JP2005193874A - Onboard instrument system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an onboard instrument system which can mutually transmit respective instrument information of a front onboard instrument and a rear onboard instrument arranged on the front and rear sides of the cabin space. <P>SOLUTION: The onboard instrument system comprises the front onboard instrument 2 arranged on the front side of the cabin space, the rear onboard instrument 3 arranged on the rear side of the cabin space, and cables 4 for connecting the front onboard instrument 2 with the rear onboard instrument 3. The front onboard instrument 2 or the rear onboard instrument 3 transmits the instrument information of the front onboard instrument 2 or the rear onboard instrument 3 from the front onboard instrument 2 or the rear onboard instrument 3 to the rear onboard instrument 3 or the rear onboard instrument 3. As a result, the front onboard instrument 2 and the rear onboard instrument 3 can mutually share the instrument information. Therefore, a driver sitting near the front onboard instrument 2 and a crew member sitting near the rear onboard instrument 3 can recognize the instrument information of the rear onboard instrument 3 and the front onboard instrument 2, respectively. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an in-vehicle device system, and is suitable for application to, for example, an in-vehicle device system in which a front in-vehicle device installed near a driver seat in a vehicle interior space and a rear in-vehicle device installed in the vicinity of a rear seat are connected. It is.

  Conventionally, in an in-vehicle device, a car navigation device or a car audio device is generally installed near the driver's seat, and the in-vehicle device is rarely installed near the rear seat.

  By the way, for the passengers who get on the second row and third row seats in recent years, as the type of car called minivan with three rows seats as a classification of automobiles has become very large However, it is also becoming common for rear in-vehicle devices such as a display device to be installed in the rear seat for the purpose of enjoying TV (Television), DVD (digital Versatile Disc) or games.

In this case, for a driver who can visually check only the front in-vehicle device installed near the driver's seat, the operating state of the rear in-vehicle device installed near the rear seat and the presence or absence of display display cannot be confirmed. Due to this, if the rear in-vehicle device is used without the driver's knowledge while the engine of the vehicle is stopped, the battery will accidentally rise, so the in-vehicle playback device can check the operating state of the rear in-vehicle device near the rear seat Has been proposed (see, for example, Patent Document 1).
JP2003-237483

  By the way, in the in-vehicle playback device having such a configuration, although it is possible for the driver near the driver's seat to check whether the rear in-vehicle device near the rear seat is operating or not operating, the heat generation in the rear in-vehicle device It is not possible to recognize detailed equipment information such as equipment abnormalities such as the use time to take into account the effects on passengers due to long-term use of the rear in-vehicle equipment, and appropriate responses to equipment abnormalities There is a problem that it is impossible to measure the impact on passengers who use the rear in-vehicle equipment in the rear seat.

  The present invention has been made in consideration of the above points, and notifies each other of device information through a front in-vehicle device and a rear in-vehicle device installed in front and rear of the interior space of the vehicle, and informs the driver and It is intended to propose an in-vehicle device system that can be recognized by a passenger.

  In order to solve such a problem, in the present invention, a front in-vehicle device installed in front of the vehicle interior space, a rear in-vehicle device installed in the rear of the vehicle interior space, and a connecting means for connecting the front in-vehicle device and the rear in-vehicle device. The front in-vehicle device or the rear in-vehicle device notifies the front in-vehicle device or the rear in-vehicle device from the front in-vehicle device or the rear in-vehicle device to the rear in-vehicle device or the front in-vehicle device. In addition, the device information can be mutually shared between the in-vehicle device and the rear in-vehicle device, and the driver seat and the passenger of the front in-vehicle device and the rear in-vehicle device can recognize the device information of the rear in-vehicle device and the front in-vehicle device.

  According to the present invention, device information is shared between the front in-vehicle device and the rear in-vehicle device, and the device information of the rear in-vehicle device and the front in-vehicle device is recognized by the driver seat and the passenger of the front in-vehicle device and the rear in-vehicle device. Thus, the in-vehicle device system can notify the mutual device information through the front in-vehicle device and the rear in-vehicle device respectively installed in the front and rear of the interior space of the vehicle and allow the driver and the passenger to recognize the contents. Can be realized.

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

(1) First Embodiment (1-1) Overall Configuration of In-Vehicle Device System In FIG. 1, reference numeral 1 denotes an in-vehicle device system according to the first embodiment of the present invention as a whole, and a dash near the front seat For example, a front in-vehicle device 2 composed of a CD (Compact Disc) and an MD (Mini Disc) integrated audio unit installed in a substantially central portion of the board, and a DVD (Digital Versatile Disc) playback device installed near the rear seat, for example. The rear in-vehicle device 3 is connected by a cable 4.

