KR19990043040A - Television receiver with teletext information reading function by specifying search term - Google Patents

Abstract

The present invention relates to a television receiver that allows a user to extract and view only desired information among text information received by specifying a search word. The present invention relates to a key input unit (21, 22) for user key input, and the key input unit (21, 22). As a search word input command is input through the OSD, the OSD generating unit 25 outputs an image signal of the OSD guide caption for inputting the search word, and the search word storing the user-specified search word information input through the key input units 21 and 22. The information storage unit 23 extracts the teletext information from the video signal received by the antenna and stores the teletext information in a predetermined unit, and outputs a caption video signal corresponding to the extracted information, and among the text information stored according to a predetermined control signal. Teletext decoder 200 for reading text information of a page including a user-specified search term and outputting a corresponding text image signal A switching unit 26 for selectively switching the video signal output from the decoder 200 and the video signal input from the OSD generator 25 to output a screen output video signal, and the key input units 21 and 22. When the text information reading function is selected through the search word designation, the OSD control unit 25 controls the OSD generation unit 25 to output guide subtitles, and the teletext decoder 200 based on the data stored in the search term information storage unit 23. And a control unit 26 for controlling driving so that the text information of the page including the search word is reproduced and output.

Description

Television receiver with teletext information reading function by search word designation

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver having a teletext receiving function. In particular, the present invention provides a teletext information reading function by specifying a search word that allows a user to extract and view only desired information among received text information by specifying a search word. It relates to a television receiver.

In order to meet the various information needs of viewers recently, domestic and international news as well as information on economics, sports, tourism and leisure, cultural arts, life / science / broadcasting information, stock news, etc. have been edited into letters and figures, and then encoded. Therefore, a text multicasting program (hereinafter referred to as teletext) is provided that transmits in the form of a digital signal in a vertical retrace period of a video signal so that viewers can freely use desired information. It is a block diagram schematically showing a conventional television receiver equipped.

In FIG. 1, reference numeral 1 denotes an antenna for receiving an airwave broadcasting signal, 2 denotes a tuner for tuning a viewing channel selected by a user among broadcast signals received by the antenna 1, and 3 denotes a tuner ( IF amplification unit for amplifying and outputting the intermediate frequency (IF) signal output from 2), 4 is a video intermediate frequency (PIF) signal and audio intermediate frequency (SIF) from the intermediate frequency signal amplified by the IF amplifier (3) P / S separation section that separates and outputs signals.

Further, reference numeral 5 denotes a voice detector for detecting a voice signal from a voice intermediate frequency (SIF) signal separated and output from the P / S separator 4, and 6 denotes a voice output from the voice detector 5. Although not shown for the signal, a voice processor for performing voice processing such as bass, treble, volume, etc. according to a control signal from the microprocessor 16, which will be described later. It is an audio amplifier which amplifies the audio signal processed by the processor 6 and outputs it through the speaker 8 connected to the rear stage.

On the other hand, reference numeral 9 is an image detector for detecting an image signal from an image intermediate frequency (PIF) signal output from the P / S separation unit 4, and 10 is an image signal output from the image detector 9 Color, tint, brightness, and the like are processed according to control signals from the microprocessor 16 for R (Red), G (Green), and B (Blue). ) Is an image processor that outputs a signal.

Reference numeral 14 is a remote control device having a predetermined function key for receiving teletext data, 15 is a receiving unit for receiving an infrared signal transmitted from the remote control device 14 and converting it into an electrical code signal, and 16 It is a microprocessor as a control unit which controls the entire apparatus based on the code signal output from the receiving unit 15.

On the other hand, reference numeral 20 detects a teletext (TXT) data signal contained in a vertical retrace section of a broadcast signal according to a control signal output from the microprocessor 16, and processes the detected data signal to A teletext (TXT) decoder for outputting a text image signal, the teletext decoder 20 having a text (TXT) for detecting a teletext (TXT) data signal from the image signal output from the image detector (9). And a text signal processing stage 40 for processing the teletext signal detected by the text detecting terminal 30 and outputting a video signal corresponding to the text content. have.

