KR100267987B1 - Method for processing time information of satellite broadcast receiver - Google Patents

Abstract

PURPOSE: A method for processing time information of a satellite broadcasting receiver is provided to automatically decode transmitted area codes, though a viewer does not select areas, and to automatically calculate a time difference information of a present area where a receiver is positioned. CONSTITUTION: A time information table including time information is received and stored. A standard time and date information are detected from the received time information, and decoded. A nation/area code included in the time information table is confirmed, to decode the nation/area code for reading corresponding time difference information. Whether a summer time is applied to the confirmed nation/area is decided, to increase/decrease time difference according to the application of the summer time of the nation/area. The increased/decreased time information is read. The time information correcting the applied summer time in the time information corresponding to the confirmed nation/area is added with the standard time, to set the added time as a present time.

Description

Time information processing method of satellite broadcasting receiver

The present invention relates to a method of processing time information of a satellite broadcast receiver, and more particularly, to a method of processing time information of a satellite broadcast receiver which differentiates and processes time information according to a situation change or a region change among received information of a satellite broadcast receiver.

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

Most current digital broadcasts follow the Moving Picture Expert Group (MPEG) standard.

The MPEG II 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 standards, the specification of MPEG II is a specification for a time-multiplexed signal sequence called a transport stream packet, in which a PID number is included in the header at the beginning of the packet. Listen.

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. The video standard and the audio standard are compressed. Regulation of video and audio signal sequence.

Video, audio and other additional information are time-multiplexed and carried in multiple transport stream packets, and signal sequences are identified by PID numbers.

1 is a block diagram showing a circuit configuration of a general digital satellite broadcasting receiver complying with the MPEG standard, and includes a tuner unit 10 for tuning, an A / D conversion unit 20 for digitizing an input signal, Link section for receiving digitally modulated QPK (Quadrature Phase Shift Keying) or QAM (Quarrature Amplitude Modulation) signals from antennas, performing detection, correcting errors, and outputting the transport signal sequence And a system decoder 200 for receiving a transport signal sequence, detecting a PID number, and performing demultiplexing for distinguishing a video signal sequence, an audio signal sequence, and an additional information signal sequence, from the system decoder. A microcomputer 1100 for controlling the output additional information signal string processing and the entire receiver, and receives a video signal sequence and an audio signal sequence from the microcomputer 1100, MPEG audio / video decoder (hereinafter referred to as MPEG A / V decoder) 300 which extends and outputs the video signal sequence compressed with Peg II and the audio signal sequence compressed with MPEG I, and the image from the MPEG A / V decoder 300. National Televistion System Committee (NTSC) encoder 400 which receives only a signal and outputs it as a luminance signal (Y) and a color signal (G) for display on a general TV (TV) or a monitor, and the MPEG A / A D / A converter 500 which receives only a voice signal from the V decoder 300 and converts a digital voice signal into an analog voice signal and outputs the same, and a ROM storing a program used for overall control of the receiver in the microcomputer 1100. (ROM) 600, a RAM 700 for storing variables necessary for the execution process, an SDRAM 800 for temporarily storing video and audio signal streams and sending them to the MPEG A / V decoder, The microcomputer 1100 is a system decoder 200. From the user interface consists of a microcomputer interface 900 and ssieyi S (CAS) interface 1000 for reflecting a specified action, such as a remote control or an operation key required to process and read the additional information.

2 is a flowchart illustrating a time information processing method for decoding time information of a digital satellite broadcasting receiver according to the prior art, comprising: receiving and decoding basic satellite broadcasting program information, and time information of the satellite broadcasting program information; Receiving through TDD (Time Date Talbe), decoding standard time / date information in the time information, storing after the decoding, and adding time difference to the standard time And displaying the current time / date on the screen.

For example, among the basic satellite program information provided by the satellite broadcasting system, information used to display time is transmitted through the TDT, which is used to display the current date and the current time. UTI, which transmits the date information through MJD (MJD: ModefiedJulian Date), which automatically displays the date until 2002 and the same day as leap month, and transmits the standard time of Greenwich Observatory in the UK. Since the time information is transmitted through UTC (Universal Time Code), the current time / date provided by Mugunghwa satellite broadcast is transmitted by adding the time difference with Korea (about 9 hours) to the world standard time transmitted. Doing.

Currently, Mugunghwa satellite broadcasting transmits UTC information, which is the world standard time, to display the current time. The receiver receives the world standard time and adds the time difference inside the receiver to display the current Korean time.

3 is a diagram showing the configuration of the TDT of the satellite broadcasting receiver according to the prior art, which shows the TDT of the current Mugunghwa satellite broadcasting regulation.

table_id is set to 0x70 in time_data_section. This is a code value indicating that it is a TDT. There is a bit (DVB_reserved, ISO_reserved) that is not currently used but is reserved for future use. Consists of UTC_time which provides time and date information.

