JPH08331467A - Av monitor device and on-vehicle av monitor device - Google Patents

Abstract

PURPOSE: To visually confirm the output contents of another external device while recognizing which external device outputs its progressing state by confirming another image while listening to the sound of an image outputted at the time of operating. CONSTITUTION: When a map key is inputted to a remote control unit 4 and it is judged that the input comes from an input terminal provided at a first external input block 9, the output voice of a TV monitor part 3 is kept as it is but only the monitor picture is switched to the output image of a navigation system 11. Namely, the state of displaying a map picture or discharging a TV sound and the state of displaying a video picture or discharging a video sound are provided and returned to main flow. The image of the navigation system 11 can be watched while listening to the sound of a video camera 12 outputted at the time of operating the remote control unit 4 and the map picture, etc., as the output contents of the system 11 can be confirmed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an AV monitor device and an in-vehicle AV monitor device for outputting video and audio input from the outside.

[0002]

2. Description of the Related Art Conventionally, a device of this type is, for example, a V
There is a television receiver provided with a plurality of external input terminals for connecting an external device which is a video device such as a TR or a laser disc player. Such a television receiver is generally provided with a switch for switching the external input. For example, when the VTR and the laser disc player are connected, by operating the switch,
Either output image can be displayed on the screen.

[0003]

However, in such a conventional AV monitor device, when the external input is switched, the sound is switched together with the image. Therefore, for example, it cannot be used to check the output image of the laser disk player while listening to the output sound of the VTR.

The present invention has been made in view of such conventional problems, and in a state where a plurality of external devices are connected, the output voice of any one of the external devices can be heard while the other external devices are listening. It is an object of the present invention to provide an AV monitor device and an in-vehicle AV monitor device capable of confirming output video.

[0005]

In order to solve the above problems, according to the present invention, a plurality of connecting means for connecting an external device are provided and a video signal and an audio signal sent from the external device are output. The AV monitor device is provided with a switching unit that switches a video signal of one of the external devices to a video signal of another external device while maintaining the output state of the audio signal of the external device according to an operation. .

[0006] Further, mainly, a vehicle-mounted AV monitor which is provided with a plurality of connecting means for connecting the navigation device and other external devices, and which outputs video signals and audio signals sent from the navigation device and the other external devices. The device is provided with a switching means for switching the video signal of the other external device to the video signal of the navigation device according to an operation while maintaining the output state of the audio signal of the other external device. .

[0007]

In the above structure, the switching means switches the video signal of one of the external devices to the video signal of another external device while maintaining the output state of the audio signal of the external device in accordance with the operation. , You can check other images while listening to the sound output during operation. Also,
The switching unit maintains the output state of the video signal of the other external device and the audio signal of the other external device according to the operation,
For switching to the video signal of the navigation device,
It is possible to check the image of the navigation device while listening to the sound output during the operation.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a vehicle-mounted AV monitor device 1 according to the present invention.
FIG. 1 is a block diagram showing the vehicle-mounted AV monitor device 1 provided in the vehicle interior, which includes a TV tuner unit 2 and a TV monitor unit 3. The TV monitor unit 3 is
It has a monitor and a speaker (not shown), and a receiver 3a for receiving a switch signal transmitted from an attached remote control unit 4. As shown in FIG. 2, the remote control unit 4 has a map screen key 4a, a TV key 4b, a VIDEO key 4c, N for directly selecting a video source displayed on the monitor of the TV monitor unit 3.
An AVI key 4d is provided.

The TV tuner unit 2 has a TV tuner block 5 for receiving a television broadcast and a DTS (Digital Tunig Systm) microcomputer 6 for controlling the tuning operation of the TV tuner block 5. The TV tuner block 5 is connected to the TV monitor unit 3 via an input switching block 7 and a video / audio signal output block 8, and the input switching block 7 further includes a first external input block 9 and a second external input block 9. The external input block 10 is connected. Although not shown, each of the external input blocks 9 and 10 is provided with an external input terminal which is a connecting means of the present invention, and another external device, that is, the first external input block is connected via the external input terminal. A navigation device 11 is connected to 9 and a video camera 12 is connected to the second external input block 10.

The navigation device 12 is a general one having a GPS antenna, a drive unit for reading map data from a CD-ROM, and the like, like a general navigation device. Further, the first external input block 10 is provided on the premise that a navigation device having a structure capable of outputting a video signal and an audio signal to the outside is connected in advance.
A navigation device is connected to the first external input block 10 to detect whether or not a video signal is output, and the detection signal is output to the DTS microcomputer 6 via the input switching block 7. A determination switch is provided.

