KR100214626B1 - Information editing device and self-diagnosis device of tv system - Google Patents

Abstract

The present invention relates to an information editing apparatus and a self-diagnostic apparatus of a TV system. In particular, the service information inserted in a specific section of the TV signal is edited to be displayed as an image or inserted into the specific section to identify the operation state of the system. It was created to do.

The present invention includes an information editing unit 205 for receiving a composite video signal through the image detecting unit 203 and the ghost removing unit 204 and editing information of a specific section, and the signal edited by the information editing unit 205. A service information processing unit 209 for converting a signal into a signal that can be displayed as an image, a video display unit 210 for receiving an output signal from the information editing unit 205 and the service information processing unit 209, and displaying video and service information; The timing controller 206 extracts vertical and horizontal synchronization signals VsHs from the composite image signal CVBS of the image detector 203, outputs a clock CLK, and outputs a specific section recognition signal. And a microcomputer 208 for outputting data on a specific section position in response to a user's key input, and outputting the section section position information to the timing controller 207 by decoding the output data of the microcomputer 208. It is also composed of the addition and the decoding unit 207 to output information to be edited on the editing information (205).

Description

TV editing system and self diagnostic device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television system. In particular, the information editing apparatus and self-diagnosis of a television system for decoding service information on a specific section of a television signal to display service information or to determine an operating state of the system using the insertion information. Relates to a device.

The TV system scans a signal according to an image to display an image, and uses a synchronization signal to stably perform the scanning method.

1 shows a synchronization signal of a TV signal.

In FIG. 1 (a), t1 is a vertical blanking period of the TV signal and includes various pulses having a width corresponding to 21 times the horizontal synchronization signal Hs, that is, 21H.

In addition, t3 has a width corresponding to 3H as a vertical synchronization section, and six home pulses having a width of 1 / 2H exist.

The 3H periods immediately before and immediately after the vertical synchronization section t3 are equalization periods t2 and t4, respectively, and have a width of 3H.

The equalization period t2 (t4) and the vertical synchronization period t3, that is, the 9H period, serve to stably maintain the horizontal and vertical synchronization of the TV system.

That is, by generating the frequency of the equalization pulse and the vertical registration pulse Vs twice the frequency of the horizontal synchronization pulse Hs, the detection of the vertical synchronization pulse Vs using the integrating circuit is stabilized, and the vertical blanking period t1. In order to ensure continuity of horizontal synchronization, interlaced scanning is performed correctly.

In the NTSC system, two fields are interlaced to display one screen, and a synchronization signal is shown in FIG. 1 (b).

In the odd field, the vertical blanking period begins with the horizontal blanking period and in phase, and the vertical scan and the horizontal scan end at the same time.

And, the even field is the vertical scan starts in the middle of the horizontal scan and ends in the middle of the horizontal scan through the vertical blanking period.

Currently, the TV system provides various services using a part of the vertical blanking period. The transmission control for communicating the broadcasting station relay period in the period of 14H to 21H during the vertical blanking period, the signal and character multiplexing and the function for the feature search. And a service information signal such as KBPS, and a ghost cancellation reference signal (GCR) signal.

In general, a service information processing apparatus of a TV system for performing information service and ghost elimination may output an intermediate frequency signal IF by selecting a specific channel among broadcast signals received by the antenna 101, as shown in the block diagram of FIG. A video detector 103 for outputting a composite video signal CVBS with the tuner 102, the intermediate frequency signal IF of the tuner 102, and a composite video signal of the video detector 103 A ghost removal unit 104 for removing the ghost components mixed into the CVBS and outputting the ghost component to the image display unit 108 and a caption processing unit for performing caption processing by inputting the output signal CVBS of the image detection unit 103 ( 105 and a text multicast processing unit 106 for processing a signal and outputting the signal to the video display unit 108 when the output signal CVBS of the video detector 103 is text multicast. Service information on the output signal (CVBS) It consists of the information processing unit 107 for outputting the group image display unit 108. The

Referring to the operation of the TV system as follows.

When the broadcast signal is received from the antenna 101, the tuner 102 selects a frequency of a channel desired by the user and outputs the intermediate frequency signal IF, and the image detector 103 moderates the intermediate frequency signal IF. After detection, the composite video signal CVBS having the waveform shown in FIG. 1 is output.

Accordingly, the ghost removing unit 104 removes the ghost component mixed in the composite video signal CVBS to display a clear image on the screen of the image display unit 108.

In addition, the information processor 107 receives the composite video signal CVBS and decodes the service information inserted between 14H and 21H of the vertical blanking interval so that the service information is displayed on the screen of the image display unit 105.

