JPH067296B2 - Vehicle image information provision system - Google Patents

Description

TECHNICAL FIELD The present invention relates to an in-vehicle image information providing system.

BACKGROUND ART In recent years, as an in-vehicle image information providing system, a navigation (NAVI) device has been developed that provides image information such as road map information to vehicle passengers as driving support information in order to make vehicle driving easier. It has been put to practical use.
According to this navigation device, for example, road map information is displayed on the screen of the display arranged in or near the instrument panel in front of the vehicle driver, so that the target position and the current position can be easily obtained while driving the vehicle. It is very convenient because you can check etc.

By the way, the navigation device can provide not only road map information, but also image information such as driving data, maintenance guides, various warnings, etc., and further, when a failure location is displayed on the maintenance guide, a repair method for the failure, etc. It is also possible to provide image information such as instruction manuals. Furthermore, when the map information is displayed on the screen, the map is mainly composed of road information, and additional information indicating the location of a gas station, a restaurant, a hotel, etc. is selectively additionally displayed on the road information. You can also

In order to be able to provide various kinds of image information as described above, it is necessary to store the data in the storage information, but a semiconductor storage device generally known as a storage device in the past. However, since the amount of data to be stored is very large, it is necessary to use a large number of storage devices, resulting in an increase in size and cost of the system.

On the other hand, recently, a car audio CD player capable of reproducing a so-called compact disk (CD), a so-called compact disk (CD) capable of reproducing high quality sound, which is called dream audio, has been developed and commercialized. Has been done. This CD is not only used as an audio disc, but also as a ROM (Read) for storing data such as image information.
It can also be used as an Only Memory (hereinafter referred to as CD-R)
OM). Since this CD-ROM has a very large storage capacity and a short access time, if it can be used as a storage device for an in-vehicle image providing system, it is considered to be very advantageous for downsizing and cost reduction of the system. To be

When a CD-ROM is used as a storage device of a vehicle-mounted image information providing system, it is desired to develop a system that can be used by properly combining the original MUSIC CD and the ROM CD.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and is MUSI.
It is an object of the present invention to provide an in-vehicle image information providing system that can be used by making both a C CD and a ROM CD compatible.

An on-vehicle image information providing system according to the present invention is a system for providing sound information via a sound output system and image information via a display output system for boarding a vehicle, which is recorded on a disk-shaped recording medium. A first disc reproducing device for reproducing the reproduced digital data; a navigation device for outputting image information carrying driving support information to the display output system based on the digital data output from the first disc reproducing device; A second disc reproducing apparatus for reproducing a digital audio signal recorded on a disc-shaped recording medium different from the disc-shaped recording medium and converting the obtained digital audio signal into an analog signal to output an analog audio signal; Control for collectively controlling the disk reproducing device, the navigation device, and the second disk reproducing device The control means transfers the digital data reproduced by the first disc reproducing device to the navigation device via a bus line, and the first disc reproducing device, the navigation device, and the second disc reproducing device. The control signal to and from the disc reproducing device is transferred via the bus line, and the analog audio signal output from the second disc reproducing device is directly supplied to the acoustic output system. The feature is that the first and second disk reproducing devices can be operated simultaneously.

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

FIG. 1 is a block diagram showing an embodiment of the present invention.
M / FM tuner 1, MUSIC CD player 2, C
D-ROM CD player 3 and navigation device 4
Are provided as output devices. Of these four sources, the navigation device 4 serves as an output device that provides image information that carries driving assistance information to the vehicle occupants, and the CD-ROM CD player 3 performs various operations in combination with the navigation device 4 to perform various operations. It is used as a dedicated player for reproducing a CD-ROM CD in which image information and the like are stored. That is, the navigation device 4
In addition, based on the output data of the player 3, the vehicle position information and the like are further fetched, and the driving assistance information desired by the vehicle occupant is created. The display 5 for displaying the image information is arranged, for example, on the instrument panel in front of the vehicle driver or in the vicinity thereof, and is controlled by the display controller 6. The audio amplifier 7 selects and amplifies the analog audio signal supplied from the AM / FM tuner 1 and the MUSIC CD player 2, and drives the speaker 8.

AM / FM tuner 1, MUSIC CD player 2,
The CD player 3 for CD-ROM, the navigation device 4, the display controller 6, and the audio amplifier 7 are controlled by the system controller 9 in response to the operation key input.
It is connected by and is configured to operate as a system as a whole. That is, the common bus line is used for collective control.

FIG. 2 shows a configuration example of the CD players 2 and 3. In the figure, information recorded on a disk 11 which is a disk-shaped recording medium is read by, for example, an optical pickup 12,
The read signal is amplified by the high frequency amplification circuit 13 and demodulated by the demodulation circuit 14. The demodulation output of the demodulation circuit 14 is output as digital data after being subjected to signal processing such as deinterleaving and error correction in the signal processing circuit 15.
For this signal processing, the memory 16 that temporarily stores demodulated data necessary for the processing is used.

The mechanical control system 17 controls the focus servo system, the tracking servo system and the like of the pickup 12 based on the demodulated output of the demodulation circuit 14 and the spindle motor 18 that rotationally drives the disk 11. A control circuit 19 for controlling the signal processing circuit 15 and the mechanical control system 17 is connected to the system bus line 10 and controlled by the system controller 9 in FIG.

The output of the signal processing circuit 15 is demodulated into digital data. In the MUSIC CD player 2, as shown by the broken line in FIG.
A / A (digital / analog) modulation circuit 20 is connected, and this D / A conversion circuit 20 demodulates it into an analog audio signal and supplies it to the audio amplifier 7 in FIG. On the other hand, in the CD player for CD-ROM 3, the output of the signal processing circuit 15 is directly used for various purposes as digital data of the ROM.

