JPH0974531A - Audio and video device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the switching of display of images even when the sound is replaced. SOLUTION: The signal received from a 1st tuner 1 and the signal received from an external terminal (AUX) 41 are selected by a changeover switch 42. At the same time, the signal received from a 2nd tuner 2, a character signal and the signal received from the AUX 41 are selected by the changeover switches 43 and 44. The video signals which are selected by the switches 42 and 44 are taken out at the output terminals 45a and 45b, and the voice signals which are selected by both switches 42 and 44 are supplied to a switch 46. Then two audio signals are taken out at two output terminals directly or after the mutual switching of them or the voice signals received from the switch 42 are taken out at two output terminals in common to each other. One of both audio signals received from the switch 46 is taken out at an output terminal 48a via a switch 47 with the other audio signal taken out at an output terminal 48b respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audiovisual apparatus having a display screen with a wide aspect ratio of, for example, 16: 9.

[0002]

2. Description of the Related Art In an audio / video apparatus, for example, a first and a second television tuner are built in, and video signals of channels (programs) received by these tuners can be combined and displayed. Has been done.

In such a case, for example, in a conventional audio / video apparatus having a display screen with a standard aspect ratio of 4: 3, the video signal of the channel received by the first tuner is displayed on the entire display screen (parent screen). The video signal of the channel received by the second tuner is partially reduced and displayed (sub-screen).

Therefore, in such a device, the audio signals of the channels received by the first and second television tuners described above emit the audio signals received by the first tuner from the speaker, and the second audio signal is emitted from the speaker. The audio signal of the channel received by the tuner was taken out to the headphone terminal.

That is, as described above, when the two video signals are displayed on the parent and child two screens, the relationship between the channel mainly viewed and the subordinately viewed channel is clear. is there. Therefore, as described above, the audio signal of the channel displayed on the main screen is emitted from the speaker, and the audio signal of the channel displayed on the sub screen is taken out to the headphone terminal.

On the other hand, in an audiovisual apparatus having a so-called wide aspect display screen of 16: 9, for example,
The display screen is divided into left and right, and the video signals received by the first and second tuners are displayed on the display screen in equal proportion.

However, even in that case, in the conventional device, for example, the video signal received by the first tuner is displayed on the right side of the display screen, and the audio signal is emitted from the speaker and received by the second tuner. The video signal is displayed on the left side of the display screen, and the audio signal is output to the headphone terminal.

Therefore, for example, when the audio signal output from the speaker and the audio signal output to the headphone terminal are exchanged, in the conventional device, the channels received by the first and second tuners are used. That is, the video signals displayed on the left and right on the display screen are also exchanged.

For this reason, when such viewing is performed, the display of the video signal is also replaced every time the audio signals are replaced, and such replacement of the display feels extremely annoying in general viewing. I was afraid that I would be cut off.

[0010]

This application has been made in view of the above-mentioned problems, and the problem to be solved is that in the conventional device, the video signal is changed every time the audio signal is replaced. The display is also changed, and such a change of display may be extremely annoying in general viewing.

[0011]

Therefore, in the present invention, means for taking out the audio signals of the first and second channels to the speaker and the headphone terminal, respectively, and for arbitrarily exchanging these taken out audio signals are provided. According to this, it is possible to prevent the display of the video signal from being switched even if the audio signals are switched.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION That is, in the present invention, the first
And an audiovisual device capable of combining and displaying the video signals of the second program into one and outputting the audio signals of the first and second programs to a speaker and a headphone terminal, respectively. A means for arbitrarily replacing the audio signals of the first and second programs taken out to the speaker and the headphone terminal is provided.

The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an example of a television receiver to which an audiovisual apparatus according to the present invention is applied.

In FIG. 1, a first tuner 1 and a second tuner 2 are provided. The signals received by the antenna 3 are supplied to these tuners 1 and 2, and the first and second channels are respectively received according to control signals described later. The video signal (V) and the audio signal (A) of each channel received by the tuners 1 and 2 are supplied to the switch means 4.

In the switch means 4, the changeover switch 42 selects the signal from the first tuner 1 and the signal from the external terminal (AUX) 41. A signal from the second tuner 2 and a character signal to be described later are selected by the changeover switch 43, and the selected signal and a signal from the external terminal (AUX) 41 are selected by the changeover switch 44. And these changeover switches 4
The video signal selected by 2, 44 is output terminal 45 (a,
b).

