| 摘要 |
<p>A home video distribution and storage system provides for wireless distribution of signals from direct-to-home satellite services and Internet services. Antenna dishes outside the home are connected to a master set-top box (MSTB), which is connected to the main TV in the home. Inside the MSTB, the coax cables from the TV receivers are terminated in an RF switch box which can be either manually or electronically controlled. The output of the RF switch box is connected to one or more 6-MHz TV tuners, which are used to down convert the wide band signal containing up to 175 channels into the desired 6 MHz baseband signal. The desired baseband signal is then demodulated and demultiplexed into one or more MPEG2 audio/video signal program streams. The program streams are combined in a multiplexer that then aggregates all the selected program streams for accessibility by the various TV sets in the home. TV and Internet signals are fed both to the local TV set and to a base station radio transceiver. The transceiver sends the desired information to the other TV sets via local antennas and slave set top boxes (SSTBs). Each SSTB contains a mobile radio transceiver and thus becomes a wireless terminal to the wireless base station transceiver in the MSTB. This terminal can be used for either traditional or interactive TV viewing and/or Internet access. The MSTB can further include a video memory system (VMS) to provide centralized storage of video and/or Internet streams for access and use by TVs throughout the home.</p> |
