JP2004151026A - On-vehicle information device, display method, and display monitor - Google Patents

On-vehicle information device, display method, and display monitor Download PDF

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Publication number
JP2004151026A
JP2004151026A JP2002318763A JP2002318763A JP2004151026A JP 2004151026 A JP2004151026 A JP 2004151026A JP 2002318763 A JP2002318763 A JP 2002318763A JP 2002318763 A JP2002318763 A JP 2002318763A JP 2004151026 A JP2004151026 A JP 2004151026A
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Japan
Prior art keywords
display
information
vehicle
navigation
display signal
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Pending
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JP2002318763A
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Japanese (ja)
Inventor
Hideaki Hirano
英明 平野
Original Assignee
Xanavi Informatics Corp
株式会社ザナヴィ・インフォマティクス
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Priority to JP2002318763A priority Critical patent/JP2004151026A/en
Publication of JP2004151026A publication Critical patent/JP2004151026A/en
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Abstract

An object of the present invention is to provide a display technology having high responsiveness and good visibility when displaying information on navigation and information on on-vehicle equipment on one screen.
An in-vehicle information device (1) has a function of generating image data in both a navigation unit (100) and a graphic master (200), and a function of integrating both displays is provided in the graphic master (200). The display mode that defines the display layout of the information from the devices 100 and 200 and the display ID that defines the display content of the information are transmitted and received between the devices 100 and 200 as commands. Based on the mutually recognized display mode and display ID, information to be displayed on the display monitor 300 is developed in the image memories 18 and 28 of each device. These pieces of information are analog-converted by the respective devices, then synchronized by the video switch 32, and output to the display monitor 300.
[Selection diagram] FIG.

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a technique for simultaneously displaying one screen of information on navigation and information on on-vehicle equipment.
[0002]
[Prior art]
A display transmitted from a plurality of in-vehicle devices, such as a display of an operation state of an air conditioner or a recommended route of a navigation device, as an in-vehicle information device for controlling and displaying a display signal transmitted from a plurality of in-vehicle devices. Some control and display information. In this in-vehicle information device, a drawing circuit of a navigation device having a large amount of information to be displayed such as map information controls display information transmitted from a plurality of in-vehicle devices (see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-10-275044
[0004]
[Problems to be solved by the invention]
In this in-vehicle information device, when the switch of the air conditioner is operated while the map is displayed on the entire screen, the operation screen of the air conditioner is displayed on a part of the display map. However, if a switch of the air conditioner is operated while a map is displayed on the entire screen and route guidance is performed, a load is imposed on a drawing circuit of the navigation device, and the operation screen display of the air conditioner is delayed. That is, the operation screen of the air conditioner is gradually displayed immediately after the switch of the air conditioner is operated, and visibility is poor.
[0005]
The present invention provides a display technology with high responsiveness and good visibility when displaying information related to navigation and information related to in-vehicle devices on one screen.
[0006]
[Means for Solving the Problems]
(1) A vehicle information device according to the first aspect of the present invention includes a navigation display signal output unit that generates and outputs a display signal related to navigation, and an onboard device based on signals from the onboard device other than the navigation display signal output unit. An on-vehicle device display signal output means for generating and outputting a display signal for the display device, and display signals output from the navigation display signal output means and the on-vehicle device display signal output means, respectively, for displaying them on one screen. And a display signal generating means for generating the display signal and outputting the generated display signal to the display means.
(2) According to a second aspect of the present invention, in the in-vehicle information device according to the first aspect, a display unit for performing one-screen display by a display signal output from the display signal generating unit is further provided.
(3) According to a third aspect of the present invention, in the in-vehicle information device according to the first or second aspect, the display signal generating means includes a display output from the navigation display signal output means and a display output from the on-vehicle equipment display signal output means, respectively. And outputting an analog display signal for displaying them on one screen.
(4) According to a fourth aspect of the present invention, in the in-vehicle information device according to any one of the first to third aspects, the display signal generation unit is controlled by a control circuit that controls the in-vehicle device display signal output unit. It is characterized by the following.
