KR19980039544A - Broadcasting station recognition device of television broadcasting system - Google Patents

Abstract

The present invention relates to a broadcasting station recognition apparatus of a television broadcasting system that enables a viewer to easily recognize a broadcasting station currently watching through a television receiver.

According to the present invention, a broadcast station adds and transmits its own code data to a video signal transmitted to an airwave transmission network.

In addition, in the television receiver, the user can set his or her desired identification character for a particular channel, and the identification character set in this way is stored in the data storage means together with the unique code data transmitted from the broadcasting station.

When the viewer operates the confirmation key of the input means, the control means detects the code data transmitted from the broadcasting station, searches for the broadcast identifier registered by the user based on the detected code data, and displays the broadcast identifier. Output through means.

That is, according to the present invention, since a certain broadcast identifier is always displayed for one channel broadcast regardless of the channel number or channel frequency, the viewer can always accurately recognize the channel broadcast that he or she is watching.

Description

Broadcasting station recognition device of television broadcasting system

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television broadcasting system, and more particularly, to a broadcasting station recognition apparatus of a television broadcasting system, which enables a viewer to easily recognize a broadcasting station watching through a television receiver.

1 is a block diagram showing a configuration of a general television receiver, in which reference numeral 1 is an antenna for receiving a broadcast frequency signal transmitted from a broadcasting station, and 2 is a control signal applied from a control unit 12 to be described later. A tuner for executing broadcasting stations according to the present invention, 3 is an IF amplifier for amplifying the intermediate frequency signal IF output from this tuner 2, and 4 is an audio intermediate frequency from the intermediate frequency signal output from this IF amplifier 3; It is a P / S separator for separating and outputting the signal SIF and the image intermediate frequency signal PIF.

In the drawing, reference numeral 5 is an image detector for detecting a video signal from the PIF signal and outputs a composite video signal, and 6 is based on the composite video signal output from the video detector 5. An image processor for outputting R (Red), G (Green), and B (Blue) signals corresponding to the log, 7 denotes an RGB signal output from the image processor 6 and an OSD (On Screen Display) device to be described later. A mixer which mixes and outputs the RGB and blanking signal Y 'applied from (13), and 8 drives a CRT (Cathode-ray Tube) based on the RGB signal applied from this mixer (7) to be predetermined on the CRT. It is a CRT driving unit that generates a video screen of the.

In the drawing, reference numeral 9 is a remote control device for the viewer to operate the television receiver, 10 is a receiving unit for receiving an infrared signal applied from the remote control device 9 and outputting an electric code signal corresponding thereto. Channel memory for storing channel data for tuning each broadcast channel, 12 is a control unit for controlling the entire device in accordance with the operation signal applied from the remote control device 9, 13 is a remote control device 9 operation by the viewer An OSD generator which outputs an RGB and OSD blanking signal (Y ') for visually displaying a state or an operation state of a television receiver on a CRT.

That is, in the above configuration, when the viewer operates the remote controller 9, the control unit 12 controls the OSD generator 13 to display the viewer's operation state on the CRT and to control each circuit unit. Control the television receiver as desired.

By the way, the following problem arises in the above-mentioned television receiver.

That is, in a television receiver, when a viewer operates a remote controller 9 to select a desired broadcast channel, the controller 12 reads out channel data corresponding to the broadcast channel selected by the viewer from the channel memory 11 and tunes the tuner. By controlling (2), the broadcast channel is selected as well as an international language, and the OSD generation unit 13 is controlled to display the broadcast channel number selected by the viewer so that the viewer can recognize the channel number selected by the viewer.

However, in a mountainous country such as Korea, the same broadcasting channel is detected in a different channel number, that is, in a different channel band, depending on the region, and in Korea, the channel number is different depending on the broadcasting station. It is set so that it is very difficult to recognize the channel broadcast through the channel number.

In addition, in recent years, the number of channels that can be viewed by the user has been greatly increased as a variety of new channel broadcasts have been newly established, which makes it more difficult for viewers to recognize the channel broadcasts they are watching.

