Method for rapidly updating television program of single-tuner set top box

Abstract

The invention discloses a method for rapidly updating a television program of a single-tuner set top box, relating to a digital television set top box technology and aiming at providing a method for realizing that a program updating process is automatically completed in background without influencing watching programs by a user when the television program of the single-tuner set top box is updated. The method is characterized by comprising the steps of: obtaining NIT (Network Information Table) and SDT (Service Description Table) data from a main frequency point by the set top box, when programs are updated, obtaining frequency point lists, program numbers, program names and other information of all programs from the NIT and SDT table data, establishing a temporary program database B, setting audio and video PID (Process Identification) information of each program in the program database B to be NULL, and when the program selected by the user in the audio and video PID information in the program database B is inconsistent with the information stored in the original system, capturing PAT (Program Associated Table) and PMT (Program Map Table) data sheets of the current frequency point so that audio and video PID information of all programs of the current frequency point is obtained. The invention is mainly used in the single-tuner digital television set top box.

Description

technical field [0001] The invention relates to digital TV set-top box technology, especially a method for designing a digital TV program update. Background technique [0002] With the rapid development of digital TV technology, the development of TV broadcast channel transmission standards has gradually matured, and the set-top box has become a necessary tool for life. In the low-end market, operators generally develop the market by depositing viewing fees and giving set-top boxes as gifts, so they put forward low-price and high-quality requirements for set-top boxes. At present, the low-end set-top boxes on the market are mainly single-tuner, but the existing single-tuner set-top box first prompts the user that the program changes when updating the program data. After the customer confirms the update program, the set-top box first searches for the NIT Data table (network information table, used to provide program number and information of each frequency point) and SDT dat...

AI Technical Summary

Problems solved by technology

At present, the low-end set-top boxes on the market are mainly single-tuner, but the existing single-tuner set-top box first prompts the user that the program changes when updating the program data. After the customer confirms the update program, the set-top box first searches for the NIT Data table (network information table, used to provide program number and information of each frequency point) and SDT data table (service description table, used to describe the name and provider of each program), and obtain the information of all program frequency points from them, and then Switch to each program frequency point one by one, search the PAT data table (program association table, used to provide the program name and program number) and PMT (program mapping table, used to provide the audio and video PID information of each program), and finally all the program frequency The program number, program name, and program audio and video PID information are saved, and a program update is completed. This process takes a long time, with an average of 2 minutes. When the whole process is in progress, the user will not be able to watch TV normally and must wait for the program to update. Continue watching after the update process

[0003] In order to solve the above-mentioned defects, the prior art adopts multiple tuners on the set-top box, so that the set-top box completes the update of the program while the user is watching TV programs, but such an approach will increase the production cost of the set-top box

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