(5) A navigation device according to a fifth aspect of the present invention is provided with a navigation display signal output unit used in the in-vehicle information device according to any one of the first to fourth aspects.
(6) An on-vehicle device display control device according to a sixth aspect of the present invention includes an on-vehicle device display signal output unit and a display signal generation unit used in the on-vehicle information device according to any one of the first to fourth aspects. It is characterized by having.
(7) In the display method according to the seventh aspect of the present invention, a display signal for navigation is generated, a display signal for on-vehicle equipment is generated, and the information for navigation and the information for on-vehicle equipment are displayed on a display monitor by the display signals. And a display signal for displaying on the one-screen display on the in-vehicle device side, and one-screen display is performed by the display signal.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of an in-vehicle information device according to the present invention will be described with reference to FIGS. FIG. 1 is a system block diagram of an in-vehicle information device according to the present invention. The in-vehicle information device 1 includes a navigation unit 100, a graphic master 200, and a display monitor 300. The navigation unit 100 has a function of presenting information related to the traveling of the vehicle, specifically, a function of displaying a road map around the vehicle position, a function of calculating a recommended route from the departure place to the destination, and a function of calculating the recommended route. It also has a function of performing route guidance based on such information. This is a device that performs so-called navigation or road guidance. In the in-vehicle information device 1 according to the present embodiment, the navigation unit 100 has been installed since the factory shipment of the vehicle.
[0008]
The graphic master 200 has a function of integrating information on in-vehicle devices such as a television, an audio device, and an air conditioner, and information such as a vehicle state and various warnings, and is installed from the factory of the vehicle. The graphic master 200 has a function of controlling output of audio information received from the navigation unit 100 to an audio device and output of video information to a display monitor 300. As will be described in detail later, in the in-vehicle information device 1, the navigation unit 100 receives a GPS signal from the GPS satellite SA to detect the position of the vehicle, and performs various calculations on a result of the graphic master 200. Information necessary for the driver is displayed on the display monitor 300 by integrating with information from the vehicle and each device mounted on the vehicle. That is, the navigation unit 100 is provided with only the functions necessary for navigation, and the functions related to display are provided on the graphic master 200 side that controls vehicle information.
[0009]
FIG. 2 is a system block diagram showing an example of the internal configuration of the navigation unit 100. Reference numeral 11 denotes a current position detection device that detects the current position of the vehicle, and includes, for example, a direction sensor 11a that detects the traveling direction of the vehicle, a vehicle speed sensor 11b that detects the vehicle speed, a GPS sensor 11c that detects a GPS signal from a GPS satellite, and the like. Reference numeral 12 denotes a map storage memory for storing road map data, address data, and the like. The map storage memory 12 includes a DVD-ROM 13 as a recording medium storing road map data, address data, and the like, and a reading device therefor. The recording medium is not limited to a DVD-ROM, but may be a magnetic tape, a CD-ROM, or any other recording medium.
[0010]
Reference numeral 14 denotes a control circuit for controlling the entire apparatus, which comprises a microprocessor and its peripheral circuits. The control circuit 14 executes a control program stored in the ROM 16 using the RAM 15 as a work area, and performs various controls described later. Reference numeral 17 denotes an input device having various switches for inputting a destination of the vehicle and the like.
[0011]
Reference numeral 18 denotes an image memory for storing image data to be displayed on a display monitor 300 described later. This image data is created from road map drawing data, various graphic data, and the like. Reference numeral 19 denotes a digital / analog converter that converts image data, which is a digital signal, stored in the image memory 18 into an analog signal for display on the display monitor 300. The image data stored in the image memory 18 is appropriately read out and converted into an analog signal by a digital / analog converter 19. After that, as described later, a superimposing process is performed inside the graphic master 200 together with the image data on the graphic master side, and the image is displayed on the display monitor 300. The control circuit 14 also functions as an output device of a display signal to the graphic master 200.
