Abstract: An electronic white board with a built-in electromagnetic induction layer of wire lattice comprises: a writing input portion, a covering frame portion formed around the periphery of the electronic white board, and a control circuit. The writing input portion has multiple layers and is enclosed in the frame, and includes a surface writing layer, an underlayer, and an input induction layer which is formed between the surface writing layer and the underlayer, and is connected to the control circuit by its output. The input induction layer is a wire lattice winded and interlaced separately by wires along the X and Y axes, and the wires are insulated with each other at the crossing points. The area enclosed within each lattice unit constitutes one induction cell.

Abstract: An electronic whiteboard with built-in membrane antenna array lattice electromagnetic induction layer includes: a writing input portion; a covering frame provided around the periphery of the electronic whiteboard; and a control circuit; wherein, the writing input portion has multilayer structure and is enclosed in the frame, the said writing input portion includes a surface writing layer, an underlayer, and an input induction layer which is connected to the control circuit by its output; the said induction layer may be the antenna array printed on the insulation membrane and arranged along the X, Y axes, therein the area enclosed by each lattice unit constitutes one induction cell.

Abstract: An electronic whiteboard having flexible membrane electromagnetic generating device, at least including an electronic whiteboard main unit having an input induction section, a recognition controlling circuit, a signal output device inside, a writing layer as surface, a bottom layer as casing body, and a frame around, and an input pen. Wherein the induction section is composed of a covering layer, an electromagnetic induction generating layer and a bottom support bracket layer, wherein the base layer of the electromagnetic induction generating layer is an insulated flexible membrane, the surfaces of which are printed with an electromagnetic induction receiving antenna array, and a flexible membrane electromagnetic induction generating layer is constituted, the output of that layer is connected to the recognition controlling circuit, and the input pen has an electromagnetic wave generating device.

Abstract: A portable data converting and processing device with standard data interface, wherein the data processor is a connector-controller, a conversion-controller with functional processing or an integrative or separate combination of them. The connector and the data processor are integrated to form the body unit, and an electric interface for an external unit is set in said body unit. The present invention comprises three modules: a standard interface, a processor and an optional external unit, which can construct communication between storage devices and PC. The processor can obtain the ability to access data from various cards. The present invention can ensure the controlling and transmitting of data, and the external unit, such as converting processor, infrared receiver, RF module or identification module, or the storage devices are the fittings of peripheries.