DK0900480T3 - Control circuit for recording an optical key operation - Google Patents

Control circuit for recording an optical key operation

Info

Publication number
DK0900480T3
DK0900480T3 DK97923091T DK97923091T DK0900480T3 DK 0900480 T3 DK0900480 T3 DK 0900480T3 DK 97923091 T DK97923091 T DK 97923091T DK 97923091 T DK97923091 T DK 97923091T DK 0900480 T3 DK0900480 T3 DK 0900480T3
Authority
DK
Denmark
Prior art keywords
diode
voltage
capacitor
load voltage
input port
Prior art date
Application number
DK97923091T
Other languages
Danish (da)
Inventor
Horst Prof Dr Ziegler
Original Assignee
Ziegler Horst
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 Ziegler Horst filed Critical Ziegler Horst
Application granted granted Critical
Publication of DK0900480T3 publication Critical patent/DK0900480T3/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • H03K17/9627—Optical touch switches
    • H03K17/9631—Optical touch switches using a light source as part of the switch
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • H03K17/9627—Optical touch switches
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • H03K17/9627—Optical touch switches
    • H03K17/9631—Optical touch switches using a light source as part of the switch
    • H03K17/9636—Optical touch switches using a light source as part of the switch using a pulsed light source

Landscapes

  • Electronic Switches (AREA)
  • Optical Communication System (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Burglar Alarm Systems (AREA)
  • Selective Calling Equipment (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Push-Button Switches (AREA)
  • Lock And Its Accessories (AREA)
  • Transmitters (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Radio Relay Systems (AREA)
  • Recording Measured Values (AREA)
  • Communication Control (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

The description relates to a control circuit for recording the actuation of an optical key, in which there is a light-sensitive diode operated in open circuit as a key actuation sensor. A microprocessor circuit monitors the no-load voltage of the diode to differentiate an actuation of the optical key from variations in the brightness of the ambient light. The invention is characterized by an easily producible voltage-time-conversion process for monitoring the no-load voltage. To this end, there is a capacitor connected to the diode which assumes a load operating status corresponding to the no-load voltage of the diode and can be discharged in a discharge operating status via a discharge resistor, where the microprocessor circuit has a high-resistance input port connected to the capacitor to monitor the capacitor discharge and, as a measure of the no-load voltage, determines the time elapsing until the voltage at the input port during the capacitor discharge process reaches a predetermined input port switching threshold.
DK97923091T 1996-05-23 1997-05-15 Control circuit for recording an optical key operation DK0900480T3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19620866 1996-05-23
PCT/EP1997/002508 WO1997044902A1 (en) 1996-05-23 1997-05-15 Control circuit for recording the actuation of an optical key

Publications (1)

Publication Number Publication Date
DK0900480T3 true DK0900480T3 (en) 2001-09-24

Family

ID=7795166

Family Applications (2)

Application Number Title Priority Date Filing Date
DK97100329T DK0809371T3 (en) 1996-05-23 1997-01-10 Data Transmission and Receiving Link
DK97923091T DK0900480T3 (en) 1996-05-23 1997-05-15 Control circuit for recording an optical key operation

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DK97100329T DK0809371T3 (en) 1996-05-23 1997-01-10 Data Transmission and Receiving Link

Country Status (12)

