JPH10115528A - In-vehicle display device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To enable a new extended display on a display means so that it can be connected to an external storage medium having a built-in application program for an extended display on an in-vehicle display device. thing. SOLUTION: The in-vehicle display device comprises a display means 9, an in-vehicle computer 4 containing a program for displaying predetermined information, and operation means 10 and 11 capable of key input operation.
Prohibition condition detecting means 226, 228, 250 for detecting operation prohibition conditions of the operation means 10, 11 according to the driving state.
And Further, the in-vehicle computer 4 can be connected to an external storage medium 13 having a built-in application program for performing a new extended display on the display means 9. Then, the in-vehicle computer 4 causes the new extended display to be performed, and the prohibition condition detecting means 226, 228,
An interpreter program having a function of prohibiting the execution of processing related to the operation of the operation means 10 and 11 in the application program when the prohibition condition is detected in 250 is further provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-vehicle display device for displaying predetermined information on a vehicle, for example, a map.

[0002]

2. Description of the Related Art Conventionally, in a display device of this kind, a display program is built in a ROM of a vehicle-mounted computer, and only a fixed display is performed in accordance with the program.

[0003]

Therefore, it is not possible to use another display program later, and it is not possible to provide an extended display function. The present invention has been made in view of the above problems, and provides an in-vehicle display device which can be connected to an external storage medium having a built-in application program for performing an extended display and which can perform a new extended display on a display means. The purpose is to do.

[0004]

According to the present invention, in order to achieve the above object, a display means for displaying predetermined information on a vehicle as shown in FIG. An in-vehicle display device having a vehicle-mounted computer having a program for causing the display means to perform the predetermined information display, wherein an operation means for performing an operation related to display on the display means; A prohibition condition detecting means for detecting an operation prohibition condition with respect to the operation of the operation means, wherein the on-vehicle computer has an external storage having a built-in application program for performing a new extended display on the display means. The display means can be connected to a medium, and further executes the application program to cause the display means to perform the extended display. When it detects the prohibition condition by the condition detecting unit is characterized by further comprising an interpreter program having a function of prohibiting the operation and related process execution of the operating means in the application program.

[0005] Therefore, an extended display can be performed by executing the application program using an external storage medium having the application program built therein.
At the time of the extended display by executing the application program, the operation restriction according to the driving state of the vehicle can be regulated on the in-vehicle computer side.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings. FIG. 1 is an overall configuration diagram showing one embodiment. In FIG. 1, the map data CDI stores map data, and the map data C
D is set in the autochanger 2 in a plural number.
The map data is read from a specific map data CD by selection from the map CD driver 3 by the autochanger 2. From which map data CD the map data is read is determined based on an instruction from the computer 4.

The computer 4 includes information necessary for performing navigation display, air conditioner operation, audio operation display, and telephone operation display, which will be described later, from a navigation ECU 5, an A / C ECU 6, an audio ECU 7, and a telephone ECU 8 installed in the vehicle. This information includes vehicle speed information described later). Here, the information from the navigation ECU 5 includes data indicating the current location of the vehicle.

The computer 4 has a cursor key 1 for moving a cursor displayed on the screen of the CRT 9.
0a and the like, panel switches 9a to 9f installed around the screen of CRT 9, and C
In accordance with the switch information from the touch switch 11 installed on the screen of the RT 9, an arithmetic process for displaying navigation, air conditioner operation, audio operation, telephone operation, and the like on the screen of the CRT 9 is executed. In addition, the buzzer 12 is driven in response to the switch operation to generate a beep sound.

In the navigation display, processing such as displaying the current position on a map display is performed by a predetermined navigation display program in the computer 4. However, in addition to the basic navigation display, an extended display is used. The application program provided in the above allows various navigation application displays using the map data.

The application CD 13 is used for this purpose, and a CD storing a golf course guide program described later, a CD storing a gourmet map program for guiding a restaurant, and the like are prepared as CDs. Is set in the auto changer 14. A normal music CD is also mounted on the autochanger 14. The music CD driver 15 determines whether a CD is in the autochanger 14 and where and what kind of CD is in the autochanger 14, and selects a music CD in response to a command from the computer 4. Outputs the music CD from the music CD to the speaker 16 as a PCM output so that the music is played in the vehicle interior. When an application CD other than the music CD is selected, the program stored therein is sent to the computer 4.

