KR19980017763A - Emergency broadcasting recognition control device of television - Google Patents

Abstract

According to the present invention, a binary code value according to a plurality of packets (e.g., 8 bits per packet) of transmission code data superimposed on a television broadcast signal selected from a television is interchanged with each other, thereby detecting a state in which a plurality of times are repeatedly generated. Provided is an emergency broadcasting recognition control apparatus for a television that can determine whether emergency broadcasting is transmitted.

Accordingly, in the present invention, the composite video signal of the television broadcast tuned through the tuner 4 and amplified by the video IF unit 6 is processed by the image processing means 10 and 12, and then the image output unit. (14) A data receiving processing means (16, 18, 20) for receiving and processing data for transmission of emergency broadcasts included in a vertical blanking period according to a composite video signal of said tuned television broadcasting in a video reproduced through (14). And data decoding means 22 for decoding the received processed emergency broadcast recognition data and the screen display data, and the screen display data of the decoded emergency broadcast as well as being read for display. Display information for the screen display of the emergency broadcast contents by signal processing the screen display data according to the emergency broadcast when the operating power is turned on by the display memory means 24 and the power circuit unit 34. Display signal processing means 26 for generating a call; and reference data for recognizing a state in which a plurality of packets constituting the recognition data of emergency broadcast received from the television broadcast signal are transmitted so that data code values are exchanged a plurality of times. The data memory means 30 memorized and the predetermined channel can be tuned through the tuner 4 when the operation power supply of the power supply circuit part 34 is turned off, and the data decoding means 22 decodes the data. The power circuit unit 34 turns on the operating power by recognizing a state in which the code values of the plurality of packets are exchanged a plurality of times and transmitted based on the reference data of the data memory means 30. Controlling the screen display data according to the emergency broadcast to be displayed as a display information signal through a signal processing operation of the display signal processing means 26; And a means (32) is characterized in that configured.

Description

Emergency broadcasting recognition control device of television

The present invention relates to an emergency broadcast recognition control apparatus for a television, and more particularly, by detecting a state in which a code value of transmission code data superimposed on a television broadcast signal and transmitted is repeatedly generated based on a predetermined code rule. The present invention relates to an emergency broadcast recognition control apparatus of a television for recognizing emergency broadcast reception.

At the time of broadcasting RF signal for broadcasting program transmitted from broadcasting station, various service information such as news, sports, business, weather forecast, stock, shopping, science, travel information, etc. is converted into text or figure. Subsequently, so-called 0b character multicasting (hereinafter referred to as teletext) converting service information edited into the text or figure into a digital signal form and superimposing and transmitting it within 4H periods of the vertical retrace period 10H to 21H of the broadcast signal. 0c) is adopted.

On the other hand, a method of converting image information composed of characters or figures into digital signals and transmitting them is a pattern method of decomposing and transmitting the characters or figures into pixels, and a code method of converting them into character codes or figure codes. The hybrid method, which is a mixture of the pattern method and the code method, is mainly used.

According to such teletext broadcasting, a broadcasting station broadcasts a regular broadcast program, and collects and classifies various service information separately by field, edits it into a multi-page screen in the form of a magazine, and assigns a page number to each screen. The entire screen is transmitted as a digital signal according to a specified order, and the teletext information superimposed on the vertical retrace period of the transmitted broadcast signal in a receiver, that is, a television equipped with a teletext broadcast reception adapter or a teletext decoder If the signals for the configuration of the desired page are sequentially received and displayed on the screen, the desired information is displayed.

This teletext information is transmitted in the form of a data packet in the vertical retrace period of a television broadcast signal. The data packet has a synchronization unit having 24 bits (ie, 3 bytes) and a 272 bit (ie 34 bytes). It consists of a data part. Here, the synchronization unit includes a lock run-in for bit synchronization and a framing code for byte synchronization, and the data unit is a data block composed of 176 bits. It is included with data or control data.

On the other hand, in recent years, by using the data transmitted according to the teletext broadcast has an emergency broadcast function to transmit the data of the character or figure having an emergency or unavoidable emergency reports such as natural disasters.

