JP2007155552A - Car navigation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To compatibly perform real time route guidance for a driver and an operation of a car navigation function such as non-route guidance display for a non-driver, destination setting, circumference retrieval without requiring a high-speed CPU and high-performance rendering processing section. <P>SOLUTION: A display device 200 comprises a CPU 210, an operation section 220, and drawing processing sections 230 and 240 corresponding to two display screens 250A and 250B. Processing related to the navigation is performed in a navigation device 100, rendering processing for the driver and rendering processing for the non-driver are completely executed by the rendering processing sections 230 and 240 of the display device 200, respectively. The navigation device 100 and the display device 200 take charge of respective functions. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a car navigation system, and more particularly, to a car navigation system including a display device that can be seen by a driver and a display device that can be seen by a passenger (non-driver) other than the driver.

  Conventionally, a car navigation device mounted on a vehicle is known. In a conventional car navigation system, the vehicle position is always detected in real time, and a map of the vehicle position and the vicinity of the vehicle position is displayed on the display screen. Also, if you set the destination by entering information such as an address or telephone number from the operation unit or by directly specifying a point from the map, the route from the vehicle position to the destination will be searched and displayed. The route guidance to the destination is performed in real time according to the traveling of the host vehicle during traveling. Further, it is also possible to display information on nearby stores and parking lots at a certain point on the map, or display detailed information on stores and vacant information on parking lots.

In such a car navigation system, all the functions of the car navigation can be executed while the vehicle is stopped, but the functions that can be executed to avoid the danger of the driver operating the car navigation system while driving. Is limited. However, it is convenient if a non-driver, for example, a person in the front passenger seat, can perform operations for searching around, displaying surrounding information, and setting a destination. In Patent Document 1, a viewing angle control shutter is disposed on the front surface of a liquid crystal display panel which is a display screen, and is driven to control an image seen from the driver's seat side and the passenger seat side. A technique is described that allows a non-driver sitting down to perform operations such as destination setting and search.
JP 2005-55611 A

  However, such a conventional two-screen car navigation device has the following problems because the load on the control unit of the car navigation device is large for two-screen display.

  For example, if you want to be able to perform operations such as searching around, displaying surrounding information, and setting destinations from a non-driver while performing route guidance for the driver on one display screen, The processing load on the CPU of the apparatus is very large. If a specially designed CPU with high processing capability is used, the above parallel processing is possible. However, such a CPU is expensive and over-spec is applicable to a general-purpose car navigation device that does not perform two-screen display. In addition, design changes are necessary. For this reason, there are problems in terms of cost and versatility.

  When the CPU installed in the current navigation device is used, the load on the current position detection, route guidance, and drawing processing performed by the drawing processing unit is heavy. There is a problem that processing that needs to be performed is delayed, and there is a problem that route guidance has to be stopped once when searching for surroundings or changing destinations. In addition, it is necessary to determine whether the driver or non-driver has operated, and then determine whether the vehicle is stopped or traveling, and further processing for the operation has to be performed, resulting in a complicated algorithm. .

  The present invention has been made in view of the above points, and without requiring a high-speed CPU or a high-performance drawing processing unit, real-time route guidance for a driver, non-route guidance display for a non-driver, and An object of the present invention is to provide a car navigation system capable of both the operation of a car navigation function such as destination setting and surrounding search.

  The car navigation system of the present invention is a car navigation system including a display device and a navigation device having a control unit that executes a processing program for realizing a navigation function, wherein the navigation device includes sensor information and route information. A route guidance information creating means for creating route guidance information using a database; and a first drawing processing means for performing a drawing process for navigation including a map based on the created route guidance information, the display device comprising: Operation means for operating destination setting or search, operation by the operation means, and related information generating means for generating related information related to route guidance based on information from the navigation device, and the generated related information Second drawing processing means for performing drawing processing for converting related information including a menu screen into a figure A configuration with a.

  The display device may comprise a plurality of display devices for drivers and non-drivers. For example, the display device for drivers displays information created by the first drawing processing means. Then, the display device for the non-driver displays the related information created by the second drawing processing means.