FIG. 2 is a diagram showing the relationship between the computer 4 and programs on the application CD. A plurality of application CDs each storing an application program such as a golf course guide, a gourmet map, a hotel map, and a diary are mounted in the autochanger 14, and a specific application program is downloaded into the computer 4. The downloaded application program is subjected to various checks by the interpreter and executed.
That is, since the application CD is created by various users separately from the program in the in-vehicle computer 4, the application CD matches the program in the computer 4 (protects the program in the computer 4), and It is checked whether or not the user who has permitted the creation of the application CD creates an application program within the permitted range, and the program after the check is executed by the interpreter. The check is performed for each instruction code of the application program.

The computer 4 displays various display programs as system applications, such as navigation display processing, audio display processing, air conditioner display processing, telephone operation display processing, TV display processing, place name search operation processing, and maintenance manual display processing. One of the application programs executed through the interpreter is executed, and a corresponding display is displayed on the CRT 9. In such a display program, the input / output devices of the computer 4, that is, the CRT 9, the panel switches 9a to 9f, C in FIG.
The processing with the D drivers 3, 15 and the various ECUs 5 to 8 is performed using a system basic program (OS).

When another display is to be performed from the program currently being displayed (the display application shown in FIG. 3), panel switches 9a to 9 provided on the CRT 9 are provided.
Perform by operating f. The switching is controlled as an application control process in a system application. FIG. 4 shows the application control process. When one of the panel switches 9a to 9f is operated, the process is started from the start step 100, and the panel switches 9a to 9f operated in the step 101 are operated. Determine the type.

When the navigation switch 9a is operated,
At step 102, the navigation display processing of FIG. 2 is executed. In the navigation display processing, map data of a desired area is read from the map data CD, a road map is displayed on the screen of the CRT 9, and the navigation E is displayed.
The data indicating the current position is input from the CU 5 to execute a calculation process necessary for normal navigation such as calculating the current position on the road map.

When the audio switch 9b is operated, the audio operation display processing of FIG. 2 is executed in step 103. In the audio operation display processing, the CRT 9 is used based on information from the audio ECU 7.
Audio operation display. Similarly, A / C switch 9
c, even when the TEL switch 9d and the TV switch 9e are operated, the processes of steps 104, 105 and 106 are executed to execute the processes of the air conditioner operation display, the telephone operation display and the TV display in FIG. Telephone EC
U8, information corresponding to the information from the TV ECU (not shown in FIG. 1) is displayed on the CRT 9.

When the menu switch 9f is operated, the menu shown in FIG. 4 is displayed in step 107. This menu display is composed of CD software, a place name search, and a maintenance manual.
Or a signal corresponding to the position is obtained, or the cursor provided at the number displayed on the left side of each display (indicated by the number 1 in the figure) is moved by the cursor key 10a and the set key 10b is operated. The process of the next menu selection step 108 is performed with the number indicating the cursor position at the time. Here, when the place name search of No. 2 is selected, the place name search operation processing of FIG. In this place name search operation processing, CR
A place name is displayed on the screen of T9, a place name is searched by operating the touch switch 11, the cursor key 10a, and the like, and processing such as setting a destination in navigation and registering a registered place such as a home is performed. When the maintenance manual of No. 3 is selected, the maintenance manual display process of FIG. 2 is executed from step 111, and the maintenance manual is displayed on the screen of the CRT 9.

If the CD software No. 1 is selected, the interpreter program shown in FIG. In this interpreter program, the processing is started from step 200,
In step 201, the title of the CD software shown in FIG. 5 is displayed. This title display reads out the type of the application CD mounted in the autochanger 14 and displays the type.
If the application CDs of the gourmet map, the hotel map, and the diary are installed, they are displayed as shown in the figure. Then, as in step 108 described above in step 202, the touch switch 11, the cursor key 1
Any of them is selected by an operation such as 0a. Here, when the golf course guide of No. 1 is selected, the system ID stored in the first part of the golf course guide application CD is read in step 203. The system ID is used to check whether or not the user who has created the application CD is authorized to create the application CD, and all application CDs have this system ID. This system ID includes an access level described later. Based on the system ID, in the next step 205, it is checked whether the system ID is a permitted ID. If the ID is not a permitted ID, the process proceeds to step 206, where an error message is displayed on the screen of the CRT 9, and the process is terminated. Therefore, in this case, the processing is not executed by the application CD.

