KR100227106B1 - Color level converting display apparatus of renewal information data for teletext information - Google Patents

Abstract

The present invention relates to a color conversion display processing device for updating information data of teletext information, comprising: data receiving processing means (18, 26) for extracting teletext information data transmitted in a superimposed retrace period of a television broadcast signal; Teletext memory means 46 for storing the extracted teletext information data, for controlling the display processing of the received teletext information data, and for converting and controlling the display color of the data portion updated and changed over time. The program memory means 48 in which control program data is stored, the font memory means 50 in which character font data for character display of the teletext information is stored, and the control program data of the program memory means 48 under the control of the telegram. The text processing means 46 decodes the teletext information data from the text memory means 46 so as to decode the teletext information data. The teletext decoder 52 and the teletext decoder (50) which enable screen display processing by the character font data of 50 and detect and output update specification information designating a data portion which has been updated and changed over time. Display control means (54) for performing color conversion control on the character font of the updated and changed data portion using Color-Look-Up-Tables (CULT) 56 based on the update designation information detected from 52; ), Color conversion processing is performed according to the color conversion control on the character font of the updated and changed data portion from the display control means 54 by receiving the character font data corresponding to the teletext information data from the teletext decoder 52). Color control processing means 58 and 60 to perform operation control of the program memory means 48 and operation enable control of the teletext decoder 52, Teletext through the main control means 32 and the color conversion processing means 60 for controlling the operation of the display control means 54 as a result of receiving the update designation information from the teletext decoder 52. Characterized in that the display interface means for converting the character display data according to the information in the form of the R / G / B signal to output the screen display, characterized in that it is configured.

Description

Color conversion display processing device for update information data of teletext information

The present invention relates to a color conversion display processing apparatus for updating information data of teletext information. More particularly, the present invention relates to a case where teletext information data superimposed from a television broadcast signal is received from a television broadcast signal for display processing. The present invention relates to a teletext information update information data color conversion display processing apparatus which detects a data portion to be updated and changed in accordance with elapsed time and displays the screen by differentially performing color conversion.

As is well known, in a general television, a predetermined broadcast channel is tuned among television broadcast signals corresponding to a plurality of broadcast channels transmitted from a plurality of television broadcast stations, so that video / audio reproduction can be performed through video / audio processing. In the video format of a television broadcast signal which is tuned and reproduced in the case of the NTSC system, for example, two video fields (i.e., odd field and even field) each having 252.5 horizontal scanning lines are composed of one frame (one screen). Each image field is assigned a vertical retrace period of at least 21 horizontal scan lines including a vertical synchronization signal for 3 scan lines (3H) and equalization pulses for 3 horizontal scan lines at the front and rear ends of the vertical synchronization signal. By using this vertical retrace period, it is possible to superimpose additional information.

Accordingly, recently, a teletext broadcasting method has been adopted in which a video signal having a form of a character or a figure is superimposed and transmitted in the form of digital data using four of 10 to 21 lines in a vertical retrace period of a video signal. According to the teletext broadcasting, a pattern method of decomposing and transmitting characters or figures into various pixels for various service information such as news, business, weather forecast, stocks, entertainment, shopping, etc., and character codes of the characters or figures (B) Code method for converting and transmitting figure code, code method for transmitting a large amount of information, and hybrid method using pattern method with relatively high transmission speed are applied. In the case of hybrid method, 5.727272Mb / It consists of an NRZ signal with S (364 horizontal subcarrier frequency) so that its amplitude is 70% so that the level of '1' is 70% for the white level of 100% of the video signal. Eojinda.

On the other hand, in such a teletext information signal, the data packet consists of one horizontal scanning line (or period) unit. Each data packet is composed of a total of 296 bits having a 24-bit synchronizer and a 272-bit data portion. It is composed of CR (Clock Run-In) and Byte (Framing Code), and the 14-bit PFX (Prefix) of the data section identifies whether it is pattern or hybrid. It is composed of a service identification unit and a packet control value for controlling the transmission of data packets, and the data of 176 bits includes data of characters, graphics, and additional sound encoded as information data, and codes and error correction codes for controlling the data. (CRC) is included.