  The display device includes a display panel capable of switching between a display that can be viewed from one of the first and second directions and a display that can be viewed from both the first and second directions. For example, information generated by the first drawing processing unit is displayed as display information in the first direction, and the related information generated by the second drawing processing unit is displayed as the second information. It is displayed as display information of the direction.

  Furthermore, the display device may include a determination unit that determines whether an operation by the operation unit is performed by a driver or a non-driver, and the operation is not performed by the determination unit. When it is determined that the user is a driver, the search or setting of the related information may be permitted.

  According to the present invention, an algorithm for an operation from the operation unit can be simplified in the control unit of the navigation apparatus, and a high-speed CPU and a high-performance drawing processing unit are not required, thereby reducing costs. In addition, since the existing navigation device can be used as it is, there is an effect of excellent versatility.

  Since various operations or destination settings can be performed at any time on the display device, non-drivers sitting in the front passenger seat and rear seat can freely play DVDs and TVs while providing real-time route guidance to the driver while the car is running. You can watch and operate car navigation functions such as destination setting and neighborhood search.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment 1)
FIG. 1 is a block diagram showing the configuration of the car navigation system according to Embodiment 1 of the present invention. This embodiment is an example applied to a display device installed on a dashboard as a display device constituting a car navigation system.

  In FIG. 1, 100 is a navigation device, and 200 is a display device that is installed on a dashboard between a driver seat and a passenger seat and displays car navigation information. The navigation device 100 and the display device 200 are connected via an external bus 160 such as a flexible cable.

  The navigation device 100 includes a CPU 110, a navigation (navigation) drawing processing unit 120, a camera input unit 130, a sensor 140 that detects various information related to car navigation, and a storage unit 150 including a semiconductor memory, HDD, magneto-optical disk, and the like. Composed.

  The CPU 110 controls the navigation device 100 as a whole, and calculates a current position detection unit 111 that detects the current position from the output of the GPS (Global Positioning System) receiver 141, and calculates an optimal route that connects the input departure point and destination. The navigation program indicated by the route search unit 112 and the route guidance control unit 113 is executed.

  The CPU 110 receives sensor information such as the GPS receiver 141, the gyro 142, and the vehicle speed pulse sensor 143 in real time from the sensor 140, and detects the position of the host vehicle from the GPS, travel distance, and the like by the current position detection unit 111. Further, the route search unit 112 searches the route from the current position to the destination using the map information DB 151 and the route information DB 152 of the storage unit 150, and performs route guidance by the route guidance control unit 113. For destination setting, the point information DB 153 in the storage unit 150 is used. The navigation drawing processing unit 120 causes the capture unit 122 to draw a 2D / 3D map, draw a landmark using the landmark DB 154 of the storage unit 150, and capture an image input from the camera input unit 130.

  The navigation drawing processing unit 120 includes a drawing unit 121 and a capture unit 122 that captures an image captured by the camera input unit 130, and these are configured by a dedicated circuit for performing navigation drawing processing at high speed.

  The camera input unit 130 is composed of a CCD (Charge Coupled Device) (area type solid-state imaging device) camera or the like, and inputs target image information.

  The sensor 140 includes a GPS receiver 141, a gyro 142, and a vehicle speed pulse sensor 143 that detects the vehicle speed. The GPS receiver 141 receives a radio wave of position information from a GPS satellite via a GPS antenna (not shown), and calculates two parameters of latitude / longitude from the received position information and current position information. The CPU 110 can determine the movement state using the GPS receiver 141, the gyro 142, the vehicle speed pulse sensor 143, the acceleration sensor, and the like.

  The storage unit 150 includes a map information database (DB) 151 made up of a DVD (Digital Versatile Disk) or the like for recording map information, a route information DB 152, a point information DB 153, and a landmark information DB 154. These databases are stored in an external storage device such as a DVD or a hard disk drive (HDD).

  The display device 200 is provided in, for example, a dashboard, and performs operations and displays such as display of navigation information for the driver's seat, search of surroundings from non-drivers of the passenger seat, display of surrounding information, and destination setting.