Accordingly, an object of the present invention is to provide a broadcasting station recognition apparatus of a television broadcasting system in which a user can easily identify and view a broadcasting channel that the user watches.

1 is a block diagram schematically showing the configuration of a conventional general television receiver.

2 is a signal waveform diagram illustrating a composite video signal currently used in a broadcasting system.

3 is a block diagram showing a device for adding identification data of a broadcasting system according to an embodiment of the present invention;

FIG. 4 is a circuit diagram illustrating a configuration of a vertical blanking signal generator in FIG. 3. FIG.

FIG. 5 is a signal waveform diagram for explaining the operation of the apparatus shown in FIG. 2; FIG.

FIG. 6 is a block diagram illustrating the configuration of a reference clock generator and a coded section pulse generator in FIG. 3; FIG.

7 and 8 are signal waveform diagrams for explaining the operation of the configuration shown in FIG.

FIG. 9 is a circuit diagram illustrating a configuration of a data generator in FIG. 3. FIG.

Fig. 10 is a signal waveform diagram for explaining the operation of the configuration shown in Figs. 3 and 9;

Fig. 11 is a block diagram showing a detection device for detecting identification data added to a composite video signal.

FIG. 12 is a signal waveform diagram for explaining the operation of the apparatus shown in FIG. 11; FIG.

Fig. 13 is a block diagram showing a broadcasting station recognition device of a television receiver according to the present invention.

14 is a view showing a key arrangement configuration of the remote control device in FIG.

15 is a view showing an example output screen according to the present invention.

**** Brief description of the main parts of the drawing ****

1: antenna, 36: identification data setting unit,

41: integrating circuit, 42: comparison circuit,

43: multivibrator, 90: data output unit,

107: D flip-flop, 131: identification data detection unit,

132: remote control device, 133: data storage unit,

134: control unit.

The broadcast system according to the first aspect of the present invention for realizing the above object comprises code data generating means for generating unique code data of channel broadcasting according to a user's selection, and the code data generating means for a vertical blanking section of a broadcast signal. Characterized in that it comprises a data appending means for adding the unique code data generated by the.

In addition, a channel broadcasting recognition apparatus of a television receiver according to the second aspect of the present invention for realizing the above object is a broadcasting system in which code data specific to channel broadcasting is added and transmitted for a predetermined section of a composite video signal. Code means detecting means for detecting the code data unique to the channel broadcast from an image signal, input means including an input key for a viewer to input a broadcast identification character and a confirmation key for confirming the channel broadcast being viewed, the input Data storage means for correlating and storing the broadcast identifier input by the means and the code data detected by the code data detection means, display means for displaying the broadcast identifier of the channel broadcast being watched, and the input means. The code data when the identification key of the input means is selected, A control means for detecting a broadcast identifier corresponding to the code data from the data storage means based on the code data detected by the output means, and outputting and controlling the detected broadcast identifier through the display means. It features.

According to the present invention having the above-described configuration, the broadcasting station adds and transmits its own code data to the video signal transmitted to the airwave transmission network.

In addition, in the television receiver, the user can set his or her desired identification character for a particular channel, and the identification character set in this way is stored in the data storage means together with the unique code data transmitted from the broadcasting station.

When the viewer operates the confirmation key of the input means, the control means detects the code data transmitted from the broadcasting station, searches for the broadcast identifier registered by the user based on the detected code data, and displays the broadcast identifier. Output through means.

That is, in the above configuration, since a certain broadcast identifier is always displayed for one channel broadcast regardless of the channel number or channel frequency, the viewer can always accurately recognize the channel broadcast that he or she is watching.

Hereinafter, an embodiment according to the present invention will be described with reference to the drawings.

First, the basic concept of the present invention will be described with reference to FIG.

FIG. 2 is a signal waveform diagram illustrating a general composite video signal used to transmit a video signal in a broadcasting station, which is divided into a video signal section and a vertical blanking section as shown in the figure. Further, the vertical blanking section is assigned a vertical equalization pulse of 3H (H is a horizontal scanning period), a vertical synchronization pulse of 3H, a vertical equalization pulse of 3H, and a horizontal synchronization pulse of approximately 12H.