[0012]
FIG. 3 is a system block diagram showing an example of the internal configuration of the graphic master 200. Reference numeral 24 denotes a control circuit for controlling the entire apparatus, which comprises a microprocessor and its peripheral circuits. The control circuit 24 executes a control program stored in the ROM 26 using the RAM 25 as a work area to perform various controls described later. The control circuit 24 integrates information input and output from the input / output unit 21, the vehicle information input unit 22, and the input device 23. The input / output unit 21 is connected to devices mounted on the vehicle, such as an audio device, a TV, and an air conditioner, and electronic devices having a telephone function, an e-mail function, an Internet connection function, and the like. The data is input to and output from the control circuit 24 through the control circuit 21. The vehicle information input unit 22 receives information such as a vehicle state and various warnings from the vehicle and transmits the information to the control circuit 24. The input device 23 has various switches for inputting operations of an audio device, a TV, an air conditioner, and the like, and transmits the states of these switches to the control circuit 24.
[0013]
28 is an image memory. The image data stored in the image memory 28 is read out as appropriate, and is superimposed on the image data generated by the navigation unit 100 as described later, and then displayed on the display monitor 300.
[0014]
Reference numeral 31 denotes a digital / analog converter that converts image data, which is a digital signal, stored in the image memory 28 into an analog signal for display on the display monitor 300. Reference numeral 32 denotes a video switch, which is used for superimposing an analog signal from the digital / analog converter 19 of the navigation unit 100 and an analog signal from the digital / analog converter 31 of the graphic master 200 to display the image on the image monitor 300. At this time, the content displayed on the image monitor 300 is controlled by the control circuit 24. 33 is an analog / digital converter. As described later, the analog / digital converter 33 converts each voltage difference, which is the result of comparing the analog signals output from the digital / analog converter 19 and the digital / analog converter 31 with the video switch 32, to a digital signal. Is transmitted to the control circuit 24 as information on the voltage difference.
[0015]
The in-vehicle information device 1 configured as described above performs various kinds of navigation based on the vehicle position information acquired by the current position detection device 11 and the road map data stored in the map storage memory 12. For example, a road map near the vehicle position and the vehicle position are displayed on the display monitor 300, and the driver is guided along the route obtained by the route search. As will be described later, the in-vehicle information device 1 can integrate information from the vehicle and each device mounted on the vehicle with the graphic master 200 and display information necessary for the driver on the display monitor 300.
[0016]
――― Color to be displayed ―――
In the in-vehicle information device 1 according to the present embodiment, the digital signal of the image is a signal having an 8-bit gradation for each of the three colors of RGB. In the navigation unit 100 and the graphic master 200, the digital / analog converters 19 and 31 included in the navigation unit 100 and the graphic master 200 convert the digital image signal into an analog signal and output the analog signal to the video switch 32. Even if the digital / analog converters 19 and 31 are of the same type, the digital / analog converter 19 and the digital / analog converter 31 may have slightly different input / output characteristics. Therefore, even if the input digital signal is the same, the voltage Vn of the analog signal (hereinafter referred to as Sn) output from the digital / analog converter 19 of the navigation unit 100 and the output voltage from the digital / analog converter 31 of the graphic master 200 There is a possibility that a difference may occur with the voltage Vg of the analog signal (hereinafter referred to as Sg).
[0017]
When the signal Sn and the signal Sg are superimposed and displayed on the display monitor 300 by the video switch 32 with the difference between the voltage Vn and the voltage Vg described above, the information display portion from the navigation unit 100 and the information from the graphic master 200 are displayed. The information display portion has a different color tone even in the same color, and gives the user a sense of incongruity, for example, a discontinuity occurs in the background color. Therefore, in the in-vehicle information device 1 according to the present embodiment, as described later, the difference between the voltages of Sn and Sg is detected for the three colors of RGB to correct the digital signal before the digital / analog conversion, and the display monitor 300 Color tone is corrected.
[0018]
In the following description, Sn is a general term for the R (red) analog signal Snr, the G (green) analog signal Sng, and the B (blue) analog signal Snb output from the digital / analog converter 19 of the navigation unit 100. And Sg is a general term for the R (red) analog signal Sgr, the G (green) analog signal Sgg, and the B (blue) analog signal Sgb output from the digital / analog converter 31 of the graphic master 200.
