JP2000350219A - Television receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a television receiver capable of visualizing an actual output sound volume state by varying the display color of character information according to the current sound volume state when the character information is displayed on the screen. SOLUTION: A character multiplex signal generating circuit 201 generates a character multiplex video signal (b) to be displayed on the actual screen and a composition control signal (c) for putting the character multiplex video signal (b) together with a television video signal (a). Further, the character multiplex signal generating circuit 201 is constituted so as to generate the character multiplex video signal (b) of a display color corresponding to a sound level signal (e) outputted from a sound level signal generating circuit 202 and the composition control signal (c).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver capable of displaying translated subtitles of a foreign language program and subtitles for a hearing-impaired person.

[0002]

2. Description of the Related Art FIG. 6 is a block diagram showing an example of a conventional television receiver having a subtitle display function. In the figure, 111 is an input terminal of the demodulated composite video signal, 1
12 is a television image signal processing circuit for converting a television image into a television image signal a for reproducing television images. 113 extracts character multiplexed information multiplexed from the composite image signal and converts it into a character multiplexed image signal b. A character multiplexed signal receiving circuit 114 for generating a composite control signal c synchronized with the character multiplexed video signal b, and outputs the outputs a and b of the television video signal processing circuit 112 and the character multiplexed signal receiving circuit 113 by the composite control signal c. A synthesizing circuit 115 for synthesizing is a display device for displaying the synthesized video signal d from the synthesizing circuit 114.

Therefore, when a demodulated composite video signal is supplied to the input terminal 111, character multiplexed information is extracted from the video signal, and superimposed subtitles can be superimposed and displayed on the display screen of the display device 115.

[0004]

In the television receiver configured as described above, the characters superimposed and displayed on the screen are independent of the current volume output from the television receiver. , Was displayed in a fixed color.
In such a television receiver, the hearing impaired person using the subtitle display cannot know the volume state actually output, and is hard to notice that the volume is higher than necessary. was there.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. An object of the present invention is to change the display color of character information on a screen in accordance with the current volume state. Another object of the present invention is to provide a television receiver capable of visually recognizing a volume state actually output.

[0006]

According to a first aspect of the present invention, there is provided a television receiver having a function of extracting character multiplexed information from a video signal and superimposing and displaying superimposed subtitles on a display screen. , Character multiplex information extracting means for extracting character multiplex information from a video signal, audio level signal generating means for setting a volume output together with the video signal and generating an audio level signal corresponding to the volume, and character multiplex information. A character multiplexing video signal for displaying a subtitle superimposed in a display color corresponding to the audio level signal of the audio level signal generating means, and a character multiplexing for generating a synthesis control signal for synthesizing the character multiplexing video signal with the video signal. Signal generating means.

According to a second aspect of the present invention, the audio level signal generating means is constituted by a microcomputer.

According to a third aspect of the present invention, in the television receiver, the audio level signal generating means includes a comparing means for comparing the current sound volume state with a predetermined reference value, and generates an audio level signal based on the comparison result. It is like that.

According to a fourth aspect of the present invention, in the television receiver, the audio level signal generating means further includes a setting means for variably setting a reference value of the audio level, and the comparing means changes the current sound volume state to a preset audio level. The sound level signal is generated based on a comparison result with a reference value.

According to a fifth aspect of the present invention, in the television receiver, the audio level signal generating means generates one of two types of audio level signals in accordance with whether the set volume state is silence or sound. The display color of the subtitle supermarket is switched according to the level signal.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
An embodiment of the present invention will be described.

Embodiment 1 FIG. 1 is a block diagram showing a configuration of a television receiver according to Embodiment 1 of the present invention. In the figure, reference numeral 200 denotes a character multiplexed information extracting circuit as character multiplexed information extracting means, 201 denotes a character multiplexed signal generating circuit as a character multiplexed signal generating means, and 202 denotes an audio level signal generating circuit as an audio level signal generating means.
Composite video signal input terminal 111, TV video signal processing circuit 1
12, the synthesizing circuit 114 and the display device 115 are the same as those of the conventional device shown in FIG. Also, the character multiplexed information extraction circuit 20
0 and the character multiplexed signal generating circuit 201 correspond to the character multiplexed signal receiving circuit 113 of the conventional device.

