KR100255009B1 - Time setting error preventing method for broadcasting satellite television - Google Patents

Abstract

PURPOSE: A method for preventing an error of a time setting of a satellite broadcasting television is provided to accurately set present time by compensating an error of time generated while a satellite broadcasting signal from a television broadcasting station is relayed through a communication satellite by a compensated time previously setup. CONSTITUTION: A parabola antenna(2) receives a satellite broadcasting signal. A BS converter(4) lowly amplifies the signal. A tuner(6) tunes the signal to a relevant broadcasting channel. A video IF unit(8) performs a video intermediate frequency amplification of the signal. A video detection/amplification unit(10) separates and detects a video signal from the signal. A video signal processing unit(12) separates a luminescence and a chrominance signal from the signal. A synchronism separation unit(18) separates a composite synchronous signal from the video signal. A vertical/horizontal deflection driving unit(20) generates a vertical/horizontal deflection driving signal. A data decoder(28) decodes additional information data. A control unit(32) is composed of an input port(34), a CPU(36), a memory(38), a timer(40) and an output port(42). An OSD signal processing unit(44) generates OSD display data. A signal conversion unit(46) performs an analog conversion of the OSD display data.

Description

How to prevent errors in the time setting of satellite TV {TIME SETTING ERROR PREVENTING METHOD FOR BROADCASTING SATELLITE TELEVISION}

The present invention relates to a method for preventing error in time setting of a satellite broadcasting television, and more particularly, a time elapsed while being relayed through a broadcasting satellite or a communication satellite which is a repeater from a television broadcasting station in a satellite broadcasting television which receives and reproduces a satellite broadcasting signal. The present invention relates to a time setting error prevention method of a satellite broadcasting television for preventing the time setting from being made due to an error value of time information of a satellite broadcasting signal generated due to an error.

Recently, in the satellite broadcasting method of transmitting a television broadcasting signal using a broadcasting satellite (BS) or a communication satellite (CS), a television broadcasting signal transmitted from a terrestrial television broadcasting station is relayed and resent to the ground. In other words, televisions equipped with parabolic antennas receive and reproduce the satellite broadcast signals.

According to the satellite broadcasting transmission system which reproduces the satellite broadcasting method using such a broadcasting satellite or a communication satellite, the carrier signal as a composite signal is FM-modulated by multiplexing the video signal and the audio signal. In this case, PCM processing the 1.3MHz band audio signal is a quadrature phase shift keying (QPSK) signal with 5.727272MHz voice carrier and multiplexed on the video signal. In the case of voice, the frequency shift of 6.5MHz enables transmission of the earth station to 14GHz, while the satellite side receives the transmission signal and then converts the frequency to 12GHz.

In a receiver for receiving such a satellite broadcast signal with an appropriate sensitivity, a parabolic antenna for receiving a SHF frequency signal of 3 to 13 GHz with a good sensitivity is provided, and a radio wave signal received from the parabola antenna is set at a frequency of 1/10. Low Noise Block-Down Converter (LNB) is provided as a low noise and low amplifying converter, and the TV tuner side converts a low noise and low amplified satellite broadcasting signal into a predetermined broadcasting channel through the LNB to convert a video / audio signal. It is supplied to the processing means to be renewable.

In addition, in order to provide additional information, the satellite broadcast signal superimposes and transmits information data in the form of digital signals within the vertical retrace period of the video signal. By inputting time information or the like through the information data, automatic setting of time, screen display of characters or codes with various information contents, and the like are performed.

However, in the case of such a satellite broadcast signal, since a broadcast signal transmitted from a television station or an earth station passes through a broadcast satellite or a communication satellite corresponding to a repeater, some time has passed from transmission and reception of the satellite broadcast signal. In the case of the time information from the additional information superimposed on the satellite broadcast signal in response to the elapsed time, the incorrect time is provided. Therefore, the receiving side TV of the satellite broadcast automatically uses the time information. When the time is set, there is a disadvantage that the time is set incorrectly.

Accordingly, the present invention has been made in view of the above circumstances, and when the time setting is performed by the time information data superimposed on the satellite broadcast signal and transmitted from the satellite broadcast television, the satellite broadcast signal from the television broadcast station is transmitted via the communication satellite. It is an object of the present invention to provide a method for preventing error in time setting of a satellite broadcasting television which corrects a time error inevitably generated during the relaying to a preset correction time so that time setting is performed.