(1-2) Circuit Configuration of Front In-Vehicle Device As shown in FIG. 2, the front in-vehicle device 2 is based on power supplied from the battery 23 or a vehicle-mounted power source (not shown) via the power management unit 22. The CPU (Central Processing Unit) 11 of the arithmetic processing unit 10 performs predetermined processing in accordance with a basic program and an application program started from a ROM (Read Only Memory) 13 to a RAM (Random Access Memory) 12 via a bus 16. The processing result is output from the display unit 19 and the speaker 20 via the interface unit 15.

  Further, the front in-vehicle device 2 receives a command corresponding to a rotation operation and a pressing operation on the hardware switch 18 provided on the surface of the main body by the CPU 11 of the arithmetic processing unit 10 via the operation input unit 17, and a disk according to the command. A display unit that operates the drive 25 to play a CD or MD, reads a music file from the non-volatile memory 14 and outputs it from the speaker 20, or reads video data read from the hard disk 21 by an LCD (Liquid Crystal Display). A predetermined process such as output to 19 and display is executed.

  Further, the front in-vehicle device 2 is wired to the rear in-vehicle device 3 via the communication processing unit 24 and the cable 4, and receives device information to be described later from the rear in-vehicle device 3.

(1-3) Circuit Configuration of Rear In-Vehicle Device On the other hand, as shown in FIG. The CPU 41 of the arithmetic processing unit 40 executes predetermined processing according to the basic program and the application program started up from the ROM 43 to the RAM 42 via the bus 46, and the processing result is displayed as an interface unit. The information is output from the display unit 54 which is an LCD via the display 45.

  The rear in-vehicle device 3 receives a command input via the operation input unit 47 by the CPU 41 of the arithmetic processing unit 40, operates the disk drive 53 in accordance with the command, reproduces the DVD, and outputs it from the display unit 54 as video. Or other various video data read out from the non-volatile memory 44 or the hard disk 48 are output to the display unit 54 and displayed.

  The rear in-vehicle device 3 includes a sensor unit 52, which detects whether or not the connection state with the front in-vehicle device 2 is maintained, or detects ignition, heat generation temperature, operation time of the rear in-vehicle device 3, battery Device information such as the presence / absence of 50 and the remaining capacity, CD / DVD playback audio, elapsed time of playback video, remaining time, and media reading error is detected and transmitted to the CPU 41, and from the CPU 41 to the communication processing unit 51 and the cable 4 It is made to transmit to the front vehicle equipment 2 via.

  The sensor unit 52 includes a controller, PDA (Personal Digital Assistant), memory card, GPS (Global Positioning System) module, mouse, headphones, power cable, camera, external hard disk, network cable, mobile phone, LAN ( It is also possible to detect device information such as whether or not a connection state with a local area network) card and external devices such as external media is maintained.

(1-4) Device information notification processing procedure to the front in-vehicle device in the rear in-vehicle device Next, in the in-vehicle device system 1, various device information in the rear in-vehicle device 3 is transmitted from the rear in-vehicle device 3 to the front in-vehicle device 2. The device information notification processing procedure to be notified will be described with reference to the flowchart of FIG.

  The CPU 41 of the rear in-vehicle device 3 enters from the start step of the routine RT1 and proceeds to step SP1. In step SP1, the sensor unit 52 performs a sensor check to determine whether any abnormality has occurred in the rear in-vehicle device 3; The process proceeds to step SP2.

  In step SP2, the CPU 41 of the rear in-vehicle device 3 determines whether or not any abnormality has occurred in the rear in-vehicle device 3 itself based on the information from the sensor unit 52. A result is obtained and the process proceeds to step SP4. If an abnormality has occurred, a positive result is obtained and the process proceeds to the next step SP3.

  In step SP3, the CPU 41 of the rear in-vehicle device 3 transmits device information indicating an abnormality occurring in the rear in-vehicle device 3 by transmitting the device information to the front in-vehicle device 2 via the communication processing unit 51 and the cable 4. The process proceeds to step SP4.

  In step SP4, the CPU 41 of the rear in-vehicle device 3 determines whether or not the device information notification process should be terminated. Here, when the CPU 41 of the rear in-vehicle device 3 detects that the power of the rear in-vehicle device 3 is turned off, the CPU 41 obtains a positive result, moves to next step SP5, and ends the device information notification processing procedure.

