KR19990005418A - Television receiver with OSD output function of certain size when switching screen mode - Google Patents

Abstract

The present invention has a OSD output function of a certain size when the screen mode is switched so that the size of the OSD subtitle can be consistently output even when switching from the normal screen mode to the wide screen mode in a television receiver having a wide screen output function A television receiver, comprising: a remote control device 9 for selecting a normal screen mode or a wide screen mode, and an RGB for visually displaying an operation state of the remote control device 9 or an operation state of the television receiver on a CRT. A television receiver having an OSD clock generator 21a for outputting a signal and an OSD blanking signal Y '; A first setting unit for setting an OSD clock signal in a normal screen mode state, a second setting unit for generating an OSD clock signal in a wide screen mode state, the OSD clock generating unit 21a and first and second settings A connection switching unit 33 installed between the units 31 and 32 and switched to the first setting unit 31 or the second setting unit 32 according to a predetermined control signal, and the remote control device 9. And a controller 21 for controlling the connection switching unit 33 according to the selected screen mode state to switch to the first setting unit 31 or the second setting unit 32.

Description

Television receiver with OSD output function of certain size when switching screen mode

The present invention relates to a television receiver having a wide screen output function, and in particular, the OSD output of a certain size when switching the screen mode, so that the size of the OSD subtitle can be consistently output even when switching from the normal screen mode to the wide screen mode A television receiver having a function is provided.

At present, a television receiver employs an OSD function for visually displaying various operating conditions of a user's remote control operation or a television receiver on a CRT.

1 is a configuration diagram schematically showing the configuration of a television receiver having the OSD function.

In Fig. 1, reference numeral 1 is an antenna for receiving a broadcast frequency signal, 2 is a tuner for tuning a predetermined broadcast channel from a frequency signal received through this antenna 1, and 3 is a tuner 2 in this tuner 2. IF amplifier part for amplifying the output intermediate frequency (IF) signal, 4 is P which separates the audio intermediate frequency (SIF) and the image intermediate frequency (PIF) from the intermediate frequency signal output from the IF amplifier (3) / S separator.

In the drawing, reference numeral 5 denotes an image detector for detecting a video signal from a PIF signal output from the P / S separator 4 and outputting a composite video signal (CV). 6 denotes an image processor which processes the composite image signal output from the image detector 5 and outputs R (Red), G (Green) and B (Blue) signals corresponding thereto, and 7 denotes the image processor 6 ) Is a mixer which mixes the RGB signal outputted from the < RTI ID = 0.0 >) < / RTI >

In the drawing, reference numeral 9 denotes a remote control device having a plurality of operation keys for the viewer to operate the television receiver, and has a screen mode switching key 9a for selecting a normal screen mode or a wide screen mode. Reference numeral 10 denotes a receiver for converting an infrared signal applied from the remote controller 9 into an electric code signal corresponding thereto, and 11 denotes an operation state of the remote controller 9 or an operation state of a television receiver on the CRT. An OSD generator for outputting RGB and an OSD blanking signal Y 'for visual display, 12 is an OSD memory for storing various control data for controlling the OSD generator 11.

Here, the OSD memory 12 stores the caption data generated by the OSD generator 11 and the size, position and color data of the OSD display.

In the drawing, reference numeral 13 denotes a control unit which controls the entire apparatus according to the operation of the remote controller 9.

In the above configuration, when the viewer operates the remote control device 9, the control unit 13 controls the circuit unit according to the input operation signal, and also OSD data corresponding to the operation signal from the OSD memory 12. The readout is supplied to the OSD generator 11.

The OSD generator 11 has an inductance for determining a generation pulse provided therein based on OSD data applied from the OSD memory 12 according to horizontal and vertical synchronization signals applied from a synchronization signal detector (not shown). A pulse is generated through an oscillator (not shown) including L1) and conductances C1 and C2, and the R, G, and B signals are set and output at appropriate positions.

On the other hand, the mixer 7 is set to a state in which the RGB signal applied from the image processing unit 6 is output in a normal state, and when the OSD blanking signal Y 'is input from the OSD generating unit 11, this OSD is displayed. The RGB signal applied by the generator 11 is output.

Accordingly, when the RGB and OSD blanking signals Y 'are output from the OSD generator 11 as described above, the corresponding RGB signals are applied to the CRT through the CRT driver 8, thereby outputting a predetermined OSD display on the CRT. .