On the other hand, if the system ID is a permitted ID, the process proceeds to step 207, where the access level stored together with the system ID is recorded. This access level limits the commands that can be used by the user who created the application CD. The access level is divided into, for example, the following three levels, which can be used according to each access level. Command is set. Here, at the access level 1, the basic command is a command such as a four arithmetic operation or a function operation such as a trigonometric function. The service command includes graphic operations such as a straight line, a circle, and a rectangle, a touch switch 11, and a cursor key 10.
Commands for standard input operation such as a, beep sound operation, and the like. This access level 1 is the lowest access level. Access level 2 is access level 1
In addition to the commands that can be used in, commands for accessing vehicle information such as map access and the current vehicle location can be used. The access level 3 enables a command for memo data access in addition to the commands available at the access level 2. The memo data access command is used to read and write destination coordinates in navigation and to read and write registered coordinates.

After the processing of step 207, step 2
At 08, the main program stored in the application CD is downloaded to the RAM of the computer 4. Then, after setting the interpretive pointer (IP) to 0 in step 209, the process proceeds to FIG. Here, the IP indicates an execution position of an instruction code in an application program, and corresponds to a so-called ordinary program counter.

FIG. 6 is a flowchart showing a core part of the interprinter which checks and executes each instruction code of the application program. In FIG. 6, in step 210, the instruction code indicated by the IP is read. Here, the instruction code is composed of a command / parameter division and a body part as shown in FIG. command/
The parameter division indicates whether the content of the body portion is a command or a parameter. For example, a parameter is represented as 0 and a command is represented as 1. In the case of a command, the body part is a command ID indicating the type of the command.
, And in the case of a parameter, contains the parameter value. The parameter value includes a direct value of the numerical value itself and an address (indirect value) of the memory when indicating a value stored in one of the memories.

After reading the instruction code, it is determined in step 211 which of the above is the command / parameter classification value. In the case of a parameter, it is checked in step 212 whether the parameter value is a code expression of a parameter value permitted to be used by the user. In step 213, if the parameter value is an indirect value, it is checked whether the address is a user-usable address. If the address is usable by the user, the parameter value is read by the address in step 214, and if the parameter value is a direct value, the direct value itself is stacked on the stack.
In the case of an indirect value, the data content of the specified address is pushed onto the stack. If it is determined in any of steps 212 and 213 that the user is not usable, the execution by the instruction code is not performed. This is to protect the system of the computer 4 from executing the application program.

On the other hand, if the instruction code is a command, the ID indicating the type of the command is checked in step 215, and the access level is checked for each command (steps 216 and 21).
9, 222). The check of the access level is to check whether or not the command is a command that can be used for the access level given to the user, based on the relationship between the access level and the usable command. OK at this access level check
If so, a parameter check for the command is performed (steps 217, 220, 223). This parameter check is to check whether the parameter is usable or not.For example, when the map display command is used to display a map, whether the size of the map is the size prepared by the system side Whether the storage location of the coordinate data indicating the current location is a place where the user can use it is determined if the current location read command, and a plurality of touch switches 11 and the remote control switch 10 are determined if the location is a key input command. A check is made to see if a key number that can be used when a number is assigned to a switch or key is indicated.
These steps 217, 220, and 223 are also provided to protect the system of the computer 4 from executing the application program. The command is executed for those determined to be OK in these checks. (Steps 218, 221,
224).

Then, in step 225, the IP is updated. Since the process of FIG. 6 is repeatedly executed, when the process reaches step 210 by updating the IP, the next IP
Is read, and the above-described processing is performed by the instruction code. Steps 226 to 230 are performed so that, when a condition (operation prohibition condition) that is restricted when this type of display system is mounted on the vehicle occurs, the restriction can be performed even when the application program is executed. It is provided in. Although not shown in the figure, such restrictions are also applied to system applications. As such operation prohibition, for example, there is a key input operation prohibition by the touch switch 11 and the remote control switch 10 during traveling. Therefore, in this case, step 226
It is determined whether or not the vehicle speed is not zero. If the vehicle speed is 0, that is, if the vehicle is stopped, the condition is not satisfied and the routine proceeds to step 227, where the operation prohibition flag is turned off. On the other hand, when the vehicle is running and the vehicle speed is not 0, the condition is satisfied and the routine proceeds to step 228, where it is determined whether or not the operation inhibition flag is on. This is to start the execution of an interrupt process described later only when the operation prohibition flag changes from off to on. Therefore, when it is determined in step 228 that the operation prohibition flag has been turned off, the operation prohibition flag is turned on in step 229, and in step 230, the IP is set to start the operation prohibition interrupt processing. To change. Here, the operation prohibition interrupt processing means that, when executing an application program, an operation prohibition interrupt processing program is first read from the application CD and registered in a predetermined area in the RAM in the computer 4 as described later. By executing the operation prohibition interrupt processing program, for example, as shown in FIG. 10, a key input disabled message is displayed on a part of the screen of the CRT 9.

