KR100470352B1 - Method For Automatic Setting Of Broadcasting Station In DTV - Google Patents

Abstract

The present invention relates to a method for automatically setting a broadcast station name by detecting broadcast information of a digital television.

Particularly, the present invention extracts the name of the station included in the broadcast information of the tuned channel and detailed additional information about the program, and automatically moves to the position of the station corresponding to the extracted station from the list of station names displayed on the station name setting screen. Digitally display the program information (program name, channel number, start / end time, detailed description, etc.) of the broadcast station automatically and the program name of the tuned station with the user's simple confirmation key operation. A method for automatically setting broadcast information of a television.

Description

Method for Automatic Setting of Broadcasting Station in Digital Television {Method For Automatic Setting Of Broadcasting Station In DTV}

The present invention relates to a method of automatically setting a broadcast station name by detecting broadcast information of a digital television (DTV). In particular, the present invention extracts the station name and the detailed additional information about the program included in the broadcast information of the tuned channel, and automatically moves to the station name corresponding to the extracted station from the list of station names displayed on the station name setting screen. By setting a user's simple 1 key (confirmation key), the user can automatically set the station name for the tuned station and automatically set the broadcast information of the digital television to display detailed guide information related to the program of the corresponding broadcast channel. It is about a method.

1 is a block diagram showing the configuration of a conventional DTV receiver, which includes a CPU 101 for DTV control, a RAM 102 and a flash ROM 103 for storing data for DTV control, and a digital broadcast signal processing. A video display processor (VDP) 104, an SDRAM 105 in which data for processing the digital broadcast signal is stored, a tuner / VSB 106 for receiving a digital broadcast signal, and an analog signal processor for input analog signal processing ( 107), an audio processor 108 for decoding an audio signal, an I ² C driver 109 for driving an I ² C bus, an EEPROM 110 and an EPLD in which predetermined data is stored and output through the I ² C driver. It consists of 111.

The CPU and the RAM, ROM, such as a video display processor connected via a bus (100a), and transmitting data, and various analog chips and EEPROM, EPLD, etc. is based on the I ² C protocol I ² C bus (I ² C bus Data is transmitted through).

When the user selects to perform a predetermined function such as channel tuning or device control through a user interface means such as a remote controller, the CPU 101 controls the DTV in response to a user request. Data related to the control of the CPU 101 is stored and output in the RAM 102 and the flash ROM 103, and data and commands are transferred through the bus 100a. During channel tuning, the digital broadcast signal of the channel received and tuned by the tuner / VSB 106 is input to the video display processor 104. The video display processor 104 separates a voice, an image, and the like from the received DTV signal for each channel, handles a display for the DTV signal display, and supplies the processed DTV video signal to a display element such as a CRT. The analog signal processor 107 is responsible for processing the input analog signal, the EEPROM 110 stores and outputs data necessary for the CPU 101 to control various functions of the device through the I ² C driver 109, The EPLD 111 is responsible for data processing for signal processing in an analog chip. The CPU 101 controls all the above chips and implements a user interface through an OSD.

In the case of air broadcasting, cable broadcasting, etc. including the above-described DTV, when a broadcasting channel is selected and a broadcasting screen is displayed, the corresponding broadcasting station name or channel name is displayed along with the channel number, so that the user can conveniently view the broadcasting channel. It is equipped with broadcasting station name setting function for recognition. The broadcast station name setting function is a function for displaying a broadcast logo at the bottom of a channel number. FIG. 2 shows an example of a broadcast station name setting screen.

Referring to Fig. 2, a broadcast station name setting screen includes a tuned broadcast window (Window: small screen) 201, a list of broadcast station names 202 to be found and set by the user, and a function item 203. As shown in Fig. 2, the channel currently being broadcast is shown through the channel broadcasting window 201. In this case, when the user sets the broadcast station name, the broadcast station name 201a is displayed, the channel number 201b is displayed, and the image of the broadcast is displayed through the broadcast screen 201c. The contents can be switched using the channel switch key, and the channel can be changed only for the broadcast currently stored. In other words, the channel name does not have meaning for a channel that is not stored. Therefore, the channel can be changed only for the broadcasting currently stored.