The information processor 107 is configured as shown in the block diagram of FIG. 3, and the operation thereof will be described below.

When the composite image signal CVBS output from the image detector 103 is input, the sync separator 111 separates horizontal and vertical sync signals and simultaneously generates a clock, and the timing generator 112 generates the sync separator 111. ) Receives a horizontal and vertical synchronization signal and a clock, and outputs a timing control signal to the converter 113 and the signal processor 114 for processing the information data carried in the vertical blanking period.

At this time, the signal converter 113 converts the information data contained in the vertical blanking section of the composite image signal CVBS input from the image detector 103 according to the control signal of the timing generator 112 so as to be capable of signal processing. 114 processes and edits the converted information data and outputs the converted information data as a signal capable of image processing.

Accordingly, the image synthesizer 115 synthesizes the composite image signal CVBS of the image detector 103 and the signal output from the signal processor 114 and outputs the synthesized image to the image display unit 108.

The image synthesizer 115 may switch the composite image signal CVBS of the image detector 103 and the output signal of the signal processor 114 to output the image display unit 108 as necessary.

The ghost removing unit 104 is configured as shown in the block diagram of FIG. 4, and the operation thereof will be described below.

When the composite image signal CVBS is input from the image detector 103, the sync separator 121 separates the vertical and horizontal sync signals and simultaneously generates a clock. The timing generator 122 of the filter coefficient calculator 127 The controller operates by controlling to output a timing control signal for recognizing a reference signal section by inputting the vertical and horizontal synchronization signals and the clock of the synchronization separator 121.

The analog / digital converter 123 converts the composite image CVBS of the image detector 103 into a digital signal.

At this time, when the ghost component is included in the composite image signal CVBS of the image detector 103 as shown in FIG. 5 (a), the fifth (b) is stored in the memory 126 by the timing control signal of the timing generator 122. Like the diagram, the ghost cancellation reference signal is stored.

Accordingly, the filter coefficient calculator 127 compares the ghost elimination reference signal such as the fifth (c) degree stored in the memory 128 with the ghost elimination reference signal such as the fifth (b) degree stored in the memory 126. Generate filter coefficients to remove

At this time, the ghost removal filter 124 receives the filter coefficients of the filter coefficient calculator 127 and removes the ghost components mixed in the digital output signal of the analog / digital converter 123.

Therefore, when the digital-to-analog converter 125 converts the output signal of the ghost cancellation filter 124 into an analog signal and outputs it to the image display unit 108, an image from which ghost components are removed is displayed on the screen of the image display unit 108. It is done.

However, such a conventional technology has a problem in that when circuits for ghost elimination and service information processing are jointly embedded, each circuit may include a synchronous separator and a timing generator, which may cause a cost increase and a malfunction.

For example, an error may be caused by a ghost component when displaying service information since circuits for specific functions are connected in parallel.

In addition, when the composite video signal CVBS is input as shown in FIG. 6 (a), a reference signal is detected for ghost elimination. However, as shown in FIG. 6 (b), when an information signal is inserted and input, an error occurs when detecting the reference signal section. There is a problem that can occur

In addition, since the information data of the blanking section is also recorded when the information data is recorded, there is a disadvantage in that information which is out of date may be displayed during playback.

The present invention is to edit the service information inserted in a specific section of the TV signal in order to improve the disadvantages of the prior art to display the image or to insert the information for grasping the operating state of the system in the specific section and input the corresponding function block It is an object of the present invention to provide an information editing apparatus and a self-diagnostic apparatus of a television system, which is designed to detect the resultant data and determine an operation state of the system. .

The present invention can eliminate the inconvenience of recording unnecessary information by erasing unnecessary information when editing service information inserted in a specific section of the TV signal, and recording and reproducing the information.

1 is a waveform diagram showing a vertical blanking spread of a TV signal.

2 is a block diagram of a service information processing apparatus of a general TV system.

FIG. 3 is a detailed block diagram of the information processor of FIG.

4 is a detailed block diagram of the ghost removal unit in FIG.

5 is a waveform diagram in FIG.

6 is a waveform diagram according to information editing in FIG.

7 is a block diagram of an editing apparatus according to the present invention.

8 is a waveform diagram according to information editing in FIG.

9 is a block diagram showing a case where the politics of FIG. 7 is applied.

10 is a block diagram of a self-diagnosis apparatus according to the present invention.