  The display apparatus 200 includes a CPU 210, an operation unit 220, a drawing processing unit 230, a drawing processing unit 240, a display panel 250 that displays a display screen 250A and a display screen 250B. Although not shown, a loudspeaker is provided. In addition, operation by voice input is also possible by providing a microphone for inputting voice, a voice signal processing unit that digitally processes a reception signal and a voice signal input from the microphone, and a voice recognition unit.

  The operation unit 220 includes a touch panel 221 capable of touch input, a hard key 222 for performing input and mode switching, a remote control device 223, and the like, and destination setting and surrounding search can be performed by these operations.

  The drawing processing unit 230 performs drawing processing of the display screen 250A by the drawing unit 231 and the drawing processing unit 240 performs drawing processing of the display screen 250B by the drawing unit 241.

  The display panel 250 includes an LCD display having a dot matrix configuration in which a viewing angle control shutter (not shown) and a touch input touch panel 221 are stacked, drivers, and the like. For example, the route guidance display is displayed on the display screen 250A, and the destination setting and the peripheral search display are displayed on the display screen 250B. Moreover, the display illumination (backlight) is turned on or blinked as necessary. In the viewing angle control shutter, a polarizing plate, a microprism arranged on the polarizing plate, and a shutter cell made of an electrode made of ITO or the like are arranged in a region corresponding to one pixel. Any one of the third to third drive signals is selectively driven to display the same image on the driver's seat side or the passenger seat side, and further on the driver seat side and the passenger seat side. The touch panel 221 is provided on the surface of the display panel 250, and the effective part of the touch panel 221 is equivalent to the entire display part of the display panel 250. By touching the touch panel 221, a user operation can be performed.

  Note that a TV tuner, a video camera, or the like may be connected to display the video on the display device 200, or a CD player or the like may be connected to output playback sound from a loudspeaker.

  FIG. 2 is a diagram schematically showing a display screen of the display panel 250 of the display device 200.

  The display panel 250 includes the above-described viewing angle control shutter, and can display the same image on the driver seat side or the passenger seat side, and further on the driver seat side and the passenger seat side.

  When performing separate display on the driver side and the non-driver side, drawing is performed at half the resolution of the original image display, as shown in the display screen 250A and the display screen 250B in FIG. In FIG. 2, the display screen 250 </ b> A and the display screen 250 </ b> B are shown as being separated at a half of the display panel 250, but this is a schematic diagram for explanation, and the actual display panel 250 </ b> Separate images are displayed on the right side (driver's seat side) and left side (passenger seat side) (however, the horizontal resolution is halved). For example, when the original image is 800 × 480 pixels, it is 400 × 480 pixels in the case of separate display screens.

  In addition, when the same display is performed on the display device 200 from the driver side and the non-driver side, the display screen 250A and the display screen 250B are displayed in half, thereby rendering at the full resolution of the display device 200. It can be performed. Display examples will be described later with reference to FIGS.

  FIG. 3 is a diagram illustrating a configuration of the drawing processing unit 230 of the display device 200, and is a detailed block diagram of the drawing unit 231. Since the drawing processing unit 240 that performs the drawing process on the display screen 250A and the drawing processing unit 230 that performs the drawing process on the display screen 250B have the same configuration, the drawing processing unit 230 is shown as a representative.

  In FIG. 3, the drawing processing unit 230 includes a parameter input unit 232 that creates a parameter in accordance with a graphics drawing command from the CPU 210, a pixel generation unit 233 that generates a figure to be drawn according to the created parameter, A drawing output unit 234 that outputs drawing data is provided.

  The graphic drawing data from the CPU 210 is input to the pixel generation unit 233 via the parameter input unit 232. The parameter input unit 232 creates parameters according to a graphic drawing command from the CPU 210. The pixel generation unit 233 generates a graphic to be drawn from the graphic drawing data according to the created parameters. The drawing output unit 234 outputs the generated drawing data to the display screen 250A.

