KR20050106319A - Method for processing time information in a satellite broadcasting receiver - Google Patents

Abstract

In accordance with an aspect of the present invention, there is provided a method of processing time information of a satellite broadcasting receiver, the method comprising: receiving a time information table including time information among information received from a satellite, decoding the received time information into standard time and date information, and standard time. And calculating a difference value between the date information and the user time information, comparing the difference value with the preset reference value, and maintaining the user time information when the difference value is greater than or equal to the preset reference value. Updating user time information with the standard time and date information.

As described above, the present invention selectively updates the time information according to the degree of the difference between the time information received from the satellite and the user time information, so that the time information of the satellite broadcasting receiver is incorrectly made by the time information received from the satellite of another region. Can be prevented from being set.

Description

Method of processing time information of satellite broadcasting receiver {METHOD FOR PROCESSING TIME INFORMATION IN A SATELLITE BROADCASTING RECEIVER}

The present invention relates to time information processing of a satellite broadcast receiver, and more particularly, to a time information processing method of a satellite broadcast receiver capable of preventing the satellite broadcast receiver from being set to wrong time information.

In general, in a satellite broadcasting service, when a transmitting station sends time information to a receiving station, the time difference information between the transmitting station's standard time and the receiving station is included in a PID (hereinafter, referred to as a PID: Packet identifier) of a transport stream packet. If it is loaded on the TDT, the receiver calculates and displays the standard time + time difference = the current time based on this.

Most current digital broadcasts follow the Moving Picturing Expert Group (MPEG) standard. The MPEG-2 standard for broadcasting is composed of system, video, and audio standards.The standard numbers of these standards are ISO / IEC 13818-1 (system), ISO / IEC 13818-2 (video), and ISO / IEC 13818-. 3 (audio).

Briefly referring to these specifications, the specification of MPEG II is a specification for a time-multiplexed signal string called a transport stream packet, in which a PID number is included in the header at the beginning of the packet. Contains.

The PID number is an identification number indicating whether a current packet is a video packet, an audio packet, or program specific information by providing information for demultiplexing a time multiplexed signal. This is a regulation on video and audio signal string. Video, audio and other additional information are time multiplexed and transmitted in multiple transport stream packets. Signal sequences are identified by PID numbers.

When the satellite broadcasting receiver processes the time information, the satellite broadcasting receiver basically receives and decodes the satellite broadcasting program information, receives the time information of the satellite broadcasting program through the TDT, and receives the received information through the TDT. Time information is decoded and stored as standard time and date information, and time difference is added to standard time to display the current time / date on the screen.

The satellite broadcast receiver receives and processes satellite broadcast signals from a plurality of satellites, such as satellites installed in multiple regions, for example, satellites providing satellite broadcasting in Germany and satellites providing satellite broadcasting in the UK in Europe. In setting the time information, the user mode, that is, the user can set the function manually.

Recently, a satellite broadcasting receiver including a recording device for recording a satellite broadcasting program, that is, a VCR, a DVR, and a recording device has been developed. A satellite broadcasting receiver having a recording function requires a scheduled recording function even when internal time information is accurate. It can be done properly.

When the user sets the time information manually, the satellite broadcasting receiver updates the time information in the receiver only when the time information received from the satellite and the time information set by the user are incorrect.

However, since the time information received from the satellite depends on the channel, that is, the region where the satellite is located, if the time information set by the user is changed, the user has to reset the time information according to the region where he or she resides. . That is, when the user sets the time information according to the German time and receives time information from a satellite that provides satellite broadcasting to another region, the UK or France, the satellite broadcasting receiver uses the time information received from the satellite of the UK or France. By updating the time information set by the user, there is a hassle that the user has to reset the time information according to their region.

In addition, when the time information of the satellite receiver is not accurate as described above, a satellite broadcast receiver having a reserved recording function may not record a satellite broadcast program at a time set by the user.

An object of the present invention is to solve such a problem of the prior art, by selectively updating the time information according to the degree of the difference between the time information received from the satellite and the user time information, the time received from satellites in other areas An object of the present invention is to provide a time information processing method of a satellite broadcast receiver which can prevent the time information of the satellite broadcast receiver from being incorrectly set.

In order to achieve the above object, the present invention provides a time processing method of a satellite broadcasting receiver in which user time information is stored, the method comprising: receiving a time information table including time information among information received from a satellite, and receiving the received time information Decoding the data into standard time and date information, calculating a difference value between the standard time and date information and the user time information, comparing the difference value with a preset reference value, and, as a result of the comparison, Maintaining the user time information when the difference value is greater than or equal to a preset reference value; otherwise, updating the user time information with the standard time and date information.

Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating an internal structure of a satellite broadcast receiver for explaining a process of processing time information according to the present invention.