On the other hand, the DTS microcomputer 6 controls the operation of the vehicle-mounted AV monitor device 1 in accordance with the program stored in the ROM therein, and the switch signal received by the TV monitor unit 3 and the above-mentioned discrimination signal. The input switching block 7 is controlled based on the detection signal of the switch, etc.
The signal sent to the monitor unit 3 is switched. That is, DT
The switching means of the present invention is realized by the S-microcomputer 6 and the input switching block 7. In addition, DTS microcomputer 6
Also realizes the output state control means of the present invention.
The S-microcomputer 6 is connected to a vehicle speed sensor (not shown) which is provided on the vehicle body and which outputs a vehicle speed signal when the vehicle is traveling, which constitutes a traveling signal output means of the present invention.

Next, the operation of this embodiment having the above configuration will be described with reference to the flowcharts of FIGS. 3 and 4 showing the processing contents of the DTS microcomputer 6. That is, the DTS microcomputer 6 operates according to a main flow (not shown) and performs a process of fetching the key input information in the remote control unit 4 at regular intervals. Then, when there is a key input to the remote control unit 4 while nothing is displayed on the TV monitor unit 3, the screen display processing shown in FIG. 3 is executed. In the screen display process, it is first determined whether the input key is the NAVI key 4d (SA
1) If the judgment result is YES, the input switching block 7
To output the output signal of the navigation device 11 to the TV monitor unit 3 so that the monitor screen of the TV monitor unit 3 becomes a map screen and guide sound is emitted (SA
2). That is, the state shown in FIG. After that, the main flow returns. Incidentally, the above-mentioned step SA1
In the processing of 1, the detection signal is not sent from the discrimination switch of the first external input block 9, and the navigation device 1
1 is not connected to the first external input block 9,
Or, if it is determined that the power is not turned on even if it is connected, the entered key is the VANI key 4d.
Treat as if it was not.

If the determination result in step SA1 is NO, the entered key is the TV key 4b or VID.
It is determined whether the EO key 4c has been pressed (SA3). Then, if the determination result is NO, that is, if the input key is the NAVI key 4b, step S
Return to A1. On the contrary, if the input key is the TV key 4b or the VIDEO key 4c (YES in SA3
S) Then, it is determined whether or not the vehicle is traveling based on the output signal of the vehicle speed sensor (not shown) (SA4).
Then, when it is determined that the vehicle is not traveling (NO), the input switching block 7 is controlled according to the input key,
A signal corresponding to the key is sent to the TV monitor unit 3. That is T
In the case of the V key 4b, the output signal of the TV tuner block 5 is sent to the TV monitor unit 3, and the monitor screen of the TV monitor unit 3 becomes the TV screen and TV sound is emitted as shown in FIG. 5B. Sound. In the case of the VIDEO key 4c, the output signal of the video camera 12 is sent to the TV.
It is sent to the monitor unit 3, and the monitor screen of the TV monitor unit 3 is changed to a video screen as shown in FIG. 5 (C), and video sound is emitted (SA5). After that, the main flow returns.

On the other hand, when it is determined in step SA4 that the vehicle is traveling (YES), the process returns to step SA1. At this time, as shown in FIG.
The screen of the V monitor unit 3 is used as a screen for safety measures when the vehicle is traveling. That is, while the vehicle is in a traveling state, that is, while the vehicle speed signal is output from the vehicle speed sensor, the image transmitted from the TV tuner unit 5 or the video camera 12 is displayed as T
Display on the monitor screen of the V monitor unit 3 is prohibited. This ensures safety during driving. It should be noted that such processing is performed after the TV monitor unit 3 is set to output the image and sound sent from the TV tuner unit 5 or the video camera 12 as described above when the vehicle is stopped. It is also performed by the DTS microcomputer 6 even when is changed from the stopped state to the running state.

Further, the DTC microcomputer 6 executes the screen switching process shown in FIG. 4 when the remote control unit 4 receives a key input while the TV monitor unit 3 is in the output state as described above. That is, it is determined whether or not the input key is the map key 4a (SB1), and if the result of the determination is YES, then the first external input block 9
It is determined whether or not there is an input from the external input terminal included in, that is, whether or not the detection signal is sent from the determination switch (SB2). Then, if the determination result is YES, the output sound of the TV monitor unit 3 at that time is not changed and only the monitor screen is switched to the output image (map screen) of the navigation device 11 (SB3).

That is, the state where the TV screen is displayed on the TV monitor unit 3 and the TV sound is emitted is the state where the map screen is displayed and the TV sound is emitted (state E in FIG. 5). Further, the state in which the video screen is displayed and the video sound is emitted is the state in which the map screen is displayed and the video sound is emitted (state F in FIG. 5). Then return to the main flow. If the result of the determination in step SB1 and step SB2 is NO, the process returns to the main flow without doing anything. In step SB3 described above, as shown in FIG. 5 (D), a screen for safety measures when the vehicle is traveling is displayed, and when there is no voice, the map screen is displayed and the preset condition is set. Based on the above, either TV sound or video sound is selectively emitted (state G in FIG. 5). Accordingly, even if the display of the image sent from the TV tuner unit 5 or the video camera 12 on the monitor screen of the TV monitor unit 3 is prohibited, the map screen sent from the navigation device 11 is displayed. In addition, at that time, the sound transmitted from the TV tuner block 5 or the video camera 12 can be heard.