  Specifically, the drawing processing unit 230 is based on a VRAM having a display area corresponding to the display screen 250A of the display panel 250 and a storage area for storing drawing data and bitmap data, and a command from the CPU 210. And a graphic LSI that performs display on the display panel 250 by drawing in the display area of the VRAM. The graphic LSI is an element specialized for drawing processing, and also performs access control for the VRAM. On the other hand, the CPU 210 includes a ROM that stores a control program, a font used for image display, a bitmap (BMP) file, and the like. The CPU 210 controls the operation of each part of the apparatus, a ROM, and the like according to the program in the ROM. Perform access control. The bitmap file in the ROM is used for displaying a large number of screens on the display panel 250. The ROM also stores arrangement information for transferring the bitmap file data to the storage area of the VRAM for arrangement. The data of each bitmap file to be transferred is stored at an address according to this arrangement information.

  Hereinafter, the operation of the car navigation system configured as described above will be described. First, operations of the navigation device 100 and the display device 200 will be described.

[Operation of Navigation Device 100]
The CPU 110 of the navigation device 100 receives sensor information such as the GPS receiver 141, the gyro 142, and the vehicle speed pulse sensor 143 from the sensor 140 in real time, and detects the current vehicle position by the current position detection unit 111. Further, the route search unit 112 searches the route from the current position to the destination using the map information DB 151 and the route information DB 152 of the storage unit 150, and the route guidance control unit 113 performs route guidance. For destination setting, the point information DB 153 in the storage unit 150 is used. In the navigation drawing processing unit 120, 2D / 3D map drawing, landmark drawing using the landmark DB 154 of the storage unit 150, and capturing of an image input from the camera input unit 130 are performed by the capture unit 122.

[Operation of Display Device 200]
The display device 200 is a car navigation display device for a driver provided on a dashboard and a display device for a non-driver sitting in a passenger seat.

  The CPU 210 of the display device 200 does not accept an operation input to the system while the opening screen is displayed, and accepts the operation input after shifting to the normal screen display. The operation input is performed via the touch panel 221 or the like according to the display contents of various normal screens.

  While the display device 200 is stopped, the display device 200 can watch a DVD or a television, and can set a destination and search for surroundings by operating the operation unit 220 such as the touch panel 221, the hard key 222, and the remote control device 223. While the vehicle is running, the CPU 210 limits operations that are considered dangerous during driving and operations that lead to cancellation of route guidance. In addition, while displaying the map of the location of the vehicle and its surroundings in real time, it draws information up to the next intersection necessary for route guidance, information on traffic jams around the road, road information such as one-way traffic, and information on frequent accidents Drawing is performed by the drawing units 231 and 241 of the processing units 230 and 240 and displayed on the display screens 250 </ b> A and 250 </ b> B of the display panel 250.

  FIG. 4 is a schematic diagram for explaining a display screen of the display device 200 of the car navigation system. FIG. 5 is a diagram showing a display screen 250A viewed from the driver side during traveling, and FIG. 6 is a diagram showing a display screen 250B viewed from the non-driver.

  In this car navigation system, the navigation device 100 causes the display device 200 to display a display screen 250A for the driver when one display screen is viewed from the driver side, and a display screen for the non-driver when viewed from the passenger seat side. The screen is controlled so as to be visible at 250B. Here, whether the vehicle is a driver or a non-driver is determined based on whether the vehicle is running or stopped. Further, after determining whether the driver is a non-driver, the operation unit 220 accepts an operation from the non-driver side, and the drawing processing units 230 and 240 perform drawing on the respective display screens.

  As shown in FIG. 5, a display screen 250A is displayed on the driver side during traveling. Reference numeral 267 is the position of the vehicle, and reference numeral 268 is route navigation. Further, it is possible to display a display screen similar to that on the driver side on the non-driver side by the operation unit 220. In this case, the horizontal resolution is double that of one-sided display.