On the other hand, since the vertical blanking section is used as the return time of the scanning line in the television receiver, it is generally not displayed on the CRT of the television receiver.

Therefore, in most broadcasting technologies, the vertical blanking section is used to transmit data irrelevant to broadcast signals such as text multiplexing. Especially, the transmission of such information is approximately 15H because the horizontal synchronous pulse section is suitable. The interval of ˜18H is allocated for text multicasting and 21H for caption broadcasting.

Accordingly, in the present invention, by using a horizontal synchronization pulse section not used in the text multicasting or caption broadcasting, the broadcasting station adds predetermined code data to 10H to 14H, for example, 11H, to transmit unique identification data of the broadcasting station. In the television receiver, the identification data added to the 11H is detected and the channel broadcast indication is executed accordingly so that the viewer can accurately recognize the channel broadcast currently being watched.

3 is a block diagram showing an apparatus for adding identification data for a broadcasting system according to an embodiment of the present invention for realizing the above-described concept, and FIG. 5 is an operation waveform diagram of the apparatus shown in FIG.

In FIG. 3, reference numeral 31 denotes a synchronization separator for separating a synchronization signal from the composite video signal of FIG. 5A, which has a predetermined slice level for the composite video signal as indicated by a dotted line in FIG. By performing the synchronization signal detection, the synchronization signal as shown in Fig. 5B is separated and output.

In the drawing, reference numeral 32 denotes a vertical blanking signal generator for generating and outputting a vertical blanking signal from the sync signal [Fig. 5 (B)] output from the sync separator 31, as shown in FIG. An integration circuit 41 for integrating the synchronization signal output from the synchronization separator 31 and the signal level output from the integration circuit 41 are compared with predetermined reference voltages set by the resistors R2 and R3. And a monostable multivibrator for generating and outputting a vertical blanking signal based on the vertical synchronous detection signal output from the comparison circuit 42, and outputting a vertical synchronous detection signal corresponding to the vertical synchronous pulse section. It is comprised including 43.

In other words, as can be seen from Fig. 5B, the vertical synchronization pulse is generally set to have a lower duty ratio than the pulses of other signal sections. Therefore, when the output signal of the synchronous separator 31 is integrated into the integrating circuit 41 of FIG. 4, the integrated value in the vertical synchronous pulse section is lower than that of the other sections as shown in FIG. When the reference voltages of the resistors R2 and R3 are input to the comparator 431 having the level indicated by a dotted line in FIG. 5C, the pulse width corresponding to the vertical synchronous pulse section is shown in FIG. 5D. The signal will be output.

On the other hand, when the pulse signal applied to the input terminal A1 rises to the high level, the monostable multivibrator 43 raises its output Q to the high level, and then to the capacitor C2 and the resistor R4. If the rising edge of the high level is not inputted through the input terminal A1 for a predetermined time by the time constant set by the output, the output is reduced to the low level.

Therefore, when the time constant value of the monostable multivibrator 43 is set to T in Fig. 5E, the output ( ) Is a signal corresponding to the vertical blanking section as shown in FIG.

In FIG. 3, reference numeral 33 denotes a horizontal synchronous separator that separates the horizontal synchronous as shown in FIG. 5 (F) from the signal of FIG. 5 (B) output from the synchronous separator 31, which is, for example, monostable. It consists of a Malt Vibrator.

Further, reference numeral 34 denotes a reference clock generator for generating and outputting 910f _H , which is, for example, a 910 divided signal of the horizontal synchronization frequency f _H , from the horizontal synchronization signal output from the horizontal synchronization separator 33. Broadcasting station identification data is based on a reference clock output from the reference clock generator 34, a vertical blanking signal output from the vertical blanking signal generator 32, and a horizontal synchronization signal output from the horizontal synchronization separator 33. A coding section pulse generation unit for generating a coding signal for addition.

6 is a block diagram showing the configuration of the reference clock generator 34 and the coding section pulse generator 35, which will be described with reference to the operation timing diagrams shown in FIGS.