It should be noted that both the CD players 2 and 3 are configured such that loading and ejecting of the disc are all automatically performed.

Next, the operation of this system will be described.

In this system, the system controller 9 receives operation key input data from an operation unit (not shown),
The entire system is controlled via the bus line 10. AM
The / FM tuner 1, the MUSIC CD player 2, and the audio amplifier 7 constitute an audio system, and under the control of the system controller 9, the same operation as a normal device is performed.

The CD-ROM CD player 3 reproduces data such as image information recorded (stored) in the CD-ROM, and the reproduction output thereof is used as data for various operations. For example, it is used for various purposes as data for displaying, for example, road map information or car handling instruction information on the screen of the display 5 by a combined operation with the navigation device 4.

In the navigation device 4, it is preferable to always display the road map information on the screen of the display 5 while driving, but if you want to listen to music in parallel, MUSI
It is necessary to simultaneously operate the C CD player 2 and the CD-ROM CD player 3. In this system, MU
The CD players 2 and 3 for separately reproducing the SIC CD and the CD-ROM CD are separately provided, and the MUS
Since the IC CD player 2 has a built-in demodulation device (D / A conversion circuit 20) for converting digital data into an analog signal, both CD players can operate independently.
Even when the D-ROM is being used, music by playing the MUSIC CD can be opened in parallel.

By the way, MUSIC CD player 2 and CD-ROM
Since the structure is completely the same as that of the CD player 3 for use, when both CD players 2 and 3 are arranged side by side, for example, there is a possibility that a disc of a different reproduction type is erroneously loaded into each player. is there. In such cases,
The original system operation cannot be performed.

In order to prevent such problems, this system
When a wrong disc is loaded, this is detected and the disc is automatically ejected. The operation at this time will be described with reference to the flowcharts of FIGS. 3 and 4.

FIG. 3 is a flowchart in the case of the MUSIC CD player 2. First, when a disc is set (step 1), the CD player 2 once starts playing the disc (step 2). At this time, the control circuit 19 takes in the output of the signal processing circuit 15, checks the Q channel in the user's bit in the subcode, and determines whether or not the set disc is a MUSIC CD (step). 3). When it is determined that the disc is not a MUSIC CD, the control circuit 19 controls to eject the disc (step 4), and further issues a warning to that effect via the display controller 6 to the display 5
A message indicating that the disc has been set by mistake is displayed on the screen (step 5). If it is determined in step 3 that the disc is properly set, the process proceeds to step 6 to reproduce the MUSIC disc.

FIG. 4 is a flow chart in the case of the CD player 3 for the CD-ROM, but the operation is exactly the same as that of the CD player 2 for the MUSIC, and the disc type is checked by checking the Q channel in the user's bit. It is done by doing.

It should be noted that although a warning regarding incorrect loading of a disc is not always necessary, it is preferable to give a warning when the driver is operating the system, and instead of the display on the screen of the disc play 5, each CD is displayed. The player may be provided with an indicator for warning of erroneous loading, and the indicator may give an alarm. Furthermore, instead of the display, or at the same time, a warning sound may be emitted. Further, when the passenger operates the system, the driver may sometimes feel annoyed by the warning sound in the warning display area, so that the driver can select the warning sound as necessary.

In the above embodiment, the CD-ROM is used as an example of map data and instruction data displayed on the screen of the display 5 as a still image, but the use is not limited to these. Not a thing.

According to the collective control mode by the common bus line as in the present invention, even during the data reading from the CD-ROM, it is possible to interrupt the operation and send the command to the MUSIC CD player to change the mode. Therefore, it is possible to allow a plurality of players to operate in parallel.

Furthermore, if a CD-ROM is further required due to the expansion of the system, it is possible to use two or more CD players for CD-ROM.

As described above, according to the vehicle-mounted image information providing system of the present invention, the MUSIC CD player directly outputs the audio information to the audio output system in an analog manner while the CD-R.
Since the OM player transfers the digital data, which is the basis of the driving support information, to the navigation device via the bus line and both players can operate simultaneously, the MUSIC is used even when the CD-ROM is used.
You can listen to music by playing CDs.

Further, since each CD player is collectively controlled by the same system controller, the operation system does not need to be changed even if a plurality of CD players are used, and each CD player does not need to have a separate operation system. Therefore, there is a space advantage.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a block diagram showing an example of the structure of a CD player, and FIGS. 3 and 4 are flow charts showing the operation when a disc is erroneously loaded. . Explanation of symbols of main parts 2 ... CD player for MUSIC 3 ... CD player for CD-ROM 4 ... Navigation device 5 ... Display 7 ... Audio amplifier 9 ... System controller

Claims (1)

[Claims] 1. A system for providing voice information to a vehicle occupant via an audio output system and image information via a display output system, wherein digital data recorded on a disk-shaped recording medium is reproduced. A first disc reproducing device, a navigation device that outputs image information that carries driving support information to the display output system based on digital data output from the first disc reproducing device, and the disc-shaped recording medium. A second method for reproducing digital audio signals recorded on different disc-shaped recording media, converting the obtained digital audio signals into analog signals, and outputting analog audio signals
Disc reproducing apparatus, the first disc reproducing apparatus,
A controller for collectively controlling the navigation device and the second disc reproducing device, wherein the control means transmits the digital data reproduced by the first disc reproducing device to the navigation device via a bus line. Analog audio output from the second disc reproducing device while transferring and transmitting control signals among the first disc reproducing device, the navigation device and the second disc reproducing device via the bus line An in-vehicle image information providing system for directly supplying a signal to the audio output system, wherein the first and second disk reproducing devices can operate simultaneously.