  On the other hand, if a negative result is obtained in step SP4, the CPU 41 of the rear in-vehicle device 3 returns to step SP1 and repeats the above-described device information notification process again.

(1-5) Device Information Reception Display Processing Procedure in Front In-Vehicle Device Subsequently, device information reception display processing procedure in which the device information transmitted from the rear in-vehicle device 3 in the in-vehicle device system 1 is received and displayed by the front in-vehicle device 2. Will be described with reference to the flowchart of FIG.

  The CPU 11 of the front in-vehicle device 2 enters from the start step of the routine RT2, moves to step SP11, and determines whether or not device information is received from the rear in-vehicle device 3 via the cable 4 and the communication processing unit 24 in the step SP11. To do.

  Here, the CPU 11 of the front in-vehicle device 2 obtains a negative result when the device information is not received from the rear in-vehicle device 3 and proceeds to step SP18, and obtains an affirmative result when the device information is received and performs the next step. Move to SP12.

  In step SP12, the CPU 11 of the front in-vehicle device 2 confirms whether the received device information is correct in the device information sent from the rear in-vehicle device 3 based on the device ID (Identification) or the like, and the next step SP13 Move on. Note that the CPU 11 of the front in-vehicle device 2 confirms the device information from which rear in-vehicle device based on the device ID or the like even when there are a plurality of the rear in-vehicle devices 3, for example.

  In step SP13, the CPU 11 of the front in-vehicle device 2 determines the specific contents of the device information (the connection state between the front in-vehicle device 2 and the rear in-vehicle device 3, the ignition, the heat generation temperature, the operating time of the rear in-vehicle device 3, It recognizes what the battery 50 is, the remaining capacity, DVD playback sound, playback video elapsed time, media read error, etc.), and proceeds to the next step SP14.

  In step SP14, the CPU 11 of the front in-vehicle device 2 determines whether or not the device information received from the rear in-vehicle device 3 should be displayed by the display unit 19. Here, the CPU 11 of the front in-vehicle device 2 determines that the necessity of outputting the device information is insufficient when the specific content of the device information is not important from the viewpoint of, for example, a failure. If the device information is important from the viewpoint of failure and danger such as “

  That is, if a negative result is obtained in step SP14, the CPU 11 of the front in-vehicle device 2 returns to step SP11 without outputting the device information and repeats the device information reception process. If a positive result is obtained, the CPU 11 proceeds to the next step SP15. .

  In step SP15, the CPU 11 of the front in-vehicle device 2 should immediately notify the display unit 19 only when the specific content of the device information is to notify the rear in-vehicle device 3 that a “fire” has occurred. It is determined that there is a positive result, and other than that, it is determined that the content is not enough to notify immediately, and a negative result is obtained.

  That is, if a negative result is obtained in step SP15, the CPU 11 of the front in-vehicle device 2 moves to step SP16 and waits for display of device information until the front in-vehicle device 2 finishes displaying the content currently being processed on the display unit 19, Control goes to the next step SP17.

  In step SP15, if the CPU 11 of the front in-vehicle device 2 obtains a positive result in step SP14, the CPU 11 proceeds to the next step SP17 and displays the specific content of the device information superimposed on the screen currently displayed on the display unit 19, Control goes to the next step SP18.

  In this case, as shown in FIG. 6, the CPU 11 of the front in-vehicle device 2 has urgent content even if the display screen 60 showing the elapsed playback time of the DVD is being displayed on the display unit 19. Along with the model number (XX-XXX) of the rear in-vehicle device 3, a character display of "Fire is out!" Is superimposed on the display screen 60 as a warning screen 61.

  Note that the CPU 11 of the front in-vehicle device 2 not only displays the warning screen 61 on the display screen 60 but also displays the audio guidance “fire is out!” At the same time because the device information is urgent. Do through.

  In step SP18, the CPU 11 of the front in-vehicle device 2 determines whether or not the device information reception display process should be terminated. When the CPU 11 of the front in-vehicle device 2 detects that the power of the front in-vehicle device 2 has been turned off, the CPU 11 obtains a positive result and proceeds to the next step SP19 to end the device information reception display processing procedure.

  On the other hand, if a negative result is obtained in step SP18, the CPU 11 of the front in-vehicle device 2 returns to step SP11 and repeats the above-described processing.

(1-6) Operation and Effect In the above configuration, in the in-vehicle device system 1, when the CPU 41 of the rear in-vehicle device 3 detects an abnormality in the rear in-vehicle device 3 via the sensor unit 52, device information indicating the occurrence of the abnormality. Is transmitted to the CPU 11 of the front in-vehicle device 2.