In FIG. 6, the reference clock generator 34 compares the phase difference between the horizontal synchronization signal F and the frequency signal applied by the frequency divider 344, which will be described later, and selects a voltage signal corresponding to the phase difference. A PLL (Phase Locked Loop) circuit 341, a voltage controlled oscillator 342 for outputting a predetermined frequency signal in accordance with the voltage signal output from the PLL circuit 341, and an output from the voltage controlled oscillator 342 And a clock buffer 343 for buffering the frequency signal, and a divider 344 for dividing the frequency signal output from the clock buffer 343 (1/910).

That is, in the above configuration, a voltage signal corresponding to the phase difference between the output signal of the divider 344 and the horizontal synchronization signal is applied to the voltage controlled oscillator 342 so that the output frequency of the voltage controlled oscillator 342 is increased. The output frequency signal of the voltage controlled oscillator 342 is divided through the divider 344 to be input to the PLL circuit 341.

Accordingly, the horizontal synchronizing signal and the output signal of the divider 344 are adjusted so that their frequencies are the same. When the frequency of the horizontal synchronizing signal is 15.734 KHz, the signal frequency output from the voltage controlled oscillator 342 is 14.418 MkHz (910 x 15.734 KHz), and this frequency signal is output as a reference clock.

On the other hand, the coding section pulse generator 35 is configured to invert the inverter IV1 for inverting the vertical blanking signal E applied from the vertical blanking signal generator 32 and the output H of the inverter IV1. A first counter 351 that counts the horizontal synchronization signal F as a reset signal and outputs a high level signal when the count value reaches a predetermined value, for example, 5, from the high counter signal. Is applied, the second and third counters 352 and 353 and the second counter 352 of down counting a predetermined count value based on the reference clock G output from the reference clock generator 34. And an AND gate AND2 for performing an AND operation on the output and the inverted output of the third counter 353.

Here, as shown in FIG. 7, the first counter 351 performs the counting operation at the rising edge of the horizontal synchronization signal F when the output H of the inverter IV1 becomes high level, and the corresponding count value is 5. In other words, when the horizontal scanning period of 11H is reached, a high level signal is output. The high level output continues until the output H of the inverter IV1 becomes low level and the reset signal is input.

In addition, when the output I of the first counter 351 rises to a high level, the second counter 352 sets the number of reference clocks G corresponding to the T1 section of FIG. 8 as its initial value. Then, down counting is executed at the rising edge of the reference clock, and when the count value reaches 0, a high level detection signal is output (Fig. 8 (J)). In addition, when the output I of the first counter 351 rises to a high level, the third counter 353 sets the number of reference clocks G corresponding to the section T2 of FIG. 8 as its initial value. Then, down counting is performed at the rising edge of the reference clock, and when the count value reaches 0, a high level detection signal is output (Fig. 8 (K)). The second and third counters 352 and 353 are cleared when the output I of the first counter 351 becomes low.

Subsequently, the output of the second counter 352 and the inverted output of the third counter 353 are logically multiplied by the AND gate AND2, so that the AND gate AND2 has a horizontal scanning period of 11H as shown in FIG. Corresponding pulse signal is outputted.

In FIG. 3, reference numeral 36 denotes an identification data setting unit including a plurality of dip switches S1 to S5 for a user to give a unique identification number to a broadcasting system, which is a resistor R31 with respect to a power supply voltage Vcc. R35 and dip switches S1 to S5 are connected in series, respectively, so that 1 or 0 data is input to the data generator 37 to be described later by turning on or off the dip switches S1 to S5. .

3, reference numeral 37 denotes a data generator for generating predetermined code data to be added to the composite video signal according to the identification data set by the identification data setting unit 36. In FIG.

9 is a configuration diagram showing the configuration of the data generator 37, in which the identification data setting unit 36 sets one or zero data bits set by the dip switches S1 to S5 at different predetermined timings. A plurality of data output units 90 _{1 to} 90 _{5 to} output and an orifice OR1 to logically output the data output from the data output units 90 _{1 to} 90 ₅ are configured.

