허에 인용된 특허 (8)

  1. Carroll Arthur B. (Georgetown TX) Carstedt John K. (Round Rock TX), Early fault detection in an opto-matrix touch input device.
  2. Howard P. Guy (Junction City OR), Hand held bar code reader with modulated laser diode and detector.
  3. Simons Brent S. (Palo Alto CA), Laser light detection system.
  4. van der Gaag Leonard C. (San Jose CA) Pacheco Luciano (San Jose CA), Method and apparatus for measuring radiation from a plurality of light sources.
  5. Kawabata Takashi (Kanagawa JPX) Sato Yuichi (Kanagawa JPX) Tsunekawa Tokuichi (Kanagawa JPX) Matsumura Susumu (Kanagawa JPX), Photo-electric converting device.
  6. Hasegawa Kazuo (Furukawa JPX), Photodetecting circuit.
  7. Masters Timothy E. (Georgetown TX) Wehrer Wayne J. (Austin TX), Phototransistor apparatus with current injection ambient compensation.
  8. Carroll Arthur B. (St. Joseph IL) Lazarevich Vladeta D. (Bondville IL) Gardner Mark R. (Champaign IL), Touch panel with ambient light sampling.

이 특허를 인용한 특허 (46)

  1. Jansson, Anders; Goertz, Magnus; Eriksson, Thomas; Shain, Joseph; Kvist, Niklas; Pettersson, Robert; Sparf, Lars; Karlsson, John, ASIC controller for light-based sensor.
  2. Jansson, Anders; Goertz, Magnus; Eriksson, Thomas; Shain, Joseph; Kvist, Niklas; Pettersson, Robert; Sparf, Lars; Karlsson, John, ASIC controller for light-based touch screen.
  3. Swanson Scott C., Ambient light filter.
  4. Jubner, Alexander; Eriksson, Thomas; Fröjdh, Gunnar Martin; Fellin, Simon; Holmgren, Stefan, Autonomous drive user interface.
  5. Goertz, Magnus; Eriksson, Thomas; Shain, Joseph; Jansson, Anders; Kvist, Niklas; Pettersson, Robert; Sparf, Lars; Karlsson, John, Component bonding using a capillary effect.
  6. Eriksson, Thomas; Leine, Per; Laveno Mangelsdorff, Jochen; Pettersson, Robert; Jansson, Anders; Goertz, Magnus, Finger gesture user interface.
  7. Eriksson, Thomas; Leine, Per; Laveno Mangelsdorff, Jochen; Pettersson, Robert; Jansson, Anders; Goertz, Magnus, Finger gesture user interface.
  8. Ashdown Ian E.,CAX, Integral ambient light and occupancy sensor having a linear array of sensor element and a segmented slit aperture device.
  9. Eriksson, Thomas; Jubner, Alexander; Karlsson, John; Sparf, Lars; Lindfors, Saska; Pettersson, Robert, Integrated light guide and touch screen frame.
  10. Eriksson, Thomas; Jubner, Alexander; Karlsson, John; Sparf, Lars; Lindfors, Saska; Pettersson, Robert, Integrated light guide and touch screen frame and multi-touch determination method.
  11. Fröjdh, Gunnar Martin; Fellin, Simon; Eriksson, Thomas; Karlsson, John; Hedin, Maria; Berglind, Richard, Light-based controls in a toroidal steering wheel.
  12. Fröjdh, Gunnar Martin; Fellin, Simon; Eriksson, Thomas; Karlsson, John; Hedin, Maria; Berglind, Richard, Light-based controls on a toroidal steering wheel.
  13. Eriksson, Thomas; Leine, Per; Laveno Mangelsdorff, Jochen; Pettersson, Robert; Jansson, Anders; Goertz, Magnus, Light-based finger gesture user interface.
  14. Eriksson, Thomas; Leine, Per; Laveno Mangelsdorff, Jochen; Pettersson, Robert; Jansson, Anders; Goertz, Magnus, Light-based finger gesture user interface.
  15. Fröjdh, Gunnar Martin; Fellin, Simon; Eriksson, Thomas; Karlsson, John; Hedin, Maria; Berglind, Richard, Light-based touch controls on a steering wheel.
  16. Fröjdh, Gunnar Martin; Fellin, Simon; Eriksson, Thomas; Karlsson, John; Hedin, Maria; Berglind, Richard, Light-based touch controls on a steering wheel and dashboard.
  17. Goertz, Magnus; Eriksson, Thomas; Shain, Joseph, Light-based touch screen.
  18. Jansson, Anders; Goertz, Magnus; Eriksson, Thomas; Shain, Joseph; Kvist, Niklas; Pettersson, Robert; Sparf, Lars; Karlsson, John, Light-based touch screen.
