Contactless control panel

Patent metadata

Field	Value
Publication number	US-11379048-B2
Application number	US-202017064458-A
Country	US
Kind code	B2
Filing date	Oct 6, 2020
Priority date	Oct 14, 2012
Publication date	Jul 5, 2022
Grant date	Jul 5, 2022

Abstract

An input panel for an electronic device, including an arrangement of buttons, wherein each button is actuated when pressed, providing input to an electronic device, and a sensor, detecting location of a user's finger above the buttons, the sensor including a housing, a printed circuit board, light emitters and photodiode detectors, lenses mounted in the housing in such a manner that, when the housing is mounted along an edge of the arrangement, the lenses direct light from the emitters along a plane above the buttons, and direct light from the plane, reflected toward the lenses by an object inserted into the plane, onto the detectors, a processor configured to identify a location in the plane at which the object is inserted based on the detections of light reflected by the object, and a communications port configured to output the identified location to the electronic device.

First claim

The invention claimed is:

1. An input panel for contactless operation of an electronic device or other equipment, comprising:
a display configured to present a two-dimensional matrix of virtual controls for an electronic device or other equipment; and
a sensor mounted along an edge of said display, operable to detect a location of a user's finger in a detection area in an airspace in front of said display, the detection area being equal in size to the two-dimensional matrix of virtual controls, the sensor comprising:
a housing;
a printed circuit board mounted in said housing;
a linear array of interleaved light emitters and photodiode detectors mounted on said printed circuit board, the array being at least as long as a length or width of the matrix of virtual controls;
a plurality of lenses mounted in said housing in such a manner that, when said housing is connected to said display, the lenses (i) direct light from said emitters along a plane in an airspace in front of the display, and (ii) direct light from the plane, reflected toward the lenses by an object inserted into the plane, onto said detectors;
a processor mounted in said circuit board configured to synchronously activate emitter-detector pairs, and configured to identify a location in the plane at which the object is inserted based on the detections of light reflected by the object; and
a communications port configured to output the identified location to the electronic device or other equipment as a location on said display corresponding to the identified location in the plane, whereby the electronic device or other equipment activates that one of the virtual controls positioned at the location on said display.

2. The input panel of claim 1 , wherein said processor is further configured to detect in-air gestures performed by the object in the plane based on a series of identified locations over time, and wherein said communications port is further configured to output the identified gesture to the electronic device or other equipment as a gesture performed on said display corresponding to the in-air gestures performed in the plane.

3. The input panel of claim 1 , wherein said housing is arranged to be retrofitted to a display panel of an electronic device or other equipment.

4. The input panel of claim 1 , wherein said light emitters and said photodiode detectors are mounted as bare dies without individual lenses on said circuit board.

5. The input panel of claim 4 , wherein said light emitters comprise vertical-cavity surface-emitting lasers.

6. An input panel for operating an electronic device or other equipment, comprising:
a two-dimensional arrangement of buttons or keys, wherein each button or key is actuated when pressed, providing input to an electronic device or other equipment; and
a sensor, mounted along an edge of the two-dimensional arrangement, detecting location of a user's finger above said buttons or keys, and transmitting the detected location as input to the electronic device or other equipment, the sensor comprising:
a housing;
a printed circuit board mounted in said housing;
a linear array of interleaved light emitters and photodiode detectors mounted on said printed circuit board, having a length at least equal to a length or width of the two-dimensional arrangement;
a plurality of lenses mounted in said housing in such a manner that, when said housing is mounted along the edge of the two-dimensional arrangement, the lenses (i) direct light from said emitters along a plane in an airspace above the buttons or keys, and (ii) direct light from the plane, reflected toward the lenses by an object inserted into the plane, onto said detectors;
a processor mounted in said circuit board configured to synchronously activate emitter-detector pairs and configured to identify a location in the plane at which the object is inserted based on the detections of light reflected by the object; and
a communications port configured to output the identified location to the electronic device or other equipment.

7. The input panel of claim 6 , wherein said light emitters and said photodiode detectors are mounted as bare dies without individual lenses on said circuit board.

8. The input panel of claim 7 , wherein said light emitters comprise vertical-cavity surface-emitting lasers.

9. The input panel of claim 6 , wherein said housing is arranged to be retrofitted to a control panel of an electronic device or other equipment.

10. An optical sensor configured to provide a contactless input method for an electronic device or other equipment, the optical sensor being configured to perform a method comprising:
projecting focused light beams from a series of locations along an edge of a control panel comprising a matrix of controls for an electronic device or other equipment, across a plane in an airspace in front of the controls, whereby the projected light beams traverse an area equal in size to the area of the matrix, each light beam being projected at a time that none of the other light beams is projected;
detecting reflections of the projected light beams reflected by an object inserted into the plane;
identifying which light beams are reflected;
further identifying an angle at which the detected light beams are reflected;
calculating a location in the plane at which the object is inserted based on said detecting, said identifying and said further identifying; and
outputting the calculated location from the sensor to the electronic device or other equipment as an actuated corresponding location on the control panel.

11. The optical sensor of claim 10 , configured to further perform identifying in-air gestures performed by the object in the plane based on a series of calculated locations over time, and outputting the identified gestures to the electronic device or other equipment as gestures performed on the control panel.

Assignees

• Neonode Inc

Inventors

• Eriksson Björn Thomas
• Jubner Björn Alexander
• Teymourzadeh Rozita
• Andersson Håkan Sven Erik
• Rosengren Per Carl Sture
• Wang Xiatao
• Holmgren Stefan Johannes
• Fröjdh Gunnar Martin
• Hartman Jan Tomas
• Sverud Per Oscar
• Kim Sangtaek
• Dahl-Örn Rasmus
• Berglind Tom Richard
• Nordström Karl Erik Patrik
• Sparf Lars Bertil
• Rosengren Erik Anders Claes
• Karlsson John Elis Gösta
• Behdasht Remo
• Åman Robin Kjell
• Shain Joseph

Classifications

• G06F3/0428

  by sensing at the edges of the touch surface the interruption of optical paths, e.g. an illumination plane, parallel to the touch surface which may be virtual (sensing beam interruptions in a planar beam grid of an optical touch-screen G06F3/0421) · CPC title

• G06F3/04883

  for inputting data by handwriting, e.g. gesture or text · CPC title

• G06F1/169

  the I/O peripheral being an integrated pointing device, e.g. trackball in the palm rest area, mini-joystick integrated between keyboard keys, touch pads or touch stripes (G06F1/1643 takes precedence; constructional details of pointing devices G06F3/033) · CPC title

• G06F3/042

  by opto-electronic means · CPC title

• G06F3/0421

  by interrupting or reflecting a light beam, e.g. optical touch-screen · CPC title