| 摘要 |
The invention provides a method of controlling communication in a communication system using a P1394 serial bus, and an electronic device for use in such a communication system, in which even if the system configuration in terms of connections of electronic devices changes when transmission of an information signal is in progress, the communication operation is controlled so that the time period is efficiently used. In the control of the input/output of the information signal, the time period required for transmitting the information signal is divided into a part which changes depending on the system configuration in terms of connections of electronic devices, and the other part which changes depending on the type of the information signal, so that these two parts are controlled separately. The electronic device is provided with a register for separately storing the part which changes depending on the system configuration in terms of connections of electronic devices and the other part which changes depending on the type of the information signal. More specifically, in the case of an output plug control register, these two parts are separately stored in an overhead ID field and a max payload size field.
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