Projector and control method
First Claim
1. A projector that projects an image on a projection surface and that is capable of recognizing a position where a first light emitting pen has emitted light, the projector comprising:
- a transmitter which transmits a first signal to the 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; and
a processor configured to act as a control unit that achieves, when the receiver receives the infrared light transmitted from another projector to a second light emitting pen, synchronization of a 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 includes;
a synchronization judgment portion that judges whether or not the projector is synchronized with the another projector; and
a state judgment portion that judges whether or not the synchronization with the another projector is stable.
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Accused Products
Abstract
A projector includes a transmitter that transmits a signal, a receiver that receives a signal transmitted from another projector, and a control unit that achieves synchronization of the signals between the projector and the another projector based on the signal transmitted from the another projector and received by the receiver. The control unit includes a synchronization judgment portion that judges whether or not the projector is synchronized with the another projector, and a state judgment portion that judges whether or not the synchronization with the another projector is stable.
7 Citations
10 Claims
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1. A projector that projects an image on a projection surface and that is capable of recognizing a position where a first light emitting pen has emitted light, the projector comprising:
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a transmitter which transmits a first signal to the 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; and a processor configured to act as a control unit that achieves, when the receiver receives the infrared light transmitted from another projector to a second light emitting pen, synchronization of a 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 synchronization judgment portion that judges whether or not the projector is synchronized with the another projector; and a state judgment portion that judges whether or not the synchronization with the another projector is stable. - View Dependent Claims (2, 3, 4, 5)
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6. A method for controlling a projector that projects an image on a projection surface and that is capable of recognizing a position where a first light emitting pen has emitted light, the method comprising:
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transmitting a first signal to the first light emitting pen; 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; achieving, when an infrared light transmitted from another projector to a second light emitting pen is received, synchronization of a 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; judging whether or not the projector is synchronized with the another projector; and judging whether or not the synchronization with the another projector is stable. - View Dependent Claims (7, 8, 9, 10)
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Specification