  19. Goertz, Magnus; Eriksson, Thomas; Shain, Joseph; Jansson, Anders; Kvist, Niklas; Pettersson, Robert; Sparf, Lars; Karlsson, John, Light-based touch screen using elliptical and parabolic reflectors.
  20. Goertz, Magnus; Eriksson, Thomas; Shain, Joseph; Jansson, Anders; Kvist, Niklas; Pettersson, Robert; Sparf, Lars; Karlsson, John, Light-based touch screen using elongated light guides.
  21. Goertz, Magnus; Eriksson, Thomas; Shain, Joseph; Jansson, Anders; Kvist, Niklas; Pettersson, Robert; Sparf, Lars; Karlsson, John, Light-based touch screen with shift-aligned emitter and receiver lenses.
  22. Lorello, Michael J.; Jacobson, Gary S.; Doutney, George J., Mailing machine having optical sensors with improved immunity to ambient.
  23. Jensen Morten J., Method and apparatus for detecting low light levels.
  24. Morten J. Jensen, Method and apparatus for detecting low light levels.
  25. Jensen Morten J., Method and apparatus for measuring low power signals.
  26. Jolivet, Denis; Gillet, Alain, Method of reducing noise in an optically read image using an optical collection device.
  27. Goertz, Magnus; Eriksson, Thomas; Shain, Joseph; Jansson, Anders; Kvist, Niklas; Pettersson, Robert; Sparf, Lars; Karlsson, John, Methods for determining a touch location on a touch screen.
  28. Lewis,David K., Methods for determining the performance, status, and advanced failure of optical communication channels.
  29. Lewis,David K., Methods, systems and apparatus for measuring average received optical power.
  30. Goertz, Magnus George, On a substrate formed or resting display arrangement.
  31. Drumm, Owen, Optical control system with feedback control.
  32. Holmgren, Stefan; Sparf, Lars; Goertz, Magnus; Eriksson, Thomas; Shain, Joseph; Jansson, Anders; Kvist, Niklas; Pettersson, Robert; Karlsson, John, Optical elements with alternating reflective lens facets.
  33. Goertz, Magnus; Eriksson, Thomas; Shain, Joseph; Jansson, Anders; Kvist, Niklas; Pettersson, Robert; Sparf, Lars; Karlsson, John, Optical surface using a reflected image for determining three-dimensional position information.
  34. Goertz, Magnus; Eriksson, Thomas; Shain, Joseph, Optical touch screen systems using reflected light.
  35. Pettersson, Robert; Rosengren, Per; Rosengren, Erik; Holmgren, Stefan; Sparf, Lars; Berglind, Richard; Eriksson, Thomas; Nordström, Karl Erik Patrik; Fröjdh, Gunnar Martin; Wang, Xiatao; Behdasht, Remo, Optical touch screens.
  36. Pettersson, Robert; Rosengren, Per; Rosengren, Erik; Holmgren, Stefan; Sparf, Lars; Berglind, Richard; Eriksson, Thomas; Nordström, Karl Erik Patrik; Fröjdh, Gunnar Martin; Wang, Xiatao; Behdasht, Remo, Optical touch screens.
  37. Goertz, Magnus; Eriksson, Thomas; Shain, Joseph; Jansson, Anders; Kvist, Niklas; Pettersson, Robert; Sparf, Lars; Karlsson, John, Pressure-sensitive touch screen.
  38. Goertz, Magnus, Scanning of a touch screen.
  39. Goertz, Magnus, Scanning of a touch screen.
  40. Jubner, Alexander; Eriksson, Thomas; Fröjdh, Gunnar Martin; Fellin, Simon; Holmgren, Stefan, Steering wheel user interface.
  41. Jensen Morten J., System and method for measuring low power signals.
  42. Goertz, Magnus; Eriksson, Thomas; Shain, Joseph; Jansson, Anders; Kvist, Niklas; Pettersson, Robert; Sparf, Lars; Karlsson, John, Touch screen calibration and update methods.
  43. Goertz, Magnus, User interface.
  44. Goertz, Magnus, User interface.
  45. Jubner, Alexander; Eriksson, Thomas; Fröjdh, Gunnar Martin; Fellin, Simon; Holmgren, Stefan, User interface for curved input device.
  46. Goertz, Magnus; Shain, Joseph, User interface for mobile computer unit.
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