The present invention relates to a whiteboard and method for orientation thereof, and particularly relates to an electromagnetic-and-interactive whiteboard with a battery-free pointer device and method of the electromagnetic-and-interactive whiteboard for finding the position of the battery-free pointer device.
In recent years, whiteboards are extensively applied in various meetings, seminars and schools for briefing, interpretation and teaching, and particularly, interactive whiteboards are used to be assistance devices for teaching in classroom and to establish high efficient e-teaching classrooms. For example, fifty percentage of classrooms in elementary schools and junior high schools of Britain use electromagnetic-and-interactive whiteboards for teaching in 2007, and the interactive whiteboards are also gradually used to assist in teaching in other countries, such as U.S., Australia, Hong Kong, Japan, Singapore, Mexico and Malaysia. In Taiwan, Ministry of Education provides some plans to assist part of schools in using the interactive whiteboards for teaching.
According to work principle of the interactive whiteboards, the interactive whiteboards can be classified into four types such as pressure-sensitive type, electromagnetic type, Ultrasonic type and two way infrared type. The electromagnetic type of interactive whiteboards (the electromagnetic-and-interactive whiteboards) are most often used in recent years. Referring to
In the orientation method of the conventional electromagnetic-and-interactive whiteboard 10 for finding or getting the position coordinate of the electromagnetic-and-interactive pen 30 on the conventional electromagnetic-and-interactive whiteboard 10, the electromagnetic signals emitted form the electromagnetic-and-interactive pen 30 are received by the antenna loops 22X and 22Y inside the whiteboard body 20, and then the position coordinate of the electromagnetic-and-interactive pen 30 is calculating according to the received electromagnetic signals. The intensity of the magnetic field is inversely proportional to the square of the distance. Therefore, the distance between the antenna loop and the electromagnetic-and-interactive pen 30 is longer, the intensity of the electromagnetic signals of the electromagnetic-and-interactive pen 30 received by the antenna loop is weaker. On the contrary, the distance between the antenna loop and the electromagnetic-and-interactive pen 30 is shorter, the intensity of the electromagnetic signals of the electromagnetic-and-interactive pen 30 received by the antenna loop is stronger. Therefore, the intensity of the electromagnetic signals received by all antenna loops is detected and collected, and then the precise position coordinate of the electromagnetic-and-interactive pen 30 can be gotten after analyzing and calculating according to the electromagnetic signals.
In recent years, with the trend for environmental protection, the use of the battery is reduced and replaced gradually because the waste battery pollutes environment. However, the electromagnetic-and-interactive pen 30 of the conventional electromagnetic-and-interactive whiteboard 10 has a need that a battery is provided to be the power supply of the electromagnetic-and-interactive pen 30. Therefore, the conventional electromagnetic-and-interactive whiteboard 10 can not meet the demand for environmental protection. However, when the battery is provided in the electromagnetic-and-interactive pen 30 to be the power for emitting electromagnetic signals, user can not know how much electricity the battery still has now. Therefore, the battery in the electromagnetic-and-interactive pen 30 can not be change timely. It is inconvenient to use the electromagnetic-and-interactive pen 30 because user can not immediately know that the battery has no electricity and can not change a new battery into the electromagnetic-and-interactive pen 30 in time. All of the present electromagnetic-and-interactive whiteboards, which we can see or buy, use the interactive pointer device with a battery, such as the electromagnetic-and-interactive pen with a battery to be the power for emitting electromagnetic signals. However, there is no whiteboard with battery-free pointer device to be provided presently.
Therefore, there is a need to provide an electromagnetic-and-interactive whiteboard with a battery-free pointer device and method of the electromagnetic-and-interactive whiteboard for finding the position of the battery-free pointer device. Therefore, a battery-free pointer device can be applied to a whiteboard but the position of the battery-free pointer device still can be found precisely. Furthermore, the pointer device can be work continuously without battery and the whiteboard can meet the demand for environmental protection and more practicability
An objective of this invention is to provide a whiteboard wherein a battery-free pointer device can be applied to the whiteboard and the position of the battery-free pointer device still can be found by the whiteboard precisely. Furthermore, a requirement of the battery can be omitted form the pointer device to meet the demand for environmental protection but the pointer device and the whiteboard still can be worked continuously without battery.