  As shown in FIG. 6, a display screen 250B is displayed on the non-driver side. On the non-driver's side, it is possible to watch a DVD or a TV regardless of whether the vehicle is stopped or traveling, or to set a destination or search for surroundings by operating the operation unit 220. Further, peripheral shop information required by the non-driver, parking lot availability information, and the like are drawn by the drawing processing unit 240 and displayed on the display screen 250B. In FIG. 6, stores 251 to 254 and parking lots 255 and 256 are drawn. Reference numeral 257 denotes the position of the vehicle, and reference numeral 258 denotes scheduled travel route information that is linked to the driver's route navigation 268 (see FIG. 5). In addition, when the vehicle is stopped, the operation unit 220 can display the same display screen on the driver side as on the non-driver side. In this case, the horizontal resolution is double that of one-sided display.

  Next, the operation of the car navigation system will be described.

  The CPU 110 of the navigation device 100 calculates the vehicle position and the course based on the vehicle position information from the GPS receiver 141, the vehicle orientation information from the gyro 142, and the vehicle speed information from the vehicle speed pulse sensor 143. In the route search unit 112, the route information DB 152 is used to search for a route connecting the vehicle position and the target position, and the route guidance control unit 113 controls the drawing processing units 230 and 240 along the route. The drawing processing unit 230 performs drawing using the map information DB 151 and the landmark information DB 154. In addition, the drawing processing unit 240 draws information on a store or a parking lot by a peripheral search using the point information DB 153, or captures an image of the camera input unit 130 by the capture unit 122.

  Here, the drawing processing unit 230 of the display device 200 only needs to display to the driver. Therefore, functions such as destination setting and surrounding search are restricted during traveling, and the navigation device 100 is particularly useful. Additional information regarding route guidance that is required to be urgent and immediate, such as distance display to an intersection, traffic jam display, and accident occurrence point display, is drawn in real time on the route guidance information and displayed on the display screen 250A (see FIG. 5).

  On the other hand, the drawing processing unit 240 of the display device 200 only needs to perform display for non-drivers. Therefore, it is not necessary to determine whether the vehicle is stopped or traveling, and the operation on the operation unit 220 is always executed. In particular, the peripheral map information from the navigation device 100 is subjected to a drawing process of information about the location of the vehicle and the route to the destination, such as nearby store information and parking lot information, and displays it on the display screen 250B (see FIG. 6). ).

  As described above, according to the first embodiment, the display device 200 includes the CPU 210, the operation unit 220, and the drawing processing units 230 and 240 corresponding to the two display screens 250A and 250B. The drawing process for the driver and the drawing process for the non-driver can be completed and executed by the drawing processing units 230 and 240 of the display device 200, respectively. That is, the navigation system 100 provides route guidance and the display device 200 provides other functions, while the navigation device 100 and the display device 200 share functions, and the touch panel 221, hard keys 222, Processing by an operation by the remote control device 223 is completed in the display device 200.

  The function sharing between the navigation device 100 and the display device 200 will be further described. According to the present embodiment, the navigation drawing processing unit 120 provided in the navigation device 100 performs drawing for navigation such as a map, and the drawing processing units 230 and 240 provided in the display device 200 perform drawing such as a menu screen. Share. In addition, the navigation drawing processing unit 120 included in the navigation device 100 displays roads and the like, and the drawing processing units 230 and 240 included in the display device 200 provide separate information (store information) customized for the respective display screens 250A and 250B. , Parking information, etc.). Due to this function sharing, drawing processing such as destination setting by the operation unit 220 is transferred to the display device 200, so that when viewed from the CPU 110 of the navigation device 100, the algorithm for the operation from the operation unit can be simplified. it can. For the same reason, a non-driver sitting in the passenger seat or the rear seat while providing real-time route guidance to the driver while the car is driving, without requiring a high-speed CPU or a high-performance drawing processor Can freely watch DVDs and TVs, and operate car navigation functions such as destination setting and peripheral search.

(Embodiment 2)
FIG. 7 is a block diagram showing a configuration of the car navigation system according to Embodiment 2 of the present invention. In the description of the present embodiment, the same components as those in FIG.