However, in the emergency broadcasting function according to the teletext broadcasting, the broadcasting data is transmitted preferentially to the screen display data having the contents of emergency broadcasting with data having a predetermined code informing that the corresponding transmission data is the emergency broadcasting. However, if a part of a predetermined code constituting the data transmitted to notify the emergency broadcast is damaged during the transmission, an error in data recognition will occur on the television side, and thus an emergency broadcast cannot be easily performed. This is likely to occur.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and a binary code value corresponding to a plurality of packets (e.g., 8 bits per packet) of transmission code data superimposed on a television broadcast signal selected from a television is exchanged for a plurality of times. It is an object of the present invention to provide an emergency broadcasting recognition control apparatus for a television which can determine whether emergency broadcasting is transmitted by detecting a repeatedly generated state.

According to the emergency broadcast recognition control apparatus of a television according to the present invention to achieve the above object, a composite video signal of a television broadcast tuned through a tuner and amplified by an image IF unit is processed by an image processing means. And a video reproduced through a video output unit, comprising: data receiving processing means for receiving and processing data for transmission of emergency broadcasts contained within a vertical blanking period according to the composite video signal of the selected television broadcast; Data decoding means for decoding the identification data and the screen display data of the emergency broadcast usable; a display memory means for reading the screen display data of the decoded emergency broadcast; Signal processing screen display data according to the emergency broadcast at the time of Display signal processing means for generating a display information signal for screen display of rapid broadcast contents; a state in which a plurality of packets constituting identification data of emergency broadcast received from the television broadcast signal are transmitted so that data code values are exchanged a plurality of times each other; Data memory means having stored therein reference data for recognizing the data, and inputting recognition data decoded by the data decoding means, while enabling tuning of a predetermined channel through the tuner when the power supply of the power circuit unit is turned off. Recognizing a state in which the code values of the plurality of packets are exchanged a plurality of times based on the reference data of the data memory means and transmitted, the power circuit section turns on the operating power, through the signal processing operation of the display signal processing means. The screen display data according to the emergency broadcast is displayed as the display information signal. And control means for controlling the lock and provides the emergency broadcast recognition control unit of the television is configured.

Preferably, in the present invention, the emergency broadcasting recognition data recognized by the reference data of the data memory means has a start code of S and P and a recognition code consisting of consecutive sequential binary codes of 000 0000 and 111 1111. will be.

According to the present invention configured as described above, the mutual code value in units of a plurality of packets (two packets) of the recognition data for notifying that the emergency broadcast is transmitted from the transmission data superimposed within the vertical blanking period of the television broadcast signal for emergency broadcasting. When detected in the state of being exchanged a number of times, it recognizes that the emergency broadcast, even if the operating power of the television is turned off, the power is turned on so that the screen display data for emergency broadcast can be displayed on the CRT screen.

1 is a block diagram showing an emergency broadcast recognition control apparatus for a television according to the present invention;

2 is a schematic diagram showing a transmission period of code data for transmission notification of emergency broadcast in a television broadcast signal;

3 is a diagram showing a data format of code data received for transmission notification of emergency broadcasting according to a preferred embodiment of the present invention;

4 is a flowchart illustrating the operation according to the preferred embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

2: receiving antenna 4: tuner,

6: Video IF Part 8: Audio IF Part,

10: video amplifier 12: video signal processing unit,

14: video output unit 16: synchronous separator,

18: data extraction unit 20: data processing unit,

22: data decoder 24: display memory,

26: display signal processing section 28: function setting section,

30: data memory 32: microcomputer,

34: power supply circuit section.

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 an emergency broadcast recognition control apparatus for a television according to the present invention. In the apparatus of the present invention, reference numeral 4 denotes channel tuning data for tuning of a predetermined channel from the microcomputer 32 described later. A form of intermediate frequency signal that is mixed with a local oscillation frequency signal generated by the channel tuning data (VT) by tuning an RF signal of a corresponding channel among a plurality of RF signals induced in the receiving antenna 2 by receiving VT). Outputs a tuner.

