JP2014222182A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device that can present a meter with improved decorativeness.SOLUTION: A microcomputer acquires vehicle data such as travel speed and sets the angle of an indicator 46 drawn on an indicator layer on the basis of the acquired travel speed. The microcomputer uses the set angle of the indicator 46 to draw, on the indicator layer, the indicator 46 and an irradiation image 49 near the tip of the indicator 46. The microcomputer selects a display pattern corresponding to the travel speed, of the display patterns of the irradiation image 49 registered in an irradiation image registration memory, as the irradiation image 49.

Description

  The present invention relates to a display device that displays an image.

  2. Description of the Related Art Conventionally, a graphic meter that displays an automobile meter as an image on a display device such as a liquid crystal display and controls the image display is known.

  Some analog meters emit light from the tip of the pointer toward the decorative ring, which improves operability.

  There is also known an instrument that includes characters, an arc-shaped bar display unit that functions as a scale, and a pointer, and displays measurement items of a vehicle (see Patent Document 1). This instrument displays a shadow in the vicinity of the pointer.

JP2012-210828 (paragraph 0020)

  However, recently, there is a demand for presenting a meter with higher decorativeness.

  This invention is made | formed in view of the situation mentioned above, The objective is to provide the display apparatus which can show the meter with the further high decoration property.

In order to achieve the above-described object, a display device according to the present invention is characterized by the following (1) to (4).
(1) a display unit on which various information is displayed on the display surface;
A control unit for controlling display contents displayed on the display unit;
An input unit for inputting a state quantity;
With
The controller is
Drawing a pointer whose tip moves to a position corresponding to the state quantity input to the input unit and an irradiation image placed near the tip of the pointer on the first layer,
A scale, a numerical value, and an outline surrounding the scale and the numerical value for representing the position of the pointer are drawn on a second layer different from the first layer,
The display pattern of the irradiation image is changed according to a predetermined condition.
about.
(2) A display device having the configuration of (1) above,
The control unit changes the display pattern of the irradiation image according to the position of the pointer.
about.
(3) A display device configured as described in (1) or (2) above,
It has a reception unit that accepts operations,
The control unit changes the display pattern of the irradiation image according to the operation received by the reception unit.
about.
(4) A display device having any one of the constitutions (1) to (3),
The display pattern is at least one of the range, color, and luminance of the irradiated image.
about.

  According to the display device configured as described above in (1) to (4), an irradiation image having an image as if light is irradiated from the tip of the pointer is displayed by changing its display pattern.

  According to the present invention, since an irradiation image having an image as if light is irradiated from the tip of a pointer is displayed by changing its display pattern, a meter with higher decorativeness can be presented. In addition, since the pointer and the irradiation image are drawn on the same layer, layer switching or the like is not required, and display control in which the pointer and the irradiation image placed near the tip are linked is simplified.

  The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

FIG. 1 is a diagram illustrating a hardware configuration of a graphic meter 100 according to the embodiment. FIG. 2 is a diagram showing a graphic display screen 111 a displayed on the liquid crystal display 111 of the graphic meter 100. FIGS. 3A to 3E are diagrams for explaining the layer structure of the liquid crystal display 111 that generates the graphic display screen 111a. FIG. 4 is a flowchart showing a display operation procedure. FIG. 5 is a flowchart showing the pointer layer display procedure in step S4 of FIG. FIG. 6 is a diagram showing an irradiation image pattern registered in the irradiation image registration memory 102 a in the EEPROM 102. FIG. 7 is a flowchart showing the pointer layer display procedure in step S4 of the second embodiment. FIG. 8 is a diagram showing an irradiation image pattern registered in the irradiation image registration memory 102 a in the EEPROM 102.

Hereinafter, the display device according to the present embodiment will be described with reference to the drawings. The display device of this embodiment is applied to a graphic meter installed on an instrument panel in a vehicle compartment.
(First embodiment)

  FIG. 1 is a diagram illustrating a hardware configuration of the graphic meter 100 according to the first embodiment. As shown in FIG. 1, the graphic meter 100 includes a microcomputer (CPU: Central Processing Unit) 101, a read-only memory (EEPROM) 102, an interface 103, an interface 104, a CPU power supply unit 105, a graphic A controller 106, a frame memory 107, an X driver 108, a Y driver 109, an LCD (Liquid Crystal Display) power supply unit 110, and a liquid crystal display (TFT-LCD: Thin Film Transistor Liquid Crystal Display) 111 are provided.