  The CPU 11 of the front in-vehicle device 2 displays a warning screen 61 on the display screen 60 (FIG. 6) only when the importance of the device information is high and urgency is required according to a preprogrammed application as a default. However, the device information that is not so important and does not require urgency is displayed after the in-vehicle device 2 gives priority to the processing content currently displayed on the display unit 19 and displays the processing content. To do.

  As described above, in the in-vehicle device system 1, while all the device information of the rear in-vehicle device 3 is transmitted from the rear in-vehicle device 3 to the front in-vehicle device 2, the front in-vehicle device 2 responds to the importance and urgency of the device information. It is possible to automatically determine whether or not to display and control output.

  As a result, the CPU 11 of the front in-vehicle device 2 can immediately display the device information of high importance and urgency via the display unit 19 of the front in-vehicle device 2 and warn the driver. The low device information can be displayed later, giving priority to the current processing content.

  According to the above configuration, in the in-vehicle device system 1, the rear in-vehicle device 3 notifies the front in-vehicle device 2 of the device information of the rear in-vehicle device 3, whereby the front in-vehicle device 2 and the rear in-vehicle device 3 are notified. The device information can be shared, and the driver can recognize the device information of the rear in-vehicle device 3 while performing output control according to the importance and urgency of the device information by the front in-vehicle device 2.

(2) Second Embodiment (2-1) Overall Configuration of In-Vehicle Device System In FIG. 7, in which parts corresponding to those in FIG. 1 are assigned the same reference numerals, 70 is the second embodiment of the present invention as a whole. 1 shows a vehicle-mounted device system in the form, for example, a front vehicle-mounted device 72 composed of, for example, a navigation device installed near the center of the dashboard near the front seat, and a rear vehicle-mounted device 73 composed of a game device installed near the rear seat. It has a configuration connected by a cable 4.

  The front in-vehicle device 72 includes a display unit 81 and hardware switches 82 and 83, and is provided with a disk-shaped storage medium mounting port 84 in which map data and the like are stored. On the other hand, the rear in-vehicle device 73 is connected to a display device 74 and game controllers 75 and 76, and a passenger in the rear seat can enjoy the game by operating the game controller 75 or 76 while watching the display device 74. It is made to be able to.

(2-2) Circuit Configuration of Front In-Vehicle Device In FIG. 8 in which the same reference numerals are assigned to the corresponding parts in FIG. 2, the front in-vehicle device 72 starts from the battery 23 and the in-vehicle power source (not shown). The CPU 11 of the arithmetic processing unit 10 executes predetermined processing according to the basic program and the application program started up from the ROM to the RAM 12, and the processing result is transmitted via the interface unit 15. Are output from the display unit 81 and the speaker 20.

  Further, the front in-vehicle device 72 receives a command corresponding to a rotation operation and a pressing operation on the hardware switches 82 and 83 provided on the surface of the main body by the CPU 11 of the arithmetic processing unit 10 via the operation input unit 17, and according to the command The disk drive 25 is operated to perform predetermined processing such as reading map data from the disk-shaped storage medium or outputting and displaying the video data read from the hard disk 21 to the display unit 81, and the GPS antenna 86 and The current position is measured via the GPS positioning unit 85, and the measured current position is superimposed on the map of the display unit 81 and displayed.

  Further, the front in-vehicle device 2 is wired to the rear in-vehicle device 73 via the communication processing unit 24 and the cable 4, and receives device information from the rear in-vehicle device 73.

(2-3) Circuit Configuration of Rear In-Vehicle Device In FIG. 9, in which the same reference numerals are assigned to parts corresponding to those in FIG. The CPU 41 of the arithmetic processing unit 40 executes predetermined processing in accordance with the basic program and application program launched from the ROM 43 to the RAM 42, and the processing result Is output from the display device 74 formed of an LCD via the interface unit 45.

  The rear in-vehicle device 73 receives a command input from the game controllers 75 and 76 via the operation input unit 47 by the CPU 41 of the arithmetic processing unit 40 and operates the disk drive 53 according to the command to store the game program. The recorded DVD is played and output as a game video from the display device 74, the saved game program is read from the nonvolatile memory 44, or other various video data and game-related data read from the hard disk 48 are displayed on the display device 74. A predetermined process such as output and display is executed.