  In FIG. 7, 100 is a navigation device, 300 is installed in a dashboard between the driver's seat and the passenger seat, and displays a car navigation information, and 400 is provided in a place that does not enter the driver's view, for example, the rear seat. It is a display device for non-drivers. The navigation device 100, the display device 300, and the display device 400 are connected via external buses 170 and 180 such as flexible cables, respectively.

  The display device 300 is provided in the dashboard and performs operations and displays such as navigation information display for the driver's seat, peripheral search from the non-driver in the passenger seat, peripheral information display, destination setting, and the like. The display device 300 includes a CPU 310, an operation unit 220, a drawing processing unit 230, and a display panel 350 that displays a display screen 350A.

  The display panel 350 is composed of an LCD display having a dot matrix structure in which a touch panel 221 capable of touch input is stacked, drivers, and the like. The touch panel 221 is provided on the surface of the display panel 350, and the effective part of the touch panel 221 is equivalent to the entire display part of the display panel 350. By touching the touch panel 221, a user operation can be performed.

  The display device 300 is a display device for a driver provided in the dashboard, and operations that are considered dangerous during driving and operations that lead to cancellation of route guidance are restricted by the CPU 310 while the vehicle is running. In addition, while displaying the map of the location of the vehicle and its surroundings in real time, it draws information up to the next intersection necessary for route guidance, information on traffic jams around the road, road information such as one-way traffic, and information on frequent accidents The image is drawn by the drawing unit 231 of the processing unit 230 and displayed on the display screen 350A. An example of the display screen 350A displayed on the display device 300 for the driver during traveling is shown in FIG.

  On the other hand, the display device 400 is a display device for a non-driver installed in a rear seat, and includes a CPU 410, an operation unit 220, a drawing processing unit 240, and a display panel 450 that displays a display screen 450B. . Although not shown, a loudspeaker is provided. As in the case of the display panel 350, the display panel 450 includes an LCD display having a dot matrix structure in which a touch panel 221 capable of touch input is stacked, drivers, and the like.

  The display device 400 is provided in a place that does not enter the driver's view, for example, a rear seat, and is a display device for a non-driver. The display device 400 can watch a DVD or a TV regardless of whether the vehicle is stopped or traveling, or can set a destination or search for a surrounding area by operating the operation unit 220. In addition, the nearby store information required by the non-driver, parking space availability information, and the like are drawn by the drawing processing unit 240 and displayed on the display screen 450B. An example of the display screen 450B displayed on the non-driver's display device 400 is shown in FIG.

  Hereinafter, the operation of the car navigation system configured as described above will be described.

  The CPU 110 of the navigation device 100 calculates the vehicle position and the course from the vehicle position information from the GPS receiver 141, the vehicle direction information from the gyro 142, and the vehicle speed information from the vehicle speed pulse sensor 143. The route search unit 112 uses the route information DB 152 to search for a route connecting the vehicle position and the target position, and the route guidance control unit 113 performs the following guidance control along the route. The navigation drawing processing unit 120 performs drawing using the map information DB 151 and the landmark information DB 154. In addition, information on stores and parking lots is drawn using the point information DB 153 in the peripheral search, and an image of the camera input unit 130 is captured by the capture unit 122.

  Since the display device 300 on the driver side only needs to display to the driver, functions such as destination setting and surrounding search are restricted during traveling, and the route guidance information from the navigation device 100 is crossed. Additional information related to real-time route guidance such as distance display, traffic congestion display, and accident occurrence point display is drawn by the drawing unit 231 of the drawing processing unit 230 and displayed on the display screen 350A of the display panel 350.

  Since the display device 400 provided in the rear seat only needs to display only for non-drivers, it is not necessary to determine whether the vehicle is stopped or traveling, and an operation on the operation unit 220 can be always performed. it can. In addition, the drawing unit 241 of the drawing processing unit 240 is based on information from the navigation device 100, surrounding map information, surrounding store information, parking lot information, point information around the route to the vehicle position and destination. Are drawn and displayed on the display screen 450B of the display panel 450.