Country Link
EP (2) EP0809371B1 (en)
AT (2) ATE232340T1 (en)
CZ (2) CZ291065B6 (en)
DE (3) DE19654853A1 (en)
DK (2) DK0809371T3 (en)
ES (2) ES2192237T3 (en)
GR (1) GR3036663T3 (en)
HU (1) HU223028B1 (en)
PL (2) PL330070A1 (en)
SI (1) SI0809371T1 (en)
SK (2) SK159398A3 (en)
WO (1) WO1997044902A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19805959A1 (en) * 1998-02-13 1999-08-19 Ego Elektro Geraetebau Gmbh Sensor switching device for domestic electrical appliance, such as electric oven
US6330091B1 (en) * 1998-05-15 2001-12-11 Universal Electronics Inc. IR receiver using IR transmitting diode
DE10133823A1 (en) * 2001-07-16 2003-02-27 Gerd Reime Optoelectronic device for position and movement detection and associated method
DE10145248C1 (en) * 2001-09-13 2003-03-20 Krohne Messtechnik Kg Data transmission method
DE10146996A1 (en) 2001-09-25 2003-04-30 Gerd Reime Circuit with an opto-electronic display content
DE10248238A1 (en) * 2002-10-16 2004-04-29 Delphi Technologies, Inc., Troy Lighting device, in particular for motor vehicles
DE202008002020U1 (en) * 2008-02-13 2009-03-05 Steca Elektronik Gmbh Electronic switch
US8277170B2 (en) 2008-05-16 2012-10-02 General Electric Company Cooling circuit for use in turbine bucket cooling
DE102008053537A1 (en) * 2008-10-28 2010-04-29 Alexander Gruber Evaluation of the movement of objects with a field of at least two light-emitting diodes
AT509969B1 (en) * 2010-05-31 2015-06-15 Fronius Int Gmbh METHOD AND DEVICE FOR CARRYING OUT A SWITCHING PROCESS
DE102016219200A1 (en) * 2016-10-04 2018-04-05 Tridonic Gmbh & Co Kg Integrated arrangement of modulated light points for communication by means of visible light

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3035944C2 (en) * 1980-09-24 1983-06-01 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Semiconductor optical display device
DE3116072A1 (en) * 1981-04-22 1982-11-11 Siemens AG, 1000 Berlin und 8000 München CIRCUIT ARRANGEMENT FOR A RAY DETECTOR
CH644244B (en) * 1981-04-22 Asulab Sa ELECTRONIC WATCH WITH FIXED CONTROL BODY.
JPS57178117A (en) * 1981-04-27 1982-11-02 Minolta Camera Co Ltd Light measuring device
EP0163138A1 (en) * 1984-05-21 1985-12-04 Energy Conversion Devices, Inc. Touch sensitive keyboard input device and method
EP0172405B1 (en) * 1984-07-26 1989-04-12 Miles Inc. Circuitry for a portable test strip reading instrument
JPS62154791A (en) * 1985-12-27 1987-07-09 Hitachi Vlsi Eng Corp Light receiving and emitting circuit
JPS6323431A (en) * 1986-07-16 1988-01-30 Nec Corp Optical transmission equipment
CA2010165A1 (en) * 1989-03-13 1990-09-13 Richard L. Hurtle Compact semi-programmable device for reading reagent test strips and method relating thereto
JPH04304798A (en) * 1991-04-01 1992-10-28 Akai Electric Co Ltd Learning remote controller
DE4336669C1 (en) 1993-10-27 1994-12-15 Ziegler Horst Input field

Also Published As

Publication number Publication date
HUP9700938A2 (en) 1998-01-28
GR3036663T3 (en) 2001-12-31
CZ379698A3 (en) 1999-08-11
CZ291065B6 (en) 2002-12-11
DK0809371T3 (en) 2003-02-24
EP0900480B1 (en) 2001-07-11
HU9700938D0 (en) 1997-07-28
DE19654853A1 (en) 1997-11-27
SI0809371T1 (en) 2003-08-31
PL183340B1 (en) 2002-06-28
SK159398A3 (en) 1999-08-06
ATE232340T1 (en) 2003-02-15
ES2159864T3 (en) 2001-10-16
CZ159397A3 (en) 1997-12-17
PL330070A1 (en) 1999-04-26
DE59709252D1 (en) 2003-03-13
ES2192237T3 (en) 2003-10-01
WO1997044902A1 (en) 1997-11-27
ATE203130T1 (en) 2001-07-15
HU223028B1 (en) 2004-03-01
CZ286252B6 (en) 2000-02-16
SK284254B6 (en) 2004-12-01
DE59704023D1 (en) 2001-08-16
PL320129A1 (en) 1997-11-24
HUP9700938A3 (en) 2000-02-28
EP0809371B1 (en) 2003-02-05
EP0900480A1 (en) 1999-03-10
EP0809371A1 (en) 1997-11-26
SK64997A3 (en) 1999-06-11

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