JPS63310284A - On vehicle television device - Google Patents

Abstract

PURPOSE:To give no uneasy sense to a crewman even if a TV image is turned off suddenly, by informing to the crewman the information by which a fact that its picture is not outputted due to running is known, at the time of turning off an image of a TV broadcast by following up the running of a vehicle. CONSTITUTION:In case a running detecting means 503 does not detect running of a vehicle but a running signal is not outputted, a switching means 504 sends a sound signal and an image signal which have been received and demodulated, to a TV receiver 501. Therefore, the TV receiver 501 functions normally. When the vehicle runs and the running signal is outputted from the running detecting means 503, the switching means 504 cuts off at least the demodulated image signal, and sends a voice or image information for showing a fact that the TV cannot be used in the course of running, from an output means 502 connected to a VTR, etc. As a result, for instance, a voice or an image of 'a television is not reflected in the course of running' is outputted from the TV receiver 501.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to a vehicle-mounted television device that does not output images from a television receiver mounted on the vehicle while the vehicle is running.

B. Prior art A conventional example of this type of in-vehicle television device is, for example, the
One disclosed in Japanese Patent No. 7-166465 is known. In this conventional example, when the vehicle is in a running state, the image of the received television broadcast is suddenly turned off and only the audio is output, or the information is switched to other vehicle information and the audio is output as is.

Problems to be Solved by the C0 Invention Therefore, the occupants were inconsiderate because they did not know why the image disappeared or why the image was switched. In particular, there were times when the image suddenly disappeared, leading me to believe that the TV receiver was malfunctioning.

An object of the present invention is to provide an in-vehicle television device that solves the above-mentioned problems by informing the occupants of information that when erasing a television broadcast image as the vehicle is running, information indicating that both sides of the image will not be output because the vehicle is running. It is about providing.

Means for Solving the D0 Problem Explained with reference to FIG. 1, which is a diagram corresponding to claims, the in-vehicle television device according to the present invention includes an in-vehicle television receiver 501,
output means 502 for outputting information that the television cannot be used while the vehicle is running; running detection means 503 for outputting a running signal when the vehicle is running; and at least an image demodulated from the received broadcast wave when the running signal is output. The signal is blocked and the information from the output means 502 is transmitted to the in-vehicle television receiver 5.
01, and a switching means 504 that sends the demodulated image signal and audio signal to the in-vehicle television receiver 501 when no running signal is output, and is configured to output the information from the television receiver 501 while the vehicle is running. Ru.

When the 80 action running detection means 503 does not detect the running of the vehicle and no running signal is output, the switching means 504 sends the received and demodulated audio signal and image signal to the television receiver 501. Therefore, the TV functions normally. When the vehicle is running and a signal is output, the switching means 504 cuts off at least the demodulated image signal, and outputs an audio or image output from the output means 502 indicating that the television cannot be used while the vehicle is running. The information is sent to the television receiver 501.

As a result, the television receiver 501 outputs, for example, a sound or image saying, "While the vehicle is running, the television is not displayed."

F. Embodiment An embodiment of the present invention will be described based on FIGS. 2 to 4.

FIG. 2 shows the overall configuration of an example of the in-vehicle television device 100. This in-vehicle television system @100 includes a television receiver 50,
It has a vehicle speed sensor 51 that outputs a signal according to the vehicle speed, a system controller (hereinafter referred to as system controller) 52 that includes a microcomputer and controls image switching and the like, which will be described later, and a character generator 53. The television receiver 50 has a television tuner section 1, an FM tuner section 2), an AM tuner section 3, and each of these tuner sections 1, 2.3 is connected to a system controller 52 via a pass line. The system controller 52 outputs a band selection signal for selecting one of TV, FM, and AM bands in response to a signal from a band switching key (not shown). The system controller 52 also has a memory that stores frequency division ratio information as tuning information to be supplied to the local oscillation circuit of each tuner section 1, 2.3, and divides the frequency according to the operated tuning key. The ratio is read from this memory and
Tuning is performed within the band selected by the band selection signal. The system controller 52 also has a memory that stores tuning information that is preset in correspondence with the preset tuning keys.

A composite video signal output and main channel and sub channel audio signal outputs (when equipped with an audio multiplex decoder) are obtained from the TV tuner section 1.
From the M tuner section 2, left and right channel audio signal outputs are obtained, and from the AM tuner section 3, one channel audio signal output is obtained.

A video signal output from the television tuner section 1 is supplied to one input terminal of the switch circuit 4. The other input terminal of the switch circuit 4 is supplied with a video signal from, for example, a video output terminal of a VTR through an external video input terminal 5, and one of the inputs is selectively selected by the video input switching signal C8 from the system controller 52. can be switched to The composite video signal from the switch circuit 4 is supplied to the Y/C signal processing circuit 6 where it is converted into R, G, and B33 original signals, and the hue volume 7 adjusts the color tone.
Color adjustments are made using the color volume 8.