The data output units 90 _{1 to} 90 ₅ down-count a predetermined count value based on the reference clock G output from the reference clock generator 34, and when the count value becomes 0, for example, a high level is generated. A counter 37 for outputting a counting signal of "", an AND gate < RTI ID = 0.0 > AND5 < / RTI > And AND gate AND3 for performing an AND operation on the inverted signal of Q) and the horizontal synchronizing signal F and applying it to the counter 37 as a reset signal.

In Fig. 9, IV3 ₁ to IV3 ₅ and IV4 _{1 to} IV4 ₅ are inverters for delaying each output of the counter 37 applied to the AND gate AND3 for a predetermined time.

Here, the counter (37 ₁₎ is the reference clock (G) suhyo the running-down counting at the rising edge of the reference clock to the its initial value, and when the high level the coefficient is zero in which a T3 interval of 10 Outputs a detection signal. Further, the counter (37 ₂₎ is the number of the T4 interval, the counter (37 ₃₎ of Figure 10 is T5, the counter (37 ₄₎ is T6, the counter (37 ₅₎ is a reference clock (G) that corresponds to the T7 that Down counting is performed at the rising edge of the reference clock as an initial value, and when the count reaches 0, a high level detection signal is output. And, from these counters (37 _{2-37 5),} so that the execution logic is multiplied by the signal coefficient clear operation again the inverted signal and the horizontal synchronization signal (F) of the output signal, the counter (37 _{2-37 5)} The pulse signal having a predetermined pulse width is output at the timing as indicated by the dotted line in FIG. Therefore, for example, when the dip switches S1, S2, and S4 are turned on in the identification data setting unit 36, the output of the AND gates AND5 ₁ , AND5 ₂ , and AND5 ₄ becomes 1, so that the output of the oragate OR1 is decreased. It is output as a pulse signal as shown in FIG.

In addition, the width of the pulse signal is set to a width corresponding to the delay time at the inverters IV3 and IV4 and the AND gate AND3, respectively.

In FIG. 3, reference numeral AND1 denotes an AND gate that logically multiplies the pulse signal output from the coding section pulse generator 35 and the data bit output from the data generator 37, and 38 denotes the AND gate ( An adder for adding the output of AND1) to the composite video signal, wherein the AND gate AND1 is output from the data generator 37 of FIG. 10L and the output of the coding section pulse generator 35 described above. The result of the logical multiplication of (N) of FIG. 10 is to output (O) of FIG. 10, and the output of the AND gate AND1 is added to the composite video signal through the adder 38, thereby adding from the adder 38. The unique identification data of the channel broadcast as shown in FIG.

Subsequently, the composite image signal output from the adder 38 is modulated by the modulator 39 and then transmitted to the airwave transmission network through the antenna 40.

That is, in the apparatus for adding identification data of the broadcasting system having the above-described configuration, the horizontal synchronization signal is separated from the composite video signal, and based on this, it has a frequency corresponding to N times (910 times in the above example) of the horizontal synchronization signal. The reference clock signal is generated.

And a coding section pulse of a horizontal synchronization pulse for adding identification data by counting the horizontal synchronization signal based on the vertical blanking signal, and counting the reference clock by a predetermined value based on the horizontal synchronization pulse. After generating the pulse signal corresponding to the predetermined position of the horizontal synchronization pulse, the identification data set by the dip switches S1 to S5 of the identification data setting unit 36 are selectively added to the composite video signal based on the generated pulse signal. The data will be sent.

Therefore, the apparatus for adding identification data of the above-mentioned broadcasting system can add and transmit channel-specific identification data to a broadcast signal with a relatively simple configuration.

11 is a block diagram showing an identification data detecting apparatus for detecting the corresponding identification data from the composite video signal to which the identification data is added according to the above method.