[0019]
In the following description, Vn is the voltage Vnr of the R (red) analog signal Snr, the voltage Vng of the G (green) analog signal Sng, and B (B), which are output from the digital / analog converter 19 of the navigation unit 100. It is a generic term for the voltage Vnb of the analog signal Snb (blue). Vg is the voltage Vgr of the R (red) analog signal Sgr output from the digital / analog converter 31 of the graphic master 200, the voltage Vgg of the G (green) analog signal Sgg, and the B (blue) analog signal Sgb. It is a generic term for voltage Vgb.
[0020]
FIG. 4 is a flowchart showing the operation of the above-described color tone correction program executed by the control circuit 14 of the navigation unit 100. When the accessory is turned ON (ACC ON) by the ignition key, the power of the in-vehicle information device 1 and the navigation unit 100 is turned on, and the program for performing the color tone correction process shown in FIG. 4 is started. In step S101, a digital signal of a predetermined gradation for three colors of RGB is output from the digital / analog converter 19 to the graphic master 200 as analog signals Snr, Sng, and Snb. As described later, the voltage Vn of the analog signal Sn is compared with the voltage Vg by the graphic master 200. The graphic master 200 outputs information on the voltage difference to the navigation unit 100. Step S103 is a step of waiting until information on the voltage difference is received from the graphic master 200. If an affirmative determination is made in step S103, the process proceeds to step S105, and the gain is calculated for each of the three colors RGB from the information on the voltage difference received in step S103. The calculation of the gain is performed by converting the information of the voltage difference into a gain using a predetermined conversion table. In step S107, the gain is set based on the result converted in step S105, and the program ends.
[0021]
When the gain is set by the above-described operation, the control circuit 14 corrects the digital signal of the image data developed in the image memory 18 with the above-described gain for each of the three colors of RGB. That is, the gradation of the image data of the display information developed in the image memory 18 is corrected based on the gain set in step S107. Therefore, the level (voltage Vn) of the display analog signal Sn output from the navigation unit 100 is corrected by the gain, and becomes substantially equal to the level (voltage Vg) of the display analog signal Sg of the graphic master 200.
[0022]
FIG. 5 is a flowchart showing the operation of the above-described color tone correction program executed by the control circuit 24 of the graphic master 200. When the accessory is turned ON (ACC ON) by the ignition key, the power supply of the in-vehicle information device 1 and the graphic master 200 is turned on, and the program for performing the color tone correction process shown in FIG. 5 is started. In step S201, the navigation unit 100 waits until the video switch 32 receives the analog signal Sn output in step S101. If the determination in step S201 is affirmative, the process proceeds to step S203, in which the voltage Vn of the analog signal Sn received in step S201 is compared with the voltage Vg of the analog signal Sg of the graphic master 200, and the voltage difference of each color is sent to the navigation unit 100. Send. The operation performed in step S203 is specifically as follows.
[0023]
(1) For each of the three RGB colors, three levels of 0, 128, and 255 gradations, which are predetermined on the navigation unit 100 side, for example, 8-bit gradations (256 gradations). An analog signal Sn obtained by converting the output digital signal by the digital / analog converter 19 is input to the control circuit 24 via the video switch 32.
(2) In the graphic master 200, digital signals of the same gradation as the output gradation of the navigation unit 100 are converted into analog signals Sg for the three colors of RGB by the digital / analog converter 31 and output to the video switch 32.
(3) The video switch 32 compares the received Sn voltages Vnr, Vng, Vnb with the Sg voltages Vgr, Vgg, Vgb, respectively.
(4) The video switch 32 transmits the respective voltage differences ΔVr = Vnr−Vgr, ΔVg = Vng−Vgg, ΔVb = Vnb−Vgb, which are the results of the above comparison, to the analog / digital converter 33. Hereinafter, ΔV is a general term for the respective voltage differences ΔVr, ΔVg, and ΔVb.
(5) The analog / digital converter 33 converts the received ΔV into a digital signal, and transmits the digital signal to the control circuit 24 as voltage difference information.
(6) The control circuit 24 transmits the information on the voltage difference received from the analog / digital converter 33 to the control circuit 14 of the navigation unit 100.