Another objective of this invention is to provide an orientation method of the whiteboard. By the method, a battery-free pointer device can be applied to the whiteboard and the position coordinate of the battery-free pointer device can be calculated and found by the whiteboard precisely. Furthermore, the antenna boards in the whiteboard do not interfered with each other and the position of the battery-free pointer device can be detected or found precisely without deviation.
In one embodiment of the present invention, a whiteboard having a battery-free pointer device applied to is disclosed. The battery-free pointer device is applied to an electromagnetic-and-interactive whiteboard in this invention. The whiteboard has a battery-free pointer device for handwriting input and function selection and a whiteboard body for the battery-free pointer device moving freely thereon. The whiteboard body has several antenna boards disposed therein for emitting electromagnetic power to the battery-free pointer device, for receiving electromagnetic signals emitted by the battery-free pointer device, for providing the power to the battery-free pointer device and for finding position of said battery-free pointer. Furthermore, each of the antenna boards has a corresponded signal handling device for controlling the antenna board to emit electromagnetic power and for managing the emitting order of the antenna boards. Besides, each of the signal handling devices is also used to inform the other signal handling devices corresponded to other antenna boards to turn on for emitting the electromagnetic power and to turn off for stopping emitting the electromagnetic power. In the whiteboard, each of the antenna boards is corresponded to one of the signal handling devices respectively so the battery-free pointer device can be applied to the whiteboard and the position of the battery-free pointer device still can be detected or found precisely without deviation. Furthermore, the whiteboard can meet the demand for environmental protection and more practicability because the battery-free pointer device is applied to the whiteboard.
In another embodiment of the present invention, an orientation method of the whiteboard for applying a battery-free pointer device to a whiteboard and for finding the precise position of the battery-free pointer device on the whiteboard is disclosed. The whiteboard has a battery-free pointer device, several antenna boards and several signal handling devices. The orientation method of the whiteboard comprises following steps: First, the signal handling devices control all of the antenna boards to emit electromagnetic power simultaneously. Next, the battery-free pointer device receives the electromagnetic power emitted from one of the antenna boards and stores the electromagnetic power, and the battery-free pointer device emits the electromagnetic signals by the stored electromagnetic power. When the antenna board which the battery-free pointer device is put on receives the electromagnetic signals emitted from the battery-free pointer device, the antenna board which the battery-free pointer device is put on informs the corresponded signal handling device that the electromagnetic signals are received by this antenna board. After the antenna board informs the signal handling device that the antenna board has received the electromagnetic signals, the signal handling device informs the other signal handling devices corresponded to the other antenna boards in the whiteboard (the antenna boards in the whiteboard without the battery-free pointer device putting on) to stop emitting electromagnetic power. When the signal handling devices corresponded to the antenna boards without the battery-free pointer device putting on receive the information passed from the signal handling devices corresponded to antenna board with the battery-free pointer device putting on, the signal handling devices corresponded to the antenna boards without the battery-free pointer device putting on stop the corresponded antenna boards from emitting the electromagnetic power respectively. By this method, not only the battery-free pointer device can be applied to the whiteboard, but also the precise position coordinate of the battery-free pointer device on the whiteboard can be calculated and gotten. In this orientation method, when one of the antenna boards receives the electromagnetic power, the other antenna boards stop emitting the electromagnetic power immediately. Therefore, the antenna boards do not interfered by the electromagnetic power emitted from the other antenna boards and the antenna board can find and trace the precise position of the battery-free pointer device without deviation.
Therefore, the effect achieved with the present invention is to provide a whiteboard and an orientation method of the whiteboard with the battery-free pointer device. The battery-free pointer device is applied to the whiteboard and the position of battery-free pointer device still can be found precisely by the whiteboard without deviation resulting from the interference between the antenna boards. Furthermore, the whiteboard of the present invention can meet the demand for environmental protection and more practicability because it has no need to use a battery as a power supply of the pointer device.
Although the present invention will be described in accordance with the embodiments shown below, one of ordinary skill in the art will readily recognize that there could be variations to the embodiments and those variations would be within the spirit and scope of the present invention. Accordingly, many modifications may be made by one of ordinary skill in the art without departing from the spirit and scope of the appended claims.
Referring to
The whiteboard body 200 has several antenna boards 201A, 201B, 201C, 201D and several signal handling devices 203a, 203b, 203c, 203d disposed therein. Each of the antenna boards 201A, 201B, 201C, 201D is corresponded to one of the signal handling devices 203a, 203b, 203c, 203d. As
In this embodiment, the whiteboard body 200 is composed of four antenna boards 201A, 201B, 201C, 201D, but not limit. The whiteboard body 200 can be composed of less or more antenna boards according to the desired size of whiteboard body. For example, if people need a smaller whiteboard, the whiteboard body can be composed of two antenna boards. In contrast, if people need a larger whiteboard, the whiteboard body can be composed of six, eight or more antenna boards.
Each of the antenna boards 201A, 201B, 201C, 201D has one or more antenna loops disposed therein for emitting the electromagnetic power and receiving the electromagnetic signals. Referring to
Referring to
The operation and the orientation method of the whiteboard 100 are illustrated as following description. Referring to
Next, the battery-free pointer device 300 receives the electromagnetic power emitted by one of the antenna boards 201A, 201B, 201C, 201D, and particular receives the electromagnetic power emitted by the antenna board which the battery-free pointer device 300 is put on. Take
After, the antenna board 201A receives the electromagnetic signals emitted from the battery-free pointer device 300 because the battery-free pointer device 300 is put on the antenna board 201A, and then the antenna board 201A informs the signal handling device 203a that the antenna board 201A has detected the battery-free pointer device 300 put on the antenna board 201A (step 404). At the same time of informing the antenna board 201A, the electromagnetic signals received by the antenna board 201A are sent to the signal handling device 203a by the antenna board 201A. After the signal handling device 203a receives the information and the electromagnetic signals, the signal handling device 203a informs the other signal handling devices 203b, 203c, 203d respectively corresponded to the other antenna boards 201B, 201C, 201D that the antenna board 201A has detected the battery-free pointer device 300. And at the same time, the signal handling device 203a also informs the other signal handling devices 203b, 203c, 203d to control the other antenna board 201B, 201C, 201D to stop emitting the electromagnetic power (step 406). When the other signal handling devices 203b, 203c, 203d receive the information sent from the signal handling device 203a, the signal handling devices 203b, 203c, 203d control their own corresponded antenna boards 201B, 201C, 201D to stop emitting the electromagnetic power (step 408) for preventing the antenna board 201A from the interference caused by the electromagnetic power emitted from the antenna boards 201B, 201C, 201D. Therefore, the antenna board 201A can detect and get the precise position of the battery-free pointer device 300 without deviation.
In foregoing operation and the orientation method of the whiteboard 100, after the antenna board 201A, which the battery-free pointer device 300 is put on (as
When the battery-free pointer device 300 move form the antenna board 201A to the antenna board adjacent to the antenna board 201A, such as the antenna board 201B, 201C, 201D, the antenna board 201A continuously scans to trace the battery-free pointer device 300. Furthermore, when the battery-free pointer device 300 move to the boundary between the antenna board 201A and the adjacent antenna board, the whiteboard 100 performs an informing step. When the battery-free pointer device 300 move from the antenna board 201A toward the boundary between the antenna board 201A and the adjacent antenna board, the signal handling device 203a of the antenna board 201A informs the antenna board, which the battery-free pointer device 300 move toward, to prepare for emitting the electromagnetic power and for detecting the position of the battery-free pointer device 300. Take
Besides, when the battery-free pointer device moves away from the antenna board, which the battery-free pointer device is put on previously, without moving to any other antenna boards of the whiteboard, the whiteboard performs a resetting step for informing all of the signal handling devices in the whiteboard to control all of the antenna boards to simultaneously emit the electromagnetic power again for searching the position of the battery-free pointer device. Take
Therefore, a whiteboard and an orientation method of the whiteboard with the battery-free pointer device are provides in this invention. The battery-free pointer device is applied to the whiteboard and the position of battery-free pointer device still can be found precisely by the whiteboard without deviation resulting from the interference between the antenna boards. Furthermore, the whiteboard of the present invention can meet the demand for environmental protection and more practicability because it has no need to use a battery as a power supply of the pointer device.
Number | Date | Country | Kind |
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098123283 | Jul 2009 | TW | national |