| 摘要 |
<p>The system uses the games port to provide direct access to the system configuration. The sound control circuit (5) comprises a game port and is installed on a digital audiovisual reproduction system managed by a control system (51). The game port is used to create an access to the configuration of the audiovisual reproduction system and supplementary functions of the system management. A first terminal of the game port (1a) may be connected to earth, via a first switch (11), to create an alarm function responsive to the temperature of the audiovisual system. The second terminal (1b) of the game port may be connected to earth via a second switch, in order to increase the volume. A third terminal of the port (1c) may be connected to earth via a third switch in order to reduce the volume. A fourth terminal may be used for selective control of the volume of different sound sources.</p> |
