US 2022/0021937 A1 · METHOD FOR RETRIEVING PROGRAM DATA AND CIRCUIT SYSTEM

Abstract

A method for retrieving a program data and a circuit system thereof are provided. The method that uses a dynamic packet identifier (PID) filter to retrieve the program data can be applied to a digital TV system. In the method, a master guide table is retrieved from a transport stream of digital TV signals, and a parsing method is executed to obtain a series of the PIDs. A polling method is used to obtain the program data corresponding to each of the PIDs. A filter window is applied to scan the PIDs for polling the program data corresponding to each of a group of the PIDs at once. After that, the filter window is shifted to a next group of the PIDs for polling the program data with respect to each of the PIDs, and an electronic program guide is accordingly formed.

Claims20

Dependent claims

A method for retrieving a program data, which is adapted to a circuit system, comprising:

retrieving a master guide table from a transport stream of digital TV signals;
performing a parsing method upon the master guide table so as to obtain a series of packet identifiers;
and
performing a polling method according to the packet identifiers so as to retrieve the program data corresponding to each of the packet identifiers;
wherein, in the polling method, the program data corresponding to each of the packet identifiers within a filter window is retrieved when the filter window is used to scan a set of the packet identifiers at once, afterwards another program data corresponding to a next set of packet identifiers is retrieved when moving the filter window to the next set of packet identifiers, and an electronic program guide is formed after the packet identifiers are completely scanned.

2 more elements

Dependencies are inferred from the claim text.

Method for retrieving program data and circuit system

Life of this patent

Method for retrieving program data and circuit system

Life of this patent

Abstract

Claims20