Projector and control method
First Claim
Patent Images
1. A projector comprising:
- a plurality of transmitters each of which transmits a first signal to a first light emitting pen;
an imager that captures an image of light emitted from the first light emitting pen, the light being emitted from the first light emitting pen in response to a reception of the first signal;
a receiver that receives an infrared light transmitted from another projector to a second light emitting pen; and
a processor configured to act as a control unit that achieves, when the receiver receives the infrared light, synchronization of the timing of the first signal and the infrared light between the projector and the another projector such that the first signal and the infrared light are transmitted at a same time, whereinthe control unit includesa detection section that detects, based on the image captured by the imager, a position where the first light emitting pen has emitted light,a state judgment portion that judges whether or not the synchronization with the another projector is stable, anda number determination portion that determines a number of transmitters to be used among the plurality of transmitters based on a judgment result made by the state judgment portion.
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Accused Products
Abstract
A projector includes a plurality of transmitters each of which transmits a signal, a receiver that receives signals transmitted from another projector, and a control unit that achieves synchronization of the signals between the projector and the another projector based on the signals transmitted from the another projector and received by the receiver. The control unit includes a state judgment portion that judges whether or not the synchronization with the another projector is stable and a number determination portion that determines the number of transmitters to be used among the plurality of transmitters based on the judgment result made by the state judgment portion.
9 Citations
7 Claims
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1. A projector comprising:
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a plurality of transmitters each of which transmits a first signal to a first light emitting pen; an imager that captures an image of light emitted from the first light emitting pen, the light being emitted from the first light emitting pen in response to a reception of the first signal; a receiver that receives an infrared light transmitted from another projector to a second light emitting pen; and a processor configured to act as a control unit that achieves, when the receiver receives the infrared light, synchronization of the timing of the first signal and the infrared light between the projector and the another projector such that the first signal and the infrared light are transmitted at a same time, wherein the control unit includes a detection section that detects, based on the image captured by the imager, a position where the first light emitting pen has emitted light, a state judgment portion that judges whether or not the synchronization with the another projector is stable, and a number determination portion that determines a number of transmitters to be used among the plurality of transmitters based on a judgment result made by the state judgment portion. - View Dependent Claims (2, 3, 4, 6, 7)
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5. A method for controlling a projector comprising:
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a first process of causing a plurality of transmitters to each transmit a first signal to a first light emitting pen; a second process of capturing an image of light emitted from the first light emitting pen, the light being emitted from the first light emitting pen in response to a reception of the first signal; a third process of detecting, based on the captured image, a position where the first light emitting pen has emitted the light; a fourth process of receiving an infrared light transmitted to a second light emitting pen from another projector; a fifth process of achieving, when the infrared light is received in the fourth process, synchronization of the timing of the first signal and the infrared light between the projector and the another projector such that the first signal and the infrared light are transmitted at a same time; a sixth process of judging whether or not the synchronization with the another projector is stable; and a seventh process of determining a number of transmitters to be used among the plurality of transmitters based on a judgment result made in the fourth process.
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Specification