If the user wants to set the station name on the station name setting screen as described above, the user should select and move the station name that he / she wants to set while viewing the current broadcast on the station name list on the right by using the remote controller keys. You can select and set a station name or perform an erase operation.

For example, referring to the case where 'CNN' is set in the broadcasting station name setting screen of FIG. 2, once the CNN broadcasting is tuned using the channel key, the corresponding broadcasting contents are displayed on the preset broadcasting window 201. When the CNN station is tuned as described above, by using the up, down, left, and right navigation keys, move to the position corresponding to the CNN (6 rows and 4 columns in the list in FIG. 2) by pressing the up and down left and right navigation keys, and press the confirm key again at the corresponding position. It is necessary to set the broadcast station name "CNN" for the tuned channel.

3 shows such a conventional broadcasting station name setting method. Step S11 is a step of outputting a broadcast station name screen as shown in FIG. The next step S12 is to perform tuning (tuning) using a channel key as a channel to be set by the user. The execution result of step S12 is that the broadcast of the channel selected by the user is tuned and displayed on the broadcast screen 201c. The next step S13 is to move the position to the name of a broadcasting station that matches the currently tuned broadcast using the up, down, left, and right navigation keys of the remote controller. That is, in FIG. 2, the user finds and moves the broadcasting station name to be set for the currently tuned channel from the broadcasting station name list 202. FIG. The next step S14 is to press the confirmation key of the remote control to set the moved station name. The next step (S15) is to set the broadcast station name of the position where the confirmation key is pressed to the broadcast station name of the channel currently tuned in. The broadcast station name related to the current position is displayed on a small screen, that is, the broadcast station name 201a of the preset broadcast window 201. ) To the location.

As described above, in the conventional broadcasting station name setting method, the user enters the broadcasting station name setting screen by key operation, first sets the channel name to be set using the channel key, and then uses the up, down, left, and right arrow keys. Navigate to the name of the station associated with the broadcast. At this time, as well as the name of the broadcasting station associated with the current broadcast can be moved and set to any position. If you want to set a station name after moving to an appropriate station name, press the confirm key and the station name to be set will be displayed on the upper left of the small screen, and press the confirm key again to disappear the station name (toggle operation). After exiting the broadcast station name setting screen using the cancel key, the user can recognize that the set broadcast station name is displayed on the screen together with the channel number by pressing the confirmation key on the video display screen (viewing screen).

As described above, in order to set the current broadcasting station name, the user must perform channel selection, up, down, left and right navigation key operation, and confirmation key operation one by one. Therefore, in order to set the broadcast station name, it is inconvenient to recognize whether there is a corresponding broadcast station name on the broadcast station name list 202, and if the broadcast station name exists, the operation of moving to the location is repeated. In addition, when the number of broadcasting station names exceeds the number that can be shown on one screen, the number of pages is divided into several pages. In this case, the page shift needs to be performed.

In addition, in this case, it is not easy to recognize or find a broadcast station name because the user cannot be fully aware of exactly which broadcast station the currently tuned broadcast channel corresponds to and exactly what broadcast logo the broadcast channel corresponds to. Of course, in some broadcasts, the current country's logo may be displayed in the upper right corner of the screen. However, since most broadcast stations do not yet have such a mark, it is inconvenient to recognize and set the broadcast station name.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for automatically setting a station name of a digital television so that the name of the station for the tuned broadcast of the digital television receiver can be automatically found and easily set.

Another object of the present invention is to extract the information on the corresponding station from the broadcast information of the current channel selected by the user to set the station name, and to move separately to the position of the station name corresponding to the extracted current station on the station name list The present invention provides a method for automatically setting a station name of a digital television so that the station name can be automatically set without moving a key and automatically set by the user at a corresponding position with a user's confirmation key.

Another object of the present invention is to extract the information on the broadcast contents from the broadcast information of the current channel selected by the user to set the station name, and display the extracted information at a glance near the selected station window (small screen) By doing so, it is possible to enhance the recognition and understanding of information on the broadcast.

1 is a block diagram of a digital television

2 is an example of a conventional broadcasting station name setting screen

3 is a flowchart of a conventional broadcasting station name setting method;

4 is a flowchart of a method for automatically setting a broadcast station name according to the present invention.