As described above, in the vehicle-mounted AV monitor device 1 of this embodiment, while listening to the sound of the video camera 12 output when the remote control unit 4 is operated,
The image of the navigation device 11 can be seen. Therefore, the output content of the navigation device 11, that is, the map screen or the like can be confirmed. Therefore, as compared with the conventional AV monitor, the usability when the navigation device is connected and used is improved. In the present embodiment, the in-vehicle A to which the navigation device 11 is connected
Although only the V monitor device 1 has been described, the present invention can be applied to an AV monitor device to which no navigation device is connected and which is not mounted on a vehicle. In that case,
Since it is possible to check the output state of one of the external devices by hearing while checking the output contents of the other external device, the range of use can be expanded compared to the conventional AV monitor device.

Further, in this embodiment, as described above, when the vehicle is stopped, the TV monitor unit 3 is
As described above, the TV tuner unit 5 or the video camera 1
When the vehicle is changed from the stopped state to the running state after the image and the sound sent from 2 are output, the screen of the TV monitor unit 3 is displayed as shown in FIG. I explained about the screen for safety measures,
When the vehicle changes from the stopped state to the running state, it is detected by the vehicle speed signal sent from the vehicle speed sensor, and then the screen of the TV monitor unit 3 is automatically switched to the image sent from the navigation device. Good. In that case, it is possible to alleviate the discomfort that the image is carelessly disappeared from the monitor screen of the TV monitor unit 3.

In this embodiment, the TV monitor block 5 is provided in the AV monitor device 1 so that the video signal and the audio signal other than those sent from the external device can be output. It may output only the video signal and the audio signal sent from the external device.

[0020]

As described above, in the AV monitor device of the present invention, it is possible to confirm other images while listening to the sound of the images output during operation. It is possible to visually confirm the output content of another external device while hearing the output status of any one of the external devices. Therefore, conventional AV
It can be used in a wider range than monitors.

Further, in the vehicle-mounted AV monitor device of the present invention, since the image of the navigation device can be confirmed while listening to the sound output during the operation, the image source of the external device can be confirmed. It is possible to confirm the contents of the image of the navigation device, for example, the map screen, while hearing the progress state. Therefore, the conventional A
Compared with the V monitor device, the usability when used in combination with the navigation device is improved. Further, the vehicle is provided with a traveling signal output means for outputting a signal as the vehicle travels, and an output state control means for inhibiting the output of the video signal of another external device while the traveling signal output means outputs the signal. The thing can ensure the safety at the time of running. Further, in the case where the switching means switches the video signal of the other external device to the video signal of the navigation device in response to the output of the signal by the traveling signal output means, the image is inadvertently displayed when the vehicle starts traveling. It is possible to relieve the discomfort of disappearing.

[Brief description of drawings]

FIG. 1 is a block diagram of an in-vehicle AV monitor device showing an embodiment of the present invention.

FIG. 2 is an enlarged view of the remote control unit shown in FIG.

FIG. 3 is a flowchart showing a screen display processing operation of the DTS microcomputer according to the embodiment of the present invention.

FIG. 4 is a flowchart showing a screen switching processing operation of the DTS microcomputer in the embodiment.

FIG. 5 is a diagram showing an output state in the TV monitor unit of the embodiment.

[Explanation of symbols]

 1 In-vehicle AV monitor device 5 Monitor unit 6 DTS microcomputer 7 Input switching block 11 Navigation device 12 Video camera

Claims (4)

[Claims] 1. An AV monitor device comprising a plurality of connecting means for connecting an external device and outputting a video signal and an audio signal sent from the external device, in accordance with an operation, a video signal of any one of the external devices. An AV monitor device comprising a switching means for switching to a video signal of another external device while maintaining the output state of the audio signal of the external device. 2. An in-vehicle AV monitor device comprising a plurality of connecting means for connecting a navigation device and another external device, and outputting a video signal and an audio signal sent from the navigation device and the other external device. According to an operation, switching means is provided for switching the video signal of the other external device to the video signal of the navigation device while maintaining the output state of the audio signal of the other external device. In-vehicle AV monitor device. 3. The on-vehicle AV monitor device according to claim 2, wherein the traveling signal output means outputs a signal as the vehicle travels, and while the traveling signal output means outputs the signal, the other external device. An in-vehicle AV monitor device comprising: an output state control unit that prohibits output of a video signal from the device. 4. The switching device switches the video signal of the other external device to the video signal of the navigation device when the traveling signal output device outputs a signal. In-vehicle AV monitor device.