Handheld Pointing Device and Operation Method Thereof
First Claim
1. A handheld pointing device, comprising:
- a body;
an image sensing module disposed in the body and configured to sense a reference light source and thereby capturing an image including of the reference light source; and
a processing circuit, disposed in the body and electrically connected to the image sensing module, configured to obtain the image including of the reference light source, calculate a coordinate of the image of the reference light source relative to the image captured by the image sensing module, and correct the coordinate according to a distance or a distance change between the body and the reference light source.
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Accused Products
Abstract
A handheld pointing device includes a body, an image sensing module and a processing circuit. The image sensing module is disposed in the body and configured to sense a reference light source and thereby capturing an image including of the reference light source. The processing circuit, disposed in the body and electrically connected to the image sensing module, is configured to obtain the image including of the reference light source, calculate a coordinate of the image of the reference light source relative to the image captured by the image sensing module, and correct the coordinate according to a distance or a distance change between the body and the reference light source. An operation method of a handheld pointing device is also provided.
12 Citations
21 Claims
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1. A handheld pointing device, comprising:
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a body; an image sensing module disposed in the body and configured to sense a reference light source and thereby capturing an image including of the reference light source; and a processing circuit, disposed in the body and electrically connected to the image sensing module, configured to obtain the image including of the reference light source, calculate a coordinate of the image of the reference light source relative to the image captured by the image sensing module, and correct the coordinate according to a distance or a distance change between the body and the reference light source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An operation method of a handheld pointing device, the handheld pointing device comprising a body and an image sensing module, the image sensing module being disposed in the body and configured to sense a reference light source and thereby capturing an image including of the reference light source, the operation method comprising:
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calculating a coordinate of the image of the reference light source relative to the image captured by the image sensing module; and correcting the coordinate according to a distance or a distance change between the body and the reference light source. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A handheld pointing device, comprising:
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an image sensing module configured to sense at least one reference light source and thereby capturing an image including of the reference light source(s); a lookup table recording a relationship between an imaging characteristic of the reference light source(s) and a group of coordinate adjustment parameters; and a processing circuit electrically connected to the image sensing module and configured to obtain the image including of the reference light source(s) and correct a coordinate based on the relationship between the imaging characteristic of the reference light source(s) and the group of coordinate adjustment parameters in the lookup table. - View Dependent Claims (20, 21)
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Specification