JPS6258110A - Multiple display apparatus for vehicle - Google Patents

Abstract

PURPOSE:To lower the brightness of the predetermined part on a display picture without lowering visibility, by providing a display pattern wherein the display picture elements of fixed and movable display parts are lighted at least on alternate picture elements with respect to each line and each row of a matrix. CONSTITUTION:A display means having a large number of display picture elements arranged in a matrix form and a display control means generating a display pattern, wherein the display picture elements of fixed and movable display parts are lighted at least on alternate picture elements with respect to each line and each row of the matrix, on the display means are provided. Graduations 41 being the fixed display part and the indicator 42 being the movable display part moving along said graduations 41 are displayed on the water temp. meter of the central display picture of a tachometer by the lighting of the display picture elements arranged in the matrix form and a chequered pattern is formed on alternate picture elements with respect to each line and each row of the matrix. The display control means is further equipped with a display pattern altering part and alters the display pattern so that all of display picture elements in the superposed part 43 wherein the indicator 42 moves to be superposed on the graduations 41 are lighted. By this method, brightness is lowered by chequered pattern lighting and visibility is enhanced by the lighting of all picture elements.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention is provided with a display unit having a display section and installed in the instrument panel of a vehicle, and displays various information regarding the vehicle in the form of characters, figures, etc. The present invention relates to a vehicular multiple display device that displays images on a vehicle, and particularly to a vehicular multiple display device that allows partial brightness adjustment of a display screen.

(Prior Art) Conventionally, in the instrument panel of a vehicle, instead of a mechanical movable pointer, a scale drawn on the display surface has been used, for example, as described in Japanese Utility Model Application Publication No. 56-8901'2. A display device is used in which a large number of light emitting segments are arranged along a fixed display portion of the display device, and a desired analog quantity is displayed by sequentially emitting light from these light emitting segments.

Recently, using display surfaces made of EL elements, liquid crystals, etc.
2. Description of the Related Art Multiple display devices that selectively display images of desired vehicle running information, warning information, etc. on an instrument panel have been put into practical use.

In this case, since various information is displayed by switching the display screen using a changeover switch, the fixed display section as a scale on one display screen is used as a guide only when that screen is selected. The image is displayed on the display screen by a movable display unit and a large number of display pixels on the display screen.

By the way, in the above-mentioned display device, in order to improve the visibility of the display part that attracts a lot of attention from the driver, it is necessary to
It is better to lower the brightness of display parts that are less frequently noticed. However, in this type of display device, it is difficult to partially reduce the brightness of the display screen. Furthermore, even if the brightness could be lowered, there was a problem in terms of visibility of the overlapping portion of the pointer and scale.

(Object of the Invention) In view of the above-mentioned circumstances, an object of the present invention is to provide a multiple display device for a vehicle that can reduce the brightness of a predetermined portion of the display screen without impairing the visibility of the pointer. do.

(Structure of the Invention) As shown in FIG. 1, the present invention comprises a display means and a display control means. The display means has a large number of display pixels arranged in a matrix and is arranged on the instrument panel of the vehicle. Also, the display control means controls lighting of display pixels according to predetermined display data? I, a fixed display part as a scale,
The movable display section as a pointer that moves along this scale is displayed on the display means as a display pattern in which the display pixels of the fixed display section and the movable display section are lit at least every other row and column of the matrix. It is designed to cause Further, the display control means includes a display pattern changing section, and the display pattern changing section allows the "overlapping portion between the fixed display section and the movable display section that occurs due to the movement of the movable display section to be corrected." , the display pattern is changed so that all display pixels within the overlapping portion are lit.

(Effects of the Invention) With the above configuration, the display pixels of the fixed display section as a scale and the movable display section as a pointer are lit in, for example, a checkered pattern, so that the brightness of the scale and pointer can be reduced. In addition, since all display pixels only in the overlapping portion of the scale and the pointer are lit, the visibility of the pointer in the overlapping portion can be improved. Therefore, the pointer can be arranged regardless of the arrangement of the scale, and the degree of freedom in designing the display screen can be improved.

(Example) Examples of the present invention will be described in detail below with reference to the drawings.