Here, x means a variable used as a value defined in ETSI / DVB (European Telecommunication Service Information / Digital Video Broadcasting) TM1217 [12].

UTC_time contains time and date information of UTC and MJD. It consists of 40-bit fields. This field uses 16 bits to represent MJD. It is a 4-bit BCD code with 6 digits (hh; mm; ss: hour). / Minute / second) consists of a total of 40 bits using 24 bits.

In the example of UTC_time, 93/10/13 12:45:00 is represented as "0xC079124500", where 0xC079 is the date coded and 0x124500 is 12:45:00 seconds. Since the world standard time is displayed, the time difference is added to the standard time, that is, 9 hours, and the current time is displayed.

However, since the current range of the Mugunghwa satellite also includes regions other than the Korean Peninsula, which have different time lags, and the current time, such as daylight saving time, may change, transmitting only world standard time information has such a different time lag. If the current time is displayed in the area and if the current time is displayed during the summer time period, that is, it cannot prepare for regional and situation changes.

As such, in the satellite broadcasting service, if a satellite broadcasting service according to the prior art is provided by using a receiver manufactured in Korea, neighboring countries capable of broadcasting service of Korea and the time difference of Mugunghwa satellite may receive time information that is not suitable for the region. Will receive.

In addition, even if the country uses the same standard time as Korea, if you apply summer time in Korea, the broadcasting guide information provided will display the information after one hour on the screen. I can't.

The present invention has been made to solve the above problems, and an object thereof is to provide time information for each region even when the same satellite broadcasting receiver is used in all regions where a satellite broadcasting service is available.

1 is a block diagram showing a circuit configuration of a satellite broadcasting receiver according to the prior art.

2 is a flowchart showing a method of processing time information of FIG.

3 is a diagram illustrating a configuration of a time information table (TDT) of a satellite broadcast receiver according to the prior art.

4 is a diagram illustrating a configuration of a time information table (TDT) of a satellite broadcast receiver according to the present invention.

FIG. 5 is a diagram showing the configuration of information on a parallax information description syntax (Time_offset_descriptor) added to FIG.

FIG. 6 is a diagram illustrating a table of regional country codes and time difference information in a satellite broadcasting receiver. FIG.

7 illustrates a regional user graphical interface in accordance with the present invention.

8 illustrates a daylight savings time setting user graphical interface in accordance with the present invention.

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

<Explanation of symbols for main parts of drawing>

100: link unit 200: microcomputer

300: MPEG A / V decoder 400: NTSC encoder

500: D / A converter 600: ROM

700: DRAM 800: SDRAM

900: microcomputer interface 1000: CS interface

The present invention for achieving the above object by using a method to load the local code (Country Code) indicating the standard time and region, and the local time of each region in the TDT for transmitting time / date information The receiver is characterized in that the receiver can cope with a time difference such as summer time as well as a reception area with different time difference.

In addition, it receives and stores a time information table including time information among the received transmission information, detects and decodes standard time and date information from the received time information, and checks a country / region code included in the time information table. Decode the country / region code reading the time difference information, and determine whether the summer time is applied to the identified country / region code, subtract or subtract the time difference according to the summer time of the country / region, and read the information accordingly. And adding the time difference information corrected for the applied summer time time to the current time to the time difference information corresponding to the identified country / region, and setting the current time to the current time. By transmitting the parallax information in the satellite broadcasting reception information, the receiver simply transmits the received parallax information to the standard time. Apply features to help determine the current time.

In addition, it receives and stores a time information table including time information among the received transmission information, detects and decodes standard time and date information from the received time information, and corresponding country / region according to the country / region by user's request. Select the code to read the time difference information, or read and decode the country / region code transmitted when there is no user request, and check the country / region code included in the time information table according to the user's request. Read the information, determine whether the summer time is applied to the identified country / region code, subtract or subtract the time difference according to the summer time of the country / region, and read the time difference corresponding to the identified country / region. It consists of the process of setting the current time by adding the time difference information corrected the summer time applied to the standard time, By a graphical interface to read the parallax information corresponding to the selected country / region code as the user manually select the country / region that is characterized by using an another way.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the method for processing time information of satellite broadcast reception according to the present invention will be described in detail.

4 is a diagram illustrating a configuration of a TDT of a satellite broadcasting receiver according to an embodiment of the present invention, in which a disparity information description syntax (time_offset_descriptor) is added to a TDT according to the prior art of FIG. Will be sent by sending.

