PORTABLE FM DATA RADIO CHANNEL SYSTEM

摘要

PURPOSE: A portable FM data radio channel system is provided to bidirectionally perform communication through a wireless modem instead of unilaterally performing the communication in an FM DARC(Data Radio Channel) terminal, and to portably use the system, thereby giving economical benefits to a user. CONSTITUTION: A CPU(10) overall controls a system. A mobile OS(Operating System) is ported in a flash memory(14). A wireless modem(12) transceives data by performing communication with a DARC center based on a wireless communication protocol. A program updating connector(16) downloads updated data of a program in the flash memory(14). An accounting unit(24) supplies paid information. A touch panel(28) has touch screen and touch pen functions. A graphic IC(22) displays necessary information in graphics through an LCD(30). A VRAM(Video RAM)(26) stores the graphic information. An SRAM memory(18) and a battery(20) are comprised.