| 摘要 |
A device management module 11 particularly for use in a receiver/decoder for a broadcast digital television system in which received signals are passed through a receiver to the receiver/decoder and thence to a television set. The module 11 couples incoming messages from port units 10 to application modules 12. A memory 13 coupled to the unit 11 has a buffer area 13-Band and a FIFO area 13-F, controlled by a buffer controller/handler 14-B and a FIFO controller/handler 14-F respectively. An incoming message can be passed into a buffer, and retrieved from the buffer by the application to which it is directed; two different operating modes are available for this. Alternatively, such a message can be passed to a FIFO; the FIFO handler acts as a low-level application which can pass the message on to a high-level application without that application having to take any action and without having to wait for the full message to be received. Messages passing through the FIFO are may be combined into an MPEG signal stream. <IMAGE> |
