| 摘要 |
A method for caching an electronic program guide on a portable device (26) commences by downloading channel information and program information to the portable from a local cache (22) when the local cache contains relevant information. However, if the local cache lacks such information, the portable device downloads the channel information and program information from a server (12). The portable devices then builds a channel index and a program index from the downloaded channel information and program information, respectively to establish the electronic program guide on the portable device. |