The audio signal selected by the changeover switches 42 and 44 is further supplied to the switch 46. In the switch 46, two audio signals are taken out as they are, or after being interchanged with each other, to be taken out to two outputs, or the audio signal from the changeover switch 42 is taken out to two outputs in common, according to control signals to be described later. Then, one audio signal from the switch 46 is taken out to the output terminal 48a through the switch 47, and the other audio signal is taken out to the output terminal 48b.

Further, the output terminal 45 of the switch means 4
The video signals extracted to (a, b) are the two-screen processing circuit 5
Is supplied to. As a result, in the two-screen processing circuit 5, two video signals are combined in accordance with the designation of various screen modes described later, and a combined two-screen video signal is formed. Then, the formed video signal is mixed with the mixing circuit (M
IX) 6 to the display tube (CRT) 7.

The audio signal output to the output terminal 48a of the switch means 4 is supplied to the speaker 9 through the audio processing circuit 8 for adjusting the volume. Further, the audio signal output to the output terminal 48b of the switch means 4 is
It is taken out to the headphone terminal 11 through the audio processing circuit 10 for adjusting the volume, and is supplied to the headphone 12 through this terminal 11.

Further, the video signal output to the output terminal 45a of the switch means 4 and the video signal from the second tuner 2 are selected by the switch 13 and supplied to the character demodulation circuit 14. The video signal demodulated by the character demodulation circuit 14 is supplied to the mixing circuit 6 through the switch 15, and the video signal and the audio signal demodulated by the character demodulation circuit 14 are supplied to the changeover switch 43.

In this apparatus, a control microcomputer (μ-com) 16 is provided. Control signals from an arbitrary keyboard 17 and a remote control receiver 18 are supplied to the microcomputer 16, and each part is controlled in accordance with these signals. Further, control setting information and the like by the microcomputer 16 are stored in the non-volatile memory 19.

A signal from the microcomputer 16 is supplied to the first tuner 1 to set a desired channel. Further, the character demodulation circuit 14 described above is also composed of a microcomputer. Then, the signal from the character demodulation circuit 14 is supplied to the second tuner 2 to set a desired channel. The character demodulation circuit 14 is controlled by the microcomputer 16.

Further, the video signal formed by the microcomputer 16 is supplied to the switch 15. Further, a signal indicating that the headphones 12 are connected to the above-mentioned headphone terminal 11 is supplied to the microcomputer 16. And the microcomputer 16 according to this signal
ON / OFF of the above-mentioned switch 47 is controlled by a signal from.

Therefore, in the case of displaying, for example, two screens in this apparatus, the following operation is performed using, for example, remote control. That is, FIG. 2 shows a remote controlled transmitter. In FIG. 2, A indicates an operation unit that normally appears on the surface of the apparatus, and B indicates, for example, an operation unit hidden under the lid.

When the menu key 21 is operated in the operation section shown in FIG. 2B, the menu mode is activated by the microcomputer 16, for example. As a result, the microcomputer 16 forms a video signal as shown in FIG. 3A, for example, and the video signal is supplied to the mixing circuit 6 through the switch 15 and is superimposed on the video signal from the dual screen processing circuit 5 for display. Tube (CRT) 7
Is displayed in.

That is, in FIG. 3A, "menu end""image quality / sound quality""twoscreens""text""screenmode"
A menu such as "Timer" is displayed. Further, in the state of this screen, "+" is displayed in the operation section shown in B of FIG.
When the "-" selection key 22 is operated, the menu is selected. Then, for example, when the enter key 23 is operated with "two screens" selected, the display is changed as shown in B of FIG.

Further, in FIG. 3B, "two screens return""twoscreens:""inputswitching""child screen position:"
A menu such as “dual-screen audio:” and “headphone volume:” is displayed. Headphones are represented by symbols as shown. When, for example, “two screens” is selected and the enter key 23 is operated in this screen state, for example, the display of each screen mode of “full”, “twin 1”, “twin 2”, “parent and child”, and “normal” is displayed. "Two screens" are displayed sequentially to the right of ":".

As a result, the display screen is, for example, A in FIG.
As shown in ~ E, one video signal is displayed on the entire surface like "A" in "Full", two video signals are displayed left and right like "B" in "Twin1", and one video signal is displayed in "Twin2". The two video signals are displayed on the left and right while maintaining the aspect ratio of 4: 3, and in the "parent and child", one of the two video signals is displayed on the entire surface and the other is reduced as in D, and "normal" is displayed.
Then, like E, one video signal is displayed while maintaining the aspect ratio of 4: 3.

