| 摘要 |
The invention relates to the generation of a video display on a display screen of a television set when the set has been selected to receive an audio only channel. In digital data television systems it is possible to select audio only channels typically produced from radio station transmissions. Conventionally when this type of channel is selected a blank screen with a channel identifying message is generated as the video display on the display screen as the television is required to be switched on to receive the audio channel. The invention provides for the generation of a display which changes condition during the selection of the audio channel and which may, in one embodiment, change condition in response to changes in the audio signal. |