The three primary color signals from the signal processing circuit 6 are supplied to one input terminal of a switch circuit 10 via an amplifier 9. The other input terminal of this switch circuit 10 is connected to an external R, G
, B input terminal 11 from the outside, for example, three primary color signals indicating map information are supplied, and R, G from the system controller 52 are supplied.
, B input switching signal C82 selectively switches one of the inputs. As will be described later, when the vehicle is running, the R, G, B input switching signal C8z from the system controller 52 becomes high level and the input from the external R, G, B terminal 11 is selected, and when the vehicle is stopped, a predetermined switch operation 1, for example By operating the map information display switch, the R, G, B input switching signal C82 is set to high level, and the manual input from the external R, G, B terminal 11 is selected. Also, if this type of switch is not operated when the vehicle is stopped, the R,
The G, B input switching signal C82 maintains a low level, and the R, G, and B inputs from the amplifier 9 are switched and selected.

The three primary color signals from the switch circuit 10 are supplied to one input terminal of the switch circuit 12. The other input terminal is supplied with R, G, and B signals from the character generator 53, and the switching signal terminal is supplied with the character generator 5.
A switching signal Ys is supplied from 3. The character generator 53 outputs a character signal and a switching signal Ys in response to a control signal from the system controller 52. As mentioned later, when the vehicle is running, a character signal indicating "TV is not displayed while driving" is obtained, and when the vehicle is stopped,
By operating a predetermined switch, for example, a preset display switch, character signals indicating various character information can be obtained. By switching the switch circuit 12 pixel by pixel using the switching signal Ys, an image based on a character signal from the generator 53 can be superimposed on the signal from the switch circuit 10 on the screen. When there is no signal from the switch circuit 10, only the character image is displayed.

The three primary color signals from the switch circuit 12 are sent to the output image width circuit 1.
3 to the cathode of the cathode ray tube 14, and an image is displayed on the screen. A brightness control signal from the system controller 52 is supplied to the output amplification circuit 13 via the D/A converter 26.
The brightness of the image displayed on the screen is controlled.

On the other hand, TV tuner section 1, FM tuner section 2 and AM
The audio output from the tuner section 3 is connected to the switch circuit 1.
5. Further, an audio signal from, for example, an audio output terminal of a VTR is supplied to this switch circuit 15 through an external audio input terminal 16 . Then, the switch circuit 15 is switched in response to a switching control signal from the system controller 52 in accordance with reception band selection and external input switching. Two channels of audio signals are obtained from this switch circuit 15, and the audio signals of each channel are sent to front amplifiers 17FL and 17FR, respectively.
3 to front speakers 18FL and 18FR, and is supplied to rear speakers 18 RL and 18RR through rear amplifiers 17RL and 17RR.
Audio is played. Here, a voice control signal is sent from the system controller 52 to the front amplifiers 17FL and 17FR.
The signal is supplied via the converter 19 to control the reproduction volume of the Freon I-speakers 17FL and 17FR. Further, a volume 20 is provided for the rear amplifiers 17FL and 17RR, and by adjusting this volume, the reproduction volume of the rear speakers 18RL and 18RR is adjusted.

The front speakers 18FL and 18FR are installed in front of the driver or on the front door, and the rear speaker 1
-8RL and 18RR are attached to the rear.

In addition, 10B is, for example, a 12V car battery, IF source, 2
1TV, 21FM, and 21AM are power control switch circuits that are switched by a switching signal supplied from the system controller 52 when switching the reception band, and 21AP is a power supply control switch circuit that connects the power to the audio amplifier 17FL.

This switch circuit 21AP is a switch circuit that supplies signals to 17FR, 17RL, and 17RR, and is turned on by a switching signal from the system controller 52 when the system power key (not shown) is turned on.

Furthermore, since this channel selection system is for use on a car stand, diversity reception is provided.

That is, 22A, 22B, 22C, and 22D are receiving antennas (a), and the output of the antenna 22A is supplied to the antenna selector 24 via the distributor 23, and the output of the antennas 22B, 22G, and 22D is supplied to the antenna selector 24. is supplied to

The antenna selector 24 selects an antenna based on a control signal from the system controller 52. The output of this antenna selector 24 is sent to the TV tuner section 1 by a distributor 25.
and the FM tuner section 2. In addition, the distributor 23
The output of the antenna 22A distributed by the antenna 22A is supplied to the AM tuner section 3.

A vehicle speed sensor 51 is connected to the system controller 52 and outputs a vehicle speed signal according to the vehicle speed. The system controller 52 detects the running of the vehicle based on a vehicle speed signal according to the processing procedure described later, and when the vehicle is running, R, which is input to the switch circuit 10,
The G, B input switching signal C82 is set to high level (running signal), and when the vehicle is stopped, the R, G, B input switching signal C82 is set to high level (driving signal).
is set to low level (vehicle stop signal). 40 is a control panel section.