That is, the conventional teletext receiving television receiver having the above-described configuration is provided with the microprocessor 16 in the teletext (TXT) decoder 20 as the user selects the teletext (TXT) mode through the remote control apparatus. By controlling the text signal processing stage 40 to extract and process the text signal from the broadcast signal, the viewer is provided for each field by operating the button keys installed on the remote control device while checking the information content output on the screen You can select the desired information from the text information and print it out in units of pages.

On the other hand, the teletext information is to enter the page containing the information desired by the user from the initial index screen in the menu method, so that the user wants the information from the index screen that is in the menu method through key operation whenever necessary. It is inconvenient to press the number of the area, and it is inefficient in time as it usually involves several key operations.

The present invention has been made in view of the above circumstances, and provides a television receiver with a teletext information reading function by specifying a search word that allows a user to quickly extract only the desired information from the received text information by specifying a search word. There is a purpose.

1 is a block diagram showing the internal structure of a conventional television receiver equipped with a teletext broadcast reception function;

2 is a block diagram showing the main configuration of a television receiver equipped with a teletext information reading function by specifying a search word according to an embodiment of the present invention;

3 is a diagram illustrating an output state of a guide screen for inputting a search word;

4 is a diagram illustrating a screen output state of search term related information.

******* Explanation of symbols for the main parts of the drawing *******

1 antenna 2 tuner (TUNER)

3: IF amplification unit 4: P / S separation unit

5: voice detector 6: voice processor

7: voice amplifier 8: speaker

9: Image detector 10: Image processor

11,26: switching unit 12: CRT driving unit

13: CRT 14,21: remote control device

15,22: receiver 16,24: microprocessor

23: query information storage unit 25: OSD generation unit

20,200: Teletext decoder 30,300: Text data detection stage

40,400: text signal processing stage

Teletext information reading function television receiver according to the present invention for realizing the above object is a key input unit (21, 22) for user key input, and the search word input command is input through the key input unit (21, 22) OSD generation unit 25 for outputting the video signal of the OSD guide caption for input, the search term information storage unit 23 for storing the user-specified search term information input through the key input unit (21, 22), received by the antenna Extracts the teletext information from the extracted video signal and stores it in a predetermined unit, outputs a caption video signal corresponding to the extracted information, and displays text information of a page including a user-specified search word among the stored text information according to a predetermined control signal. A teletext decoder 200 for reading and outputting a corresponding text image signal, the image signal output from the teletext decoder 200 and the OSD generator ( 25) the switching unit 26 for selectively switching the video signal input from the output to the screen output image signal, and the text information reading function by specifying the search word through the key input unit (21, 22) is selected, the OSD By controlling the generator 25 to output the guide subtitles and controlling the teletext decoder 200 based on the data stored in the search term information storage unit 23, the text information of the page including the search word is reproduced and output. It characterized in that it comprises a control unit 26 to control to.

That is, according to the present invention having the above-described configuration, the user can simply output the relevant information by setting only related search words without having to search for the teletext reception information one by one every time in order to obtain desired information.

Hereinafter, with reference to the accompanying drawings will be described an embodiment according to the present invention.

FIG. 2 is a block diagram showing a main configuration of a television receiver equipped with a teletext information reading function by designating a search word according to an embodiment of the present invention. Elements performing substantially the same functions as those shown in FIG. Are denoted by the same reference numerals and detailed description thereof will be omitted.

In FIG. 2, reference numeral 21 denotes a remote controller for user key input, 22 denotes a receiver which receives an infrared signal transmitted from the remote controller 21, converts it into an electrical code signal, and 23 denotes a remote controller. The search term information storage unit stores the user-specified search term information inputted through the reference numeral 21, and the term 24 controls the overall operation of the device based on the code signal output from the receiver 22 and the search term information storage unit ( And a microprocessor as a control unit that executes a caption information indexing function by specifying a search word based on the data stored in 23).

In the meantime, reference numeral 25 denotes an OSD generator which outputs an image signal of an OSD guide caption for inputting a search word under the control of the microprocessor 24, and 26 denotes the OSD generator 25 and the image processor 10. The switching unit for mixing the video signal input from the output to the CRT driver 12.