  Note that the rear in-vehicle device 73 has the sensor unit 52 as in the rear in-vehicle device 3 in the first embodiment, thereby detecting whether or not the connection state with the front in-vehicle device 72 is maintained or firing. , Heat generation temperature, operating time of the rear in-vehicle device 73, input information from the game controllers 75 and 76, standby time of the game controllers 75 and 76, presence / absence of the battery 50 and remaining capacity, DVD playback sound, playback video Device information such as elapsed time, remaining time, and media reading error is detected and transmitted to the CPU 41, and from the CPU 41 to the in-vehicle device 72 via the communication processing unit 51 and the cable 4.

  The sensor unit 52 is connected to external devices such as a controller, PDA, memory card, mouse, keyboard, headphones, power cable, camera, external hard disk, network cable, mobile phone, LAN card, and external media in addition to these. It is also possible to detect device information such as whether or not is maintained.

(2-4) Procedure for Notifying Device Information to Front In-Vehicle Device Using Transmission Determination Table in Rear In-Vehicle Device Next, when in-vehicle device system 70 notifies device information from rear in-vehicle device 73 to front in-vehicle device 72. A series of flows when the transmission determination table is used will be described with reference to FIGS.

  As shown in FIG. 10, the CPU 41 of the rear in-vehicle device 73 enters from the start step of the routine RT3 and moves to the next step SP21, and no abnormality has occurred in the rear in-vehicle device 73 by the sensor unit 52 in the step SP21. A sensor check is performed, and the process proceeds to the next step SP22.

  In step SP22, the CPU 41 of the rear in-vehicle device 73 determines whether or not any abnormality has occurred in the rear in-vehicle device 73 itself based on information from the sensor unit 52. The result is obtained and the process proceeds to step SP25. If an abnormality has occurred, an affirmative result is obtained and the process proceeds to the next step SP23.

  In step SP23, the CPU 41 of the rear in-vehicle device 73 determines whether or not device information indicating an abnormality occurring in the rear in-vehicle device 73 should be transmitted to the front in-vehicle device 72 via the communication processing unit 51 and the cable 4. If it is determined that the transmission should not be performed, the process proceeds to step SP25. If it is determined that the transmission should be performed, the process proceeds to the next step SP24.

  Here, as shown in FIG. 11, the CPU 41 of the rear in-vehicle device 73 determines whether or not the device information should be transmitted to the front in-vehicle device 72 according to the transmission determination table 80 stored in the hard disk 48 in advance.

  In the transmission determination table 80, when the type of device information is warning information (ignition, smoke, etc.), general information (operation time of the rear in-vehicle device 73, input information from the game controllers 75 and 76, and the game controller) 75, 76 standby time, presence / absence of battery 50 and remaining capacity, DVD playback audio, playback video elapsed time, remaining time, media read error, etc.) are highly important and urgent. It should be transmitted in the sense of caring about the passenger in use, and is important when the connection information (whether or not the connection state between the rear vehicle equipment 73 and the game controllers 75 and 76 is maintained) It is set so that it should not be transmitted because it is considered to be less urgent.

  That is, in the transmission determination table 80, it is device information that is extremely urgent with respect to the rear in-vehicle device 73 such as a fire or a fire, or the rear in-vehicle device 73 such as the remaining battery level or the remaining time can be reproduced. It is set that it should be transmitted when it is highly important device information that may be lost, and other connection information is set not to be specially transmitted device because its importance and urgency are low .

  The contents of the transmission determination table 80 can be freely rewritten. As shown in FIG. 12, in the rear in-vehicle device 3, warning information, general information, and connection information are displayed on the menu of the transmission setting screen 90 displayed in advance on the display device 74. Each time the selection buttons 91 to 93 corresponding to each are pressed, “Transmission OK” or “Transmission NG” can be switched alternately.

  Accordingly, the driver has high importance and urgency regarding the warning information and the general information among the device information generated in the rear in-vehicle device 73 while the passenger is using the rear in-vehicle device 73. It is possible to freely change and adjust, for example, by setting to notify the front in-vehicle device 72 and setting the connection information to non notification.

  In step SP24, when the device information means warning information or general information, the CPU 41 of the rear in-vehicle device 73 transmits the device information by transmitting the device information to the front in-vehicle device 72 according to the transmission determination table 80. Control goes to step SP25.

  On the other hand, in step SP25, the CPU 41 of the rear in-vehicle device 73 determines whether or not the device information notification process should be terminated. Here, when the CPU 41 of the rear vehicle equipment 73 detects that the power of the rear vehicle equipment 73 is turned off, the CPU 41 obtains an affirmative result, moves to the next step SP26, and ends the device information notification processing procedure.