  According to the second embodiment, the navigation-related processing can be completed in the navigation device 100, the processing for the driver can be completed in the display device 300, and the processing for the non-driver can be completed in the display device 400. Even while the vehicle is traveling, a non-driver can perform car navigation operations such as destination search and surrounding guidance without disturbing real-time navigation to the driver.

(Embodiment 3)
FIG. 8 is a block diagram showing the configuration of the car navigation system according to Embodiment 3 of the present invention. The same components as those in FIG. 7 are denoted by the same reference numerals, and description of overlapping portions is omitted.

  In FIG. 8, 100 is a navigation device, 300 is installed on the dashboard between the driver's seat and the passenger seat, and displays a car navigation information, and 400 is provided in a place that does not enter the driver's view, for example, the rear seat. It is a display device for non-drivers.

  The navigation device 100, the display device 300, and the display device 400 are connected via external buses 170 and 180 such as flexible cables, and the display device 300 and the display device 400 are connected via a dedicated cable 190, respectively.

  The display device 300 and the display device 400 have a communication function and transmit / receive data to / from each other via the dedicated cable 190. Any bidirectional communication function may be used, but high-speed data that can transfer information such as a destination set on the display device 400 and image data such as DVD playback to the display device 300 (and vice versa) at high speed. Those with communication are preferred. Further, as a simpler communication function, an Ethernet (registered trademark) system that enables high-speed data communication using a pair of signal lines can be used.

  Since the display device 300 and the display device 400 can transmit and receive data to and from each other by a communication function, the following operation can be performed in addition to the operation of the second embodiment.

  The new destination set by the non-driver in the display device 400 while the vehicle is traveling can be sent to the display device 300 via the dedicated cable 190 by the communication function between the display device 300 and the display device 400. In this case, in the display device 300, only the destination is changed while continuing the route guidance. Therefore, when introducing a new destination to the route guidance, it is necessary to stop or temporarily interrupt the route guidance. Disappear. As a result, the destination can be changed without stopping or temporarily interrupting the route guidance and without burdening the driver without any trouble.

(Embodiment 4)
FIG. 9 is a block diagram showing a configuration of a car navigation system according to Embodiment 4 of the present invention. The same components as those in FIG. 8 are denoted by the same reference numerals, and description of overlapping portions is omitted.

  In FIG. 9, the car navigation system further includes a display device 500 for non-drivers. The display device 500 has a communication function. The display device 500 and the navigation device 100 are connected via an external bus 510 such as a flexible cable, and the display device 500, the display device 300, and the display device 400 are connected via a dedicated cable 520. Each is connected.

  There may be three or more display devices 400 and 500 for non-drivers according to the number of non-drivers. With this configuration, each non-driver can have the display devices 400 and 500 to freely search for surrounding facilities.

(Embodiment 5)
FIG. 10 is a block diagram showing the configuration of the car navigation system according to Embodiment 5 of the present invention. The same components as those in FIG. 9 are denoted by the same reference numerals, and description of overlapping portions is omitted.

  In FIG. 10, the display device 300 for the driver and the display devices 400 and 500 for the non-driver include storage units 360, 460, and 560 to which external storage media such as CDs and SD cards can be mounted, respectively. . In the storage units 360, 460, and 560, a database is constructed based on various types of information downloaded through media such as CDs and SD cards, and communications such as the Internet. Since the display devices 300, 400, and 500 have databases in the respective storage units 360, 460, and 560, accident-prone locations and traffic information that drivers need, store information and sightseeing information that non-drivers need, The display can be customized in the display devices 300, 400, and 500 individually.

  The above description is an illustration of a preferred embodiment of the present invention, and the scope of the present invention is not limited to this. For example, although an example in which the viewing angle control shutter is applied is described as the display device in the first embodiment, a display panel of a similar type, for example, a parallax barrier type may be used. Moreover, the display examples of FIGS. 4 to 6 are merely examples, and any display may be used.

  In the present embodiment, the name “car navigation system” is used. However, this is for convenience of explanation, and it is a matter of course that a car navigation device, a display device, or the like may be used.