FIG. 2 shows a driver's seat of an automobile equipped with a display unit of a multiple display device according to the present invention, where 20 is an instrument panel, 21 is a steering wheel, and 22 is a display screen installed on the instrument panel 20. The display screen 22 includes a fixed display area 23 in which predetermined information is always displayed, and a plurality of areas, for example, 3ijl, by operating a changeover switch.
Multiple display area 24 where multiple display screens are selectively displayed
It becomes more.

The three types of display contents displayed in this multiple display area 24 are, for example, "tacho center display" centered on the tachometer;
These include the ``all item display'' and the ``safety monitor display,'' which display information that is almost the same as what is displayed on the instrument panel of a normal automobile. FIG. 3 shows the display screen 24a of "octopus center display".

Referring to FIG. 3, on the display screen 24a, an engine revolution meter, ie, a tachometer 25, and a torque split indicator 26, which indicates the state of power distribution to the front and rear wheels of a four-wheel drive system, are disposed on the display screen 24a. A pressure gauge 27, a water temperature gauge 28, and a fuel gauge 29 are arranged.

FIG. 4 shows a block diagram of the electronic circuit of a multiple display device according to the invention. Reference numeral 31 denotes a controller, which is composed of a microcomputer that calculates data input from each sensor and switch according to a control program, and performs processing to control the operation of the display 32;
It has 33. The terminal ■ of the controller 31 is a power supply terminal connected to the battery 34, and the terminals ■ to ■ are input terminals for data from each sensor that outputs data regarding fuel, turbocharging pressure, engine rotation, and vehicle speed. Terminal ■ is a terminal connected to the ignition switch. Terminals 1 to 0 are input terminals connected to switches for respectively selecting the above-mentioned three types of display contents displayed in the multiple display area 24 of FIG. Furthermore, terminals ■~@ are input terminals connected to each switch for warning,
Insufficient brake fluid, poor charging, insufficient engine oil, abnormal heat generation in the exhaust pipe, insufficient cooling water, door ajar, tail light out,
It is connected to a switch that is closed in each case when the stop lamp is out and the seat belt is not fastened. The output of the controller 33 is output from the controller 31 via the interface 35 and is given to the interface 37 of the display 32 via the signal line 36. The output of this interface 37 is given to the driver 3B, and the display section 39 is driven.

In the above configuration, when the switch connected to the terminal ■ of the controller 31 in FIG. 4 is selected, the tacho center display screen 24a as shown in FIG. 3 is displayed on the multiple display area 24 in FIG. be done. For example, the water temperature gauge 28 on the display screen 24a has a scale 41, which is a fixed display part, and an X-axis (
A pointer 42 on a movable display unit that moves in the direction of the horizontal axis is displayed by lighting up a large number of display pixels arranged in a matrix. 6A, B and 7 are diagrams for explaining the lighting states of the display pixels that display the scale 41 and the pointer 42, and the pointer processing by the display switching unit of the display control means is executed according to the flowchart in FIG. 8. be done.

Referring to FIG. 6A, the pointer 42, which is a movable display section, is 1
It is shown that the image is displayed by a matrix of display pixels arranged in two rows and three columns, and the eye NJL41, which is a fixed display section, is displayed with six rows of display pixels.

The display pixels that display the scale 41 and the pointer 42 are
Every other row and column of the matrix is lit to form a checkered pattern. FIG. 6B shows a state in which the pointer 42 has moved and is superimposed on the scale 41, and all display pixels within the superimposed portion 43 are lit.

Next, the flow of pointer processing by the display pattern changing section will be explained with reference to FIGS. 7 and 8. First, in FIG. 8, this flow includes step S
Go to step 1 and read the input from the water temperature sensor. Next, in step S2, it is calculated where the read sensor value corresponds to in the display position. Next, in step S3, the pointer 42
Specify the number of the display pixel (dot) in the first row. This dot number is the row number n, as shown in FIG.
and column number m are expressed by a matrix. Next, the process proceeds to step S4, where it is determined whether or not the designated dot of the pointer 42 is superimposed on the fixed pattern, that is, the scale 41. If the result of the 0 determination is YES, the display data regarding that dot is immediately set to "1" in step S5. However, since the determination result for the first row of dots is NO, the process proceeds to step S6, and it is determined whether or not the dot is in an odd column. Since the determination result in step S6 is YES for the dot in the first row and column (2), the process proceeds to step S7, where it is determined whether or not this dot is in an even numbered row. First row! Since the determination result in step S7 is No for the dots in the column, the process proceeds to step S8, and the display data regarding those dots is set as rOJ. Next, in step Sll, the first row
Specify column dots. Then, in step S12, it is determined whether or not processing has been completed for all dots in the first row. If No, the process returns to step S6. As for the dot in the first row and column (2), the determination result in step S6 is No, so the process proceeds to step S9, where it is determined whether or not this dot is in an even numbered row. As for the dot in the first row and column (2), since the determination result in step S9 is No, the process moves to step S10 and the display data regarding the focus is set to "1".