When the enter key 23 is operated with the "dual screen audio" selected on the screen of FIG. 3B,
“On” is displayed on the right side of the “:” in the “dual screen audio” display, or the displayed “on” is deleted. Then, in the state where the "dual screen sound: ON" is displayed, the headphone volume can be set by the above-mentioned "+" and "-" selection keys 22. Further, the set volume is displayed as a graph on the right side of the display ":" of "headphone volume".

That is, by each of the above operations, the video signal formed by the microcomputer 16 as described above is supplied to the display tube (CRT) 7 through the switch 15 and displayed. At the same time, for example, a control signal corresponding to the screen mode displayed on the right side of the display ":" of "two screens" is supplied from the microcomputer 16 to the two-screen processing circuit 5, and two control signals corresponding to the designation of the screen mode are displayed. Video signal synthesis is performed.

Further, when the "+" and "-" selection keys 22 are operated in the state where the above-mentioned "dual screen voice input" is determined, a control signal from the microcomputer 16 is supplied to the voice processing circuit 10. Then, the volume of the audio signal supplied to the headphones 12 is adjusted. At this time, for example, a graph as shown in C of FIG. 3 is displayed in a superimposed manner on the display tube 7 according to the adjusted volume.

On the other hand, when the "+" and "-" volume keys 24 in the operation section shown in FIG. 2A are operated, the control signal from the microcomputer 16 is sent to the voice processing circuit 8. The volume of the audio signal supplied to the speaker 9 is adjusted and the like. Further, at this time, in the graph shown in C of FIG. 3 described above, the headphone symbol is removed and displayed on the display tube 7 in a superimposed manner according to the adjusted sound volume.

That is, in the flow chart of FIG.
In step [1], the on / off of the two-screen audio is set. Next, in step [2], it is determined whether the two-screen audio is off. When it is turned off (Y), the switch 46 of the switch means 4 is controlled in step [3], and the audio signal from the switch 42 is taken out commonly to the two outputs. Further, in step [4], the headphone 1 is connected to the headphone terminal 11 described above.
It is determined whether or not No. 2 is connected, and if it is not connected, the process is ended as it is.

When the headphones 12 are connected in step [4], the switch 47 is turned off and the speaker 9 is muted in step [5]. Further, in step [6], a value that follows the volume of the speaker 9 is set in the voice processing circuit 10, the volume of the headphones 12 is adjusted, and the process ends.

On the other hand, when the two-screen audio is not turned off in the above step [2] (N), the switch 46 of the switch means 4 is controlled in step [7] so that the two audio signals are two respectively. To be taken to the output. Then, in step [8], the preset volumes of the speaker 9 and the headphone 12 are set in the voice processing circuits 8 and 10, respectively, and these volumes are adjusted, respectively, and the process ends.

As a result, the audio signals of the first and second channels displayed on the two screens are supplied to the speaker 9 respectively.
The sound is output from the headphone terminal 11, and the volume of these is controlled independently.

Further, when the operation key 25 for "sound replacement" in the operation section shown in A of FIG. 2 is operated with the two-screen sound being turned on, a control signal from the microcomputer 16 is sent. Are supplied to the switch 46, and the audio signals extracted at the output terminals 48 (a, b) are exchanged.

Therefore, in this device, the audio signals of the first and second programs (channels) can be taken out to the speaker and the headphone terminal, respectively, and the taken out audio signals can be exchanged arbitrarily. Further, it is possible to independently adjust the volume and the like of these extracted audio signals.

As a result, the display of the video signal is also changed every time the audio signal is changed, and such a change of the display may be extremely troublesome in general viewing. According to the invention, it is possible to prevent the display of video signals from being switched even when the audio signals are switched, and it is possible to eliminate the annoyance thereof.

Further, when the "change screen" operation key 26 in the operation section shown in FIG. 2A is operated, for example, it is displayed on the left and right in the twin 1 and twin 2 screen modes described above. The video signals being displayed are exchanged. Alternatively, in the parent-child screen mode, the video signals displayed on the entire screen and in the reduced size are switched.

That is, in this case, the control signal supplied from the microcomputer 16 to the first tuner 1 is changed to the channel set in the second tuner 2 until then, and the microcomputer 16 is also changed.
Is supplied to the character demodulation circuit 14, and the control signal supplied from the character demodulation circuit 14 to the second tuner 2 is changed to the channel set in the first tuner 1 until then. The displayed video signals are exchanged.