* Explanation of symbols for main parts of the drawings

201, 211: antenna 202, 212: tuner

203, 213: video detector 204, 214: ghost remover

205 and 215 information editing unit 206 and 216 timing control unit

207, 220-1 ~ 220-3: Decoder 208, 217: Microcomputer

209: service information processing unit 210, 221: video display unit

218: Encoder 219-1 to 219-3: Function Block

222: comparator 223: operation state display unit

The present invention provides a tuning means for tuning a specific channel among broadcast reception signals, an image detection means for outputting a composite video signal as an input of an intermediate frequency signal of the tuning means, and a combination of the video detection means. Ghost removing means for removing ghost components mixed in the video signal, information editing means for receiving the output signal of the ghost removing means and editing information of a specific section, and a signal capable of displaying the extracted information of the information editing means as an image. Service information processing means for converting the information into; and image display means for receiving the output signals of the information editing means and the service information processing means and displaying image and service information; In addition to separating the synchronization signal, the system clock outputs a specific section recognition signal. An imming control means, control means for outputting data for a specific section position according to a user's key input, and outputting section data for specific section position to the timing control section by decoding the output data of the control section and the information And decoding means for outputting information to be edited to the editing means.

Further, the present invention provides tuning means for tuning a desired channel in a broadcast reception signal to achieve the above object, video detection means for outputting a composite video signal as an input of an intermediate frequency signal of the tuning means, and this video detection means. Ghost removal means for removing ghost components mixed in the composite video signal of the information, and information editing means for inserting self-diagnostic information into a specific section of the composite video signal outputted from the ghost removal means and outputting it to the first to third functional blocks. And timing control means for outputting a specific section recognition signal to the ghost removing means and the information editing means by separating vertical and horizontal synchronizing signals from the composite video signal of the video detecting means and calculating the specific section position information. The first to third decoders for decoding the output data of the first to third functional blocks, respectively, and the information editing means to the first to third decoder. An encoder for outputting self-diagnosis information for determining an operating state of a third functional block, a comparator for comparing the stored data of the encoder and the output data of the first to third decoders, and a specific section position in the timing control means. A control means for outputting information and outputting self-diagnosis data of the encoder and determining an operating state of the first to third functional blocks by inputting a comparison result of the comparator, and displaying a determination result of the control means. It consists of an operation status display means.

Hereinafter, the present invention will be described in detail with reference to the drawings.

According to an exemplary embodiment of the present invention, as illustrated in FIG. 7, a tuner 202 that tunes a specific channel among broadcast signals received by the antenna 201 and outputs an intermediate frequency signal IF, and the middle of the tuner 202. An image detector 203 for receiving the frequency signal IF and outputting the composite video signal CVBS, and a ghost removal unit for removing ghost components mixed in the composite video signal CVBS of the image detector 203. 204, an information editing unit 205 that receives the output signal of the ghost removing unit 204, and edits information of a specific section; and converts the signal edited by the information editing unit 205 into a signal that can be displayed as an image. Of the service information processing unit 209, the video display unit 210 which receives the output signals of the information editing unit 205 and the service information processing unit 209 to display video and service information, and the video detection unit 203. Vertical and horizontal sync signal (Vs) (Hs) as input of composite video signal (CVBS) A timing controller 206 for extracting and outputting a clock CLK and outputting a specific section recognition signal, a microcomputer 208 for outputting data for a specific section position according to a key input by a user, and the microcomputer And a decoding unit 207 which decodes the output data of 208 to output specific section position information to the timing control unit 207 and outputs information to be edited to the information editing unit 205. The timing controller 206 is a synchronous separator for separating the vertical and horizontal synchronizing signals Vs (Hs) of the TV signal, and the vertical and horizontal synchronizing signals Vs (Hs) and the decoder 207 separated from the synchronous separator. The output signal is composed of a timing generator for outputting various timing signals required for the system.

When there is a plurality of service information, the timing generator simultaneously outputs a plurality of timing signals for performing a corresponding function.

Referring to the operation and effect of the embodiment of the present invention configured as described above are as follows.

When the high frequency TV signal received from the antenna 801 is input to the tuner 802, a frequency of a desired channel is selected to output an intermediate frequency signal IF, and the image detector 203 receiving the intermediate frequency signal IF. ) Outputs a composite video signal (CVBS).

At this time, the timing controller 206 extracts the vertical and horizontal synchronization signals Vs (Hs) from the composite image signal CVBS output from the image detector 203 and generates a clock CLK for operating the system. do.

When the information service mode is set, the microcomputer 208 outputs specific section position data for the information data section and the ghost removal reference signal section to be edited, and the data is decoded by the decoder 207 to be the timing controller 206. ) And the information editing unit 205

Accordingly, the timing controller 206 outputs a specific section recognition signal for notifying the section position of the ghost removal reference signal to the ghost removal section 204 and provides a section section recognition signal for notifying the section position on which information to be edited is loaded. The information is output to the information editing unit 205.