  A microcomputer (CPU) 101 executes a program prepared in advance and performs various processes necessary for realizing the function of the graphic meter 100. For example, the microcomputer 101 (control unit) performs processing shown in a flowchart described later.

  A read-only memory (EEPROM) 102 holds the contents of a program executed by the microcomputer 101, image data such as a circular display element and meter initial image prepared in advance, fixed data, and the like. Further, the EEPROM 102 is provided with an irradiation image registration memory 102a in which a display pattern of an irradiation image described later is registered.

  The interface 103 inputs a signal (IGN +) indicating the state of the ignition switch on the vehicle side to the microcomputer 101.

  The interface 104 is used to perform communication according to a CAN (Controller Area Network) standard between the microcomputer 101 and various control devices (ECU: Electric Control Unit) on the vehicle side. Specifically, data representing various current vehicle conditions such as the current vehicle running speed, engine rotation speed, cooling water temperature, fuel amount, and whether or not the clutch is connected is transmitted from the vehicle side to the interface 104 as almost real-time data. To the microcomputer 101.

  For example, the interface 104 (input unit) receives a vehicle speed pulse signal output from a speed sensor mounted on the vehicle side every time the vehicle moves by a predetermined amount, and travel speed information representing the current travel speed value of the vehicle. (State quantity) is output to the microcomputer 101.

  The interface 104 receives a pulse signal output from an engine speed (NE) sensor that detects the engine speed, and outputs the pulse signal to the microcomputer 101 as engine speed information (state quantity). The interface 104 receives information on the fuel amount detected by the fuel sensor and outputs the information to the microcomputer 101. The interface 104 receives a signal from a water temperature sensor that detects the temperature of the cooling water in the radiator, and outputs the signal to the microcomputer 101 as cooling water temperature information.

  The interface 115 (accepting unit) is connected to a switch (for example, a steering switch or a rear seat switch) for instructing an operation related to a graphic screen displayed on the liquid crystal display 111, and accepts an operation from a user. 101.

  The CPU power supply unit 105 inputs DC power supplied from the vehicle-side plus-side power supply line (+ B) and generates a DC voltage (Vcc) necessary for the operation of the microcomputer 101. Further, a reset signal is generated as necessary, and an operation for suppressing power supply is performed in accordance with a sleep signal output from the microcomputer 101.

  The liquid crystal display 111 has a color two-dimensional display screen in which a large number of minute display cells constituted by liquid crystal devices are arranged in the X direction and the Y direction. By individually controlling the display states of a large number of minute display cells for each cell, desired information such as graphics, characters, images, etc. can be displayed on the two-dimensional display screen.

  The liquid crystal display 111 (display unit) displays a graphic display screen (display surface) 111a of a graphic meter (also simply referred to as a meter) 100 by two-dimensional screen display.

  FIG. 2 is a diagram showing a graphic display screen 111 a displayed on the liquid crystal display 111 of the graphic meter 100. The graphic display screen 111a includes a first display area (left area in the figure) 31, a second display area (center area in the figure) 32, and a third display area (different in the displayed areas). In the figure, it is roughly divided into a right region 33).

  In the first display area 31, a speedometer 41 that displays the current traveling speed of the vehicle and a fuel gauge 42 that displays the current fuel amount are displayed so as to partially overlap. The speedometer 41 includes a speed scale 45, a pointer 46, and a distance meter 44, and the pointer 46 indicates a scale position on the speed scale 45 to indicate the current traveling speed of the vehicle. Further, an irradiation image 49 having an image as if irradiated from the tip of the pointer 46 is displayed near the tip of the pointer 46.

  The fuel gauge 42 has a fuel amount scale 47 and a pointer 48, and the pointer 48 indicates a position on the fuel amount scale 47 to indicate the current remaining fuel amount.

  The second display area 32 is an area in which various images are displayed in a switchable manner. In the second display area 32, an image (vehicle image) that simulates a vehicle viewed from the upper front is normally displayed as a default image, which is a decorative image 71.

