Abstract: A data displaying device for bidirectionally communicating with a far end service station by wired or wireless way is disclosed. According to the data sets displayed on the screen. the data displaying device selectively emits a request updating signal to a service station to request the service station to transfer part of updating data. Thus, the service station may reduce the transfer data amount greatly, thus the load of bandwidth is decreased. When a request updating signal is emitted to a service station, the data range of requesting a service station to send ordered updating data includes a data range of screen display.

Abstract: An electronic payment device and its method using an unbalanced binary tree are disclosed. The total unit n of the amount of money that user purchases is decomposed first into a Matrix of p rows×q columns. Then, a first one-way function h1 and a second one-way function h2 serve to define the one-way function operation of the first row and each column, respectively. When two numbers of operation times a and b are calculated by their formulas respectively, they are substituted into formula Xk=h2b(h1a(Xpq)). Namely, by the first one-way function h1, a times of operation is performed, and then by the second one-way function h2, b times of operation is performed, thus, a first data Xk of current consumption can be derived rapidly. The present invention has only a few times of operation, thus the calculating efficiency is improved greatly.

Abstract: A method according to the invention comprises the following steps. At first, a first layer of film is coated over a micro-control apparatus having a plurality of ejecting elements. Next, a plurality of ink chambers, a plurality of ink channels, and a plurality of supporting cylinders are simultaneously formed in the first layer of film by photolithography. More specifically, the plurality of supporting cylinders is located within the plurality of ink channels. Thereafter, a layer of liquid medium is coated over the first layer of film. A photosensitive film is provided over the first layer of film, and then a plurality of ink orifices is formed therein at positions respectively corresponding to the plurality of ink chambers by photolithography. Finally, the micro-control apparatus is connected to a signal input means.

Abstract: A rapid checking method for determining whether an object is located within a field of vision is provided. A computer serves to process the states of a 3D image so as to determine whether the object is located within the field of vision. An efficient calculation process is used. In the invention, the 3D coordinates of eight vertexes of an object and the boundary box formed by equations of six planes are employed in operation. By determining the relationship of the vertexes and the planes, it is determined whether an object is within the field of vision.

Abstract: A multipurpose communication device for use with a video display device and an input device to transmit data to a remote multipurpose communication device of another user through a telephone line, or to receive data from a remote multipurpose communication device. The multipurpose communication device is capable of determining if the remote multipurpose communication device of the remote party is of the same type, and capable of calling a corresponding application program when receiving a communication from the remote party, so that the transmitting data can be dispatched and received by different application programs.

Abstract: A method for the test of a testing platform comprises a series of steps performed by a computer. Wherein the computer software structure includes a tested object menu, a plurality of test programs, a test instruction subprogram, a speech instruction subprogram, a driver program database, and a manager for receiving a test results. The method according to the present invention has several stages so that another tested object is further tested, the current test program can be used. Moreover, a speech prompt function is further provided, which may match new computer software construction.