Therefore, the ghost removing unit 204 removes the ghost component mixed in the composite image signal CVBS of the image detector 203 by using the specific section recognition signal of the timing controller 206.

At this time, the information editing unit 205 reads a specific section recognition signal of the timing controller 206, extracts information to be edited in the composite video signal from which the ghost component has been removed by the ghost removing unit 204, and the service information processing unit 209. ), And the composite video signal from which the service information is extracted is output to the image display unit 210.

When the information signal to be edited input to the information editing unit 205 is the same as the waveform of Fig. 8A, the edited information signal is output as the waveform of Fig. 8B.

Accordingly, the service information processing unit 209 converts the service information extracted by the information editing unit 205 into a signal that can be displayed as an image and outputs it to the image display unit 210.

Therefore, the composite video signal and the service information are displayed alone or mixed on the screen of the image display unit 210.

In the present invention, when the recording information is to be recorded, as shown in the block diagram of FIG. 9, the video recording apparatus 300 is connected to the output terminal of the information editing unit 205. The operation thereof will be described below.

The embodiment of FIG. 9 is to solve the inconvenience caused by displaying outdated information (KBPS signal) when reproducing the recorded content since the information data within the vertical unranking interval is also recorded in the conventional video signal recording. .

First, the tuner 202 selects a frequency of a desired channel from the high frequency TV signal received by the antenna 201 to output the intermediate frequency signal IF, and the image detector 203 outputs the intermediate frequency signal IF. The composite image signal CVBS is output as an input.

At this time, the timing controller 206 extracts vertical and horizontal synchronization signals Vs (Hs) from the composite image signal CVBS output from the image detector 203 and generates a clock CLK for operating the system. .

When the microcomputer 208 outputs specific section position data for the information data section and the ghost removal reference signal section to be edited, the decoder 207 decodes the section data to output the timing control section 206 and the information editing section 205. Done.

Accordingly, the timing controller 206 outputs a ghost removal reference signal and a specific section recognition signal for notifying the section position to the ghost removal section 204 and a specific section recognition signal for notifying the section position on which information to be edited is loaded. The information is output to the information editing unit 205.

In this case, the ghost removing unit 204 removes the ghost component mixed in the composite image signal CVBS of the image detector 203 by using a specific section recognition signal of the timing controller 206.

Thereafter, the information editing unit 205 reads a specific section recognition signal of the timing controller 206, extracts information to be edited contained in the composite video signal from which the ghost component has been removed by the ghost removing unit 204, and information related to the date. The data will be erased.

Accordingly, the video recording station 300 records the information in which the date-related information data has been deleted by the information editing unit 205.

According to another embodiment of the present invention, as shown in the block diagram of FIG. 9, a tuner 212 which tunes a desired channel from a broadcast signal received by the antenna 211 and outputs an intermediate frequency signal IF, and the tuner An image detector 213 for outputting a composite video signal CVBS by inputting the intermediate frequency signal IF of 212 and a ghost component mixed with the composite video signal CVBS of the image detector 213 The ghost removal unit 214 to be removed and the self diagnostic information are inserted into a specific section of the composite video signal output from the ghost removal unit 214 to the first to third functional blocks 219-1 to 219-3. A specific section recognition signal is generated by extracting vertical and horizontal sync signals Vs (Hs) from the information editing unit 215 and the composite video signal CVBS of the image detector 213 and outputting the specific section position information. A timing controller 216 for outputting the output to the ghost removing unit 214 and the information editing unit 215; Decoders 220-1 to 220-3 for decoding the output data of the first to third functional blocks 219-1 to 219-3, and the first to third functional blocks (215) to the information editing unit 215. Encoder 218 for outputting self-diagnosis information for determining the operating state of 219-1 to 219-3, stored data of the encoder 218, and output data of the decoders 220-1 to 220-3. The comparator 222 for comparing and the specific section position information to the timing controller 216, and outputs the self-diagnostic data to the encoder 218 and the comparison result of the comparator 222 as an input The microcomputer 217 which determines the operation state of the 1st-3rd functional blocks 219-1-219-3, and the operation state display part 223 which displays the determination result of this microcomputer 217 are comprised.

Reference numeral 221 of the figure is an image display unit for receiving an output signal of the first to third functional blocks (219-1 to 219-3) to display the image.

Referring to the operation and effect of another embodiment of the present invention configured as described above are as follows.