In FIG. 11, reference numeral 101 denotes a synchronization separator for separating the synchronization signal as shown in FIG. 5B from the detected composite video signal, and 102 denotes a synchronization signal B output from the synchronization separator 101. A vertical blanking signal generator for generating and outputting a vertical blanking signal E corresponding to a horizontal synchronous pulse period from the vertical blanking section, and 103 is a horizontal synchronous signal from the synchronous signal B output from the synchronous separator 101; A horizontal synchronous separator for separating and outputting (F), 104 is an integer multiple of the horizontal synchronous signal F based on the horizontal synchronous signal F output from the horizontal synchronous separator 103 (in this example, 910 times). A reference clock generator for generating and outputting a frequency signal corresponding to the reference clock) 105 is added to the composite video signal based on the vertical blanking signal E, the horizontal synchronization signal F, and the reference clock G. Pulse corresponding to the identification data signal section A coding period pulse generator generating a number (L), these circuit portions is the structure and circuit configuration and operation of the above-described FIG. 3 is substantially the same.

In FIG. 11, reference numeral 106 denotes a first switching unit that is turned on when the pulse signal L output from the coding section pulse generator 105 becomes high level, and 107 denotes a reference clock generator 104. The output clock signal is the input clock, and the D input thereof is a D flip-flop coupled to the composite video signal A through the first switching unit 106.

As shown in FIG. 12, the coding section pulse generator 105 outputs a high level signal L corresponding to the identification data addition section of the input composite video signal A, and thus the coding section pulse. When the signal L becomes high, the first switching unit 106 is turned on so that the composite video signal of the portion corresponding to the input terminal D of the D flip-flop 107 is applied.

On the other hand, the D flip-flop 107 is applied to the output (G) of the reference clock generator 104 as the input clock, so that the D flip-flop 107 as shown in Figure 12 (R) Identification data added to the same composite video signal is detected and output.

That is, in the above configuration, after the synchronization signal is separated from the composite video signal, a reference clock signal having a frequency corresponding to N times (910 times in the above example) of the horizontal synchronization signal is generated.

And generating a pulse signal corresponding to the aspect ratio data addition interval of the composite video signal by counting the horizontal synchronization signal based on the vertical blanking signal and counting the reference clock based on the horizontal synchronization pulse. Then, by performing data bit detection on the composite video signal during the section corresponding to this pulse signal, the identification data additionally sent by the transmitting side is detected.

FIG. 13 is a block diagram showing a channel broadcast recognition apparatus of a television receiver employing the above-described identification data detection apparatus. In FIG. 13, the same parts as in FIG. .

In the figure, reference numeral 131 denotes an identification data detector which has a configuration as shown in FIG. 11 and detects unique identification data of channel broadcast from the composite video signal output from the video detector 5.

In addition, reference numeral 132 in the drawing is a remote control device for the viewer to control the television receiver, in particular to perform the broadcasting station recognition function according to the present invention.

FIG. 14 is a diagram showing a key arrangement of the remote control apparatus 132, which is a mode setting key 1321 for a viewer to select a broadcasting identification character storing mode for inputting an identification character desired by the viewer for a predetermined channel broadcasting. ), A plurality of number keys 1322, direction keys 1323 for moving the cursor displayed on the CRT, enter key 1324 for selecting characters displayed at the cursor position, and the viewer And a confirmation key 1325 for confirming the broadcast channel.

In FIG. 13, reference numeral 133 denotes a data storage unit which stores the broadcast identifier input by the viewer through the remote controller device 132 and the broadcast unique identification data detected by the identification data detection unit 131. 134 is a control unit which controls the entire apparatus and executes and controls the broadcast ID character storage and display function according to the present invention.

Next, the operation of the device having the above configuration will be described.

When the viewer selects the channel 16, for example, while watching a broadcast program, and operates the mode setting key 1321 of the remote controller 132 to select the broadcast ID character storage mode, the controller 134 controls the OSD generator. (13) is controlled to output a guide screen as shown in Fig. 15 on the CRT. At this time, the guide screen includes a mode display, a broadcast channel display currently being viewed, and a plurality of character displays. Also, the controller 131 is based on the identification data detected by the identification data detector 131 and the data storage unit 133. ), And if there is a broadcast identification character stored by the viewer before it is displayed on the broadcast identification character display unit 151.