  In the third display area 33, a tachometer 51 that displays the current engine speed and a water temperature meter 52 that displays the current cooling water temperature are displayed so as to partially overlap. The tachometer 51 has a rotation speed scale 55 and a pointer 56, and the pointer 56 indicates the scale position on the rotation speed scale 55, thereby displaying the current rotation speed of the engine. Further, an irradiation image 69 having an image as if irradiated from the tip of the pointer 56 is drawn near the tip of the pointer 56.

  Further, the water temperature meter 52 displays a temperature scale 57 and a pointer 58, and the pointer 58 indicates a position on the temperature scale 57 to indicate the current cooling water temperature.

  FIGS. 3A to 3E are diagrams for explaining the layer structure of the liquid crystal display 111 that generates the graphic display screen 111a. Here, a case where the speedometer 41 shown in FIG. In the present embodiment, as shown in FIG. 3B, the liquid crystal display 111 displays the three layers of the pointer layer 111A, the instrument layer 111B, and the ODO layer 111C in a stacked state.

  On the pointer layer 111A, as shown in FIG. 3C, a pointer 46 whose tip moves to a position corresponding to the traveling speed and an irradiation image 49 placed near the tip of the pointer 46 are drawn. Since both images of the pointer 46 and the irradiation image 49 are drawn on the same layer, display control in which the pointer 46 and the irradiation image 49 that constantly change during driving are linked is simplified. On the instrument layer 111B, as shown in FIG. 3D, a scale 61, a decoration ring 62 (outer shape), and a numerical value 63 for representing the position of the pointer 46 are drawn. These images are fixed images that do not change during traveling. A distance meter (ODO / TRIP meter) 44 is drawn on the ODO layer 111C as shown in FIG. This image is an image whose numerical value is updated during traveling.

  The scanning position in the Y direction on the display screen of the liquid crystal display 111 is sequentially switched by the output of the Y driver 109. The Y driver 109 sequentially switches the scanning position in the Y direction in synchronization with the vertical synchronization signal output from the graphic controller 106.

  The X driver 108 sequentially switches the scanning position in the X direction on the display screen of the liquid crystal display 111 in synchronization with the horizontal synchronization signal output from the graphic controller 106. In addition, the X driver 108 gives RGB color image data output from the graphic controller 106 to the display cell at the scanning position to control the display contents on the screen.

  The scanning position in the Y direction on the display screen of the liquid crystal display 111 is sequentially switched by the output of the Y driver 109. The Y driver 109 sequentially switches the scanning position in the Y direction in synchronization with the vertical synchronization signal output from the graphic controller 106 for all of the pointer layer, the instrument layer, and the ODO layer.

  The X driver 108 sequentially switches the scanning position in the X direction on the display screen of the liquid crystal display 111 in synchronization with the horizontal synchronization signal output from the graphic controller 106 for all of the pointer layer, the instrument layer, and the ODO layer. . Also, the X driver 108 controls the display content on the screen by giving image data of each color of RGB output from the graphic controller 106 to the display cell at the scanning position for each pointer layer, instrument layer, and ODO layer.

  The graphic controller 106 displays various graphic elements on the screen of the liquid crystal display 111 according to various instructions input from the microcomputer 101. Actually, the microcomputer 101 or the graphic controller 106 writes the display data to the frame memory 107 that holds the display contents for each pixel of each layer and draws the graphic.

  The graphic controller 106 generates a vertical synchronization signal and a horizontal synchronization signal for two-dimensional scanning of the screen of the liquid crystal display 111, and corresponds to each layer on the frame memory 107 at a timing synchronized with these synchronization signals. The display data stored at the address to be sent is given to the liquid crystal display 111.

  The LCD power supply unit 110 receives DC power supplied from the positive power line (+ B) on the vehicle side, generates predetermined DC power required for display on the liquid crystal display 111, and the liquid crystal display 111. Etc.

  The graphic controller 106 displays various graphic elements on the screen of the liquid crystal display 111 according to various instructions input from the microcomputer 101. Actually, the microcomputer 101 or the graphic controller 106 writes the display data to the frame memory 107 that holds the display contents for each pixel and draws the graphic. In addition, a vertical synchronizing signal and a horizontal synchronizing signal for two-dimensionally scanning the screen of the liquid crystal display 111 are generated, and display data stored at a corresponding address on the frame memory 107 at a timing synchronized with these synchronizing signals. Is applied to the liquid crystal display 111.

