| 摘要 |
The teletext standard allows broadcasters to transmit teletext information for display in an area of the video picture. Some people find the textual part of these "newsflash" pages difficult to read. This problem will deteriorate with the introduction of "level 2.5" teletext, which allows broadcasters to display video in a window of a teletext page. The invention alleviates the problem by enabling the user to suppress the video signal. |
