JPS5826652A - Vehicle's display - Google Patents

Abstract

PURPOSE:To surely inform the driver of a warning by switching the display of information on vehicle's running condition to the display of warning entry in response to detection of the warning and returning the display to the original one by operating a warning confirming switch as well as displaying a warning entry on a dead space. CONSTITUTION:When an abnormal state of a vehicle occurs to develop any one detection signal of various sensors 2, a micro-computer 1 issues an address signal 20 to trigger a timer circuit 50 and simultaneously the data is read out from a corresponding page memory field of a buffer memory 3 via a buffer circuit 32 to display a warning entry on CRT12. If a switch 40 is depressed within a certain period fixed in the timer circuit 50, CRT12 is switched to display an engine speed and the warning entry. If the switch 40 is not depressed within the period, a speaker 54 generates an alarm sound via a sound generator 52 within the period to inform the driver. The warning may be surely recognized in this way.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display device for a vehicle that displays images of vehicle running information and images of various warning items on a cathode ray tube display screen.

Conventionally, this type of vehicle display device displays images of vehicle driving information such as speed display, engine rotation speed display, trip/odd display, etc. at a predetermined position on a cathode ray tube display screen. Information essential to the running of the vehicle, such as the speed display, is displayed in an easily visible position in the center of the display screen using a sufficient display space.

Additionally, various alarm items such as engine cooling water temperature, engine oil, and remaining fuel level are now displayed in the display space not used for displaying images of the vehicle driving information mentioned above, so they are inevitably displayed around the display screen. It will be displayed in the section.

By the way, there are many types of alarm items compared to vehicle running information, so there is a limit to the display space for each alarm item that can be secured around the display screen, and compared to images of vehicle running information, there is a limit to the display space for each alarm item. The smaller size is easier to match with the displayed image.

Therefore, even if the image of the warning item is displayed, if the driver is concentrating on driving, the warning item may be overlooked and it takes time to notice the display. .

The present invention has been made in view of the above six points, and the vehicle is running tR.
In order to properly display images of obituary items using the display screen that displays the image of the book, when an alarm is detected,
The image of the vehicle running information is switched to the image of the nine detected alarm items, and when the KV good news confirmation switch is not operated after switching, the screen is returned to the image of the vehicle running information, and the empty space on the screen is , until it returns to normal condition.
An image of the detected alarm item is displayed.

The present invention will be explained below based on the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention. First, to explain the configuration, it is an IFi microcomputer,
A central processing unit (CPU) with calculation and judgment functions
), random access memory (RA) for data storage
M), read-only memory (ROM) for storing processing programs, and input/output interface (INFO).
↑, 0UTPUT) It is composed of 舒. Further, various sensors 2 are connected to the microcomputer 1, such as an engine rotation speed sensor 2m, a water temperature sensor/2B1, a speed sensor 2C, and a brake fluid wave sensor 2D. 3 is a buffer memory, each page memory area has an address corresponding to the address on the display screen, 3A (O page)
, 3B (1 page), 3C (2 pages), 3D (3 pages), 3E (4 pages), 3F (5 pages), 3G (6 pages)
page), 3H (7 pages), and each page memory area KFi stores each image data shown in FIGS. 2 to 8.

That is, the image of the engine tachometer as vehicle running information is stored in the three O page memory areas shown in FIG.
1.2.3 page memory area 3B in Figures 3 and 4.5,
3C and 3D each have warnings such as "overheat z, slow down!" due to a rise in engine cooling water temperature, "exhaust temperature rise! Slow down!" due to a rise in the temperature of the three-photocatalyst, and "insufficient brake fluid" due to a decrease in brake oil. doing!"
The alarm items of 6th, 7th, and 8rA are stored, and
#6゜In each of the 7-page memory areas 3F, 3G, and 3H, there are 3.4
．． Alarm items corresponding to Fig. 5 are stored.

Similarly, page 4 memory area 3EKId does not store anything.