In addition, another object of the present invention is to receive the time information data for setting the time to the satellite broadcast signal according to the setting of the set prohibition mode by the user's key input, when the satellite broadcast signal is tuned and reproduced on the satellite broadcast television If the time setting operation itself is prohibited, it provides a method for preventing the error of the time setting of the satellite broadcasting television which prevents the incorrect time setting according to the time error generated while the satellite broadcasting signal from the TV broadcasting station is relayed through the communication satellite. have.

In order to achieve the above object, according to the method for preventing error in time setting of a satellite broadcasting television according to an embodiment of the present invention, a satellite broadcasting television receiving a satellite broadcasting signal through a parabola antenna and a BS converter to perform video / audio playback is performed. And extracting additional information data superimposed on the satellite broadcast signal in a state of reproducing and reproducing a channel of the satellite broadcast signal, and if time set data exists in the extracted additional information data, Setting the current time by adding a preset compensation time to the set time by the set time, and if the set prohibition mode of the time setting is set by a key input of the function setting unit from the extraction step, the time setting function The method for preventing errors in the time setting of the satellite broadcasting television comprising the step of prohibiting the operation The ball.

According to the present invention configured as described above, when time set data transmitted by being superimposed on the satellite broadcast signal as additional information is received in a television having a reception function of satellite broadcasting, compensation set in advance at the set time by the time set data is received. When the time is added and automatically set as the current time, or when the reception of the time set data is determined, the control operation is prohibited so that execution of the time automatic setting function by the time set data is prohibited.

1 is a block diagram showing an apparatus for preventing error in time setting of a satellite broadcasting television to which the method of the present invention is applied;

2 is a flowchart illustrating an operation in accordance with the method of the present invention.

Explanation of symbols on the main parts of the drawings

2: satellite antenna, 4: BS converter,

6: tuner, 8: video IF part,

10: video detector / amplifier, 12: video signal processor,

14: video output unit, 16: CRT,

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

22: voice detection / amplification unit, 24: voice signal processing unit,

26: data slicer, 28: data decoder,

30: function setting section, 32: control section,

34: input port, 36: CPU,

38: memory, 40: timer,

42: output port, 44: OSD signal processing unit,

46: signal conversion 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 a time setting error prevention apparatus of a satellite broadcasting television to which the method of the present invention is applied. In FIG. 1, reference numeral 2 receives a satellite broadcasting signal of a 3 to 13 GHz band from a broadcasting satellite. Parabola antenna is shown, and 4 denotes a BS converter that performs low noise and low amplification of the satellite broadcast signal received through the parabola antenna 2 in a frequency band of about 1/10 of a reception frequency.

In addition, reference numeral 6 receives channel tuning data for channel conversion of the satellite broadcasting signal from the control unit 32, which will be described later, tunes the satellite broadcasting signal to the corresponding broadcasting channel, and converts the tuned satellite broadcasting signal into an intermediate frequency. A tuner for converting and outputting the signal in the form of a signal is shown, and 8 denotes an image IF unit for amplifying the image intermediate frequency of the tuned satellite broadcast signal.

In addition, reference numeral 10 denotes an image detection / amplification unit which separately detects an image signal from the intermediate frequency-amplified satellite broadcast signal and amplifies the signal to an amplification level capable of processing image signals, and 12 denotes the detected / amplified image signal. Denotes an image signal processing unit which separates the luminance signal and the color difference signal and outputs the composite image signal in the form of a composite image signal through luminance adjustment and color demodulation processing, and 14 denotes a scan screen on the CRT (16) screen. Shows an image output section for amplifying so as to be playable.

Reference numeral 18 denotes a synchronization separator for separating the composite synchronization signal from the image signal from the image detection / amplification unit 10, and 20 denotes the vertical / horizontal synchronization signal by the vertical / horizontal synchronization signal by the separated composite synchronization signal. A horizontal deflection drive signal is generated to represent a vertical / horizontal deflection drive unit which is driven for deflection of an image scan line by the vertical / horizontal deflection coils of the CRT 16.

Further, reference numeral 22 denotes a voice detector / amplifier which separates and detects an audio signal from the image intermediate frequency-amplified satellite broadcast signal and amplifies the signal to an amplification level capable of processing a voice signal. 24 denotes an audio signal detected and amplified. An audio signal processing unit for reproducing a voice signal is reproduced.

Reference numeral 26 denotes a data slicer which performs a data slice operation to extract additional information data, that is, time set data, which are superimposed and transmitted in the vertical retrace period by the composite synchronization signal separated from the synchronization separator 18, 28 denotes a data decoder which decodes the extracted additional information data, that is, time set data.