[0024]
In step S203, after transmitting the information of the voltage difference to the navigation unit 100 as described above, the present program is terminated.
[0025]
By the above operation, the graphic master 200 compares the level (voltage Vn) of the display analog signal Sn output from the navigation unit 100 with the level (voltage Vg) of the display analog signal Sg output from the graphic master 200. . Then, information on the voltage difference as a result of the comparison is transmitted to the navigation unit 100.
[0026]
By the operations of the navigation unit 100 and the graphic master 200 described above, the display analog signal Sn output from the navigation unit 100 is a signal obtained by converting a digital signal corrected by the gain into an analog signal. That is, the level (voltage Vn) of the display analog signal Sn output from the navigation unit 100 has been corrected based on the level (voltage Vg) of the display analog signal Sg of the graphic master 200. As a result, the color tone of the information display portion from the navigation unit 100 matches the color tone of the information display portion from the graphic master 200, and a discontinuous portion does not occur in the background color, so that the display can be performed without giving the user a sense of discomfort. .
[0027]
FIG. 6 is a diagram illustrating an example of a case where information from the navigation unit 100 and information from the graphic master 200 are simultaneously displayed on the display monitor 300. A map display portion 111 displaying the vehicle position mark 101 and the recommended route 102 for guidance, a display portion 112 indicating the name of the road on which the vehicle is currently traveling, and a reception frequency 201 of the currently received FM broadcast are displayed. The display part 210 is displayed simultaneously on one screen. Reference numeral 301 denotes a boundary between the information display portion 110 from the navigation unit 100 and the information display portion 210 from the graphic master 200. Since the background color of the information display portion 110 from the navigation unit 100 and the background color of the information display portion 210 from the graphic master 200 match with each other by the above-described operation, the boundary portion 301 cannot be visually discriminated.
[0028]
――― Display of information from each device ―――
In the in-vehicle information device 1 of the present embodiment, the following processing is performed to display information from the navigation unit 100 and information from the graphic master 200 on the display monitor 300, respectively.
[0029]
In the in-vehicle information device 1, a display mode that determines the layout in which information from the respective devices 100 and 200 is to be displayed is determined, and the display mode depends on which mode is selected. The layout of the information displayed on the monitor 300 is determined. In the in-vehicle information device 1, the following display modes are determined.
(1) A mode in which information from the navigation unit 100 is displayed on the entire screen of the display monitor 300 (FIG. 7).
(2) A mode in which information from the graphic master 200 is displayed on a lower portion of the display monitor 300, and information from the navigation unit 100 is displayed on other portions (FIG. 8).
(3) A mode in which information from the graphic master 200 is displayed on the entire screen of the display monitor 300 (FIG. 9).
[0030]
One of these display modes is selected by the operation of each of the devices 100 and 200. The display mode needs to be changed when the display contents, items, and the like are changed by the user's operation, or as a result of various operations performed by each of the devices 100 and 200 (for example, a change that occurs in the vehicle, etc.). Is notified to the user), display contents and items need to be changed.
[0031]
In the in-vehicle information device 1, in addition to the display mode described above, a display ID that defines what information is to be displayed is determined. For example, the number is XXX in the case of a map display, the number XX in the case of a name as it is traveling, and the number XX in the case of a radio broadcast frequency being received.
[0032]
In the in-vehicle information device 1, each process described below is executed by the navigation unit 100 and the graphic master 200 using the display mode and the display ID described above, so that the information from the navigation unit 100 and the The information is displayed on the display monitor 300, respectively.
[0033]
FIG. 10 is a flowchart showing the operation of a program executed by the control circuit 14 of the navigation unit 100 to display information from the navigation unit 100 and information from the graphic master 200 on the display monitor 300, respectively. When the program for performing the color tone correction process shown in FIG. 4 ends, the program starts. In step S121, it is determined whether or not the display mode needs to be changed. If an affirmative determination is made in step S121, the process proceeds to step S123, where the display mode to be changed and the display ID are recognized, and the process proceeds to step S125. In step S125, the display mode and the display ID recognized in step S123 are transmitted as commands to the graphic master 200, and the process proceeds to step S131.