Accordingly, by using such a teletext information signal, it is possible to provide the viewer with the latest information that changes over time, such as a programming table of television broadcasting programs of each broadcasting channel, or various newly updateable information. In the case of information, it is possible to update a predetermined information program as a whole among a plurality of types of information programs or to partially update a plurality of letters or numbers included in a predetermined information program.

However, in such a teletext information signal, information data whose contents change over time such as a schedule of a television broadcast program or stock information or a weather forecast is continuously updated and transmitted within a given teletext display format. On the other hand, on the television side, the screen is displayed to have the same color as the data which has not been updated even for the newly updated changed data contents, which makes it difficult to easily recognize the update information by the viewer.

Accordingly, the present invention has been made in view of the above circumstances, and designates a data portion of teletext information updated and changed over time in a television having a teletext data processing function for receiving and displaying teletext information data. By receiving and recognizing update designation information, there is provided an update information data color conversion display processing apparatus for teletext information which enables screen display through color conversion of program table contents or letters or numbers of the corresponding update changed information data. The purpose is to.

According to the update information data color conversion display processing apparatus for teletext information according to the present invention for achieving the above object, in a television that performs video / audio playback through video / audio processing through tuning of a television broadcast signal, Data receiving processing means for extracting teletext information data superimposed over a vertical retrace period of a television broadcast signal, teletext memory means for storing the extracted teletext information data, and display processing of the received teletext information data Program memory means for storing control program data for converting and controlling the display color of the data portion updated and changed over time, font memory means for storing character font data for character display of the teletext information; Control program data of the program memory means. Decoding processing of the teletext information data from the teletext memory means by means of control enables screen display processing by the character font data of the font memory means, and designates a data portion updated and changed over time. Teletext decoder for detecting and outputting the update designation information, and display control for performing color conversion control on the character font of the data portion which has been updated and changed using the color lookup table (CULT) based on the update designation information detected from the teletext decoder. Means for receiving color font data according to the teletext information data from said teletext decoder and performing color conversion processing in accordance with color conversion control on the text font of the updated changed data portion from said display control means; Operation control of the program memory means And main control means for performing operation enable control of the teletext decoder and performing control for the operation of the display control means as a result of receiving the update designation information from the teletext decoder, and the color conversion processing means. It provides a color conversion display processing apparatus for update information data of the teletext information, comprising a display interface means for converting the character display data according to the teletext information through a R / G / B signal and outputting the displayable on the screen. do.

According to the present invention configured as described above, in a television having the reception and display processing function of the teletext information data, the data portion whose contents have been updated and changed over time is extracted from the received teletext information data. By detecting the designated update designation information, it is possible to display the program table contents of the data designated by the update designation information, and the display color of letters or numbers as converted colors for the data which has not been updated. .

1 is a block diagram showing a state in which the update information data color conversion display processing apparatus of teletext information according to the present invention is applied to a television;

2 is a block diagram showing a detailed configuration of the teletext processing unit shown in FIG. 1 according to a preferred embodiment of the present invention;

3 is a diagram illustrating a data format for each layer of teletext information data applied to the present invention;

4A and 4B are diagrams showing forms of update designation information designating a data portion of teletext information that is updated and changed over time according to a preferred embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

2: receiving antenna, 4: tuner,

6: Image IF unit, 8: Image detector unit,

10: video amplification unit, 12: video signal processing unit,

14: video output unit, 16: CRT,

18: Synchronous Separator, 20: Vertical / Horizontal Deflection Drive,

22: voice detector, 24: voice signal processor,

26: data slicer, 28: teletext processor,

30: function setting section, 32: control section,

34: input port, 36: memory,

38: CPU, 40: output port,

42: display interface, 44: data type determination,

46: teletext memory, 48: program memory,

50: font memory, 52: teletext decoder,

54: display controller, 56: CLUT,

58: display memory, 60: display character color conversion processing unit.