  On the other hand, if a negative result is obtained in step SP25, the CPU 41 of the rear in-vehicle device 73 returns to step SP21 and repeats the device information notification process for the front in-vehicle device 2 using the transmission determination table 80 again.

(2-5) Device Information Reception Display Processing Procedure Using Output Determination Table in Front In-Vehicle Device Next, device information sent from the rear in-vehicle device 73 in the in-vehicle device system 70 is received by the front in-vehicle device 72 and displayed. A series of flow in the case of using the output determination table at the time will be described with reference to FIGS.

  As shown in FIG. 13, the CPU 11 of the front in-vehicle device 72 enters from the start step of the routine RT4 and moves to step SP31, and receives device information from the rear in-vehicle device 73 via the cable 4 and the communication processing unit 24 in the step SP31. Determine whether or not.

  Here, the CPU 11 of the front in-vehicle device 72 proceeds to step SP38 when the device information is not received from the rear in-vehicle device 73, and proceeds to the next step SP32 when the device information is received.

  In step SP32, the CPU 11 of the front in-vehicle device 72 confirms whether the received device information is correct in the device information sent from the rear in-vehicle device 73 based on the device ID or the like, and proceeds to the next step SP33. Note that the CPU 11 of the front in-vehicle device 72 confirms the device information from which rear in-vehicle device based on the device ID or the like even when there are a plurality of the rear in-vehicle devices 73, for example.

  In step SP33, the CPU 11 of the front in-vehicle device 72 determines the specific contents of the device information (the connection state between the front in-vehicle device 72 and the rear in-vehicle device 73 has been released, ignition, heat generation temperature, operating time of the rear in-vehicle device 73, It recognizes what the waiting time of the game controllers 75 and 76, the presence / absence and remaining capacity of the battery 50, the playback sound of the DVD, the elapsed time of the playback video, the media reading error, etc.), and the process proceeds to the next step SP34.

  In step SP34, the CPU 11 of the front in-vehicle device 72 determines whether the device information received from the rear in-vehicle device 73 should be displayed by the display unit 81 according to the output determination table 100 shown in FIG.

  In the output determination table 100, among the device information (warning information and general information) received from the rear in-vehicle device 73, the front in-vehicle device 72 is performing a predetermined process and is performing some display via the display unit 81. Whether or not to display the device information and a display form in the case of displaying the device information are set.

  Specifically, in the output determination table 100, the received device information is warning information, and even when the current on-vehicle device 72 is displaying a navigation map on the display unit 81 or displaying a menu screen, the warning is displayed. The information is set to be displayed on the full screen on the display unit 81 and to perform voice guidance.

  In the output determination table 100, when the received device information is warning information, and the current front vehicle-mounted device 72 is executing the navigation guide on the display unit 81, the warning information is displayed on the display unit 81 in a small screen. At the same time, it is set to perform voice guidance.

  Further, in the output determination table 100, when the received device information is warning information and the current on-vehicle device 72 is currently displaying traffic information on the display unit 81, the warning information is displayed on the display unit 81 in a small screen. However, voice guidance is not set at this time.

  Further, in the output determination table 100, when the received device information is general information and the current on-vehicle device 72 is currently being displayed as a navigation map on the display unit 81, the general information is displayed as an icon on the display unit 81. If the device information is general information and the front in-vehicle device 72 is currently displaying the menu screen, the general information is not displayed on the screen and the voice guidance is also set. Not performed.

  The output determination table 100 includes display form selection buttons 111 to 113, voice guidance selection buttons 114 to 116, and priority selection buttons 117 to 119 via the output setting screen 110 in advance in the in-vehicle device 72 as shown in FIG. The output situation can be freely changed by selecting arbitrarily.

  Thus, the driver changes the contents of the output determination table 100 to determine whether or not to output warning information and general information on the screen according to the desired priority level. Whether to display or icon display and whether to perform voice guidance can be set in detail.

  In steps SP35, 36, and 37, the CPU 11 of the front in-vehicle device 72 performs warning information or general information display in full screen, child screen, or icon in accordance with the output determination table 100, and proceeds to the next step SP38.

  For example, as shown in FIG. 16, in step SP36, the CPU 11 of the front in-vehicle device 72 is important even when the destination is being guided while the guide screen 121 is displayed on the sub screen in the navigation guide screen 120 according to the output determination table 100. The character display of “Smoke is generated !!!! Smoke is generated!” As a warning screen 122 can be superimposed on the navigation guide screen 120.

