| 摘要 |
The invention consists of a set top interface box(fig 1,30) to allow a number of data sources (including video) to be connected to a television receiver. The user can select between sources using a handset(20) and includes picture in picture display facilities. The invention comprises an analogue multiplexer 31 to allow switching between the various sources 34,35,42,44,40 the output of which is connected to a video processor 39. The video processor 39 is connected to amongst others an audio control 46, a CPU 48, an infrared I/O device 50 and a modem 52. The set top unit (30) can also include facilities for decoding encrypted video signals(e.g. for pay per view) and decompressing video 38. In use the user would be presented with a graphical representation of their display options(fig 18) and could point and select(135) to determine which sources would go to which destinations(VCR, full screen, picture in picture). |
