Displays for Electronic Devices that Detect and Respond to the Contour and/or Height Profile of User Input Objects
First Claim
1. A electronic device, comprising:
- a touch-sensitive display screen including an array of electromagnetic radiation emitters and electromagnetic radiation detectors, wherein the array of electromagnetic radiation detectors is configured to generate an image signal that represents an image of a user input object that is closely spaced to the display responsive to detected electromagnetic radiation that is reflected by the user input object; and
a controller circuit configured to control activation of the array of electromagnetic radiation emitters so that at least a portion of the array of electromagnetic radiation emitters are inactive in an absence of detecting electromagnetic radiation reflected by the user input object, and to selectively activate ones of the array of electromagnetic radiation emitters responsive to the array of electromagnetic radiation detectors detecting electromagnetic radiation that is reflected by the user input object.
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Accused Products
Abstract
An electronic device includes a touch-sensitive display screen including an array of electromagnetic radiation detectors. The array of electromagnetic radiation detectors is configured to generate an image signal that represents an image of a user input object that is closely spaced to the display, and to generate a touch signal in response to the display screen being touched by the user input object. The electronic device further includes a controller circuit that is configured to display a plurality of keys forming a keyboard and to display characters on the keys. The controller identifies from the image signal a size and/or an angular orientation of the user input object relative to the display screen. The controller identifies a user'"'"'s selection among characters indicated on the keyboard keys in response to the identified size and/or the angular orientation of the user input object and in response to the touch signal, and outputs character data corresponding to the identified user selected character.
29 Citations
20 Claims
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1. A electronic device, comprising:
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a touch-sensitive display screen including an array of electromagnetic radiation emitters and electromagnetic radiation detectors, wherein the array of electromagnetic radiation detectors is configured to generate an image signal that represents an image of a user input object that is closely spaced to the display responsive to detected electromagnetic radiation that is reflected by the user input object; and a controller circuit configured to control activation of the array of electromagnetic radiation emitters so that at least a portion of the array of electromagnetic radiation emitters are inactive in an absence of detecting electromagnetic radiation reflected by the user input object, and to selectively activate ones of the array of electromagnetic radiation emitters responsive to the array of electromagnetic radiation detectors detecting electromagnetic radiation that is reflected by the user input object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of operating a touch-sensitive display including an array of electromagnetic radiation emitters and electromagnetic radiation detectors, comprising:
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activating a reduced number of electromagnetic radiation emitters in an absence of electromagnetic radiation detected by the electromagnetic radiation detectors; selectively activating electromagnetic radiation emitters responsive to a detection of electromagnetic radiation reflected by a user input object; generating an image signal representing an acquired image of the user input object; and identifying a user selection of a character and/or icon responsive to the acquired image of the user input object. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification