| 摘要 |
A network personal video recorder (NPVR) service is modified so that some or all of the programs on an NPVR enabled channel are deprived of a fast-forward capability otherwise afforded by the NPVR service. As a result, a user cannot fast-forward one such program to skip commercials and product placement advertisements therein. In addition, some or all of the programs on an NPVR enabled channel cannot be freely time-shifted without regard for their broadcast schedule. Rather, in an illustrative embodiment, the end time of one such program is restrictively extended past its scheduled end time.
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