  Furthermore, the types, numbers, connection methods, and the like of each circuit unit, for example, the drawing processing unit, that constitute the car navigation device and the display device are not limited to the above-described embodiments.

  The car navigation system according to the present invention has display devices for drivers and non-drivers, so that even when the vehicle is running, the non-drivers can reach the destination without disturbing real-time navigation to the drivers. Car navigation operations such as searching and surrounding guidance can be performed, which is useful for safety and convenience. Further, it can be applied to applications such as products having a plurality of display devices including a display unit and an operation unit.

The block diagram which shows the structure of the car navigation system which concerns on Embodiment 1 of this invention. The figure which shows typically the display screen of the display panel of the display apparatus of the car navigation system which concerns on the said Embodiment 1. FIG. The figure which shows the structure of the drawing process part of the description display apparatus of the car navigation system which concerns on the said Embodiment 1. FIG. The schematic diagram explaining the display screen of the display apparatus of the car navigation system which concerns on the said Embodiment 1. FIG. The figure which shows the display screen seen from the driver | operator side at the time of driving | running | working of the car navigation system which concerns on the said Embodiment 1. FIG. The figure which shows the display screen seen from the non-driver | operator of the car navigation system which concerns on the said Embodiment 1. FIG. The block diagram which shows the structure of the car navigation system which concerns on Embodiment 2 of this invention. Block diagram showing a configuration of a car navigation system according to Embodiment 3 of the present invention Block diagram showing a configuration of a car navigation system according to Embodiment 4 of the present invention. Block diagram showing the configuration of a car navigation system according to Embodiment 5 of the present invention

Explanation of symbols

100 Navigation device 160 External bus 110, 210, 310, 410 CPU
DESCRIPTION OF SYMBOLS 111 Present position detection part 112 Route search part 113 Route guidance control part 120 Navigation (navigation) drawing process part 121 Drawing part 122 Capture part 130 Camera input part 140 Sensor 141 GPS receiver 142 Gyro 143 Vehicle speed pulse sensor 150 Storage part 151 Map information DB
152 Route information DB
153 point information DB
154 Landmark DB
160, 170, 180, 510 External bus 190, 520 Dedicated cable 200, 300, 400, 500 Display device 220 Operation unit 230, 240 Drawing processing unit 231, 241 Drawing unit 250, 350, 450 Display panel

Claims (9)

A car navigation system comprising a display device and a navigation device having a control unit for executing a processing program for realizing a navigation function,
The navigation device
Route guidance information creating means for creating route guidance information using sensor information and a route information database;
First drawing processing means for performing drawing processing for navigation including a map based on the generated route guidance information,
The display device
Operation means for operating destination setting or search;
Related information creating means for creating related information related to route guidance based on the operation by the operating means and information from the navigation device;
A car navigation system comprising: second drawing processing means for performing drawing processing for drawing related information including a menu screen into a figure based on the generated related information.   The car navigation system according to claim 1, wherein the route guidance information includes own vehicle position information and map information around the vehicle position information.   The related information is at least one of intersection information necessary for route guidance, traffic jam information, road information, accident frequent occurrence point information, store information, and parking lot information. Car navigation system.   The car navigation system according to claim 1, wherein the display device includes a plurality of display devices for drivers and non-drivers. The display device for the driver displays information created by the first drawing processing means,
The car navigation system according to claim 4, wherein the display device for the non-driver displays the related information created by the second drawing processing unit.   The display device includes a display panel capable of switching between a display that can be viewed from one of the first and second directions and a display that can be viewed from both the first and second directions. The car navigation system according to any one of claims 1, 4, and 5. Displaying the information created by the first drawing processing means as display information in the first direction;
The car navigation system according to claim 6, wherein the related information created by the second drawing processing means is displayed as display information in the second direction.   The car navigation system according to claim 1, wherein the display device further includes a determination unit that determines whether the operation by the operation unit is performed by a driver or a non-driver. 9. The car navigation system according to claim 8, wherein when the determination unit determines that the operation is a non-driver, the search or setting of the related information is permitted.

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