Electronic device having an image-based data input system
First Claim
Patent Images
1. An electronic device, comprising:
- a window having a contact surface with an input region;
multiple indicia corresponding to respective markings viewable in the input region of the contact surface;
an image sensor constructed and arranged to capture images of the input region of the contact surface through the window; and
a data input processor coupled to the image sensor and operable to compute a central coordinate of an area of contact between an object and the contact surface in one of the captured images and to select as a user-selected indicium one of multiple ones of the indicia located within the contact area based on the central coordinate and a mapping between areas of the captured images and locations of the input indicia.
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Abstract
Electronic devices having image-based data input systems are described. In one aspect, an electronic device includes a window, multiple indicia, an image sensor, and a data input processor. The window has a contact surface with an input region. The multiple indicia are viewable in the input region of the contact surface. The image sensor is constructed and arranged to produce image signals corresponding to images of the input region. The data input processor is coupled to the image sensor and is operable to produce input signals based on image signals produced by the image sensor and a mapping between areas of the input region images and locations of the input indicia.
154 Citations
21 Claims
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1. An electronic device, comprising:
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a window having a contact surface with an input region; multiple indicia corresponding to respective markings viewable in the input region of the contact surface; an image sensor constructed and arranged to capture images of the input region of the contact surface through the window; and a data input processor coupled to the image sensor and operable to compute a central coordinate of an area of contact between an object and the contact surface in one of the captured images and to select as a user-selected indicium one of multiple ones of the indicia located within the contact area based on the central coordinate and a mapping between areas of the captured images and locations of the input indicia. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification