Touch sensitive processing apparatus and method and system for detecting electronic board eraser

#The present invention relates to the field of electronic board eraser, and more particularly, to an electronic board eraser and system thereof of which using experience is like that of a traditional eraser.

#Blackboards or whiteboards are common tools used in traditional teaching. Users can use marker to write on the whiteboard and use eraser to erase marker's handwriting. Some manufacturers have made electronic whiteboard, which allows users to use stylus to move on it. The electronic whiteboard can sense tip position of stylus and display handwriting on electronic whiteboard to simulate the writing of the marker on the whiteboard. When users want to erase a part of the electronic whiteboard, settings of the stylus need to be changed, switching the marker mode to the eraser mode. However, compared with the traditional eraser, tip area of stylus is very small and is unable to erase a large area of mark. This is difficult for users to make use of the electronic whiteboard. Accordingly, it is necessary to have a device, which can simulate a traditional eraser, so that users can easily erase the larger area of the electronic whiteboard.

#According to an embodiment of the present invention, it provides an electronic board eraser including: a case; a wiping surface connecting to the case; at least three eraser electrodes; a driving circuit connecting to the at least three eraser electrodes; a sensing electrode; a sensing circuit connecting to the sensing electrode; and a processor connecting to the driving circuit and the sensing circuit, wherein the processor is configured to execute a program module for realizing the following steps: having the sensing circuit sense a beacon signal emitted from a touch panel; and having the driving circuit provide electrical signals to the at least three eraser electrodes after a time period since the beacon signal is emitted.

#The present invention can be more fully understood by reading the following detailed description of the preferred embodiments, with reference made to the accompanying drawings, wherein:

#FIG. 1 shows a schematic diagram of an electronic system 100 according to an embodiment of the present invention;

#FIG. 2 shows a block diagram of a touch sensitive processing apparatus 130 according to an embodiment of the present invention;

#Some embodiments of the present invention are described in detail below. However, in addition to the descriptions given below, the present invention can be applicable to other embodiments, and the scope of the present invention is not limited by such, rather by the scope of the claims. Moreover, for better understanding and clarity of the description, some components in the drawings may not necessary be drawn to scale, in which some may be exaggerated relative to others, and irrelevant parts are omitted.

#If any terms in this application conflict with terms used in any application(s) from which this application claims priority, or terms incorporated by reference into this application or the application(s) from which this application claims priority, a construction based on the terms as used or defined in this application should be applied.

#Referring to FIG. 1, it shows a schematic diagram of an electronic system 100 according to an embodiment of the present invention. The electronic system 100 includes a host 140 including a device that controls the overall operation of the electronic system 100, such as the central processing unit, the memory and the interface used to connect the peripheral input/output devices. The interface may include industrial standard interfaces, such as PCI, PCI-E, SATA, ATA, USB, UART, etc., or a proprietary interface. The host 140 connects to a display processing apparatus 150 via the interface, which is used to connect to a display 160 and to process the display contents of the display 160. The host 140 also connects to a touch sensitive processing apparatus 130 via the interface, which is used to connect a transparent touch panel 120 formed by multiple electrodes and to use the touch panel 120 with the multiple electrodes to detect approaching or touching object(s), such as external conductive object (such as hand 112), styluses 110A and 110B, electronic erasers (or electronic board erasers, thereinafter electronic board erasers) 115A and 115B, and so forth. The touch panel 120 includes multiple first electrodes 121 being parallel to a first axis and multiple second electrodes 122 being parallel to a second axis. The touch panel 120 may be set directly on or above the display 160, or the touch panel 120 can be integrated with the display 160 to become an embedded touch panel. The present invention does not limit the combination form of the touch panel 120 and the display 160.