  At this time, the CPU 11 of the front in-vehicle device 72 not only displays the warning screen 122 on the navigation guide screen 120 but also displays the voice guidance “Smoke is emitted!” At the same time because the device information is urgent. This is done through the speaker 20.

  In step SP38, the CPU 11 of the front in-vehicle device 72 determines whether or not the device information reception display process should be terminated. Here, when the CPU 11 of the front in-vehicle device 72 detects that the power of the front in-vehicle device 72 is turned off, the CPU 11 obtains a positive result and proceeds to the next step SP39, and device information reception display processing using the output determination table End the procedure.

  On the other hand, if a negative result is obtained in step SP38, the CPU 11 of the front in-vehicle device 72 determines that the device information reception display processing should not be terminated, returns to step SP31, and repeats the above processing.

(2-6) Operation and Effect In the above configuration, in the in-vehicle device system 70, when the CPU 41 of the rear in-vehicle device 73 detects an abnormality in the rear in-vehicle device 73 via the sensor unit 52, device information indicating the occurrence of the abnormality. Is transmitted according to the transmission determination table 80, and only the device information having high importance and urgency is transmitted to the forward in-vehicle device 72, but the device information that is not so is not transmitted.

  The CPU 11 of the front in-vehicle device 72 displays warning information and general information according to the output determination table 100 for device information (warning information and general information) having high importance and urgency among the device information received from the rear in-vehicle device 73. Specifically, the warning information is displayed on the full screen when the map is being displayed on the display unit 81, and the navigation guide is concealed when the navigation guide is being displayed on the display unit 81. It is possible to perform display control such as displaying warning information in a small screen so as not to occur.

  In the in-vehicle device system 70, the contents can be arbitrarily changed in the transmission determination table 80 and the output determination table 100, so that only the device information to be transmitted from the rear in-vehicle device 73 is transmitted to the front in-vehicle device 72. Also, only the device information desired to be output on the screen can be selectively displayed on the front in-vehicle device 72, and further, the display form can be freely set, so that it is possible to flexibly respond to the driver's request.

  According to the above configuration, in the in-vehicle device system 70, the rear in-vehicle device 73 transmits the device information to the front in-vehicle device 72 according to the transmission determination table 80, so that only the device information of the type desired by the driver is concerned. And the front in-vehicle device 2 can be shared, and the device information received by the front in-vehicle device 2 from the rear in-vehicle device 73 is output on the screen according to the output determination table 100. In addition, the driver can recognize the device information of the rear in-vehicle device 3 while performing output control according to the urgency.

(3) Other Embodiments In the first and second embodiments described above, devices that indicate an abnormality in the rear in-vehicle devices 3 and 73 from the rear in-vehicle devices 3 and 73 in the in-vehicle device systems 1 and 70. Although the case where information is notified to the front in-vehicle devices 2 and 72 has been described, the present invention is not limited thereto, and device information of the front in-vehicle devices 2 and 72 is notified to the rear in-vehicle devices 3 and 73. Also good.

  Further, in the above-described second embodiment, the case where the device information notification processing procedure and the device information reception display processing procedure are executed according to the transmission determination table 80 and the output determination table 100 has been described. Not limited to this, all device information may be notified to the front in-vehicle device 72 without using the transmission determination table 80, and the front in-vehicle device 72 may execute the device information reception display processing procedure according to the output determination table 100. On the contrary, the device information is notified to the front in-vehicle device 72 according to the transmission determination table 80, and the front in-vehicle device 72 displays only warning information having high importance and urgency in the device information without using the output determination table 100. You may make it output.

  Further, in the first and second embodiments described above, the case where the front in-vehicle devices 2 and 72 and the rear in-vehicle devices 3 and 73 are wiredly connected by the cable 4 as a connection means has been described. The invention is not limited to this, and wireless connection may be made using IEEE (Institute of Electrical and Electronics Engineers) 802.11g, Bluetooth communication system, or the like.

  Furthermore, in the first embodiment described above, the in-vehicle device system 1 is configured by the front in-vehicle device 2 that is a CD and MD integrated audio unit and the rear in-vehicle device 3 that is a DVD playback device, and the second embodiment. In the embodiment, the case where the in-vehicle device system 70 is configured by the front in-vehicle device 72 that is a navigation device and the rear in-vehicle device 73 that is a game device is described, but the present invention is not limited to this, and the front in-vehicle device. The in-vehicle device systems 1 and 70 may be configured by various other electronic devices as the second and second in-vehicle devices 3 and 73.