Reference numeral 30 is composed of a matrix button unit installed in a predetermined portion of the remote control remote control unit or the control panel of the main body, and sets an execution command of overall functional operation such as channel selection operation or volume adjustment operation for tuning of a satellite broadcast signal. In addition, according to an embodiment of the present invention, key setting is performed for an automatic setting operation of time based on time set information according to additional information of the satellite broadcast signal, or according to another embodiment of the present invention, A function setting section for performing key operation for setting the set prohibition mode to prohibit the automatic setting of the time at the time of reception is shown.

Further, reference numeral 32 denotes a control unit which performs execution control on the overall functional operation allocated to the television with the satellite broadcasting reception function according to the key setting of the function setting unit 30, wherein the control unit 32 is one of the present invention. According to the embodiment, when the execution of the automatic setting mode of time is set through the function setting unit 30, the preset compensation time is added to the time set data decoded by the data decoder 28 to set the current time. To control.

In addition, when the time set prohibition mode is set through the function setting unit 30 according to another embodiment of the present invention, the control unit 32 receives the time set data through the data decoder 28. The operation of automatically setting the current time is prohibited by the time set data.

Here, the control unit 32 receives an input port 34 for receiving data from an external signal processing stage including the function setting unit 30 and the data decoder 28, and received through the input port 34. CPU 36 for performing data recognition or comparison / computation processing; memory 38 for storing the received data or result data according to the result of comparison / computation by the CPU 36; And a timer 40 for clocking the current time set according to the manual time setting function, and an output port 42 for outputting control data generated as a result of the data processing operation of the CPU 36 to the outside. .

Further, reference numeral 44 denotes an OSD signal processing unit for generating OSD display data for displaying the current time automatically set as a preset compensation time for the time set data of the satellite broadcast signal under the control of the control unit 32, Reference numeral 46 denotes a signal converter which analog-converts the generated OSD display data according to the generated current time and outputs the image on the screen to the video signal processor 12.

Next, the operation of the present invention made as described above will be described in detail with reference to the flowchart of FIG. 2.

First, when the channel of satellite broadcasting is tuned by the tuner 6 in step 50, it is received through the parabola antenna 2 and the low-noise, low-amplification satellite broadcasting signal is transmitted through the tuner 6 through the BS converter 4. The image is converted into an intermediate frequency signal and amplified by the image intermediate frequency through the image IF unit 8. The image detector / amplifier 10 separates and detects the image signal from the satellite signal with the intermediate frequency amplifier. The video signal processed by the video signal processor 12 is reproduced on the screen of the CRT 16 via the video output unit 14 in the form of a composite video signal of the R / G / B signal.

At this time, the synchronization separator 18 separates the composite synchronization signal from the image signal according to the satellite broadcast, and the additional information data extracted through the data slicer 26 is decoded so that it can be recognized by the data decoder 28. Is processed.

In this state, the flow advances to step 51, and the controller 32 determines whether time set data for automatic setting of the current time is received in the additional information data decoded by the data decoder 28.

As a result of the determination in step 51, if it is determined that time set data is being received from the additional information data of the satellite broadcast signal, the control proceeds to step 52, whereby the key setting of the function setting unit 30 is set for the automatic time setting function. Determines whether the set prohibition mode is set.

As a result of the determination in step 52, when it is determined by the function setting unit 30 that the set prohibition mode for the automatic time setting function is set, the control proceeds to step 53 to prohibit the setting operation of its own current time. Control is performed.

On the other hand, if it is determined that the set prohibition mode for the automatic time setting function is not set as a result of the determination in step 52, then control proceeds to step 54 and the preset compensation time is added to the set time by the time set data. Will be processed.

After the processing of step 53 or step 54, the process proceeds to step 55, whereby the controller 32 allows the timer 40 to normally perform the clocking operation according to the set present time.

According to the present invention made as described above, by applying a compensation time to the time set data superimposed on the satellite broadcast signal received from a television capable of receiving satellite broadcast to automatically set as a correct time or to set the time By being prohibited in advance, there is an advantage that the present time, which is revealed in the television itself, can be set accurately.

Claims (1)

In the satellite broadcasting television receiving the satellite broadcasting signal through the parabola antenna and the BS converter to perform the video / audio playback, Extracting additional information data superimposed on the satellite broadcast signal in a state in which the channel of the satellite broadcast signal is tuned and reproduced; Setting the current time by adding a preset compensation time to the set time by the time set data, if time set data exists in the extracted additional information data; And when the set prohibition mode of time setting is set by the key input of the function setting unit 30 from the extracting step, the operation of the time setting function by the time set data is prohibited. How to prevent error setting of broadcast television.

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