On the other hand, when the viewer operates the direction key 1323 of the remote control device 132 in the above state, the control unit 134 accordingly moves and controls the cursor 152 on the CRT in Figure 15, the cursor to the desired character position When the user enters the enter key 1324 of the remote control device 132 after moving 152, the controller 134 displays the character selected by the viewer on the broadcast identifier character display unit 151.

In this case, when the viewer manipulates the number key 1322 of the remote controller 132, the corresponding number is displayed on the broadcast identifier display unit 151.

When the viewer inputs all desired broadcast identifiers and then selects the mode setting key 1321 of the remote controller 132, the controller 134 may display the broadcast identifiers input by the viewer, that is, the broadcast identifier character display unit ( The identification character displayed on the 151 is stored in the data storage unit 133 together with the identification data detected by the identification data detection unit 131 and then returned to the original broadcast screen state.

In addition, when the viewer operates the direction key 1323 and the enter key 1324 of the remote control apparatus 132 and selects deletion from the character display displayed on the CRT, the identification character displayed on the identification character display unit 151 is displayed. All will be deleted. In other words, the user is deregistered the broadcast identifier that the user has registered before or now.

Subsequently, when the viewer selects the confirmation key 1325 of the remote control device 132 while watching the predetermined broadcast channel in the state where the broadcast identifier is registered for the predetermined broadcast channel as described above, the controller 134 The data storage unit 133 is read based on the unique identification data detected by the identification data detection unit 131 to detect whether an identification character corresponding to the detected unique identification data is registered.

When there is a broadcast identifier registered by the viewer in the detection process, the controller 134 controls the OSD generator 13 to display the identifier on the CRT, and when the viewer does not have a broadcast identifier. The current channel number is displayed on the CRT.

Therefore, in the above embodiment, the same broadcast identifier letter registered by the viewer is always displayed on the CRT for one channel broadcast having unique broadcast identifier data regardless of the channel number, so that the viewer is watching the channel broadcast. Can be correctly recognized.

In addition, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the technical scope of the present invention.

As described above, according to the present invention, it is possible to realize a broadcasting station recognition device of a television broadcasting system in which a user can easily identify and view a broadcasting channel that he or she is watching.

Claims (5)

Code data generating means for generating unique code data of channel broadcasting according to a user's selection; And data adding means for adding unique code data generated by said code data generating means to a vertical blanking section of a broadcast signal. 2. The apparatus of claim 1, wherein the data adding means comprises: horizontal synchronous separating means for separating a horizontal synchronous signal from a composite video signal, vertical blanking signal generating means for generating a vertical blanking signal from the composite video signal, and based on the horizontal synchronous signal; A reference clock generating means for generating a reference clock having a predetermined frequency, and a coding section spreads for generating a coding pulse corresponding to a predetermined horizontal synchronization pulse section of the vertical blanking section based on the vertical blanking signal, the horizontal synchronization signal, and the reference clock. And a data adding means for adding code data generated by said code data generating means to a composite video signal based on said generating section pulse. The broadcast system according to claim 1, wherein the code data generating means comprises a plurality of dip switches. In a broadcasting system in which code data specific to channel broadcasting is added and transmitted to a predetermined section of a composite video signal, Code data detecting means for detecting code data specific to the channel broadcast from a composite video signal; An input means having an input key for a viewer to input a broadcast identification character and a confirmation key for confirming a channel broadcast being watched; Data storage means for correlating and storing the broadcast identifier input by the input means and the code data detected by the code data detection means; Display means for displaying a broadcast identifier; In addition to controlling the broadcasting identification character input function by the input means, and when the confirmation key of the input means is selected, broadcasting corresponding to the code data from the data storage means is performed based on the code data detected by the code data detecting means. And a control means for detecting an identification character and outputting and controlling the detected broadcasting identification character through the display means. 5. The channel broadcasting of the television receiver as claimed in claim 4, wherein the control means displays and controls the channel number through the display means when there is no broadcasting identifier character corresponding to the code data detected by the code data detecting means. Recognition device.