  The LCD power supply unit 110 receives DC power supplied from the vehicle-side plus power supply line (+ B) and generates predetermined DC power required for display on the liquid crystal display 111.

  The display operation of the graphic meter 100 having the above configuration will be described. The graphic meter 100 of the present embodiment generates a graphic display screen 111a. FIG. 4 is a flowchart showing a display operation procedure. This operation program is stored in the read-only memory 102 and is executed by the microcomputer (CPU) 101.

  When the ignition switch is turned on, a DC voltage (Vcc) is supplied to the microcomputer 101. When the microcomputer 101 receives a switch operation by the driver, the microcomputer 101 starts display control of various information in the first display area 31 to the third display area 33.

  The microcomputer 101 acquires vehicle data such as travel speed, engine speed, fuel amount, cooling water temperature and the like via the interface 104 (step S1). The microcomputer 101 sets the angle of the pointer drawn on the pointer layer, that is, the angle representing the position of the pointer tip, based on the acquired vehicle data (state quantity) (step S2). Specifically, the angle of the pointer 46 drawn on the pointer layer is set from the acquired traveling speed. Further, the angle of the pointer 56 drawn on the pointer layer is set from the acquired engine speed. Here, the case where the speedometer 41 is drawn will be described as a representative, but the same applies to the case where the tachometer 51 is drawn.

  The microcomputer 101 calculates the travel distance obtained by multiplying the acquired travel speed and travel time, and sets the ODO value (cumulative travel distance) and TRIP value (travel distance) drawn on the ODO layer (step). S3).

  The microcomputer 101 draws the pointer 46 and the irradiation image 49 on the pointer layer using the angle of the pointer 46 set in step S2 (step S4). Details of the processing in step S4 will be described later.

  The microcomputer 101 draws each image of the scale 61, the decoration ring 62, and the numerical value 63, which are fixed data, stored in the EEPROM 102 on the instrument layer (step S5). The microcomputer 101 draws a distance meter (ODO / TRIP meter) 44 on the ODO layer using the ODO value and the TRIP value set in step S3 (step S6).

  When images are drawn on each layer in steps S4, S5, and S6, these images are collectively displayed on the graphic display screen 111a. Thereafter, the microcomputer 101 returns to the process of step S1.

  FIG. 5 is a flowchart showing the pointer layer display procedure in step S4. The microcomputer 101 selects the display pattern of the irradiation image 49 corresponding to the traveling speed acquired in step S1 from the display patterns of the plurality of irradiation images 49 registered in the irradiation image registration memory 102a (step S11).

  The microcomputer 101 draws the pointer 46 on the pointer layer and draws an irradiation image 49 having the display pattern selected in step S11 near the tip of the pointer 46 (step S12). Thereafter, the microcomputer 101 returns to the original process.

  FIG. 6 is a diagram showing a display pattern of the irradiation image 49 registered in the irradiation image registration memory 102 a in the EEPROM 102. A display pattern corresponding to the travel speed value registered in the irradiation image registration memory 102a can be arbitrarily set. Here, the irradiation range, color, and luminance are set as the display pattern. For example, when the traveling speed is in the range of 0 km / h or more to less than 40 km / h, the display pattern of the irradiation image 49 has a short irradiation range, a green color, and low luminance. When the traveling speed is in the range of 40 km / h or more to less than 80 km / h, the display pattern of the irradiation image 49 has a normal irradiation range, a yellow color, and a medium luminance. When the traveling speed is 80 km / h or more, the display pattern of the irradiation image 49 has a long irradiation range, a red color, and a high luminance.

  According to the display device of the first embodiment, an irradiation image having an image as if light is irradiated from the tip of the pointer is displayed by changing its display pattern, so that a meter with higher decorativeness is presented. it can. In addition, since the pointer and the irradiation image are drawn on the same layer, layer switching or the like is not required, and display control in which the pointer and the irradiation image placed near the tip are linked is simplified. In addition, since the display pattern of the irradiation image changes according to the position of the pointer, the position indicated by the pointer is roughly easy to understand.

(Second Embodiment)
The display device of the second embodiment has almost the same configuration as that of the first embodiment. The same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. Further, the display operation procedure shown in the flowchart of FIG. 4 is the same in the second embodiment.

  FIG. 7 is a flowchart showing the pointer layer display procedure in step S4 of the second embodiment. The microcomputer 101 inputs the setting value of the switch operation set by the user via the interface 115 (step S21).

