Abstract: The present invention aims to implement a flexible transmission of the map data according to the performance of the mobile terminal of the receiver, the moving speed of the mobile terminal, or the communicating speed of the communication media. The dynamic priority setting unit determines and sets the priority to each of the parts constituting the map data with considering an improvement of readability of the guiding route, a necessity of real-time display, the static priority previously assigned to each part, and the user's request. The data amount determining unit calculates a total transmittable amount of map data according to the performance of the mobile terminal of the receiver, the moving speed of the mobile terminal, the communicating speed of the communication media and so on. The data amount determining unit also dynamically updates the total transmittable amount of map data according to change of the status.

Abstract: In an electrical discharge machining apparatus, by adjusting a machining condition changing switch, machining condition changing programs are called from a memory, the machining conditions called from a machining condition group and temporarily memorized in the memory are changed according to the programs, and machining is carried out by machining means according to the machining conditions changed.