Differentiated PSIP table update interval technology

摘要

An apparatus, method and data structure for generating at least one table in a broadcast environment, are provided. The apparatus includes a generator to generate an event information table (EIT) and an extended text table (ETT). The ETT has program guide information for an n-hour span and has a transmission interval. The ETT has a transmission interval and program description information according to the EIT. The transmission interval of the EIT is shorter than the transmission interval of the ETT.

主权项

1. A method of processing a digital television (DTV) transmission stream in a DTV receiver, the method comprising:
receiving in a DTV transmission stream a sequence of event information tables EIT0, EIT1, EIT2, and EIT3,
wherein the EIT0, EIT1, EIT2, and EIT3 contain program information covering different time spans,wherein a repetition interval of the EIT0 is less than a repetition interval of the EIT1,wherein the DTV transmission stream has a sequence of extended text tables ETT0, ETT1, ETT2, and ETT3,wherein the ETT0, ETT1, ETT2, and ETT3 contains program description information associated with the EIT0, EIT1, EIT2, and EIT3, respectively,wherein the repetition interval of the ETT3 is greater than a sum of the repetition interval of the EIT0 and the repetition interval of the EIT1; and presenting an electronic program guide using at least one of the EIT0, EIT1, EIT2, EIT3, ETT0, ETT1, ETT2, and ETT3.