KR19980041429A - Television broadcasting system that enables emergency broadcasting by region - Google Patents

Abstract

The present invention relates to a television broadcasting system capable of emergency broadcasting by region. The present invention transmits a pilot signal indicating that the broadcast is an emergency broadcast together with a broadcast wave signal, and transmits the signal to the receiver, when the transmitting pilot signal is detected, the power key is automatically turned on and the channel is broadcasted. In a television broadcasting system configured to switch to a transmitting channel, a national signal is divided into regions of a predetermined unit, and a unique area code is assigned, and when a specific emergency area has a unique emergency broadcast, a pilot signal is modulated by modulating the area code. And a key input means for inputting a region code unique to the region, a means for storing the region code input by the key input means, and a pilot transmitted from the transmitter side. Means for detecting the signal and decode the area code from the pilot signal detected by said detecting means. And a receiving means including control means for automatically turning on the power key and switching a channel to a channel for transmitting the emergency broadcast only when the region code thus decoded matches the set and stored region codes. It is characterized by.

Description

Television broadcasting system that enables emergency broadcasting by region

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television broadcasting system capable of emergency broadcast transmission and reception, and more particularly to a television broadcasting system capable of transmitting and receiving emergency broadcasts transmitted by region.

1 is a block diagram of a conventional television broadcasting system capable of emergency broadcasting. As shown in Fig. 1, on the receiver side of a conventional television broadcasting system capable of emergency broadcasting, the antenna 1 captures a broadcast wave signal of a plurality of channels transmitted from the transmitting station 30 to the air. The tuner 2 selectively passes only the broadcast wave signal for the channel selected by the user among the broadcast wave signals of the plurality of channels captured by the antenna 1 and mixes it with a local oscillation frequency that is generated by itself to produce a predetermined intermediate frequency signal. (Hereinafter referred to as IF signal) is generated.

The IF amplifier 3 amplifies the IF signal generated by the tuner 2 to an appropriate size for processing. The P / S separation unit 4 includes, for example, a surface acoustic wave (SAW) filter. The P / S separation unit 4 separates an image intermediate frequency signal (PIF) and an audio intermediate frequency signal (SIF) from the amplified IF signal. In charge. The image detector 5 detects the image intermediate frequency signal PIF separated by the P / S separator 4 to generate a composite image signal CV. The image processor 6 processes the composite image signal CV to output R (red), G (green), and B (blue) signals corresponding to the image signal, and the CRT driver 7 is the image processor 6. The CRT 8 is driven based on the RGB signal output from the.

On the other hand, the voice detector 9 detects the voice intermediate frequency signal (SIF) separated by the P / S separation unit 4 and outputs a voice signal, the voice processor 10 for the detected voice signal Speech processing such as a base, treble, volume, etc. is executed, and the voice amplifier 11 amplifies the voice processed voice signal to drive the speaker 12.

The remote controller 13 is used by the user to select a desired function of the television receiver including power on / off, channel and volume, and the key input unit 14 receives a function selected by the remote controller 13 to receive a microprocessor ( 15) to provide. The microprocessor 15 processes key values input through the key input unit 14 to determine functions desired by the user, and then controls each part of a circuit including a tuner 2, an image processor 6, and an audio processor 10. In charge of the function.

The power supply unit 16 is a control function circuit including a microprocessor 15, a tuner (2), an IF amplification unit (3) and a P / P, even if the power key is turned off when the power plug of the television receiver is plugged into a power outlet. The standby power source for operating the signal processing circuit such as the S separation unit 4 is always supplied. In this state, when the power-on function is selected, the microprocessor 15 outputs a control signal to the power supply unit 16 so that the main power is supplied to the remaining signal processing system, thereby outputting video and audio.

The emergency signal detection unit 17 detects a pilot signal informing of the emergency broadcast transmitted from the transmitting station 30. In more detail, when transmitting an emergency broadcast, the transmitting station 30 carries a pilot signal indicating that the broadcast signal is transmitted over the airwaves, and when the emergency broadcast is transmitted, the television receiver side sends it to the emergency signal detecting unit 17. Is detected and provided to the microprocessor 15. Next, the microprocessor 15 checks the channel currently transmitting the emergency broadcast based on the detection signal provided by the emergency signal detection unit 17, and controls the power supply unit 16 even if the power key is currently turned off. By automatically turning on the power and controlling the tuner 2, the channel is automatically switched to a channel for transmitting an emergency broadcast.

On the other hand, national broadcasting stations now have local broadcasting stations in almost all regions, and in the near future, private broadcasting stations will be established in each region, and regional programs specific to the region are expected to be gradually expanded.

However, in the above-mentioned emergency broadcasting system capable of transmitting and receiving emergency broadcasts, it is more annoying to viewers when the emergency broadcasting is limited to one region, for example, power failure and singular forecast or local disaster forecast. There was a problem that can give, and further reduce the reliability of emergency broadcasts.

The present invention has been made to solve the above-mentioned problems, and when the emergency broadcast is about a problem specific to a specific region, the transmitting side modulates the region code unique to the region and transmits it with the broadcast wave, and the receiving side transmits it. TVs capable of emergency broadcasting by region, which can increase the interests of viewers and further improve the reliability of broadcasting by decoding the area codes included in emergency broadcasting so that the broadcasting can be output only if it is specific to the region to which they belong. The purpose is to provide a broadcast system.

1 is a block diagram of a conventional television broadcasting system capable of emergency broadcasting.

2 is a block diagram of a television broadcasting system capable of emergency broadcasting by region of the present invention.

Explanation of symbols on the main parts of the drawings

1: antenna, 2: tuner,

3: IF amplification section, 4: P / S separation section,

5: image detector, 6: image processor,

7: CRT drive, 8: CRT,

9: voice detector, 10: voice processor,

11: voice amplifier, 12: speaker,

13, 13 ': remote controller, 14, 14': key input,

15, 15 ': microprocessor, 16: power section,

17: emergency signal detection unit, 20: area code storage unit,

30, 30 ': Sending station.

In order to achieve the above object, the present invention transmits a pilot signal indicating that the broadcast is an emergency broadcast together with a broadcast wave signal, and automatically turns on the power key when the transmitted pilot signal is detected at the receiver. At the same time, in a television broadcasting system for switching a channel to a channel for transmitting the emergency broadcast, if the country wants to allocate a unique area code by dividing the whole country by a predetermined unit of area and to make a unique emergency broadcast in a specific area, A key input means for inputting a transmitting side which modulates a code into a pilot signal and then transmits it together with a broadcast wave signal, and a region code unique to the region, and means for storing the region code inputted by the key input means; Means for detecting a pilot signal transmitted from the transmitting side and a file detected by the detecting means Control means for decoding the area code from the lot signal, and automatically turns on the power key only when the decrypted area code matches the set and stored area code, and at the same time switch the channel to the channel for transmitting the emergency broadcast. Characterized in that it comprises a receiving side comprising.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

FIG. 2 is a block diagram of a television broadcasting system capable of emergency broadcasting for each region of the present invention. The same parts as those shown in FIG. 1 are denoted by the same reference numerals, and detailed description thereof will be omitted.

Prior to the description, in order for the present invention to be established, a unique area code must be assigned to each of the divided regional units in a state where the whole country is divided into predetermined regional units, such as a regional code in an automatic telephone system. In this way, when each region is divided into a unique region code, when the broadcasting station 30 ', that is, each regional broadcasting station wants to transmit emergency broadcasts, for example, single and single forecast broadcasts or disaster forecast broadcasts, It modulates the area code of the area to which the transmitting station 30 'belongs to make a pilot signal and loads it on the broadcast wave signal for emergency broadcasting.

Meanwhile, in order to enable regional emergency broadcasting according to the present invention, a receiving side, that is, a television receiver, first sets a region code unique to the region to which the receiving side belongs by operating a region code input key provided in the remote controller 13 '. Should be placed. That is, when the viewer sets the area code through the remote controller 13 ', the key input unit 14' receives this and provides the area code to the microprocessor 15 ', and the microprocessor 15' provides the area code. The code storage unit 20 will be stored. In this way, if the receiver sets and stores the corresponding area code, it becomes possible to send and receive emergency broadcasts by region.

In this state, when the regional emergency broadcast is transmitted from the transmitting station 30 ', the television receiver detects the pilot signal through the emergency signal detecting unit 17 and provides it to the microprocessor 15'. Next, the microprocessor 15 ′ decodes the detected pilot signal and checks an area code, and then compares it with the receiving area code stored in the area code storage unit 20.

As a result of the comparison, when the area code transmitted and the area code of the receiver are identical, i.e., an emergency broadcast specific to the area to which the receiver belongs, the microprocessor 15 'controls the power supply unit 16 so that the main power source is connected to the circuit. While being supplied to each part, the tuner 2 is controlled to switch the reception channel to a channel for transmitting an emergency broadcast. Accordingly, the emergency broadcast transmitted from the transmitting station 30 'passes through the IF amplifying unit 3 and the P / S separating unit 4 and passes through the image processing system from the image detecting unit 5 to the CRT 8. The video for emergency broadcast is output, and at the same time, the voice for emergency broadcast is output through the voice processing system from the voice detector 9 to the speaker 12.

On the other hand, when the power key is in the on state, that is, when the current viewer is watching another ordinary broadcast, the microprocessor 15 'controls the tuner 2 to transmit the channel as an emergency broadcast channel. Will be switched.

The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea of the present invention.

For example, a function key for externally selecting an automatic reception function of an emergency broadcast can be added to the above-described embodiment to expand the user's choice. Furthermore, the technical idea of the present invention may be applied to a radio broadcasting system as well as a television broadcasting system.

According to the television broadcasting system capable of emergency broadcasting according to the present invention as described above, when the emergency broadcasting is about a problem specific to a specific region, the transmitting side modulates a region code unique to the region and transmits it with the broadcast wave. On the other hand, the receiving side decodes the area code included in the outgoing emergency broadcast so that the broadcast can be output only if it is specific to the region to which it belongs, thereby enhancing the interests of the viewer and rethinking the reliability of the broadcast. .

Claims (1)

On the transmitting side, a pilot signal indicating that an emergency broadcast is transmitted along with a broadcast wave signal is transmitted, and on the receiving side, when the transmitted pilot signal is detected, the power key is automatically turned on and a channel is transmitted to the emergency broadcast channel. A television broadcasting system adapted to switch to; In case of assigning a unique area code by dividing the whole country by region of a predetermined unit and making emergency broadcasting unique to a specific area, the transmitting side which modulates the area code into a pilot signal and transmits it with a broadcast wave signal; , Key input means for inputting a region code unique to the region, means for storing the region code input by the key input means, means for detecting a pilot signal transmitted from the transmitting side, and a file detected by the detection means Control means for decoding the area code from the lot signal, and automatically turns on the power key only when the decrypted area code matches the set and stored area code, and at the same time switch the channel to the channel for transmitting the emergency broadcast. A television broadcasting system capable of emergency broadcasting for each region, comprising a receiving side including a receiving side.