A character multiplexed information extracting circuit 200 extracts character multiplexed information from a composite video signal including character information input from an input terminal 111, and generates an information signal such as character code data. The character multiplexed signal generating circuit 201 converts a character multiplexed video signal b displayed on an actual screen from an information signal such as character code data obtained from the character multiplexed information
Then, a synthesizing control signal c for synthesizing the character multiplexed video signal b with the television video signal a is generated. The character multiplexed signal generation circuit 201 is configured to generate a character multiplexed video signal b having a display color corresponding to the audio level signal e output from the audio level signal generation circuit 202 and a synthesis control signal c.

The audio level signal generation circuit 202 corresponds to the current volume setting from the audio circuit in the device (not shown), that is, the position information of the volume control volume, or the case where the volume control of the audio circuit is an electronic volume. It receives the volume setting data and generates an audio level signal e corresponding to the volume position information or the volume setting data.

Next, the character multiplexed signal generation circuit 201,
The audio level signal generation circuit 202 will be described in more detail.

FIG. 2 is a block diagram showing an example of the main components of the character multiplexed signal generating circuit 201 and the audio level signal generating circuit 202. In the figure, reference numeral 210 denotes a character code decoding circuit for extracting corresponding character font data to be used for display from character multiplex information, 211 a character font memory for display, and 212 a character multiplexed video signal based on the character font data. A character signal generating circuit 213 for generating a character multiplexed video signal of the first display color;
Is a display color generation circuit that generates a character multiplexed video signal of a second display color different from the first display color, 215 is a selection circuit that selects two display colors, and 216 is position information (or an audio circuit) of a volume control volume. If the volume control is an electronic volume control, an input circuit for inputting volume information as the corresponding volume setting data), and 217 is a comparison circuit for comparing the volume information input to the input circuit 216 with a predetermined set value. .

Next, the operation of the above-configured television receiver will be described. Input circuit 216, comparison circuit 217
In the audio level signal generation circuit 202, the comparison circuit 217 determines whether the currently set volume state is higher or lower than a predetermined reference value, and the result is used as the audio level signal e as a character multiplex signal generation circuit. Output to the selection circuit 215 of 201. The selection circuit 215 selects one of the first display color and the second display color according to the audio level signal e, and outputs the display color to the character signal generation circuit 212. For example, when the set volume state is larger than a predetermined reference value, a character multiplexed video signal b1 of the first display color is obtained,
If it is smaller than the reference value, a character multiplexed video signal b2 of the second display color is obtained.

As described above, in the first embodiment, the audio level signal generation circuit 202 includes the comparison circuit 217 for comparing the current volume state with a predetermined reference value, and based on the comparison result, Since the signal e is generated, the character multiplexed signal generation circuit 201 generates a character multiplexed video signal having a display color corresponding to the audio level signal e. Therefore, when the character information is displayed on the screen, the display color is changed according to the current volume state, and the viewer can visually recognize the volume state actually output.

Embodiment 2 FIG. 3 is a block diagram showing a configuration of a television receiver according to Embodiment 2 of the present invention. In the figure, reference numeral 220 denotes a microcomputer as sound level signal generating means. Here, the microcomputer 220 also performs volume setting for an audio circuit (not shown). Other components are the same as those of the first embodiment shown in FIG.

The microcomputer 220 according to the second embodiment sets the volume of the audio output from an audio circuit (not shown), determines whether the current volume is higher or lower than a predetermined reference value, and determines the result. The signal is output to the character multiplexed signal generation circuit 201 as an audio level signal e. The character multiplex signal generation circuit 201 according to the audio level signal e
It acts to change the display color of the character multiplexed video signal synthesized with the video signal.