[0034]
If a negative determination is made in step S121, the process proceeds to step S127, and it is determined whether a command has been received from the graphic master 200. If an affirmative determination is made in step S127, the process proceeds to step S129, and the display mode and the display ID are recognized from the command received in step S127, and the process proceeds to step S131. If a negative determination is made in step S127, the process returns to step S121.
[0035]
When the process proceeds from step S125 or step S129 to step S131, information to be displayed on the display monitor 300 is developed in the image memory 18 according to the display mode and the display ID recognized in step S123 or step S129. When the image data is expanded in the image memory 18, the image data of the information to be displayed is corrected in color tone as described with reference to FIGS. The content of the image memory 18 is converted into an analog signal and is always output to the video switch 32 of the graphic master 200. In step S133, the process waits until the development in the image memory 18 in step S131 is completed. If an affirmative determination is made in step S133, the process proceeds to step S135, in which the completion of the development to the image memory 18 is transmitted to the graphic master 200, and the process returns to step S121.
[0036]
FIG. 11 is a flowchart showing the operation of a program executed by the control circuit 24 of the graphic master 200 to display information from the navigation unit 100 and information from the graphic master 200 on the display monitor 300, respectively. When the program for performing the color tone correction processing shown in FIG. 5 ends, the program starts. In step S221, it is determined whether or not the display mode needs to be changed. If step S221 is affirmatively determined, the process proceeds to step S223, where the display mode and the display ID to be changed are recognized, and the process proceeds to step S225. In step S225, the display mode and the display ID recognized in step S223 are transmitted as commands to the navigation unit 100, and the process proceeds to step S231.
[0037]
If a negative determination is made in step S221, the process proceeds to step S227, and it is determined whether a command has been received from the navigation unit 100. When step S227 is affirmatively determined, the process proceeds to step S229, and the display mode and the display ID are recognized from the command received in step S127, and the process proceeds to step S231. If a negative determination is made in step S227, the process returns to step S221.
[0038]
When the process proceeds from step S225 or step S229 to step S231, information to be displayed on the display monitor 300 is developed in the image memory 28 according to the display mode and the display ID recognized in step S223 or step S229, and the process proceeds to step S233. In step S233, the process waits until the development to the image memory 28 in step S231 is completed. If the determination in step S233 is affirmative, the process proceeds to step S235, and waits until the completion signal transmitted by the navigation unit 100 is received in step S135 in FIG. If the determination in step S235 is affirmative, the process proceeds to step S237, where the display analog signal Sn from the navigation unit 100 and the display analog signal Sg of the graphic master 200 are synchronized by the video switch 32.
[0039]
Synchronization of the analog signals Sn and Sg in step S237 is performed as follows. For example, as shown in FIG. 8, in a mode in which information from the graphic master 200 is displayed on a lower portion of the display monitor 300 and information from the navigation unit 100 is displayed on other portions, The analog signal to be displayed on the display monitor 300 in synchronization with the horizontal synchronization signal is switched to Sn or Sg. That is, switching from Sn to Sg is performed by the horizontal synchronization signal corresponding to the boundary portion 301 in FIG. In step S239, the analog signals Sn and Sg synchronized in step S237 are output to the display monitor 300, and the process returns to step S221.
[0040]
By the above-described operation, the in-vehicle information device 1 can display the information from the navigation unit 100 and the information from the graphic master 200 on the display monitor 300, respectively. For example, when the user instructs to display navigation on the entire screen of the display monitor 300, as shown in FIG. 7, the display monitor 300 displays the vehicle position mark 101 and the recommended route 102 for guidance. Is displayed, and a display portion 112 indicating the name of the road on which the vehicle is currently traveling is displayed. Here, for example, when a switch related to the air conditioner is operated, information 210 from the graphic master 200 is displayed on a lower part of the display monitor 300 as shown in FIG. Is displayed. FIG. 8 is an example of a screen that displays information 110 from the navigation unit 100 and also shows a reception frequency 201 of the FM broadcast currently being received and an operation state 202 of the air conditioner on a display portion 210 below the display monitor 300. is there. When a setting switch (not shown) relating to the in-vehicle information device 1 is operated, the information 220 from the graphic master 200 is displayed on the entire screen of the display monitor 300 as shown in FIG. FIG. 9 is an example of a screen for performing various settings of the in-vehicle information device 1. Also, when there is an input signal via the vehicle information input unit 22 such as when the remaining fuel of the vehicle is low, the information 220 from the graphic master 200 is displayed on the display monitor 300. In this case, the information 220 from the graphic master 200 is displayed on a part of the display monitor 300 or displayed on the entire screen according to the type of signal input through the vehicle information input unit 22 and the degree of urgency. be able to.