Further, reference numeral 200 extracts teletext information from the composite video signal output from the image detector 9 and outputs a text subtitle video signal corresponding to the extracted information, and also controls from the microprocessor 24. The teletext decoder 200 reads text information of a page including a search word specified by a user according to a signal and outputs a corresponding text image signal. The teletext decoder 200 includes a TXT data extractor 300a and a synchronization separator ( Text signal detection stage 300 composed of 300b, TXT data processing unit 400a, TXT data storage unit 400b, and TXT image processing unit 400c are provided.

Next, the operation of the device having the above configuration will be described.

When the user selects the teletext mode by operating the remote controller 21 while watching TV, the microprocessor 24 outputs a predetermined control signal to the teletext decoder 200 to execute a text data decoding function.

The text data decoding operation is performed by the TXT data processing unit 400a included in the teletext decoder 200 in response to a control signal applied from the microprocessor 24 based on the synchronization signal detected by the synchronization separation unit 300b. Accordingly, it is executed by outputting a sampling signal WIND for text data extraction. The TXT data extraction unit 300a extracts the teletext data contained in the vertical retrace section of the composite image signal CVS based on this. The text clock signal TCL and the text data signal TDT are output to the TXT data processor 400a.

As the text clock TCL and the text data signal TDT are obtained by the above process, the TXT data processing unit 400a decodes the text clock TCL signal and the text data TDT signal to decode the TXT image. The data required for the screen configuration is supplied to the processing unit 400c in the form of 8-bit parallel data for each line, and the data is accumulated and stored in the TXT data storage unit 400b in units of pages.

On the other hand, when the user who is watching the teletext screen selects a predetermined function key (not shown) provided in the remote control apparatus 21 for the information index through the search word, the microprocessor 24 causes the OSD generator 25 ), The OSD guide subtitle for inputting a search word is output on the screen as illustrated in FIG. 3.

In response to this, when a user operates a channel up / down key provided in the remote controller, the user inputs a search word according to a combination of consonants and vowels while moving the position of the cursor, and when the input is completed, the user presses the function key. 24 stores the search word information input by the user in the search word information storage unit 23 and then outputs a predetermined control command to the teletext decoder 200.

Meanwhile, when a predetermined control signal is applied from the microprocessor 24, the TXT data processing unit 400a in the teletext decoder 200 indexes a user-specified search term from the TXT data storage unit 400b and includes the corresponding search word. The text information of the page is read. Then, the read text information is output to the TXT image processor 400c to output a caption video signal corresponding to the read text data.

As a result, the caption video signal is transmitted to the CRT driving unit 12 through the switching unit 26, so that the text page including the user-specified search word is reproduced and output on the CRT screen as illustrated in FIG.

That is, according to the above embodiment, it is possible to realize a television receiver having a teletext information reading function by specifying a search word that allows a user to extract and view only desired information from the received text information by specifying a search word.

In addition, this invention is not limited to the said Example, It can implement in a various deformation | transformation in the range which does not deviate from the technical summary of this invention.

As described above, according to the present invention, the user can simply output relevant information by setting only relevant search words without searching the teletext reception information one by one every time in order to obtain desired information.

Claims (1)

Key input units 21 and 22 for user key input, OSD generation section 25 for outputting the video signal of the OSD guide caption for the search word input as the search word input command is input through the key input section (21, 22), A search term information storage unit 23 for storing user specified search term information input through the key input units 21 and 22, Extracts teletext information from video signal received by antenna, stores it in a certain unit, outputs caption video signal corresponding to the extracted information, and includes a user-specified search word among text information stored according to a predetermined control signal. A teletext decoder 200 for reading text information of the text and outputting a corresponding text image signal; A switching unit 26 for selectively switching a video signal output from the teletext decoder 200 and a video signal input from the OSD generator 25 to output a screen output video signal; When the text information reading function is selected through the key input units 21 and 22, the OSD control unit 25 controls the OSD generating unit to output guide subtitles and the data stored in the search term information storage unit 23. And a control unit 26 for controlling the teletext decoder 200 to control the teletext decoder 200 to reproduce and output the text information of the page including the search word. Television receiver.