Hereinafter, the present invention configured as described above will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a state in which the update information data color conversion display processing apparatus of the teletext information according to the present invention is applied to a television. In the apparatus of the present invention, reference numeral 4 denotes a control unit 32 which will be described later. It receives the channel tuning data for the predetermined broadcast channel tuning and tunes the corresponding channel among the plurality of channels induced in the reception antenna 2, and mixes the local oscillation frequency signal generated by the channel tuning data to generate the intermediate frequency signal. The tuner outputs in the form of a form, and 6 denotes an image IF unit for intermediate frequency amplification of the selected intermediate frequency television broadcast signal.

Further, reference numeral 8 denotes an image detector which detects only an image signal from the intermediate frequency-amplified television broadcast signal, and 10 denotes an image amplifier that amplifies the detected image signal to a signal level at which image signal processing is possible.

Also, reference numeral 12 separates a luminance signal and a color difference signal from the signal-amplified image signal, and adjusts an image such as luminance adjustment, color demodulation, brightness adjustment, contrast adjustment, color level adjustment, and the like. The composite image is output by combining the composite image signal in the form of R / G / B signal through the level adjustment, and the teletext display signal applied through the display interface 42 from the teletext processing unit 28 to be described later. A video signal processor for synthesizing the signal and outputting the signal, and 14 denotes a video output unit driven to amplify the video signal processed composite video signal through a CRT screen so as to be reproduced.

Reference numeral 18 denotes a synchronization separator for separating a composite synchronization signal from the image signal from the image amplifier 10, and 20 denotes a horizontal / vertical signal based on the horizontal / vertical synchronization signal by the separated composite synchronization signal. A vertical / horizontal deflection driver for generating a deflection drive signal and driving for deflection of the horizontal / vertical deflection coils of the CRT 16 is shown.

Further, reference numeral 22 denotes an audio detector for detecting and detecting only an audio signal from an image intermediate frequency signal from the video IF unit 6, and 24 denotes an amplification of the separated detected audio signal and performs stereo signal processing or multiplex audio signals. An audio signal processing unit that performs volume control and sound quality adjustment through processing.

Reference numeral 26 denotes a data slicer which performs a data slice operation for extracting teletext information data included in the vertical retrace period by the composite synchronization signal separated from the synchronization separator 18, and 28 denotes the data slicer. Decoding the teletext information data extracted through (26), converting the data into a form of displayable data, and recognizing the update designation information included in the received teletext information, and the data portion of the corresponding update change. A teletext processing unit which performs a processing operation to convert a display color of a letter or a number to a screen and display the same.

Here, the teletext processing unit 28 determines the data type, such as whether it is program data, page data, or index data with respect to the teletext information data extracted from the data slicer 26, as shown in FIG. Controlled by a data type determination unit 44, a teletext memory 46 made of, for example, a DRAM for receiving and storing teletext information data after the type of the data is determined, and a control unit 32 described later. Program memory 48, which stores control program data for controlling the display operation of the color change for the data whose contents have been updated and changed over time, as well as the control of the display operation by decoding the received teletext information data. Font memo that stores various font font data for displaying the teletext information data. (50), the operation is enabled by the control unit 32 to be described later, controlled by the control program data of the program memory 48 to decode the teletext information data through the teletext memory 46, and the font. The teletext decoder 52 which outputs the font font data read out from the memory 50 so as to be displayed on the screen, and which detects and outputs the update designation information having designation information for the updated changed data included in the teletext information data. And a color look-up table (CLUT) 56 having a table of various color patterns, and specifying update from the teletext decoder 52 under the operation control of the control unit 32 described later. A display controller 54 for controlling the display of the converted color display in comparison with the data portion designated by the information, that is, the character font that has not been updated for the character font. The display memory 58 for storing character font data according to the teletext information from the teletext decoder 52 and the teletext information from the teletext decoder 52 by the display control of the display controller 54. And a display character color conversion processing unit 60 which performs data processing for displaying the character font data in a color form, and performs a process for differential color conversion for the updated and changed character fonts.