Reference numeral 6 denotes an image IF unit for intermediate frequency amplifying the composite video signal of the tuned television broadcast, and 8 denotes an audio IF unit for intermediate frequency amplification of the audio signal of the tuned television broadcast.

Reference numeral 10 denotes an image amplifier for amplifying the intermediate frequency amplified composite video signal to a signal level capable of signal processing, and 12 denotes a luminance signal and a color signal to separate the signal amplified composite video signal into a luminance signal and a color signal. And a video signal processing unit which synthesizes and outputs a composite video signal after demodulation processing, and synthesizes and outputs a display information signal according to emergency broadcast from the display signal processing unit 26 to be described later. Denotes an image output unit for amplifying the composite image signal processed by the image signal and outputting the reproduced image through a CRT (not shown).

Here, the tuner 4, the image IF unit 6, and the image amplifier 10 receive a limited power supply from the power circuit unit 34 even when the operating power is turned off.

Reference numeral 16 denotes a synchronization separator for separating a synchronization signal included in the composite image signal of the image amplifier 10, that is, a signal of a vertical blanking period including a vertical synchronization signal, and 18, the separated vertical blanking. A data extracting unit extracts transmission data according to emergency broadcasting from a signal of a period, and 20 indicates a data processing unit which performs data processing such as data slice processing of the extracted transmission data.

Here, the transmission data according to the emergency broadcast extracted from the data extraction unit 18 is about 21H, including a vertical synchronization signal of 3H (3 horizontal scanning periods) and equalization pulses having 3H, respectively, as shown in FIG. 2. Each transmitted vertical blanking period consists of a transmission data packet having 8 bits + 8 bits.

Further, reference numeral 22 denotes a data decoder which decodes the emergency broadcast notification recognition data of the transmission data according to the data processed emergency broadcast and the screen display data according to the emergency broadcast content to be usable, and 24 denotes the decoded transmission data. In addition to storing the screen display data having the contents of emergency broadcasting in the present invention, a display memory made of, for example, an S-RAM read for display.

Here, the emergency broadcast notification recognition data of the transmission data decoded by the data decoder 22 is the start code of the first packet, such as S, the start code of the second packet, such as P and , 000 0000 and 111 1111 have 8 bits (1 packet) + 8 bits (1 packet) consisting of binary code with the same code value in one packet, and the same code value in the two packets is many times (e.g. 3 times To be exchanged.

Also, reference numeral 26 denotes, for example, OSD signal processing for processing the screen display data of the emergency broadcast read out from the display memory 24 under the control of the microcomputer 32 to be described later, generating and displaying the display information signal as a displayable display information signal. A display signal processing section consisting of a circuit is shown.

Reference numeral 28 denotes a function setting section that consists of a matrix button provided in a remote control unit for remote control or a predetermined portion of the control panel of the main body, and performs key setting for the overall functional operation of the television.

In addition, reference numeral 30 denotes a data memory in which reference data for recognizing recognition data indicating emergency broadcasting included in the transmission data is stored, and 32 denotes a microcomputer that is in charge of controlling the overall functional operation of the television. The microcomputer 32 applies channel tuning data VT for tuning the channel selected by the function setting unit 28 to the tuner 4 in the off state of the operation power supply by the power circuit unit 34 described later. When the recognition data from the data decoder 22 is recognized as the emergency broadcast notification recognition data compared with the reference data from the data memory 30, the power circuit unit 34 to be described later turns on the operation power. The display signal processing unit 26 controls the display signal processing unit 26 while switching to display the screen display data according to the emergency broadcast contents from the display memory 24 on the CRT screen. Make it available.

Further, reference numeral 34 denotes a power supply circuit unit which converts AC power from an AC input terminal into a DC power supply and supplies the same to each operating circuit stage, and the supply state of the operating power is turned on / off by the switch control of the microcomputer 32. Indicates.

Next, the operation of the present invention made as described above will be described in detail with reference to the flowchart of FIG. 4.