FIG. 4 is a diagram showing an example of an audio level signal in the television receiver according to the second embodiment. FIG.
In the graph, the horizontal axis represents the sound volume set value set in the audio circuit, and the vertical axis represents the audio level signal e. As shown in this figure, in the second embodiment, the microcomputer 220, which is the audio level signal generation means, selects the first display color if the current volume setting value in the audio circuit is 0, that is, if there is no sound. A sound level signal e2 for selecting the second display color is generated if the sound state is any other sound state.

FIG. 5 is a diagram showing another example of the audio level signal in the television receiver according to the second embodiment. In FIG. 5, the horizontal axis represents the volume set value set for the audio circuit,
The vertical axis indicates the audio level signal e. As shown in this figure, a reference value for switching the display color is set in advance with respect to the volume setting value set in the audio circuit, and the audio level signal e is switched at the reference value. That is, if the volume setting value set for the current audio circuit is smaller than the reference value, the audio level signal e1 for selecting the first display color is generated, and if the volume equal to or higher than the reference value is output, the second level is output. Generates an audio level signal e2 for selecting the display color of.

As described above, in the second embodiment, the microcomputer 220 is used as an audio level signal generating means to compare the current sound volume state with a predetermined reference value, and based on the comparison result, the audio level is determined. Since the signal e is generated, the character multiplexed signal generation circuit 201 generates a character multiplexed video signal having a display color corresponding to the audio level signal e. Therefore, when displaying the text information on the screen, the display color is changed according to the current volume state,
The viewer can visually recognize the volume state actually output.

The microcomputer 220 determines whether or not the current volume setting is 0, and outputs the result to the character multiplexed signal generation circuit 201 as a voice level signal e. That is, it is easy to change the display color of characters only in the mute state.

Further, when the audio level signal generating means is constituted by the microcomputer 220, the reference value set in advance to switch the current volume state and the display color can be obtained only by changing the software of the microcomputer 220. Can be output to the character multiplexed signal generation circuit 201 as the audio level signal e.

Even in the circuit configuration of the first embodiment shown in FIG. 2, the comparison circuit 217 determines whether or not the current volume setting value input to the input circuit 216 is 0. Is also possible. In that case, the comparison circuit 217 has two states of determination results, that is, a case where the current volume setting value is 0 and a case where it is not, and outputs the result to the selection circuit 215 as a sound level signal. The selection circuit 215 switches between the display color 1 and the display color 2 according to the audio level signal, and changes the display color only when the volume setting is 0, that is, when the sound is muted.

Further, even when the audio level signal generation circuit has the circuit configuration shown in FIG. 2, the sound volume at the current sound volume adjustment volume position input to the input circuit 216 is smaller than the preset reference value. Comparison circuit
It can be determined at 217. The comparison circuit 217 has a determination result of two states, that is, a case where the current volume setting value is smaller than a reference value for switching a preset display color and a case where the current volume setting value is not so, and uses the result as an audio level signal in the selection circuit
Output to 215. The selection circuit 215 switches between the display color 1 and the display color 2 according to the audio level signal, and changes the display color only when the volume setting is larger than a preset reference value.

[0028]

Since the present invention is configured as described above, it has the following effects.

According to the first aspect of the present invention, in a television receiver having a function of extracting character multiplexing information from a video signal and superimposing subtitles on a display screen and displaying the same, character multiplexing is performed on the video signal. Character multiplexed information extracting means for extracting information, audio level signal generating means for setting a volume output together with the video signal and generating an audio level signal corresponding to the volume, and audio level signal generating means from the character multiplexed information A character multiplexed video signal for displaying a subtitle superimposed in a display color corresponding to the audio level signal of the video signal, and a character multiplexed signal generating means for generating a combination control signal for combining the character multiplexed video signal with the video signal. So, by changing the color of the text information on the screen according to the current volume, you can easily visually recognize the current audio output state, The amount can be prevented from becoming larger than necessary.

According to the second aspect of the present invention, since the audio level signal generating means is constituted by the microcomputer, the processing can be performed by the same microcomputer together with the volume control and the like. There is no need to add a circuit as a means, and the cost can be reduced.