[0041]
The in-vehicle information device 1 described above has the following functions and effects.
(1) A function of generating image data is provided in both the navigation unit 100 and the graphic master 200, and a function of integrating the display of both is provided in the graphic master 200 side. Thus, even if the display mode of the display monitor 300 is switched, the image displayed on the display monitor 300 has high responsiveness and good visibility, so that the user does not feel uncomfortable.
(2) The level (voltage Vn) of the display analog signal Sn output from the navigation unit 100 is corrected based on the level (voltage Vg) of the display analog signal Sg of the graphic master 200. As a result, the color tone of the information display portion from the navigation unit 100 matches the color tone of the information display portion from the graphic master 200, and a discontinuous portion does not occur in the background color, so that the display can be performed without giving the user a sense of discomfort. . Furthermore, even if the navigation unit 100 is updated to a higher-performance one, the color tone of the information display part from the new navigation unit and the color tone of the information display part from the graphic master 200 can be matched.
(3) The navigation unit 100 has only the functions necessary for navigation, and the display-related functions are provided on the graphic master 200 side that controls vehicle information. This facilitates integration of information from both devices 100 and 200 to be displayed on the display monitor 300, and realizes a low-cost and high-speed display switching device. Furthermore, when the navigation unit 100 is updated to a higher function, the function related to integration of display information from other devices does not need to be updated. That is, when the navigation unit is replaced for each unit, only the navigation unit needs to be replaced. When rewriting software, it is not necessary to change the software on the graphic master 200 side. It can be updated simply and inexpensively.
(4) The above-described effects are obtained for both the design maker of the navigation unit 100 and the purchaser (user) of the vehicle. That is, the design maker of the navigation unit 100 can design and produce a new navigation unit having the above-described effects, and the user can update the navigation unit to a navigation unit having the above-described effects.
[0042]
――― Modifications ―――
(1) In the above description, the navigation unit 100 is installed when the vehicle is shipped from the factory. However, as a dealer optional item, the vehicle purchaser can select whether or not to add the vehicle when purchasing the vehicle. You may.
(2) In the above description, the color tone correction described with reference to FIGS. 4 to 6 is executed when the accessory is turned ON (ACC ON) by the ignition key, but the present invention is not limited to this. For example, the above-described color tone correction may be performed at regular intervals during traveling, or the above-described color tone correction may be performed according to a temperature change in the vehicle. Accordingly, it is possible to cope with a change in the input / output characteristics of the digital / analog converter due to a temperature change in the vehicle.
(3) In the above description, the graphic master 200 compares the level (voltage Vg) of the display analog signal Sn output from the navigation unit 100 with the level (voltage Vg) of the display analog signal Sg of the graphic master 200. However, the present invention is not limited to this. A device for performing color tone correction may be provided to a device other than the graphic master 200, or another device provided independently may have this function.
(4) In the above description, the color tone correction of the image displayed on the display monitor 300 has been described.
[0043]
In the above embodiment, for example, the navigation display signal output means is constituted by the navigation unit 100, the in-vehicle device display signal output means is constituted by the graphic master 200, the display means is constituted by the display monitor 300, and the display signal generation means Is composed of the control circuit 24 and the video switch 32, but the present invention is not limited to this. Furthermore, the present invention is not limited to the device configuration in the above-described embodiment at all, as long as the characteristic functions of the present invention are not impaired.