Referring again to FIG. 1, 4 is a selector circuit that selects the buffer memory 3 into a display mode (hereinafter referred to as "display mode") and a writing or reading mode from microcomputer 1 (hereinafter referred to as rcptr mode). This is a circuit that switches at a predetermined cycle. This switching cycle is such that the horizontal sweep time of the CRT display 12 is set as the "display mode", and the blanking time, which is the horizontal and vertical blanking time, is set as the "rCPU mode".

Display address counter that sequentially specifies addresses to be displayed in 5Fi display mode, 6ij
The display control circuit controls the X and Y addresses using the horizontal and vertical synchronizing signals generated by the tinting generator 7 and the tining pulses generated by the clock generating circuit 81C according to the minimum pixel.

Reference numeral 9 designates a 77 register disk for converting image data t7 outputted in parallel from the buffer memory 3 into real data, a 10Fi high frequency modulation circuit, 11 an image receiving circuit, and 12 a CR'l' display. On the other hand, it is a cursor address color that specifies the address to be written or read by the microcomputer IK in the buffer memory 3 in the 13ijCpu mode. Here, the cursor refers to the position of an address that can be written to or read from by the microcomputer 1. 14,15t:
The t-gate circuit is used for reading by the microcomputer 1. In such a display control device, in the display mode, data written in the buffer memory 3 is sequentially sent to the shift register 9 in accordance with high-speed address designation by the display address counter 5, converted into real data, and displayed on the CRT display 12. On the other hand, in the CPU mode, by specifying the X and Y addresses of the cursor from the microcomputer 1, the data contained in the address is written to a specified address in the memory 3. can be read out to the microcomputer 1.

A signal line 20 for transmitting a page designation signal from the microcomputer 1 is connected to a display address counter 13 via an interrupt display device 30. This signal line 20e''t is a type of address bus for transmitting a page designation signal for the buffer memory 3, ie, address information for the buffer memory 3.

Consisting of an interrupt display device 301j, a buffer circuit 32 and a latch circuit 34, the buffer circuit 32 has a signal line 20 input from the microcomputer 1, and the latch circuit 34 has a switch 40 that is operated when the passenger confirms an alarm. The output line from is connected.

Furthermore, when the latch circuit 34 and the switch 40 are turned on, the internal state is set to @1'' upon application of the power supply +We, and the most significant bit of the address information stored in the buffer circuit 32 is set to 1'K. On the other hand, when the data (address information) in the buffer circuit 32 runs out, the output causes the latch circuit 341j-0'' to be set to ν, and furthermore, the data (address information) is set to the latch circuit 341j-0'' through the buffer circuit 32ij signal line 20. When address information is sent from the microcomputer 1, this information is stored and simultaneously sent to the display address counter 13 via the signal line 20.

The display address color 13tf has a stack function, so when address information for page designation is sent from the buffer circuit 32, the address information held until then is stacked in the register in the counter. When the offer address information from the buffer circuit 32 becomes strong, the previous address information stacked in the register is returned to the counter.

Here, for the topmost pits "0" and "1" of the address information from the buffer circuit 32, each page memory area 3B to 3H (excluding 3g) of the buffer memory 3 is shown in the following table-1.
It corresponds as follows.

Table-1 Next, the action will be explained.

Now, if the image of the engine revolution needle (tachometer) shown in FIG. ing.

In addition, it processes the signals from the two microcomputer IFi engine rotational speed sensors and uses the 0-page memory area 3 of the buffer memory 3 in accordance with changes in the rotational speed in CPU mode.
After writing down the contents of A, the change in engine speed is displayed on the screen.

For example, if the temperature of the engine cooling water suddenly rises, the microcomputer IFi water temperature sensor 2B
It is determined that there is overheating based on the signal from
The interrupt display device 32 sends to the signal line 20 the address information of the 1-page memo area 3B of the buffer memory 3 in which the image of the overheat report shown in FIG. 3 is stored.

30 interrupt display devices, enter this address information@,
At the same time as storing address information in the buffer circuit 32, this address information is sent to the display address counter 5 via the signal line 20.