The display controller 54 also sets in advance the color converted for the character font of the data updated and changed in the teletext information data as one specific color.

The teletext information data processed to be displayed on the screen by the teletext processor 28 is sampled at 364 times the frequency (5.727272 Mbit / sec) of one video scanning period 1H as shown in FIG. Next, it consists of Layer 1, which transmits a data line composed of 296 bits in the horizontal scanning period and transmits the data lines. The data line unit is composed of a 16-bit bit sync signal, an 8-bit byte sync signal, and a 272-bit data packet. Then, the 82-bit check code is composed of Layer 2 to correct errors in units of data packets, and the information bits of the data packets are the same program as the SI (Service Identification) for transmitting the broadcast service method or transmission mode. Layer 3 consists of a 14-bit PFX (Prefix) with a PC (Packet Ciontrol) to indicate the continuity of the packets in the packet, and a 176-bit Data Block. In addition, the data block is a set of information data, which is composed of data group data, a data group header, a CRC code for error detection, an SOH indicating start / end, and program management data and pages for defining program data. It consists of layer 5 (layer 6) which consists of a header and page data.

Here, the update designation information recognized by the teletext decoder 52 designates a page content update designation bit which designates an update state of predetermined content of a page as shown in FIG. 4A, and an update state of the broadcast program table itself. Update information designation data having a program table update designation bit, a character update designation bit for specifying a character update, and a numeric update designation bit for designating a number update, and as shown in FIG. 4B. Update character position information having X bits indicating the position of the update character specified in accordance with the character update designation bit of the designated data, and update numeric position information indicating the position of the update number designated in accordance with the number update designation bit of the update information designation data. It includes the update information positioning data made.

Further, reference numeral 30 is composed of a matrix button unit provided in a predetermined portion of a remote controller for remote control or the main body of the main body, and performs overall function setting such as channel setting and volume adjustment, and also displays screens and page settings of teletext information data. A function setting section for performing function setting is shown.

Further, reference numeral 32 is a control unit which receives a key input signal according to the function setting from the function setting unit 30 and performs execution control on the overall function operation assigned to the television. The control unit 32 is the teletext. In addition to enabling control of the operation control of the program memory 48 and the operation of the teletext decoder 52 in the state where the data type is recognized according to the determination value from the data type determination unit 44 of the processing unit 28. In addition, the operation of the display controller 54 is controlled by recognizing update designation information, that is, update information designation data from the teletext decoder 52.

Here, the control unit 32 is an input port 34 for receiving input data from the peripheral operation circuit stage, a memory for storing the input data, and the result data according to the results of various comparison / operation processing (36), a timer (37) for time-keeping through a clock pulse generated with a crystal oscillator for generating an oscillation clock pulse, the recognition or comparison / operation of the input data input through the input port 38 The CPU 38 which performs a process and the output port 40 which outputs the control data according to the comparison / computation process result of the said CPU 38 to the exterior are comprised.

Reference numeral 42 denotes analog conversion of the character display data through the display character color conversion processing unit 60 of the teletext processing unit 28 and outputs to the image signal processing unit 12 in the form of an R / G / B signal. Indicates the display interface.

Next, the operation of the present invention made as described above will be described in detail with reference to the accompanying drawings.

First, when a television broadcast signal of a predetermined broadcast channel tuned through the tuner 4 is amplified by the intermediate frequency in the image IF unit 6, the image detector 8 separates the image signal from the intermediate frequency amplified television broadcast signal. The image amplifying unit 10 detects the detected video signal, and the image signal processing unit 12 performs image signal processing on the signal amplified image signal through the image output unit 14 to detect the CRT ( 16) Play through the screen.