First, in step 40, the microcomputer 32 applies channel tuning data VT for tuning of a predetermined channel to the tuner 4 while the operating power is turned off in the power circuit unit 34. As is tuned, the composite video signal of the tuned television broadcast signal is intermediately amplified by the video IF unit 6 and signal amplified by the video amplification unit 10.

At this time, the synchronization separating unit 16 separates the signal within the vertical blanking period from the signal-amplified composite video signal, and the data extracting unit 18 transmits the signal in the form of digital data in the signal of the separated vertical blanking period. The transmission data is extracted, and the transmission data processed by the data processing unit 20 is decoded to be usable by the data decoder 22.

In step 41, the microcomputer 32 compares the decoded data from the data decoder 22 with reference data from the data memory 30.

Next, in step 42, the microcomputer 32 performs a code exchange at a predetermined number of times, in which a comparison result between the decoded transmission data and reference data is the same code value in two packets, for example, three times as shown in FIG. It is determined whether or not it corresponds to the recognition data for emergency broadcast notification.

As a result of the determination in step 42, if it is determined that the compared decoding data is the emergency broadcast notification recognition data, the control proceeds to step 43 so that the power circuit unit 34 turns on the operating power and the data. The screen display data according to the emergency broadcast decoded by the decoder 22 and stored in the display memory 24 is signal-processed by the display signal processing unit 26 into display information data that can be displayed on the screen and displayed on the CRT screen. .

In that state, the flow advances to step 44 to determine whether the function setting unit 28 performs a key operation for turning off the operating power.

As a result of the determination in step 44, when the microcomputer 32 determines that the function setting unit 28 is performing a key operation for turning off the operating power, the control proceeds to step 45 and the power circuit unit 34 operates. While switching control to turn off the power, the channel tuner data VT is applied to the tuner 4 to tune to a predetermined channel, thereby continuously searching for transmission data according to the emergency broadcast included in the television broadcast signal. .

According to the present invention made as described above, if the data for recognition of the transmission data according to the emergency broadcast in the television recognizes a state in which a plurality of packets having a continuous and continuous code value is transmitted while code exchanged a number of times mutually emergency broadcast By recognizing that the data is transmitted, the transmission data according to the emergency broadcast can be displayed on the screen. Thus, an error in recognition of the emergency broadcast does not occur, and thus, it is possible to accurately recognize and display the screen.

Claims (2)

The composite video signal of the television broadcast tuned through the tuner 4 and amplified by the video IF unit 6 is processed by the image processing means 10 and 12, and the image is output through the image output unit 14. In television being played, Data receiving processing means (16,18,20) for receiving and processing data for transmission of emergency broadcasts included in a vertical blanking period according to the composite video signal of the tuned television broadcast; Data decoding means (22) for enabling us to decode the received processed emergency broadcast recognition data and screen display data; Display memory means (24) which reads the screen display data of the decoded emergency broadcast and reads the screen; Display signal processing means (26) for signal processing screen display data according to the emergency broadcast and generating display information signals for screen display of emergency broadcast contents when the power supply by the power supply circuit unit 34 is turned on; Data memory means (30) having stored therein reference data for recognizing a state in which a plurality of packets constituting identification data of emergency broadcast received from the television broadcast signal are transmitted so that data code values are exchanged a plurality of times; It is possible to tune to a predetermined channel through the tuner 4 when the operating power of the power circuit unit 34 is turned off, and to receive the recognition data decoded by the data decoding means 22 and receive the data memory means. On the basis of the reference data of 30, the signal values of the display signal processing means 26 are recognized by causing the power supply circuit unit 34 to turn on the operating power by recognizing a state where the code values of the plurality of packets are exchanged a plurality of times each other. And control means (32) for controlling screen display data according to emergency broadcasting to be displayed as a display information signal through a processing operation. 2. The method of claim 1, wherein the recognition data of emergency broadcasting recognized by the reference data of the data memory means 30 includes a start code of S and P and a recognition code consisting of consecutive 00000 and 111 1111 consecutive and identical binary codes. Emergency broadcast recognition control device for television.