5 is an example of an automatic station name setting screen according to the present invention.

6 illustrates a PSIP table structure for explaining the present invention.

7 illustrates an ETT structure for explaining the present invention.

8 is a block diagram of a broadcast information extraction unit for explaining the present invention;

9 is a flowchart of a digital stream analysis process for explaining the present invention.

10 is a flowchart of a broadcast station name extraction and search process in the present invention;

11 is a flowchart of a process of extracting and displaying program information in a broadcast station name screen in the present invention.

<Explanation of symbols for the main parts of the drawings>

501: Tuning broadcast window 501a: Broadcasting station name

501b: Channel number 501c: Broadcast screen

502: Station name list 502a: Automatically shifted station name

503: Function Item 504: Broadcast Information Screen

800: microprocessor 801: antenna

802: DTV synchronization detection unit 803: error correction unit

804: demultiplexer 805: video decoder

806: video display unit

In order to achieve the above object, a method for automatically setting a station name of a digital television according to the present invention comprises: performing a channel selection on a station name setting screen by a user, extracting broadcast information of the selected channel, and recognizing a broadcast station. Performing automatic movement to a broadcast station name corresponding to the recognized broadcast station on a list of broadcast station names; setting a corresponding broadcast station name as a broadcast station name of the tuned channel according to a confirmation key input for the moved broadcast station name Displaying; Characterized in that comprises a.

In addition, the method for automatically setting a station name of the digital television of the present invention for achieving the above object, the step of extracting the broadcast information of the tuned channel and recognizing predetermined user-provided information about the broadcast together with the broadcast station name, the recognition And displaying the user-provided information along with the broadcast station name in the periphery of the preset broadcast window.

In addition, the method for automatically setting a broadcasting station name of the digital television of the present invention for achieving the above object is characterized in that the user-provided information includes a broadcasting channel name, a broadcasting station name, a program name, a broadcasting time, and a brief program description.

In addition, the method for automatically setting a station name of a digital television according to the present invention for achieving the above object, extracts the station name information (short_name) in the VCT (Virtual Channel Table) from the broadcast information to recognize the corresponding station, EIT (Event Information Table) Recognizing the program name, the start time, the length of the event by extracting the information in the), and recognizes and displays a detailed description of the current broadcast program in the Extended Text Table (ETT).

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of a method for automatically setting a broadcast station name of a digital television of the present invention made as described above will be described.

First, Figure 4 shows the overall procedure of the automatic station name setting method of the present invention, Figure 5 shows an example of the automatic station name setting screen according to the present invention.

When the broadcast station name automatic setting function is performed, the first step (S21) outputs the broadcast station name screen. That is, as shown in Fig. 5, a broadcasting station name setting screen including a preset broadcasting window 501, a broadcasting station name list 502, and a function item 503 is displayed.

In the next step S22, the user tunes to the channel for which the user wants to set the broadcast station name using the channel key of the remote controller. When the channel is tuned, the broadcast contents of the channel are displayed on the broadcast screen 501c. The next step (S23) is the step of detecting the broadcast information of the channel that is currently tuned and displayed, and moves to a position corresponding to the detected broadcast station on the station name list 502, and outputting simple information related to the current broadcast. to be. That is, through the extraction of the information on the broadcast currently displayed on the broadcast screen 501c of the preset broadcast window 501, the user and the user provision information on the broadcast station are recognized, and the name of the broadcast station at the position corresponding to the broadcast station. Moving to 502a, the user-provided information is displayed on the broadcast information screen 504. Here, the user-provided information displays a current broadcast channel, a broadcast station name, a program name, a broadcast time, a brief description of the program, and the like.

The next step S24 is to determine the confirmation key input. In this step, when the user presses the confirmation key, the station name 502a of the moved position is automatically set to the station name of the channel currently displayed in the preset channel window 501 and the station name 501a is output.

That is, according to the method for automatically setting a station name according to the present invention, if a channel is tuned to a channel for which a station name is to be set using a channel key, the DTV's CPU (or microprocessor) is currently broadcasting. The information is detected and moved at once to a station name position that matches the detected station, after which the user can set the station name by pressing the confirmation key or cancel the station name setting.