When the address information from the buffer circuit 32 is input to the display address counter 5, the address information of the 0 page memory area 3A held until then is stacked in the register in the counter, and the contents of the counter 1lt1
The address information is rewritten to the page memory area 3B. Therefore, upon receiving the address information from the display address counter 5, the image data stored in the page memory area 3B of the buffer memory 301 is transferred to the shift register 9.
The signal is sequentially outputted to the high frequency modulation circuit 10 and the image receiving circuit 11 of the television receiver, and the alarm items shown in FIG. 3 are displayed on the entire screen of the CRT display 12.

After switching to the image of the alarm item in this way, when the passenger confirms the display of the alarm item and presses the switch 40, the latch circuit of the interrupt display device 30 is activated by turning on the switch 40 and applying the power +Me. 34 is 1'', the 1 page memory area 3 stored in the buffer 7 circuit 32
The most significant bit of the address information of B changes from @O# to @1'', and therefore the address information is changed to address information indicating the 5 page memory area 3F and sent to the display address counter 5 (see Table 1).

In response to this address information, the contents of the display address counter 5 change to address information indicating the 5th page memory area 3F, and an image of a warning item indicating overheating is displayed below the engine tachometer display as shown in Figure f4E6. It's so cool.

Similarly, in this case, the address information of the three people in the O page memory area is already stacked in the register of the display address counter 5, so no stacking occurs.

Also, when the display is switched to the one shown in Fig. 6, the microcomputer IFi processes the signal from the engine speed sensor 2A and reads the contents of the buffer memory 305 page memory area 3F in accordance with changes in the engine speed in CPU mode. 1 and the change in engine speed is displayed.

On the other hand, when the engine coolant temperature returns to normal, the address information of the 1-page memory area 3B is no longer sent from the microcomputer 1 to the interrupt display device 30, so the buffer circuit 32 sends the address information to the display address counter 5. The address information of the 5th page memory area 3F is sent out.
Finally, the latch circuit 34 is also reset to "0m".

Therefore, the address information of the three people in the O page memory area that had been stacked in the register of the display address counter 5 is returned to the counter, and the CRT of the TV receiver
The display 12 now displays an image of only the engine tachometer shown in FIG. 2.

FIG. 9 is a block diagram showing another embodiment of the present invention.

In this embodiment, if the occupant does not operate a switch to confirm the alarm even after a certain period of time has elapsed since the alarm item was displayed, a sound *newsletter is output.
be a sign.

゛ Its configuration includes a timer circuit 50 that is activated by subaddress information output from the microcomputer 1 to the signal line 20 in response to detection signals from various sensors 2. !
-% A sound generator 52 operated by a timer circuit 50 that produces an output after a certain period of time and a speaker 54 are newly added. Since the other configurations are the same as those in the embodiment shown in FIG. 1, they are designated by the same reference numerals and their description will be omitted.

゛ Next, to explain the operation, an abnormality has now occurred in the vehicle, and the
When the 4-chrome computer 1 outputs address information to the signal line 20, indicating 9, the timer circuit 50 is activated in response to this address information.

At the same time, the address information is also given to the d-buffer end circuit 32, and data is read out from the corresponding page memory area of the buffer memory 3 in the same manner as shown in the embodiment of FIG. 1, and an alarm item is displayed on the CRT display 12. be done.

In this state, if the switch 40 is not pressed even after the time set in the timer circuit 50 has elapsed, the timer circuit 50 produces an output when the set time has elapsed, drives the sound generator 52, and outputs the sound from the speaker 54. Outputs an audible alarm to notify passengers that an alarm has occurred. When the occupant confirms all alarms and presses the switch 40 due to this acoustic alarm, the timer circuit 50 is reset, the operation of the acoustic generator is stopped, the acoustic alarm stops sounding, and at the same time, as shown in FIG. As in the embodiment described above, the display screen of the CRT display 12 is switched to display an engine tachometer and alarm items.

