| 摘要 |
An apparatus and method for providing video on demand (VOD) service are disclosed, in which a transmission frequency of a program per channel is updated to detect transport stream identifier even in case that the transmission frequency is varied. The method for providing VOD service of a receiving system includes updating a channel map if a transmission frequency included in received service information is varied; and extracting and storing transport stream identifier by scanning a transmission frequency band of the channel map.
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