With this series of procedures, the user can conveniently set the station name for the desired channel, and also, when setting the station name, simple information about the station is displayed, thereby improving recognition and understanding of the station information. You can expect.

In the method for automatically setting the station name of the digital television of the present invention described above, the station name is automatically extracted using the station name extracted from the broadcast information and simple user-provided information (channel number, program name, broadcast time, description, etc.) for the broadcast. We have seen how the settings and information are displayed. Therefore, in the present invention, in order to automatically set the broadcast station name, it is necessary to detect broadcast information.

6 to 11 show in more detail a method of automatically setting a broadcast station name according to the extraction of such broadcast information and its interpretation.

As is known, North American digital TV broadcasting has established the digital broadcasting service standard through ATSC, 8VSB for terrestrial, 64QAM for cable, QPSK for satellite, and digital video for MPEG-2 method is applied, audio is AC-3 standard / Dolby digital method, and PSIP (Program Service Information Protocol) standard is applied as system standard, major-minor channel number, video / audio stream information, Provide program details and more. That is, the digital stream is composed of video, audio, additional information, channel information, and the like, and they are multiplexed according to the PSIP standard. Therefore, in the DTV receiver, the received digital stream is demultiplexed according to the PSIP standard and reconstructed into a series of video / audio streams and additional information streams.

First, FIG. 6 shows a basic structure of a program service information protocol (PSIP) including broadcast information. PSIP can be viewed as an aggregate consisting of a specific element table of each general DTV service. As shown in FIG. 6, the PSIP packet is input as a stream having a PID of 0x1FFB among the digital streams input to the DTV receiver, and when these streams are analyzed, the STT (System Time Table) which basically constitutes four tables, that is, time information, is analyzed. (601), RRT (Rating Region Table) 602 constituting regional grade information, and MGT (Master Guide Table) 603 having PID information of EIT (Event Information Table) constituting detailed information of each program. And a VCT (Virtual Channel Table) 604 that configures information (number of channels, video / audio PID, etc.) of the actual digital channel in the RF channel.

The Extended Text Table (ETT) is an optional stream used to describe a virtual channel and an event in detail as shown in FIG. 7, and includes extended text message streams 701 and 702.

Therefore, by demultiplexing and decoding all the broadcast information according to the PSIP standard, it is possible to detect a desired broadcast station name and information on the corresponding broadcast.

FIG. 8 is a block diagram of the broadcast information extracting unit, including a microprocessor 800 for receiving DTV broadcast, extracting and decoding information, an antenna 810 for receiving a DTV RF signal, and a DTV signal received through the antenna. A DTV sync detection unit 802 for detecting a synchronization signal in the second embodiment, an error correction unit (FEC) 803 for outputting an error corrected stream from the sync detection unit, and a demultiplexer for demultiplexing the error corrected stream. 804, a video decoder 805 for decoding a video stream among the demultiplexed streams, and a video display unit 806 for outputting the decoded video data to a display element such as a CRT. .

The DTV signal received by the antenna 801 passes through the DTV synchronization detector 802 and the error correction unit 803 corrects an error for the digital video stream, and the demultiplexer 804 searches for a stream having PAT table information. The microprocessor 800 constructs a corresponding table therefrom, configures a PMT table, and finds a VCT table among streams having a PID of 0x1FFB to distinguish whether the stream currently input is a PSIP stream. Done. After that, the digital stream analysis is completed by finding the stream constituting the EIT table and configuring the EIT table. The video decoder 805 decodes the video stream, and the video display 806 converts the signal into a format suitable for a display device such as a CRT, and outputs the signal.

FIG. 9 shows the digital stream analysis process shown in FIG. 8 in detail. The first step S31 and the second step S32 are the processes of starting and completing the PAT analysis, and the following steps S33 and S34 are the processes of starting and completing the PMT analysis. The next step (S35) is to retrieve the VCT input, and when the VCT input is found (i.e., when the VCT table is found) in the next step (S36 and S37), the process of starting and completing the VCT analysis is performed. . Subsequent steps S38, S39, and S40 are processes of searching for a stream constituting the EIT table and completing the analysis.

