TOUCH PANELS WITH DYNAMIC ZOOMING AND LOW PROFILE BEZELS
First Claim
1. A method of using an image sensor in a touch panel to detect at least one touch event, wherein each of the at least one touch events comprises a touch event selected from the group consisting of:
- an object touching a surface of the touch panel in an active region of the touch panel and the object coming within a threshold distance the surface of the touch panel in the active region of the touch panel, the method comprising;
dividing the active region of the touch panel into a first plurality of sections;
detecting, using the image sensor, the touch event in a given one of the sections of the first plurality of sections;
dividing the given one of the sections of the first plurality of sections into a second plurality of sections; and
detecting, using the image sensor, the touch event in a given one of the sections of the second plurality of sections.
5 Assignments
0 Petitions
Accused Products
Abstract
An electronic device may have a touch panel. The touch panel may detect touch events using one or more cameras. The touch panel may include a planar exterior surface, such as a cover glass, that extends over an active region of a display and an inactive peripheral region. The cameras may be located underneath the inactive peripheral region. The cameras may include a light turning element to allow the cameras to detect touch events, without being raised above the exterior surface of the active region of the display (e.g., without having a raised profile). The touch panel may detect touch events using dynamic zooming techniques. As an example, the touch panel may divide the active region into sections, search for touch events in each section, zoom into sections in which touch events are found, and further search the sections in which touch events were found.
81 Citations
19 Claims
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1. A method of using an image sensor in a touch panel to detect at least one touch event, wherein each of the at least one touch events comprises a touch event selected from the group consisting of:
- an object touching a surface of the touch panel in an active region of the touch panel and the object coming within a threshold distance the surface of the touch panel in the active region of the touch panel, the method comprising;
dividing the active region of the touch panel into a first plurality of sections; detecting, using the image sensor, the touch event in a given one of the sections of the first plurality of sections; dividing the given one of the sections of the first plurality of sections into a second plurality of sections; and detecting, using the image sensor, the touch event in a given one of the sections of the second plurality of sections. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- an object touching a surface of the touch panel in an active region of the touch panel and the object coming within a threshold distance the surface of the touch panel in the active region of the touch panel, the method comprising;
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10. A touch panel comprising:
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a display module; at least one camera operable to detect touch events; and a planar cover member over both the display module and the at least one camera. - View Dependent Claims (11, 12, 13, 14)
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15. A system, comprising:
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a central processing unit; memory; input-output circuitry; and a touch panel, wherein the touch panel comprises; a display module, comprising; visible light emitting elements operable to display images for users of the touch panel; and infrared light emitting elements operable to selectively emit infrared light; and a plurality of cameras together operable to detect when one or more objects are touching the touch panel, wherein each camera is operable to receive infrared light emitted by the infrared light emitting elements and scattered off the one or more objects. - View Dependent Claims (16, 17, 18, 19)
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Specification