By the way, in the above-described television receiver, the size of the output screen is generally output as a screen having a 4: 3 aspect ratio. When the wide screen mode has a function having a 16: 9 aspect ratio, the viewer is provided with the remote control device ( When switching to the wide screen mode by operating the screen mode switching key 9a provided in 9), the image output through the CRT screen is compressed and output.

Accordingly, the OSD guide caption display for displaying the operation state of the television receiver is also compressed and output according to the screen state.

Therefore, a viewer who is watching a program of a television receiver does not easily recognize the compressed OSD guided subtitles, resulting in a problem that the efficiency of the television receiver is degraded.

Accordingly, the present invention has been made in view of the above-described circumstances, so that the size of the OSD subtitle which displays the operation status and the like even when the screen size mode is changed in the television receiver can be output constantly regardless of the screen size mode change. It is an object of the present invention to provide a television receiver having a certain size of OSD output function when switching the screen mode.

1 is a configuration diagram schematically showing a configuration of a television receiver having an OSD function described above.

2 is a view for explaining the basic concept of the present invention.

Figure 3 is a block diagram showing the internal configuration of a television receiver having a constant size OSD output function when switching the screen mode according to an embodiment of the present invention.

FIG. 4 is an operation flowchart for explaining the operation of the apparatus of FIG.

Explanation of symbols for the main parts of the drawings

1: antenna 2: tuner

3: IF amplification unit 4: P / S separation unit

5: Image detector 6: Image processor

7 mixer 8 CRT drive unit

9: remote control unit 10: receiving unit

11: OSD generator 12: OSD memory

13, 21: control unit 21a: OSD clock generation unit

31: first setting unit 32: second setting unit

33: connection switching unit 34: mode state storage unit

A television receiver having a constant size OSD output function when switching the screen mode according to the present invention for realizing the above object, a remote control device for selecting a normal screen mode or a wide screen mode, the operation state of the remote control device or a television receiver A television receiver having an OSD clock generating unit for outputting an RGB signal and an OSD blanking signal (Y ') for visually displaying an operation state of a CRT; A first setting unit for setting an OSD clock signal in a normal screen mode state, a second setting unit for generating an OSD clock signal in a wide screen mode state, and between the OSD clock generation unit and the first and second setting units A connection switching unit installed and switched to the first setting unit or the second setting unit according to a predetermined control signal, and the first setting unit or the second setting by controlling the connection switching unit according to the screen mode state selected by the remote controller device. It characterized in that it comprises a control unit for switching to the negative connection.

According to the present invention having the above configuration, when switching from the general screen mode state to the wide screen mode while watching television, the size of the OSD guided subtitle which displays the operation state and the like is constantly output without compression.

Therefore, it is possible to prevent the viewer's TV viewing efficiency from being lowered.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

First, the basic concept of the present invention will be described.

2 is a view for explaining the basic concept of the present invention, (A) is a device configuration, reference numeral 21 is a control unit for controlling the overall signal and the OSD signal generation, the inside of the OSD clock A clock generator 21a for generating a is provided. The clock generator 21a includes an inductance L1 and conductances C1 and C2. The generated clock is generated differently according to the values of L1, C1, and C2.

Therefore, a bar that thereby the control section 21, the synchronization signal detector (not shown) received is the vertical synchronizing signal (V _S) and a horizontal synchronizing signal (H _S), generating an OSD clock via a clock generator (21a) from On the basis of the OSD data of the OSD memory 12, for example, as shown in (b) of FIG. 2, the G signal is displayed in case of 6 clocks, the R signal in case of 8 clocks, and 11 clocks. In this case, it is controlled to output the B signal.

However, in the wide screen mode as described above, the OSD clock should be adjusted, and the L and C values that determine the OSD clock should be set differently.

Therefore, in the present invention, the control unit 21 according to the mode selected through the remote control device 17 by installing the setting unit consisting of L and C for determining each OSD clock according to the state of the normal screen mode and wide screen mode, respectively. To switch to the appropriate setting.

FIG. 3 is a block diagram illustrating an internal configuration of a television receiver having a certain size of OSD output function when switching a screen mode according to an embodiment of the present invention. In FIG. 3, the same reference numerals are used for the same parts as those of FIG. 1. Are omitted and their detailed description is omitted.