In the configuration of the above embodiment, the character generator 53 constitutes the output means, the vehicle speed sensor 51 and the system controller 52 constitute the traveling detecting means, and the switch circuit 10.degree. 12 constitutes the switching means.

Next, according to the example of the processing procedure shown in FIG. 3, the operation when television is selected by the band switching key will be described.

In step Sll, it is determined whether or not the power switch of the television receiver 50 is on, and if the determination is negative, each step shown here is jumped and the routine proceeds to another routine. If affirmative, the process proceeds to step S12, and it is determined based on the signal from the vehicle speed sensor 51 whether the vehicle is running or stopped. If it is stopped, the process advances to step S15, and the R2O, B input switching signal C82 input to the switch circuit 10 is set to a low level.

As a result, the R, G, and B signals of the television broadcast waves received by the antennas 9A to 9D are input to the switch circuit 12 through the switch circuit 10. If no character signal is being output from the character generator 53, the image is output to the cathode ray tube 14 as shown in FIG. 4(,), for example. At this time, by operating the channel preset key or the like, the character generator 5 is
If a control signal is supplied to 3 and a character signal indicating preset information is output, a character image is superimposed on the television screen. On the other hand, if the vehicle is running, the process advances to step S13, and the R2O, B switching input signal C
Set 82 to high level.

The process further advances to step 314, in which the character generator 53 outputs the following information based on the control signal from the system controller 52.
For example, a character signal indicating text information such as "TV is not displayed while driving" is output. As a result, the R, G, and B signals of the television broadcast are blocked by the switch circuit 10, and only the character signal is supplied to the cathode ray tube 14 via the switch circuit 12. For example, as shown in FIG. , the text information "TV cannot be displayed" is output. At this time, the video of the television broadcast is not output, but the audio continues to be output. Audio output may also be stopped.

Note that, as shown in FIG. 4(c), even if the system controller 52 controls the character generator 53 using a channel selection signal from a channel selection key (not shown) to display the channel currently being received (for example, CH 12), good. Alternatively, as shown in FIG. 4(c), preset reception channels may be displayed in correspondence with the preset button display. Furthermore, AM and FM preset display may be similarly performed while the vehicle is running.

In addition, an audio changeover switch circuit is provided at the input terminal of the speaker together with the switch circuit 10 described above, and two-way power is provided for the audio signal of the TV broadcast wave and the synthesized audio signal from the audio synthesizer (not shown). The audio signal of the vehicle may be cut off once, and after the message "TV is not displayed because the vehicle is running" is output from the speaker using a synthesized audio signal, the audio signal of the television may be output again. In this case, the television broadcast video signal is cut off as described above. Furthermore, the message may be set to ``Television cannot be used while driving'' and the television receiver may be turned off after outputting this message.

Furthermore, if the vehicle frequently repeats running and stopping, such as during traffic jams, the TV screen will change each time, so it is preferable to set a predetermined delay time before switching the screen when the vehicle changes from running to stopping.

G0 Effects of the Invention According to the present invention, the image on the television broadcast wave is turned off when the vehicle is running, and information is output to notify that the image is turned off because the vehicle is running, not due to a malfunction of the TV. Even if the image suddenly disappears, the occupants will not feel uneasy.

[Brief explanation of the drawing]

FIG. 1 is a complaint correspondence diagram. 2 to 4 show one embodiment, FIG. 2 is a block diagram showing the overall configuration of the in-vehicle television device, FIG. 3 is a flowchart showing the processing procedure, and FIGS. 4(a) to (c) are diagrams showing the screens of cathode ray tubes, respectively, where (a) is when the vehicle is stopped;
(b) and (C) show when the vehicle is running. 10.12: Switch circuit 50: Television receiver 51: Vehicle speed sensor 52 System controller 53: Character generator 501: Television receiver 502: Output means 503: Running detection means 504: Switching means

Claims (1)

[Claims] 1) An in-vehicle TV receiver, an output means for outputting information that the television cannot be used while the vehicle is running, a running detection means for outputting a running signal when the vehicle is running, and a drive detecting unit for outputting the running signal. When a running signal is not output, at least the demodulated image signal is cut off from the received broadcast wave and the information from the output means is sent to the in-vehicle television receiver, and when a running signal is not output, the demodulated image signal and audio signal are transmitted to the in-vehicle television receiver. 1. A vehicle-mounted television device, comprising: switching means for transmitting the information to a television receiver, and configured to output the information from the television receiver while driving. 2) An in-vehicle television device according to claim 1, wherein the information is character information. 3) An in-vehicle television device according to claim 1, wherein the information is audio information.