At this time, the synchronization separator 18 separates the composite synchronization signal from the video signal, and the data slicer 26 extracts the teletext information data transmitted in the vertical retrace period by the separated composite synchronization signal. Done.

On the other hand, the data type determination unit 44 of the teletext processing unit 28 determines the data type of the extracted teletext information data and outputs the determination value, and the control unit 32 determines the data type determination unit 44. On the other hand, the data type is recognized by receiving the determination value from "), and the teletext memory 46 stores the teletext information data after the data type is determined.

Then, the teletext decoder 52 is controlled by the control program data from the program memory 48 to decode the teletext information data from the teletext memory 46 to font the character font for each data. While reading from the memory 50 and outputting, the update information specifying data shown in FIG. 4A is detected and output.

Accordingly, the display controller 54 is controlled by the control unit 32 to recognize the update character / numeric position information shown in FIG. 4B based on the update information designation data shown in FIG. 4A, and update it over time. The character font of the changed data is detected and control is performed to convert the character font into one color set in advance based on the color lookup table 56. The display character color conversion processing unit 60 converts the color of the display controller 54. According to the control, color conversion processing is performed on the character font of the updated and changed data in the character font data from the teletext decoder 52 and output.

As a result, the display interface 42 converts the character display data through the display character color conversion processing unit 60 into the form of an R / G / B signal and outputs the result to the image signal processing unit 12. The color of the data content updated and changed on the screen of the CRT 16 by the signal processing of the signal processing unit 12 is displayed as a differentiated color as compared to the data which is not updated.

According to the present invention made as described above, in the television with the teletext processing function, it is possible to convert the display color of the data portion whose contents have been updated and changed as time passes and to display the changed teletext information. The viewer has the advantage that the viewer can easily recognize the content of the beginning.

Claims (3)

In a television that performs video / audio reproduction through video / audio processing through tuning of a television broadcast signal, Data receiving processing means (18,26) for extracting teletext information data superimposed and transmitted in the vertical retrace period of said television broadcast signal; Teletext memory means 46 for storing the extracted teletext information data; Program memory means (48) having stored therein control program data for converting and controlling the display color of the data portion updated and changed as time passes, together with the control for display processing of the received teletext information data; Font memory means (50) storing character font data for character display of the teletext information; By decoding the teletext information data from the teletext memory means 46 by controlling the control program data of the program memory means 48, the screen display processing by the character font data of the font memory means 50 is performed. In addition, the teletext decoder 52 which detects and outputs the update designation information designating the data portion which has been updated and changed over time, Color conversion control for the text font of the updated and changed data portion using Color-Look-Up-Tables (CULT) 56 based on the update designation information detected from the teletext decoder 52 is performed. Display control means 54, Color that receives color font data corresponding to the teletext information data from the teletext decoder 52 and performs color conversion processing according to color conversion control on the text font of the updated changed data portion from the display control means 54. Conversion processing means (58, 60), The display control means (1) is performed as a result of the operation control of the program memory means 48 and the operation enable control of the teletext decoder 52, and the application of update specification information from the teletext decoder 52. Main control means 32 for controlling the operation of 54; And a display interface means (42) for converting the character display data according to the teletext information through the color conversion processing means (60) into a form of an R / G / B signal and outputting the screen for display. An update information data color conversion display processing apparatus for teletext information. 2. The update designation information according to claim 1, wherein the update designation information includes a page content update designation bit for designating an update state of predetermined contents of a page, a program table update designation designation bit for designating an update state of the broadcast program table itself, and an update of a character / number Update information data color conversion display processing for teletext information, comprising update information designation data each having designated character / number update designation bits, and update information position designation data comprising update character position information and update numeric position information Device. The display control means (54) according to claim 1 or 2, characterized in that the display control means (54) sets in advance a color to be converted with respect to a program table, a character or a number specified in the update specifying information as one specific color. An update information data color conversion display processing apparatus for teletext information.

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