In FIG. 3, reference numeral 31 denotes a first setting unit for setting an OSD clock signal in a normal screen mode (for example, 4: 3 aspect ratio), and 32 denotes an OSD clock signal in a wide screen mode (for example, 16: 9 aspect ratio). Is set between the OSD clock generator 21a and the first and second setters 31 and 32 so that the first setter is set according to a control signal of the controller 21. It is a connection switching unit for switching to 31 or the second setting unit 32.

In addition, reference numeral 34 denotes a mode state storage unit for storing the selected mode state, and the control unit 21 sets the connection switching unit 33 to the first setting unit according to the screen mode state selected through the remote control device 9. A switching connection is made to the 31 or the second setting unit 32.

Next, the operation of the device having the above configuration will be described with reference to the operation flowchart shown in FIG. 4.

First, when the television receiver is turned on (step ST1), the control unit 21 determines the mode state stored in the mode state storage unit 34 and according to the stored mode state according to the stored mode state The screen output to the screen mode is executed (ST2 step).

In step ST2, when the mode stored in the mode state storage unit 34 becomes the normal screen mode (step ST3), the control unit 21 sends a predetermined control signal to the connection switching unit 33 to set the first setting unit. 31 to be connected to the switching (ST4 step).

On the other hand, when the mode stored in the mode state storage unit 34 is the wide screen mode in step ST2, the control unit 21 sends a predetermined control signal to the connection switching unit 33 to the second setting unit 32 To the switching connection (ST5 step).

Subsequently, the control unit 21 separates the predetermined broadcast frequency signal tuned through the tuner 2 into the audio signal and the video signal through the P / S separation unit 4, and outputs the audio signal through the speaker. Through the reproduction of the conventional broadcast signal to output the video signal (ST6 step).

On the other hand, if a viewer inputs a key due to the reason why the viewer operates the remote controller 9 while the broadcast signal is being output in the normal screen mode or the wide screen mode as described above (step ST7), the controller ( 21, it is determined whether the input key input is a key input of the screen mode switching key 9a (step ST8). When the key input is a key input of the screen mode switching key 9a provided in the remote control apparatus 9, The mode state previously stored in the mode state storage unit 34 is cleared, the newly selected screen mode is reset, and the process returns to the step ST2 (step ST9).

However, if the key input input through the remote control device 9 is not a key input of the screen mode switching key 9a but a key input related to general function execution, the controller 21 controls the OSD pattern data corresponding to the key input. Is controlled to be output (ST10 step).

Therefore, the OSD pattern data is applied to the mixer 7 and the mixer 7 is set to output an RGB signal applied from the image processor 6, and when the OSD blanking signal Y 'is inputted, the image is input. The input of the RGB signal applied from the processor 6 is stopped. Therefore, the RGB signal applied from the control unit 21 is applied to the CRT through the CRT driving unit 8, thereby outputting an OSD display of a predetermined size on the CRT.

That is, in the above embodiment, the OSD guide caption displaying the operation state is output as the OSD guide caption of a predetermined size regardless of the change in the screen size even when the screen is switched from the normal screen mode state to the wide screen mode state.

In addition, this invention is not limited to the said Example, It can variously deform and implement within the range which does not deviate from the technical summary of this invention.

As described above, according to the present invention, it is possible to realize a television receiver in which an OSD guide caption displaying an operation state is output at a constant size even when the screen size mode is changed.

Claims (1)

RGB signal and OSD blanking signal for visually displaying on the CRT the remote control device 9 for selecting the normal screen mode or the wide screen mode, and the operation state of the remote control device 9 or the operation state of the television receiver. A television receiver having an OSD clock generator 21a for outputting Y '); A first setting unit for setting an OSD clock signal in a normal screen mode state, a second setting unit for generating an OSD clock signal in a wide screen mode state, the OSD clock generating unit 21a and first and second settings A connection switching unit 33 installed between the units 31 and 32 and switched to the first setting unit 31 or the second setting unit 32 according to a predetermined control signal, and the remote control device 9. And a control unit 21 for controlling the connection switching unit 33 according to the selected screen mode state to switch to the first setting unit 31 or the second setting unit 32. Television receiver having a constant size OSD output function when switching.