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US 9,870,073 B2Granted
Position detection device, projector, and position detection method
AssigneeSeiko Epson Corporation
InventorYasuhiro Honda
Life of this patent
Estimating the term…
Abstract
A position detection device capable of preventing an operation that is not intended by an operator from being detected as an input is provided. The position detection device includes: a detecting section that detects an indicator that performs an operation with respect to a screen, and an indicator different from the indicator; an imaging section that forms a captured image obtained by imaging a range including the screen; and a control section that detects a motion of the indicator with respect to the screen and a position of the indicator with respect to the screen based on data on the captured image of the imaging section to determine whether or not to detect an operation based on the indicator as an input.
Claims9
A position detection device comprising:
- a detecting section that detects an indicator separable from a user's hand and a target different from the indicator, the indicator performing a first operation with respect to an operation surface, the target performing a second operation with respect to the operation surface;
- an imaging section that forms a captured image obtained by imaging a range including the operation surface;
- and
- a control section that detects a motion of the target with respect to the operation surface and a position of the indicator with respect to the operation surface based on the captured image to determine whether to detect the first operation performed by the indicator as an input or to negate the indicator and to instead detect the second operation performed by the target as the input,
- wherein the control section determines whether or not to detect the position of the indicator or the motion of the indicator as the input based on a distance between the indicator and the operation surface and a distance between the target and the operation surface, and
- wherein the control section determines that the position or motion of the indicator is not to be detected as the input when the distance between the indicator and the operation surface is longer than the distance between the target and the operation surface.
3 more elements
A projector comprising:
- a projecting section that projects an image onto a projection surface;
- a detecting section that detects an indicator separable from a user's hand and a target different from the indicator, the indicator performing a first operation with respect to an operation surface, the target performing a second operation with respect to the operation surface;
- an imaging section that forms a captured image obtained by imaging a range including the projection surface;
- and
- a control section that detects a motion of the target with respect to the projection surface and a position of the indicator with respect to the projection surface based on the captured image to determine whether to detect the first operation performed by the indicator as an input, or to negate the indicator and to instead detect the second operation performed by the target as the input,
- wherein the control section determines whether or not to detect the position of the indicator or the motion of the indicator as the input based on a distance between the indicator and the operation surface and a distance between the target and the operation surface, and
- wherein the control section determines that the position or motion of the indicator is not to be detected as the input when the distance between the indicator and the operation surface is longer than the distance between the target and the operation surface.
4 more elements
A position detection method comprising:
- detecting an indicator separable from a user's hand and a target different from the indicator, the indicator performing a first operation with respect to an operation surface, the target performing a second operation with respect to the operation surface;
- forming a captured image obtained by imaging a range including the operation surface;
- detecting a motion of the target with respect to the operation surface and a position of the indicator with respect to the operation surface based on the image captured in the forming of the captured image to determine whether to detect the first operation performed by the indicator as an input, or to negate the indicator and to instead detect the second operation performed by the target as the input;
- and
- determining whether or not to detect the position of the indicator or the motion of the indicator as the input based on a distance between the indicator and the operation surface and a distance between the target and the operation surface,
- wherein it is determined that the position or motion of the indicator is not to be detected as the input when the distance between the indicator and the operation surface is longer than the distance between the target and the operation surface.
3 more elements
Dependencies are inferred from the claim text.