  The in-vehicle device system of the present invention can be used for various applications that require, for example, connecting a front in-vehicle device and a rear in-vehicle device and notifying one device information to the other.

It is a basic diagram which shows the whole structure of the vehicle equipment system in the 1st Embodiment of this invention. It is a rough block diagram which shows the circuit structure of the front vehicle equipment in 1st Embodiment. It is a rough block diagram which shows the circuit structure of the back vehicle equipment in 1st Embodiment. It is a flowchart which shows the apparatus information notification process procedure to the front vehicle equipment in a back vehicle equipment. It is a flowchart which shows the apparatus information reception display processing procedure in a front vehicle equipment. It is a basic diagram which shows the display screen at the time of warning. It is a basic diagram which shows the whole structure of the vehicle equipment system in the 2nd Embodiment of this invention. It is a basic block diagram which shows the circuit structure of the front vehicle-mounted apparatus in 2nd Embodiment. It is a basic block diagram which shows the circuit structure of the back vehicle equipment in 2nd Embodiment. It is a flowchart which shows the apparatus information notification process procedure to the front vehicle equipment using the transmission determination table in a back vehicle equipment. It is a basic diagram which shows the content of the transmission determination table. It is a basic diagram which shows a transmission setting screen. It is a flowchart which shows the apparatus information reception display process procedure using the output determination table in a front vehicle equipment. It is a basic line which shows the content of the output determination table. It is a basic diagram which shows an output setting screen. It is a basic diagram which shows the navigation guide screen by which the sub-screen display of warning information was carried out.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,70 ... Vehicle-mounted apparatus system 2, 72 ... Front vehicle-mounted apparatus 3, 73 ... Back vehicle-mounted apparatus, 4 ... Cable, 5, 74 ... Display apparatus, 75, 76 ... Game controller, 10 , 40... Arithmetic processing unit, 11, 41... CPU, 19, 81... Display unit, 21, 48.

Claims (8)

A front in-vehicle device installed in front of the interior space of the vehicle;
A rear in-vehicle device installed behind the interior space,
A connecting means for connecting the front in-vehicle device and the rear in-vehicle device,
The front vehicle-mounted device or the rear vehicle-mounted device notifies device information of the front vehicle-mounted device or the rear vehicle-mounted device from the front vehicle-mounted device or the rear vehicle-mounted device to the rear vehicle-mounted device or the front vehicle-mounted device. In-vehicle device system. The front in-vehicle device or the rear in-vehicle device performs the notification by displaying warning information regarding the front in-vehicle device or the rear in-vehicle device as the device information on the display unit of the rear in-vehicle device or the front in-vehicle device. The in-vehicle device system according to claim 1. The front in-vehicle device or the rear in-vehicle device performs the notification by displaying connection information regarding the front in-vehicle device or the rear in-vehicle device as the device information on the display unit of the rear in-vehicle device or the front in-vehicle device. The in-vehicle device system according to claim 1. The front in-vehicle device or the rear in-vehicle device performs the notification by displaying operating time information regarding the front in-vehicle device or the rear in-vehicle device as the device information on the display unit of the rear in-vehicle device or the front in-vehicle device. The in-vehicle device system according to claim 1. Connection means for connecting a front in-vehicle device installed in front of the interior space and a rear in-vehicle device installed in the rear of the interior space;
Control device for notifying device information of the rear in-vehicle device to the front in-vehicle device via the connection means. A connecting step of connecting a front in-vehicle device installed in front of the interior space and a rear in-vehicle device installed in the rear of the interior space through a predetermined connection means;
And a control step of notifying the front in-vehicle device of device information of the rear in-vehicle device via the connection means connected in the connection step. A connecting means for connecting a front in-vehicle device installed in front of the interior space and a rear in-vehicle device installed in the rear of the interior space;
Receiving means for receiving device information in the rear vehicle equipment from the rear vehicle equipment via the connection means;
A forward in-vehicle device comprising: output means for outputting only preset importance or urgent equipment information among the equipment information received by the receiving means. A connection step for connecting a front in-vehicle device installed in front of the interior space and a rear in-vehicle device installed in the rear of the interior space via a predetermined connection means;
A receiving step of receiving device information in the rear vehicle equipment from the rear vehicle device via the connection means connected in the connection step;
A device information output method for a forward in-vehicle device, comprising: an output step of outputting only preset device information of high importance or urgency among the device information received in the reception step.

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