| 摘要 |
<p>Elements required for a digital television receiver are divided into a plurality of digital signal processor blocks and a host microprocessor block. The blocks are connected by general buses, through which commands and streams of data are transferred to control the operations of the blocks. Plug-in extension cards detachable to the buses are provided for potential new services. The plug-in extension cards include hardware for implementing extended functions and store command scripts for the hardware. When a plug-in extension card is connected to a bus through an interface, command scripts are uploaded to the host microprocessor block that in turn operates the plug-in extension card based on the received command scripts.</p> |