As a result, for example, as shown in FIG. 6, when the two-screen audio is turned off, the audio signal of this screen is supplied to the headphones in the one-screen display as shown in A and B, or from the speaker. The sound is emitted. However, when a character screen is displayed as shown in C, the audio signal (monaural) of this character screen may be supplied to the headphones.

When the display of one screen shown in A and B is switched to the display of two screens, as shown in D and E, the audio signals of the screens on the right side are supplied to the headphones or emitted from the speaker. . When the screens are replaced from these states, the audio signal of the screen on the right side due to the screen replacement is supplied to the headphones or is emitted from the speaker as shown in F.

On the other hand, when the two-screen audio is turned on,
In the states shown in D and E above, as shown in G and H, the audio signal of the right screen is emitted from the speaker, and the audio signal of the left screen is supplied to the headphones. When the screen is changed from these states, the audio signal of the screen on the right side due to the screen change is emitted from the speaker as shown by I, and the audio signal of the screen on the left side is supplied to the headphones.

When the voices are exchanged from the states shown in G and H, the voice signals on the left side screen are emitted from the speaker and the voice signals on the right side screen are output to the headphones as shown in J and K, respectively. Supplied. When the screens are switched from these states, the audio signal of the screen on the left side due to the screen replacement is emitted from the speaker as shown by L, and the audio signal of the screen on the left side is supplied to the headphones.

Thus, according to the above-mentioned audio / video apparatus, in the apparatus capable of combining the video signals of the first and second programs into one and displaying them, the audio signals of the first and second programs are displayed. Displaying a video signal even if the audio signals are exchanged by providing a means for extracting the signals to the speaker and the headphone terminals, respectively, and arbitrarily replacing the audio signals of the first and second programs extracted to the speaker and the headphone terminals. Can be prevented from being replaced.

The audio / video apparatus according to the present invention is not limited to the structure shown in the above-mentioned embodiment, but can have various structures without departing from the spirit of the present invention.

[0047]

According to the present invention, the audio signals of the first and second programs (channels) can be taken out to the speaker and the headphone terminal, respectively, and the taken-out audio signals can be arbitrarily exchanged. It is now possible to independently adjust the volume and the like of the audio signal that is extracted.

As a result, the display of the video signal is also changed every time the audio signal is changed, and such a change of the display may be extremely troublesome in general viewing. According to the invention, it is possible to prevent the display of the video signal from being switched even when the audio signals are switched, and it is possible to eliminate the annoyance thereof.

Further, according to the present invention, it is possible to independently adjust the volume of the audio signals of the first and second programs taken out to the speaker and the headphone terminal.

Furthermore, while muting the audio signal extracted to the speaker when the headphone is connected to the headphone terminal, the audio signals of the first and second programs are independently extracted to the speaker and the headphone terminal, respectively. In this case, this muting can be prevented.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an example of an audio / video device to which the present invention is applied.

FIG. 2 is a configuration diagram of an example of the remote control transmitter.

FIG. 3 is a diagram for explaining the operation of the device according to the present invention.

FIG. 4 is a diagram for explaining the operation of the device according to the present invention.

FIG. 5 is a diagram for explaining the operation of the device according to the present invention.

FIG. 6 is a diagram for explaining the operation of the device according to the present invention.

[Explanation of symbols]

 1 First Tuner 2 Second Tuner 3 Antenna 4 Switch Means 41 External Terminals 42, 43, 44 Changeover Switch 4548 Output Terminal 46, 47 Switch 5 2 Screen Processing Circuit 6 Mixing Circuit (MIX) 7 Display Tube (CRT) 8 10 audio processing circuit 9 speaker 11 headphone terminal 12 headphone 13, 15 switch 14 character demodulation circuit 16 control microcomputer (μ-com) 17 keyboard 18 remote control receiver 19 non-volatile memory

Claims (3)

[Claims] 1. An audiovisual apparatus capable of combining and displaying the video signals of the first and second programs into one and displaying the audio signals of the first and second programs, respectively. An audio visual device comprising: means for taking out to a headphone terminal and optionally replacing the audio signals of the first and second programs taken out to the speaker and the headphone terminal. 2. The audiovisual apparatus according to claim 1, wherein volume adjusting means for the audio signals of the first and second programs taken out to the speaker and the headphone terminal are independently provided. Video equipment. 3. The audiovisual apparatus according to claim 1, further comprising means for muting an audio signal taken out by the speaker when headphones are connected to the headphone terminal, and the first and second programs. An audiovisual device comprising means for disabling the muting means when the audio signals of the above are independently taken out to the speaker and the headphone terminal, respectively.