FIG. 5 is a diagram illustrating an information configuration of time_offset_desctiptor of FIG. 4. In detail, the descriptor_tag information indicating which descriptor is currently used, descriptor_length indicating the total number of descriptors, and a country code ( Coutry_Code), local code according to the time difference region (Country_Region_id), local time offset (local_time_offset), +,-local time offset polarity (local_time_offset_polarity) indicating the time difference, each local and country to show the time difference When time fluctuations such as summer time occur, ± 1 hour is given to the time difference information to prepare for fluctuations such as summer time as well as time difference.

FIG. 6 is a diagram illustrating a table of country codes and time difference information for each region in a satellite broadcasting receiver for explaining the present invention. FIG. 6 is a view illustrating time difference information for each country code and area code in the time difference information described above. It is composed of a country code for indicating each region, local time information, and polarity for deciding the addition or subtraction of the time difference information, so that the TDT according to the present invention can be used. The situation is illustrated using different time difference information for each country or region code.

In addition, FIGS. 7 and 8 implement summer time by region / country based on the mutual relationship with FIG. 6 so that the user can conveniently use the region when setting summer time by region / country. For example, the embodiment of the user graphic interface manufactured / configured is shown.

9 is a flowchart illustrating a time information processing method of a digital satellite broadcast receiver according to the present invention in summer time application.

First, receiving and decoding basic satellite broadcasting program information received by a satellite broadcasting receiver, receiving a table representing time information, that is, decoding a standard time and date by receiving a TDT, and a user graphic interface requested by a user. Selecting the corresponding country / region code for summer time, comparing the received country / region code, determining whether to apply summer time by transmitting only time difference information of the selected region, and After confirming that the summer time is being performed in the area, the summer time is performed by increasing or decreasing the hourly time difference to the currently received time difference information, and then summing up the standard time and time difference already received. There is one embodiment in which is displayed on the screen.

In another embodiment, by including the pre-calculated disparity information in the transmitted time information table information in the satellite broadcast reception information and transmitting the receiver, the receiver simply applies the received disparity information to the standard time to check the current time. Receiving and storing a time information table including time information, detecting and decoding standard time and date information from the received time information, and checking time / counter codes included in the time information table. Decoding the country / region code that reads the data, determining whether the summer time is applied to the identified country / region code, and subtracting or subtracting the time difference according to the summer time of the country / region, and reading the information accordingly. Time information obtained by correcting the applied summer time to the time difference information corresponding to the identified country / region Thereby an embodiment combined with standard time is composed of the step of setting the current time at which the final display time information of the current area on the screen.

The addition of the user graphic interface for the summer time application is to consider a case in which the time can be changed in addition to the local time difference, so that the time can be advanced one hour when the summer time is applied in the receiver without changing the local time at the transmitter.

In addition, if OFF is selected when the summer time is released, it can return to the standard time before the summer time.

The present invention relates to a time information processing method of a satellite broadcasting receiver, in which a region code transmitted automatically is decoded even when a viewer does not select a region, and automatically calculates time difference information of a region in which the receiver is currently located to check the time difference information. Therefore, accurate time information for the receiving area can be received.

In addition, since the summer time can be corrected according to a user's selection by determining whether to apply summer time, there is an effect of enabling a program reservation function for broadcasting information in any area in receiving a satellite broadcasting service.

Claims (4)

A satellite broadcast reception, comprising: receiving and storing a time information table including time information of received transmission information; Detecting and decoding standard time and date information from the received time information; Identifying a country / region code included in the time information table and decoding a country / region code for reading corresponding time difference information; Determining whether the summer time is being applied to the identified country / region code, subtracting or subtracting the time difference according to the summer time of the country / region, and reading the information accordingly; And adding the disparity information corrected to the applied summer time to the disparity information corresponding to the identified country / region to a current time to set the current time. The receiver of claim 1, wherein the receiver includes the disparity information calculated in advance in the transmitted time information table information in the satellite broadcasting reception information and transmits the received time disparity information to the standard time to confirm the current time. A time information processing method of a satellite broadcasting receiver. A satellite broadcast reception, comprising: receiving and storing a time information table including time information of received transmission information; Detecting and decoding standard time and date information from the received time information; Selecting a corresponding country / region code according to a country / region by a user request to read time difference information, or reading and decoding a country / region code transmitted when there is no user request; Checking the country / region code included in the time information table according to the user's request and reading corresponding time difference information; Determining whether the summer time is being applied to the identified country / region code, and subtracting and reading the time difference according to the summer time of the country / region; And adding the disparity information corrected to the applied summer time to the disparity information corresponding to the identified country / region to a current time to set the current time. 4. The method of claim 3, wherein the user's country / region code selection is specified by a user graphical interface.

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