  The microcomputer 101 selects the display pattern of the irradiation image 49 corresponding to the set value of the switch operation from the plurality of display patterns of the irradiation image 49 registered in the irradiation image registration memory 102a (step S22).

  The microcomputer 101 draws the pointer 46 on the pointer layer and draws an irradiation image 49 having the display pattern selected in step S22 near the tip of the pointer 46 (step S23). Thereafter, the microcomputer 101 returns to the original process.

  FIG. 8 is a diagram showing an irradiation image pattern registered in the irradiation image registration memory 102 a in the EEPROM 102. As a switch operation, the irradiation range, color, and luminance can be arbitrarily set by a combination of three switches SW1, SW2, and SW3. Specifically, when SW1 is value 1, SW2 is value 1, and SW3 is value 1, the display pattern of the irradiation image 49 has a normal irradiation range, is blue, and has low luminance.

  When SW1 is value 2, SW2 is value 3, and SW3 is value 2, the display pattern of the irradiation image 49 has a long irradiation range, green color, and medium luminance. When SW1 is value 3, SW2 is value 4, and SW3 is value 3, the display pattern of the irradiation image 49 has a short irradiation range, is red, and has high luminance.

  According to the graphic meter 100 of the second embodiment, the user can arbitrarily select the pattern of the irradiation image, and there is a degree of freedom to improve customer satisfaction.

  The present invention is not limited to the configuration of the above-described embodiment, and any configuration that can achieve the function of the configuration of the present embodiment is applicable.

  For example, in the above-described embodiment, the irradiation image is displayed on the speedometer and the tachometer. However, the present invention may be applied to other meters such as a fuel meter and a water temperature meter.

  Moreover, although the case where all of the irradiation range, the color, and the luminance are shown as the display pattern, at least one may be changed. In addition, the shape of the irradiation image is not limited thereto, and may be changed to, for example, a round shape, an oval shape, a rounded round rectangle, a rectangle, or the like. Thereby, a more highly decorative meter can be presented.

  Moreover, the case where the display pattern is selected according to the traveling speed or the set value of the switch operation is shown as the predetermined condition. However, the present invention is not limited to this. May be.

  In addition, at least a part of the graphic display screen may be configured by a touch panel that can be touch-operated by the user. In this case, the user directly touches the graphic display screen to select the pattern of the irradiation image. Is possible.

  INDUSTRIAL APPLICATION When displaying an image, this invention can show the meter with the further high decorative property, and is useful.

31 1st display area 32 2nd display area 33 3rd display area 41 Speedometer 42 Fuel gauge 43 Decoration ring 44 Distance meter 45 Speed scale 46, 48, 56, 58 Pointer 47 Fuel amount scale 49, 69 Irradiation image 51 Tachometer 52 Water Thermometer 55 Rotational Speed Scale 57 Temperature Scale 61 Scale 62 Decoration Ring 63 Numerical Value 100 Graphic Meter 101 Microcomputer 102 Read-Only Memory 102a Irradiation Image Registration Memory 103, 104, 115 Interface 105 CPU Power Supply Unit 106 Graphic Controller 107 Frame Memory 108 X driver 109 Y driver 110 LCD power supply unit 111 Liquid crystal display 111A Pointer layer 111B Instrument layer 111C ODO layer 111a Graphic display screen

Claims (4)

A display unit for displaying various information on the display surface;
A control unit for controlling display contents displayed on the display unit;
An input unit for inputting a state quantity;
With
The controller is
Drawing a pointer whose tip moves to a position corresponding to the state quantity input to the input unit and an irradiation image placed near the tip of the pointer on the first layer,
A scale, a numerical value, and an outline surrounding the scale and the numerical value for representing the position of the pointer are drawn on a second layer different from the first layer,
The display pattern of the irradiation image is changed according to a predetermined condition.
A display device characterized by that. The control unit changes the display pattern of the irradiation image according to the position of the pointer.
The display device according to claim 1. It has a reception unit that accepts operations,
The control unit changes the display pattern of the irradiation image according to the operation received by the reception unit.
The display device according to claim 1, wherein the display device is a display device. The display pattern is at least one of the range, color, and luminance of the irradiated image.
The display device according to claim 1, wherein the display device is a display device.

Images