When the processing for all the dots in the first row is completed in this way, the determination result in step 312 becomes YES, and the processing moves to step 513.

In step 313, a dot on the next line, ie, the second line in this case, is designated. Then, in step S14, it is determined whether or not the processing of all data on the pointer has been completed, that is, whether the processing regarding all the dots constituting the pointer has been completed, and if No, the process returns to step S4. Regarding the dots in the second row of FIG. 7, the determination result in step S4 is NO, and for the dots in the second row, first and column Ⅰ, the determination result in step S6 is YES. ,
The process proceeds to step 510 via step S7, and the display data for those dots is set to ``1''.As for the dot in the second row, column ①, the determination result in step S6 is No, so the processing unit Proceeding to step S8 via step S9, the display data regarding that dot is changed to "0".
”. Also, lines 4 to 9 of the guideline 42 in FIG.
As for the dots belonging to the row, the determination result in step S4 is YES, so the process immediately moves to step S5 to set the display data of those dots to "1" and display all the dots on the pointer 42 in one or more ways. / ) is completed, the determination result in step S14 is YE.
S, the process moves to step S15, and step S5
Then, in S10, only the dots whose display data is set to "1" are lit. Therefore, as shown in FIGS. 6 and 7, the dots on the part of the pointer 42 that do not overlap with the scale 41 light up every other row and column of the matrix, that is, in a checkered pattern, together with the dots that make up the scale 41. Therefore, a display with reduced brightness can be obtained. However, since all the dots included in the overlapping portion 43 of the scale 4 and the pointer 42 are illuminated, the visibility of the pointer 41 in the overlapping portion 43 can be improved.

In the above embodiment, the display pixels (dots) of the fixed display section as the scale 41 and the movable display section as the pointer are set to 1. Although every other row and column of the matrix is lit, every other row and column may be lit every second (and various other combinations are possible).

[Brief explanation of drawings]

FIG. 1 is an overall configuration diagram of the present invention, FIG. 2 is a perspective view of the driver's seat of a car equipped with a display unit of a multiple display device according to the present invention, and FIG. 3 is a screen displayed in the multiple display area of the display screen. FIG. 4 is a block diagram of the electronic circuit of the device according to the present invention, FIG. 5 is an enlarged view of a portion of FIG. 3, and FIGS. 6A, B, and 7 are scales and points. FIG. 8 is a flowchart of the pointer display process. 20-Instrument panel 21--Handle 22-Display screen 23-Fixed display area 24--Multiple display area
25-Kukometer 29~Fuel gauge 31-Controller, 32 Display 33-Controller 35
．． 37- Interface 38 - Driver 39- Display section 41- Scale
42-Guidelines 43-... Overlapping Part Patent Applicant Mazda Motor Corporation Nippon Seiki Co., Ltd. YSS Agent Patent Attorney Toshihito Yamamoto Figure 1 Figure 2 Figure 3 Figure 5

Claims (1)

[Scope of Claims] A display means having a large number of display pixels arranged in a matrix and arranged on the instrument panel of a vehicle, and controlling the lighting of the display pixels according to predetermined display data, and displaying a scale as a scale. A fixed display section and a movable display section as a pointer that moves along the scale are arranged such that display pixels of the fixed display section and the movable display section are lit at least every other row and column of the matrix. A display control means is provided that causes a display pattern to be generated on the display means, and the display control means is configured to control an overlapping portion between the fixed display portion and the movable display portion that occurs as the movable display portion moves. A multi-display device for a vehicle, comprising a display pattern changing unit that changes the display pattern so that all display pixels in the overlapping portion are lit.