By using the analyzed VCT table and the EIT table as described above, the name of a broadcasting station required by the present invention and user-provided information for improving user understanding of the corresponding broadcast are extracted, set, and displayed.

Fig. 10 shows a process of extracting a station name in a stream based on the analyzed table and searching for a built-in station index (a station name displayed as a list on the screen), and Fig. 11 shows a station name. Shows the process of extracting and displaying program information from the screen.

First, referring to Figure 10, the first step (S51) is a step for performing the tuning of the RF channel as described above. Next step S52 is a step of starting TVCT decoding, and next steps S53 and S54 are steps of extracting a broadcast station name in the VCT, and the broadcast station name may extract 'Short_Name' in the VCT. The next step S55 is to decode the station name, and the next step S56, S57 and S58 compares the decoded station name with an arbitrary label Label [l] to search for a matching station name. It is a process. The next step S59 is to move to the matched label, i.e., the station name.

FIG. 11 illustrates a process of extracting and displaying information to be provided to the user, that is, program information, from the broadcasting station name setting screen as described above.

The first step (S61) is to enter the channel label menu, that is, the station name setting menu. The next step S62 is to tune the current RF channel, and the next steps S63 and S64 are to start TVCT decoding and complete the analysis. That is, the short_name is extracted from the VCT to detect a broadcast station name, which represents a virtual channel in seven 16-bit character codes encoded in seven Unicode. In addition, the major channel (major_channel) and minor channel (minor_channel) in the VCT is also extracted. The step of displaying the result of performing the VCT analysis is the next step (S65). In other words, the station name and channel (channel number) obtained by the VCT analysis result are displayed.

Next, a process of extracting and displaying simple broadcast information (S66-S68) is performed. First, the EIT decoding is started in step S66, and the completion of the EIT analysis is determined in the next step S67. When the EIT analysis is completed, 'title_text ()' representing the program name in the EIT, 'start_time' representing the start time, and 'length_in_seconds' representing the event length are extracted. Therefore, in the next step S68, the program name and start / end time are displayed using the extracted information.

The next step (S69, S70) is a process to start the ETT decoding and complete the analysis. When the ETT analysis is completed, a detailed description of the current broadcast program can be detected from 'extended_text_message ()'. Therefore, in the next step S71, all program information such as the broadcast station name, channel number, program name, start / end time of the corresponding program, and detailed description of the programs thus far displayed are displayed. An example of the information displayed is as shown in FIG.

The present invention is to detect the broadcast information from the DTV broadcast signal to automatically set the station name automatically. Therefore, when the user sets the broadcast station name, the cumbersome operation of up, down, left, and right navigation keys for selecting the broadcast station name is omitted, and thus, the broadcast station name can be set very easily.

In addition, the present invention provides the program name, start / end time, detailed description and the like for the broadcast in setting the broadcast station name, thereby contributing to the simple recognition and understanding enhancement of the summary level of the broadcast.

Claims (4)

Performing tuning of a channel to be set by a user on a broadcasting station name setting screen; recognizing a broadcasting station by extracting broadcasting information of the tuned channel; automatically moving to a broadcasting station name corresponding to the recognized broadcasting station on a broadcasting station name list; Performing the step of setting a corresponding broadcasting station name according to the confirmation key input of the moved broadcasting station name and displaying the broadcasting station name of the tuned channel; Broadcasting station name automatic setting method of the digital television comprising a. The method of claim 1, further comprising: extracting broadcast information of the tuned channel and recognizing predetermined user-provided information on the broadcast together with the broadcast station name; and tuning the recognized user-provided information along with the broadcast station name. The station name automatic setting method of the digital television, characterized in that it further comprises the step of displaying in the vicinity. The method of claim 2, wherein the user-provided information includes a broadcast channel name, a broadcast station name, a program name, a broadcast time, and a brief program description. The method of claim 1, wherein the broadcaster name information (short_name) is extracted from the broadcast information in the VCT (Virtual Channel Table) to recognize the corresponding station, and the information in the event information table (EIT) is extracted to extract the program name, start time, and event. A method for automatically setting a broadcast station name for a digital television, comprising recognizing a length and recognizing and displaying a detailed description of the current broadcast program in an extended text table (ETT).