In such a case, key input prohibition processing is performed by turning on the operation prohibition flag. That is, in the execution of the key input command (step 224), as shown in detail in FIG. 8, the operation prohibition flag is checked in step 250, and when the operation prohibition flag is off, steps 251 and 252 are executed. A key code is set by a normal key input process, and the key input process is performed by the application program according to the key code. When the operation prohibition flag is on, the key code is set to no key input in step 253. Therefore, the key input operation process is not performed.

Next, an application program executed by the interpreter will be described taking a golf course guide as an example. First, when the menu switch 9f is operated, the menu shown in the figure is displayed in step 107 of FIG. 4, and the interpreter program of FIG. 5 is started by selecting the CD software. In this interpreter, first, in step 201, the title of the CD software shown in the figure is displayed. When a golf course guide is selected in this display, the system ID is read in step 203, and the system ID is checked in step 205. When the check result is OK, the access level is recorded, the main program is downloaded, and the IP is set to 0. If the main program is large and cannot be downloaded all at once, only the necessary parts are downloaded each time. Thereafter, the processing of FIG. 6 which is the core of the interpreter is executed.

Therefore, the application program is I
The arithmetic processing of FIG. 6 is executed according to the instruction code of P = 0. Application program is IP = 0
The registration operation of the interrupt processing program as described above is recorded in the first part following. That is, in step 301 of FIG.
The instruction to read the interrupt processing program and the instruction to register the interrupt processing program stored at D = 0 are read for each instruction code indicated by IP, and the interrupt processing is registered through the processing of FIG. In such a case, since various checks shown in FIG. 6 have been performed, the interrupt processing program is registered while protecting the system side.

After registering this interrupt processing program,
Download the main program downloaded to AM
Are read out in instruction code units shown in FIG. 1 and processed by the interpreter shown in FIG. 6, whereby the golf course guidance program is executed as shown below.
First, in step 302, the title screen of the golf course guide shown in the figure is displayed, and then a standby state is established as to whether or not the touch switch in the touch area shown at the lower left of the title screen has been operated (step 303). Then, when the touch switch is operated to guide the golf course, the process proceeds to step 304 to indicate the acceptance of the operation by the buzzer 12.
A beep sound is generated, and a plurality of prefecture names are displayed on a menu on the CRT 9. If, for example, Aichi prefecture is designated in the menu display, a beep sound is generated by the buzzer 12 in step 306, and a list of golf courses in Aichi prefecture is displayed on the menu. Then, when a desired golf course is designated based on this menu display, the following processing is executed.

First, at step 308, a beep sound is generated from the buzzer 12 to indicate the reception of the golf course designation, and the position data (x, y) of the designated golf course is read. In such a case, golf course guidance application C
The main program downloaded from D contains position data for each golf course and is stored in the RAM, and the position data (x, y) of the designated golf course is read from the RAM.

Next, in step 309, a process for determining a scale for the position data (x, y) is executed. Specifically, it is as shown below in instruction code units. Start address of array S [1]: Address of Pn: Contents of Px: Contents of Py: P GET MAP SIZE: C Here, P represents a parameter, and C represents a command. These processes include a one-dimensional array S [1], S [2], S [3], and a five-element array indicating the storage area of the scale data of the map.
Designate the start address S [1] of S [4] and S [5],
An area for storing the read result of the number n of scale data prepared by the map data CD is designated, and the position data x and y previously read are set thereon, and the GET is performed based on these parameters. Execute the MAP SIZE command. This command reads out the number of scale data prepared by the map data CD for the area indicated by the position data (x, y), stores it in the above n address, and further stores those scale data. S [1], S [2],
S [3]... Are stored.
An execution program of this command and a command used in this system such as a command shown below is stored in the ROM in advance as a dictionary in a system basic program in this system. The scale data and the number thereof may be different depending on the type of the map data CD used.

In the next step 310, the map of the scale S [n] centered on the position data (x, y) is displayed on the CRT 9
Execute the processing to be displayed. Specifically, it is shown by the instruction code shown below. Contents of x: Contents of Py: Contents of PS [n]: P DISP MAP: C The meaning of this instruction code is to set the contents of position data x, y and to indicate by the number n of scale data. The scale data (data indicating the most detailed map scale) S [n] is set, and a DISMAPP command is executed based on these parameters. This command reads the map data from the map data CD, and stores the map of the scale S [n] with the position data (x, y) as the center.
This is to execute processing to be displayed on the RT 9.

