| 摘要 |
The functionality of portable wireless devices can be changed by providing programs written in a language, e.g. Java, producing a verifiable intermediary code (byte code). The intermediary code is translated to machine code in a node in the network before it is transferred to the wireless device on which it is to be executed. Several machine code variants of each program, translated using translators for different types of terminals, may exist. This enables use of the same source code for different terminal types and a division between software vendor, terminal vendor and network operator of the responsibility for carrying out the different functions involved in changing the functionality of a device, namely developing the source code of the program, compiling the source code into byte code, translating the byte code into machine code and transferring the machine code to the terminals on which it is to be run. |