According to a third aspect of the present invention, in the television receiver, the audio level signal generating means includes comparing means for comparing the current volume state with a predetermined reference value, and based on the comparison result, the audio level signal generating means. So that
By generating a character multiplexed video signal having a display color corresponding to the audio level signal in the character multiplexed signal generating means, the viewer can visually confirm the magnitude of the audio output.

Further, in the television receiver according to the fourth aspect, the audio level signal generating means further includes a setting means for variably setting a reference value of the audio level, and the current volume state is preset by the comparing means. Since the sound level signal is generated based on the comparison result with the sound level reference value, the viewer can adjust the change point of the display color, and the sound output may be out of the appropriate range. Can be visually confirmed immediately and easily.

Further, in the television receiver according to the fifth aspect, the sound level signal generating means generates one of two kinds of sound level signals according to whether the set volume state is silent or sound. Since the display color of the superimposed subtitles is switched in accordance with these audio level signals, the viewer can immediately and immediately confirm the presence or absence of audio output.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a television receiver according to Embodiment 1 of the present invention.

FIG. 2 is a block diagram illustrating an example of main components of a character multiplexed signal generation circuit and a voice level signal generation circuit.

FIG. 3 is a block diagram showing a configuration of a television receiver according to Embodiment 2 of the present invention.

FIG. 4 is a diagram illustrating an example of an audio level signal in the television receiver according to the second embodiment.

FIG. 5 is a diagram illustrating another example of the audio level signal in the television receiver according to the second embodiment.

FIG. 6 is a block diagram showing an example of a conventional television receiver having a subtitle display function.

[Explanation of symbols]

111 video signal input terminal, 112 TV video signal processing circuit, 113 character multiplexed signal receiving circuit, 114
Synthesis circuit, 115 display device, 117 synthesis control signal width expansion circuit, 200 character multiplexed information extraction circuit, 20
1 character multiplex signal generation circuit, 202 audio level signal generation circuit, 210 character code decoding circuit, 21
1 character font memory, 212 character signal generation circuit, 213 display color 1 generation circuit, 214 display color 2 generation circuit, 215 selection circuit, 216 input circuit, 2
17 Comparison circuit.

Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat II (Reference) H04N 7/035 9/74 F term (Reference) 5C025 AA29 BA28 CA02 CA09 CA18 CB10 5C026 DA05 DA19 5C057 AA06 BA02 EE07 FC12 FD06 GH03 GM03 GM04 5C063 AA02 AB01 AB05 AC01 AC05 AC10 CA20 DA03 DB02 EB37 EB43 EB49 5C066 AA03 BA02 CA21 ED04 GA22 GA34 JA09 KD04 KM11

Claims (5)

[Claims] 1. Extracting character multiplex information from a video signal,
In a television receiver having a function of superimposing and displaying superimposed subtitles on a display screen, a character multiplexed information extracting means for extracting character multiplexed information from the video signal, and setting a volume output together with the video signal, Audio level signal generating means for generating an audio level signal according to the volume; and a character multiplexed video signal for displaying a subtitle superimposed in a display color according to the audio level signal of the audio level signal generating means from the character multiplexed information. And a character multiplex signal generating means for generating a composite control signal for synthesizing a character multiplexed video signal with the video signal. 2. The television receiver according to claim 1, wherein said audio level signal generating means comprises a microcomputer. 3. The sound level signal generating means includes a comparing means for comparing a current sound volume state with a predetermined reference value,
3. The television receiver according to claim 1, wherein an audio level signal is generated based on a result of the comparison. 4. The sound level signal generating means further comprises setting means for variably setting a reference value of the sound level, wherein the comparing means compares the current sound volume state with a preset sound level reference value, 4. The television receiver according to claim 3, wherein an audio level signal is generated based on a result of the comparison. 5. The audio level signal generating means generates one of two types of audio level signals according to whether the set volume state is silent or non-speech, and generates the subtitle in accordance with these audio level signals. The television receiver according to claim 1, wherein a display color of a supermarket is switched.