[0044]
【The invention's effect】
The in-vehicle information device according to the present invention has a function of generating a display signal for both the navigation display signal output means and the on-vehicle device display signal output means, and a function of generating a display signal by integrating both display signals. Have. Thus, the image displayed on the display means has high responsiveness and good visibility, and does not give the user an uncomfortable feeling.
[Brief description of the drawings]
FIG. 1 is a system block diagram of an in-vehicle information device according to the present invention.
FIG. 2 is a system block diagram of a navigation unit 100 of the in-vehicle information device 1 shown in FIG.
FIG. 3 is a system block diagram of a graphic master 200 of the in-vehicle information device 1 shown in FIG.
FIG. 4 is a flowchart showing an operation of a program executed by the navigation unit 100.
FIG. 5 is a flowchart showing an operation of a program executed by the graphic master 200.
FIG. 6 is a diagram showing a display example of a display monitor 300.
FIG. 7 is a diagram showing a display example of a display monitor 300.
FIG. 8 is a diagram showing a display example of a display monitor 300.
FIG. 9 is a diagram showing a display example of a display monitor 300.
FIG. 10 is a flowchart showing an operation of a program executed by the navigation unit 100.
FIG. 11 is a flowchart showing an operation of a program executed by the graphic master 200.
[Explanation of symbols]
1 In-vehicle information device 11 Current location detection device
14 Control circuit 18 Image memory
24 control circuit 25 RAM
28 Image memory 32 Video switch
33 analog / digital converter 100 navigation unit
200 Graphic master 300 Display monitor

Claims (7)

  1. Navigation display signal output means for generating and outputting a display signal for navigation,
    An in-vehicle device display signal output unit that generates and outputs a display signal for the in-vehicle device based on a signal from the in-vehicle device other than the navigation display signal output unit,
    Display signal generation means for controlling display signals respectively output from the navigation display signal output means and the on-vehicle equipment display signal output means, generating display signals for displaying them on one screen, and outputting the display signals to the display means An in-vehicle information device comprising:
  2. The in-vehicle information device according to claim 1,
    An on-vehicle information device further comprising a display unit that performs the one-screen display based on a display signal output from the display signal generation unit.
  3. The in-vehicle information device according to claim 1 or 2,
    The display signal generating means controls display analog signals respectively output from the navigation display signal output means and the in-vehicle device display signal output means, and outputs an analog display signal for displaying them on one screen. An in-vehicle information device characterized by the following.
  4. An in-vehicle information device according to any one of claims 1 to 3,
    The in-vehicle information device, wherein the display signal generation means is controlled by a control circuit that controls the on-vehicle device display signal output means.
  5. A navigation device comprising a navigation display signal output unit used in the vehicle information device according to any one of claims 1 to 4.
  6. An in-vehicle device display control device, comprising: an in-vehicle device display signal output unit and a display signal generation unit used in the in-vehicle information device according to claim 1.
  7. Generate a display signal for navigation,
    Generate display signals for in-vehicle devices,
    On the display device, a display signal for displaying information on navigation and information on the in-vehicle device on the display monitor on one screen by the display signals is generated on the in-vehicle device side,
    A display method, wherein the one-screen display is performed by the display signal.
JP2002318763A 2002-10-31 2002-10-31 On-vehicle information device, display method, and display monitor Pending JP2004151026A (en)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002318763A JP2004151026A (en) 2002-10-31 2002-10-31 On-vehicle information device, display method, and display monitor

Publications (1)

Publication Number Publication Date
JP2004151026A true JP2004151026A (en) 2004-05-27

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007091013A (en) * 2005-09-28 2007-04-12 Denso Corp Display device and program
US7880602B2 (en) 2007-03-01 2011-02-01 Fujitsu Ten Limited Image display control apparatus
US7966123B2 (en) 2005-09-28 2011-06-21 Denso Corporation Display device and method for vehicle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007091013A (en) * 2005-09-28 2007-04-12 Denso Corp Display device and program
US7966123B2 (en) 2005-09-28 2011-06-21 Denso Corporation Display device and method for vehicle
US7880602B2 (en) 2007-03-01 2011-02-01 Fujitsu Ten Limited Image display control apparatus

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