First, the tuner 212 selects a frequency of a desired channel from the high frequency TV signal received from the antenna 211 to output an intermediate frequency signal IF, and the image detector 213 outputs the intermediate frequency signal IF. The composite image signal CVBS is output as an input.

At this time, the timing controller 216 extracts vertical and horizontal synchronization signals Vs (Hs) from the composite image signal CVBS output from the image detector 213 and generates a clock CLK for operating the system. .

When the microcomputer 218 outputs specific section position data about the information data section and the ghost elimination reference signal section to be edited, the decoder 217 decodes the section data and outputs it to the timing controller 216 and the information editing unit 215. Done.

Accordingly, the timing controller 216 outputs a specific section recognition signal for notifying the section position of the ghost removal reference signal to the ghost removal section 214 and a specific section recognition signal for notifying the section position on which the information to be edited is loaded. The information is output to the information editing unit 215.

In this case, the ghost remover 214 removes the ghost component mixed into the composite image signal CVBS of the image detector 213 by using a specific section recognition signal of the timing remover 216.

On the other hand, when the encoder 218 receives and stores information for identifying the operating states of the first to third functional blocks 219-1 to 219-3 from the microcomputer 217, and the self diagnosis mode is set. The information is input to the information editing unit 215.

At this time, the information editing unit 215 reads a specific section recognition signal of the timing controller 216 to obtain information data for identifying the operation state of each of the functional blocks 219-1 to 219-3 input from the encoder 218. The ghost elimination unit 214 inserts a predetermined portion of the composite image signal into a predetermined section and inputs the composite image signal into which the information is inserted into each of the functional blocks 219-1 to 219-3.

Thereafter, the decoders 220-1 to 220-3 decode the output data of the first to third functional blocks 219-1 to 219-3, respectively, and output the decoded data to the comparator 222.

At this time, the comparator 222 compares the decoding information of the decoders 220-1 to 220-3 with the self diagnostic information stored in the encoder 218 and inputs the comparison result to the microcomputer 217.

Accordingly, the microcomputer 217 reads the comparison result of the comparator 222 to determine the operation state of the first to third functional blocks 219-1 to 219-3 and the determination result on the operation state display unit 223. By transmitting the display to indicate the operating state of the first to third functional blocks (219-1 to 219-3).

As described in detail above, the present invention has the effect of eliminating the inconvenience of eliminating unnecessary information by eliminating ghost components and preventing error of received data by decoding service information, and erasing and decoding unnecessary data among received data. have.

In addition, the present invention has the effect of implementing a self-diagnosis function by inserting data for identifying the operating state of the system in a specific section of the TV signal to determine the operating state of the system.

Claims (3)

Tuning means for tuning a specific channel among the broadcast reception signals, video detection means for outputting the composite video signal CVBS as an input of the intermediate frequency signal IF of the tuning means, and composite video signal CVBS of the video detection means. A ghost removing means for removing ghost components mixed into the apparatus, an information editing means for receiving an output signal of the ghost removing means and editing information of a specific section, and converting the extracted information of the information editing means into a signal that can be displayed as an image. A vertical and horizontal synchronizing signal by inputting the service information processing means, the image display means for receiving the output signals of the information editing means and the service information processing means, and displaying the video service information, and the composite video signal of the video detecting means. Timing control means for separating and outputting a specific section recognition signal by inputting specific section position information, and a user's key input Control means for outputting data for a specific section position in accordance with the output; and outputting specific section position information to the timing control section by decoding the output data of the control section; An information editing apparatus for a television system, characterized by comprising decoding means for outputting. 2. The information editing apparatus of a television system according to claim 1, wherein said information editing means erases unnecessary information during information editing. Tuning means for tuning a desired channel from a broadcast reception signal, video detection means for outputting a composite video signal as an input of an intermediate frequency signal of the tuning means, and ghost components incorporated in the composite video signal of the video detection means; A ghost removing means, information editing means for inserting self-diagnostic information into a specific section of the composite video signal output from the ghost removing means, and outputting the self diagnostic information to the first to third functional blocks; And timing control means for outputting a specific section recognition signal to the ghost removing means and the information editing means by separating the horizontal synchronization signal and calculating the specific section position information, and decoding the output data of the first to third functional blocks, respectively. The first to third decoders and the information editing means to determine the operation state of the first to third functional blocks. However, an encoder for outputting information, a comparator for comparing the stored data of the encoder and the output data of the first to third decoders, and outputting specific section position information to the timing control means, the self diagnostic data is output to the encoder. And a control means for determining an operation state of the first to third functional blocks by inputting a comparison result of the comparator and an operation state display means for displaying the determination result of the control means. Self-diagnosis device.