Referring to FIG. 1, a satellite broadcast receiver includes a tuner unit 10 for tuning, an A / D converter 20 for digitizing an input signal, and a digitally modulated QPK (hereinafter referred to as QPSK: Quadrature Phase Shift Keying). Alternatively, QAM (hereinafter referred to as QAM: Quadrature Amplitude Modulation) signal is received from an antenna to detect and correct an error, and then the link unit 100 which outputs a transport signal sequence and a transport signal sequence are received to detect PID images. A system decoder 200 for performing demultiplexing that is divided into a signal sequence, a voice signal sequence, and an additional information signal sequence, and a system decoder 200 for controlling the additional information signal sequence processing output from the system decoder 200 and the entire receiver. The MCOM 1100 and the MCOM 1100 receive a video signal sequence and an audio signal sequence and receive the MPEG-2 compressed video signal sequence and the MPEG-1 audio signal sequence. The MPEG audio / video decoder (hereinafter referred to as the MPEG A / V decoder) 300 and the video signal from the MPEG A / V decoder 300 to output a luminance signal to be displayed on a TV or monitor. The digital audio signal is converted into an analog audio signal by receiving only the audio signal from the NTSC (NTSC) encoder 400 and the MPEG A / V decoder 300 that outputs the Y signal and the color signal G. D / A converter 500 for converting and outputting, ROM 600 storing a program used to control the entire receiver in the microcomputer 1100, and RAM storing variables necessary for the execution process. The SDRAM 800 and the microcomputer 1100 which store the video and audio signal streams for a while and send them to the MPEG A / V decoder 300 and the microcomputer 1100 read and process additional information from the system decoder 200. Assigned movements such as the required remote control or control keys Consists of a user interface, the microcontroller interface 900 and ssieyi S (CAS) interface 1000 for reflecting.

Here, the microcomputer 1100 processes time information during the additional information signal sequence processing, and updates time information of the satellite broadcasting receiver by comparing time information set by a user with time information included in the PID.

A process of processing time information by the satellite broadcasting receiver having the above configuration will be described with reference to FIG. 2. 2 is a flowchart illustrating a process of processing time information of a satellite broadcast receiver according to the present invention.

Referring to FIG. 2, first, the microcomputer 1100 operates the tuner unit 10 in response to a channel selected by a user, and the tuner unit 10 receives a satellite broadcast signal corresponding to a channel under the control of the microcomputer 1100. To the A / D converter 20. The A / D converter 20 digitizes and outputs the satellite broadcast signal received from the tuner unit 10, and the link unit 100 receives the digitally modulated Kewpiescape or QM signal to perform detection and error correction. After that, the transport signal sequence is output (S200). In the transport signal sequence, the system decoder 200 in the microcomputer 1100 receives the transport signal sequence and detects the PID number to perform demultiplexing to distinguish the product signal sequence, the voice signal sequence, and the additional information signal sequence.

At this time, the microcomputer 1100 decodes the time information table in the PID number, that is, the TDT into a standard time and date, and between the decoded standard time and time information set by a user in the satellite broadcasting receiver (hereinafter referred to as user time information). The difference value is calculated (S202, S204).

The microcomputer 1100 determines whether a difference between the decoded standard time and the time information set by the user in the satellite broadcasting receiver is greater than or equal to the preset reference value (S206).

As a result of the determination in step S206, when the difference value is greater than or equal to the preset reference value, the microcomputer 1100 maintains the time information set in the satellite broadcasting receiver as it is, otherwise the user time information set in the satellite broadcasting receiver is decoded using the decoded standard time. Update is made (S208, S210).

For example, if the difference is more than 10 minutes, the microcomputer 1100 does not update the time information in the satellite broadcasting receiver. If the difference is less than 10 minutes, the microcomputer 1100 updates the user time information to the decoded standard time.

That is, according to the present invention, if the difference between the time information received from the satellite and the user time information is greater than the preset reference value, the satellite broadcast receiver sets the wrong time information by ignoring the time information received from the satellite. Can be prevented.

As described above, the present invention selectively updates the time information according to the degree of the difference value between the time information received from the satellite and the user time information, and thus the time information of the satellite broadcasting receiver by the time information received from the satellite of another region. Can be set incorrectly.

In the foregoing description of the present invention, only one embodiment has been described, but it is obvious that the technology of the present invention can be easily modified by those skilled in the art. Such modified embodiments should be included in the technical spirit described in the claims of the present invention.

1 is a block diagram illustrating an internal structure of a satellite broadcast receiver for explaining a process of processing time information according to the present invention;

2 is a flowchart illustrating a process of processing time information of a satellite broadcast receiver according to the present invention.

<Description of the code | symbol about the principal part of drawing>

10: tuner 20: A / D converter

100: link unit 200: system decoder

300: MPEG A / V decoder 400: NTSC encoder

500: D / A converter 600: ROM

700: DRAM 800: SD RAM

900: microcomputer interface 1000: CAS interface

1100: Micom

Claims (1)

A time processing method of a satellite broadcasting receiver in which user time information is stored, Receiving a time information table including time information among the information received from the satellites; Decoding the received time information into standard time and date information; Calculating a difference value between the standard time and date information and the user time information; Comparing the difference value with a preset reference value; Maintaining the user time information when the difference is equal to or greater than a preset reference value; otherwise, updating the user time information with the standard time and date information. Time information processing method of a satellite broadcast receiver comprising a.