In addition, the switch 4
When 0 is pressed, the timer circuit 50 is reset, so no audible alarm is output, and the display screen of the CRT display shows the difference between the engine rotation needle and the alarm item, similar to the embodiment shown in FIG. Switch to display.

FIG. 10 is a block diagram showing another embodiment of the present invention. In this embodiment, when the false alarm confirmation switch 40 is pressed and displayed within the set time, the display screen is flickered. It is characterized by being made to do.

In other words, a display blinking circuit 60 is provided in place of the output f1 sound generator and speaker of the timer circuit 50, and the on/off signal of this display blinking circuit 60 is transmitted to the image receiving circuit I of the television receiver.
I decided to output HC.

Therefore, the timer is activated by the address information corresponding to the alarm detection from the microcomputer, and the timer circuit 50
If the switch 40 is not pressed within the set time, the display blinking circuit 60 is activated and outputs an on/off signal to the image receiving circuit 11, which displays the image of the e-report item.
The display screen of the RT display 12 is made to flicker.

Incidentally, in each of the above embodiments, a television receiver is used as the display device, but in place of the television receiver, LCB, EL, and E
A dot matrix panel of C, P/P may also be used.

In some cases, the display method is the H1 raster scan method or the JL display method on the TV receiver, but the buffer memory 3 is divided into multiple memory areas, and the display image stored in each memory area is It is the same in that it switches and displays.

As has been explained hereafter, according to the present invention, the configuration is such that when a warning is detected, the image of the vehicle running information is switched to the image of the warning item, and when the switch for confirming the warning is operated after this switching, In addition to restoring the image of the vehicle running information, the image of the warning item is also displayed in the empty space of the nuclear image, so when an abnormality in the heavy vehicle is detected, the display screen switches to the image of the warning item, and the warning item is displayed. Items are displayed using the entire first page, so
The crew can easily know that the warning has been issued,
Appropriate measures can be taken depending on the content of the warning.

Also, when you check the W warning display and press the switch, the warning items will be displayed along with the heavy vehicle information, so the display of the warning items will almost never interfere with vehicle running information. Since a plurality of alarm items can be displayed using the same display screen, the installation space can be significantly reduced compared to the case where an alarm display is provided for each alarm item.

Furthermore, in the present invention, 1. If the #news confirmation switch is not pressed even after a certain period of time has passed since the father's news item is displayed, the sound news or the display screen will be turned on by pressing L. It is also possible to obtain the effect that the alarm can be recognized reliably and easily.

[Brief explanation of the drawing]

Figure 1 shows a block diagram 2.3 showing an embodiment of the present invention.
, 4, 5, 6.7 and 8d are diagrams showing display images according to the present invention, and Figures 9 and 10 are block diagrams showing other embodiments of the present invention. 1...Microco/Pupu 2...Various sensors 2A
...Engine speed sensor 2B...Water temperature sensor (radiator) 2C...Speed sensor 2D...Brake fluid level sensor 3...Buffer memory 4...
Selector circuit 5...display address counter 6
... Display control circuit 7 ... Timing generator 8 ... Clock generation circuit 9 ... Shift register 1
0...High frequency modulation circuit 11... Image receiving circuit 12...
・CRT display 13...Cursor address counter 14.15...Gate circuit 20...Signal line 30...
- Interrupt display device 32... Buffer completion circuit 34...
Latch circuit 40... Switch 50... Tights circuit 52-... Sound generator 54... Speaker
60- Display flashing circuit patent applicant Nissan Motor Co., Ltd. Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8

Claims (1)

[Claims] Display means for displaying an image of vehicle running information on a display screen;
an alarm display means for switching and displaying an image of the vehicle running information to an image of the alarm item when a warning is detected; and after the alarm display means switches to displaying the alarm item;
When a switch operation for confirming the alarm is performed, the device switches to a screen displaying an image of the vehicle running information, and also displays an image of the detected alarm item in an empty space on the screen until the normal state is restored. A vehicle display device characterized by: