KR20060112765A - Television receiver and method for coping with broadcasting signal output error - Google Patents

Abstract

A TV for coping with a broadcasting signal output error and a method thereof are provided to transmit a check request signal to a broadcasting signal transmission side through a modem when the detection of a carrier signal fails. A processor member discriminates whether a broadcasting signal output error is generated(S200). If a broadcasting signal output error is not generated, a television receiver is normally operated(S205). If a broadcasting signal output error is generated, the processor member searches the tuning frequency and extracts the electric wave of the tuning frequency from a tuner member(S210). When the electric wave extraction fails, the processor member displays an OSD(On Screen Display) for showing the non-input state of a broadcasting signal(S220). When the electric wave extraction succeeds, the processor member detects a carrier of the broadcasting signal(S230).

Description

Television receiver and method for coping with broadcasting signal output error {television receiver and method for coping with broadcasting signal output error}

1 is a block diagram of a broadcast signal transmission and reception system including a television receiver 120 according to an embodiment of the present invention.

2 is a flowchart of a coping method according to an embodiment of the present invention.

3 is a flowchart between a check request signal transmitting step S270 and a repair completion signal receiving step S280 in FIG. 2.

The present invention relates to a television receiver, and more particularly, to a television receiver and a method for coping with a broadcast signal output error.

In general, a broadcasting station transmits a radio frequency (RF) signal by transmitting a broadcast signal. The television receiver receives the RF signal transmitted from the broadcasting station. The television receiver processes the received RF signal into a video signal and an audio signal. The television receiver outputs the processed video and audio signals to the screen and the speaker.

However, if the RF signal is not input to the television receiver due to an error of the broadcasting system, the television receiver does not output the video signal and / or the audio signal to the screen and / or the speaker. The television receiver simply outputs an OSD (On Screen Display) screen.

Also, even if an RF signal is input to the television receiver, if there is an error in the television receiver itself, the television receiver also cannot output the video signal and / or the audio signal to the screen and / or the speaker.

Even when the broadcast signal output error in the television receiver is due to an error in the broadcasting station system, the user can determine that it is due to an error in the television receiver. This is especially true when an output error of the audio signal occurs.

As such, when a conventional television receiver output error occurs, it is not clear whether this is due to an error of a broadcasting station system or an error in a television receiver. Therefore, there is a problem that the conventional television receiver cannot immediately cope with an output error of a broadcast signal.

SUMMARY OF THE INVENTION The present invention has been made in an effort to provide a television receiver and a method for coping with an output error of a broadcast signal by transmitting a check request signal to a broadcast signal transmission side through a modem when the carrier signal fails to be detected.

A television receiver according to an embodiment of the present invention for achieving the above technical problem from the tuner unit for tuning the radio wave of the selected channel frequency, the modem unit connected to the communication line with the broadcast signal transmission side and the radio wave of the selected channel frequency And a processor unit for detecting a carrier signal and transmitting a check request signal to the broadcast signal transmitting side of the selected frequency through the modem unit.

According to an aspect of the present invention, there is provided a method of coping with a problem of tuning a radio wave of a selected channel frequency, detecting a carrier signal from the radio wave of the selected channel frequency, and failing to detect the carrier signal. And transmitting a check request signal to a broadcast signal transmitter of the selected channel frequency through a modem.

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

1 is a block diagram of a broadcast signal transmission and reception system including a television receiver 120 according to an embodiment of the present invention. Referring to FIG. 1, the transmission and reception system includes a broadcast signal transmitter 100 and a television receiver 120. The broadcast signal transmitting side 100 transmits a broadcast signal to the television receiver 120.

The television receiver 120 includes a tuner unit 121, a processor unit 120, and a television modem unit 123. The television receiver 120 receives a broadcast signal transmitted from the broadcast signal transmitter 100.

The tuner 121 tunes radio waves of the selected channel frequency. Tuning means selecting and extracting only the radio waves of the required frequency from the input signal. Therefore, the tuner 121 may select and extract only the radio wave of the channel frequency transmitted from the broadcast signal transmitting side 100.

The television modem unit 123 is connected to a communication line with the broadcast signal transmitting side 100. The television modem unit 123 is a modulation and demodulation device that combines a modulator and a demodulator.

The television modem unit 123 modulates the digital signal into an analog signal and transmits it to the broadcast signal transmitting side 100, and demodulates the analog signal received from the broadcast signal transmitting side 100 into the original digital signal.

The processor unit 122 detects a carrier from radio waves of the channel frequency selected by the tuner unit 121. A carrier is a high frequency radio wave that is a means of transporting a signal to be transmitted in radio communication.

The processor 122 detects the video carrier and the audio carrier in detecting the carrier. The video carrier is a carrier of the video signal, and the audio carrier is a carrier of the audio signal.

If the detection of the carrier fails, the processor 122 transmits a check request signal to the broadcast signal transmitting side 100 through the television modem unit 123.

The broadcast signal transmitting side 100 includes a broadcasting station modem unit 101, a controller unit 102, a channel up converter unit 103, an AM (Amplitude Modulation) modulator 104 and a FM (Frequency Modulation) modulator 105 It includes. The broadcast signal transmitting side 100 is, for example, a broadcast station system.

The broadcasting station modem unit 101 is connected to a communication line with the television receiver 120. Accordingly, the broadcasting station system 100 and the television receiver 120 may communicate with each other through the broadcasting station modem unit 101 and the television modem unit 123.

The broadcasting station modem unit 101 and the television modem unit 123 are basically service information corresponding terminals of a local cable broadcasting station or an air broadcasting station used by a user. The broadcasting station system 100 and the television receiver 120 should have the same communication protocol with respect to the operations of both modem units 101 and 203.

When an error occurs in the broadcasting station system 100, a predetermined signal is transmitted from the broadcasting station modem unit 101 to the television modem unit 123 to determine whether the broadcasting station system 100 has an error.

When the controller unit 102 receives the broadcast station system check request signal from the television receiver 120 through the broadcast station modem unit 101, the controller 102 checks whether there is an abnormality of the broadcast station system. At this time, the controller unit 102 checks for abnormalities of the channel up converter unit 103, the AM modulator unit 104, the FM modulator unit 105, and the like.

If there is an error as a result of the abnormality check, the controller 102 controls repair and repair of the error. The channel up converter 103, the AM modulator 104, the FM modulator 105, and the like operate under the control signal of the controller 102.

2 is a flowchart of a coping method according to an embodiment of the present invention. Referring to FIG. 2, the processor 122 determines whether an error of output of a broadcast signal occurs (S200). That is, the processor unit 122 determines whether the video signal is not displayed on the screen and / or the audio signal is not output to the speaker.

If the error of the broadcast signal output does not occur, the television receiver 120 operates normally (S205).

However, if an error in the output of the broadcast signal occurs, the processor unit 122 searches for the tuning frequency. The tuning frequency is the channel frequency selected by the tuner unit 121. The processor unit 122 extracts the radio wave of the tuning frequency from the tuner unit 121 (S210).

If the radio wave extraction of the tuning frequency fails, the processor 122 displays an on-screen display (OSD) screen indicating that the current state is a broadcast signal-free state (S220).

However, if the radio wave extraction of the tuning frequency is successful, the processor 122 detects a carrier of the broadcast signal (S230). The processor 122 detects a carrier of a video signal and a carrier of an audio signal in detecting a carrier of a broadcast signal.

The detection of both means that the broadcast signal output error is not a problem of the broadcast station system 100 but a problem of the television receiver 120 itself. Therefore, at this time, the processor unit 122 displays an OSD screen indicating that the broadcast signal output error is due to the television receiver 120 (S240).

However, if either one is not detected, the processor unit 122 displays an OSD screen indicating that the broadcast signal output error is due to the broadcast station system 100 (S250). In this case, the displayed screen is an OSD screen requiring the inspection of the broadcasting station system 100.

The viewer turns on the television modem unit 123 through the OSD menu of the displayed OSD screen. This is to perform communication between the television receiver 120 and the broadcasting station system 100 using the television modem unit 123 and the broadcasting station modem unit 101.

The processor unit 122 determines whether the television modem unit 123 is on (S260). If the television modem unit 123 is turned on, the processor unit 122 transmits a check request signal of the broadcasting station system 100 to the broadcasting station system 100 through the television modem unit 123 (S270).

Subsequently, upon receiving the recovery completion signal from the broadcasting station system 100 through the television modem unit 123 (S280), the processor unit 122 sets the television modem unit 123 to the standby state.

3 is a flowchart between a check request signal transmitting step S270 and a repair completion signal receiving step S280 in FIG. 2. Referring to FIG. 3, the broadcasting station system 100 receives a check request signal transmitted in the check request signal transmission step S270 of FIG. 2 (S310). The check request signal is received through the broadcast station modem unit 101.

When receiving the check request signal, the controller 102 checks whether the broadcasting station system 100 is abnormal (S320). For example, the controller unit 102 may have problems with the channel up converter unit 103, the AM modulator unit 104, or the FM modulator unit 105, or the like, causing an error or a television input video signal or a television input audio signal. Check for errors, etc.

If an error is not detected as a result of the check (S330), it is processed as a problem of the communication line (S340). However, if any error is detected as a result of the check (S330), the controller 102 calls the repair system (S350).

When the part corresponding to the error of the broadcasting station system 100 is repaired by the repair system, the controller 102 transmits a repair completion signal through the broadcasting station modem unit 101 (S360). The transmitted recovery completion signal is received by the television modem unit 123 in the recovery completion signal receiving step (S290) of FIG. 2.

The present invention can be embodied as computer readable codes on a computer readable recording medium. Computer-readable recording media include all kinds of recording devices that store data that can be read by a computer system. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disks, optical data storage devices, and the like, which are also implemented in the form of carrier waves (for example, transmission over the Internet). Include. The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.

So far I looked at the center of the preferred embodiment for the present invention. Those skilled in the art will understand that the present invention may be implemented in a modified form without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

As described above, according to the present invention, when no broadcast signal is input to the television receiver due to an abnormality of the broadcasting station system, two-way communication via a modem is performed between the broadcasting station system and the television receiver.

By using the two-way communication to control between the broadcast station system and the television receiver, the user and the broadcast station system can take immediate action when a problem occurs in the broadcast station system.

As a result, the number of after-services on the television receiver manufacturer side can be reduced, thereby reducing the economic burden on the user and manufacturer side according to the after-sales service, and can also achieve ideal broadcast transmission in a broadcasting station system.

Claims (10)

In a television receiver coping with a broadcast signal output error, A tuner unit for tuning radio waves of a selected channel frequency; A modem unit connected to a communication line with the broadcast signal transmitting side; and And a processor unit for detecting a carrier from radio waves of the selected channel frequency and transmitting a check request signal to the broadcast signal transmitting side of the selected frequency through the modem unit if the carrier fails to be detected. The method of claim 1, wherein the processor unit And a video carrier and an audio carrier detected from radio waves of the selected channel frequency. The method of claim 1, wherein the processor unit And when the tuner fails to tune the selected channel frequency, displaying a screen indicating that there is no broadcast signal input. The method of claim 1, wherein the processor unit And if the detection of the carrier fails, displaying a screen indicating that the broadcast signal output error is due to a broadcast signal transmission side. The method of claim 1, wherein the processor unit And if the detection of the carrier succeeds, displaying a screen indicating that the broadcast signal output error is due to a television receiver. In the method of coping with a broadcast signal output error, a) tuning the propagation of the selected channel frequency; b) detecting a carrier from the propagation of the selected channel frequency; and c) transmitting a check request signal to a broadcast signal transmitting side of the selected channel frequency through a modem when the carrier fails to be detected. The method of claim 6, wherein the carrier A method of coping with broadcast signal output errors, characterized in that the video carrier and the audio carrier. The method of claim 6, And if the tuning of step a) fails, displaying a screen indicating that the broadcast signal is not input. The method of claim 6, And if the detection of step b) fails, displaying a screen indicating that the broadcast signal output error is an error due to a broadcast signal transmission side. The method of claim 6, And if the detection of step b) succeeds, displaying a screen indicating that the broadcast signal output error is an error due to a television receiver.

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