Next, at step 311, a process of displaying a golf course mark at the center of the displayed map is executed. Specifically, it is executed by the instruction code shown below. Pallet number: Px content: Py content: P Golf course font number: P DISP FONT: C The meaning of this instruction code is the palette number (indicating the display color) and the position data x, y. Set the content and the font number indicating the golf course mark,
The DISP FONT command is executed based on these parameters. This command executes a process of displaying a golf course mark at the position of the position data (x, y) on the screen of the CRT 9.

Accordingly, by executing the above-described processing, a map centering on the selected golf course is displayed on the screen of the CRT 9 as shown in FIG. 10, and a golf course mark is displayed at the center position. Is displayed. Although the detailed process is not shown in step 311 and thereafter, various processes relating to golf course guidance are executed.
For example, processing such as traffic information to the golf course, detailed description of the selected golf course, fees, or development into a reduced view is executed.

The other steps 301 to 311 are performed in units of the instruction codes shown in steps 309 to 311.
08 is also programmed, and the processing is executed by the interpreter program shown in FIG. 6 for each instruction. Also, in the execution of the golf course guidance program, if the key input prohibition condition while the vehicle is running is satisfied, the above-described step 3 is executed in step 230 of FIG.
01 executes the interrupt processing program registered in
At the bottom of the screen of T7, the message "Key input is not allowed" is displayed, the operation prohibition flag is turned on, and the execution of the key input command in step 224 prohibits the key input operation processing. Specifically, the input of touch keys “details” and “return” displayed at the lower right of FIG. 10 is prohibited.

The application program includes a gourmet map, a hotel map,
There are various types such as diaries, and their application programs also execute processes corresponding to those programs in the same manner as described above. According to the embodiment described above, it is possible to externally install an application program that enables various applications to be displayed on a preset in-vehicle computer 4 by using information used by the computer 4. In order to protect the system of the in-vehicle computer, the application program is executed through a check function of the interpreter. In addition, the display condition in the vehicle is subject to regulation, for example, the key input operation processing prohibition while the vehicle is running is also controlled by the application. In order to cope with the display by the program, the interpreter can execute the process of prohibiting the key input operation process.

Further, although the production of this type of application program is performed by the user, there is a difference in the production technology and the like of the user, so that the user of the application program is required to properly display the application. An accessible level of information used by the computer 4 is set, and an application can be displayed according to the access level.

Further, in the navigation, from the application program side, the map data prepared on the in-vehicle side can be used and, as a result, the map can be displayed. Regardless, application display can be performed. Therefore, the map data CD 1 is not limited to a CD manufactured by a specific manufacturer, and it is possible to use map data manufactured by various manufacturers.

In the above embodiment, a CD is used to store the application program and the map data. However, another storage medium such as an IC card may be used.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.

FIG. 2 is a diagram showing a relationship between a vehicle-mounted computer and a program in an application CD.

FIG. 3 is an explanatory diagram showing an application control process.

FIG. 4 is a flowchart showing processing of a system application.

FIG. 5 is a flowchart showing processing of an interpreter;

FIG. 6 is a flowchart showing processing of an interpreter.

FIG. 7 is an explanatory diagram showing an instruction code.

FIG. 8 is a flowchart showing processing of an interpreter.

FIG. 9 is a flowchart showing a golf course guidance application program.

10 is a display explanatory diagram showing a display example displayed on a CRT by the process of FIG. 9;

FIG. 11 is a configuration diagram showing a configuration of the present invention.

[Explanation of symbols]

 Reference Signs List 1 CD for map data 4 Computer 9 CRT 9a-9f Panel switch 10 Remote control switch 11 Touch switch 13 Application CD

Claims (1)

[Claims] 1. An in-vehicle display device comprising: display means for displaying predetermined information on a vehicle; and an in-vehicle computer having a program for causing the display means to display the predetermined information. Operating means for performing an operation related to display, and prohibiting condition detecting means for detecting an operation prohibiting condition for the operation of the operating means in accordance with a driving state of the vehicle; An external storage medium having a built-in application program for performing new expandable means can be connected to the external storage medium.Furthermore, the display means performs the expandable display in connection with the execution of the application program, and When the prohibition condition detection means detects the prohibition condition, the operation means of the application program Vehicle display apparatus characterized by further having an interpreter program having a function for prohibiting processing performed in connection with the work.