JP2639034C - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is applied to a so-called navigation system, for example, in which a map and a current position of a vehicle are displayed on display means to guide the vehicle to a destination or the like. It relates to a suitable map display device. [Summary of the Invention] The present invention, for example, in a navigation system, even if the area displayed on the display means is switched from an area including the current vehicle position to an area not including the current vehicle position, the presently displayed information is displayed on the display means. A map display that allows the user to easily recognize the correspondence between the display area, which does not include the current vehicle, and the current vehicle position by displaying the traveling direction of the vehicle together with the direction of the vehicle position. Device. 2. Description of the Related Art Conventionally, a map display device of a vehicle-mounted type that displays map data, a current vehicle position, a destination, and the like on display means such as a CRT (cathode ray tube) and guides the vehicle to the destination. Is widely known. Japanese Patent Application Laid-Open No. 56-145498 discloses a traveling position display device as a device for knowing a traveling point of a vehicle without displaying map data. That is, the traveling position display device includes a signal generating means for generating an azimuth signal corresponding to the traveling direction of the vehicle, a position signal indicating information on the azimuth of the current traveling point with respect to a predetermined reference point and the linear distance, A first display unit for displaying the traveling direction of the vehicle based on the direction signal from the generating unit; and a second display unit for displaying information on the direction of the traveling point with respect to the reference point and the linear distance based on the position signal from the signal generating unit. A traveling display device, comprising: a first display unit and a second display unit, wherein the display of each of the first and second display units is performed on the same display surface. It is. In addition, when the direction of the destination can be displayed on the display map, the position of the vehicle is always detected, and when the detected position is displayed on the display means together with the map road data, for example, the direction of the destination is set to a bright point. There is also known a map display device that displays an image at an end of a display area with an arrow, a star, or the like. [Means for Solving the Problems] In order to solve the above-mentioned problems, a map display device according to the present invention has a display means for displaying a road map of an area in the vicinity of a current vehicle position and other maps not including the current vehicle position. In a map display device that displays map data of a region, the direction of the current position of the vehicle and the traveling direction of the vehicle are displayed on a map of the region not including the current vehicle position. [Operation] The map display device according to the present invention displays the traveling direction of the vehicle together with the direction of the current vehicle position , even when the display means displays an area other than the area where the current vehicle position is displayed. Therefore, it is easy to recognize the correspondence between the display area, the current vehicle position, and the traveling direction. Embodiments Hereinafter, first and second embodiments of the map display device according to the present invention will be described with reference to the drawings. FIG. 1 is a schematic block diagram of a map display device according to first and second embodiments of the present invention. In FIG. 1, a map display device includes a position detection device 1 for detecting a current position and a traveling direction of a vehicle, and a map for reproducing data such as a road map and a sign stored in a large-capacity recording medium such as an optical disk. A central processing unit 3 with the data reproducing device 2
Connected to. The central processing unit 3 is connected to the display control unit 4 and converts the input map data corresponding to the current position of the vehicle from the current position of the vehicle detected by the position detection device 1 into the map data reproducing device. 2 and the read operation processing is performed. The display control device 4 is connected to the display device 5. The display control device 4 performs processing such as rotation, enlargement, and reduction on the arithmetically processed signal input from the central processing unit 3, and inputs the processed signal to the display device 5. ing. The display device 5 displays map data input from the display device 4 on a display screen 6 such as a CRT (cathode ray tube).
On this display map data, the direction of the current position of the vehicle with respect to the display map data indicated by the destination 7 or the mark 8 or the direction of the current position of the vehicle and the traveling direction of the vehicle are displayed on the periphery of the display screen. I have. Next, the operation of the map display device of the first embodiment will be described. As the position detecting device 1, for example, a system such as a GPS (global positioning system) that detects the current absolute position and traveling direction of a vehicle using a signal transmitted from an orbiting satellite, a direction sensor, A system that detects the relative position of the vehicle using a distance sensor, a system that uses both of the above systems, and the like are considered, and the current vehicle position and the traveling direction are detected. For example, by using a plurality of methods, the current position of the vehicle is constantly detected, and this detection signal is input to the central processing unit 3 as a vehicle position detection signal. The central processing unit 3 uses the input vehicle position detection signal and the map data of the area designated to be read from the map data reproducing apparatus 2 based on the inputted vehicle position detection signal and the current position of the vehicle with respect to the designated display area. Calculate the direction of travel. Then, the calculated processing signal is input to the display control device 4. The display control device 4 processes the input calculation processing signal and inputs it to the display device 5. In the display device 5, for example, a CRT
(Cathode ray tube) or the like, the map data of the designated area and the destination 7 are displayed on the display screen 6, and the direction of the current position of the vehicle indicated by the mark 8 and the traveling direction of the vehicle are displayed at the peripheral position of the display screen 6. indicate. That is, the method of displaying the current vehicle position will be described in detail with reference to FIG. 2. The rectangular area surrounded by points a to d in FIG. 2 is displayed on the display screen 6 of the display device 5. It is assumed that the display area 20 includes a destination 21 for example. Assuming that the vehicle is currently traveling at the position indicated by the mark 22 in the direction indicated by the arrow, the central processing unit 3 calculates the vehicle travel from the current position detection signal of the vehicle of the position detection device 1 as described above. The direction and the position on the display screen 6 to be displayed are calculated. In this case, an arrow-shaped mark 2 is provided at the peripheral position of the display screen 6 displaying the display area 20 connecting the center position 23 of the display area 20 and the current vehicle position 22.
4 and the traveling direction obtained by the position detecting device 1 is also displayed in accordance with the direction of the arrow of the mark 24. Further, as another display example, assuming that the current vehicle position is traveling in the direction indicated by the arrow at the position indicated by the mark 25, the center position 23 of the display area 20 and the current vehicle position 25 are similarly connected in this case. The traveling direction is also displayed at the periphery of the display screen 6 displaying the display area 20 at the same time as an arrow-shaped mark 26. As described above, even when an area that does not include the current vehicle position is displayed, the current vehicle position is connected to the center position of the display screen as described above, and the direction of the current vehicle position and the vehicle are located at the peripheral position of the display screen. By displaying the traveling direction of the vehicle, the direction of the current position of the vehicle with respect to the display area and the traveling direction of the vehicle can be recognized at a glance. Next, a second embodiment will be described with reference to FIG. In the second embodiment, the direction of the current vehicle position with respect to the display area is displayed on the display screen. Note that the circuit configuration diagram and the operation of the circuit are the same as those of the map display device of the first embodiment, and a description thereof will be omitted. That is, the area surrounded by e to h shown in FIG. 3 indicates the display area 30 displayed on the display screen 6 of the display device 5 and includes, for example, the destination 31. Assuming that the position is indicated by the current vehicle position mark 32, as described above, the central processing unit 3 displays the display screen 6
It is calculated which position above should be displayed. In this case, the display screen 6 displaying the display area 30 connecting the center position 33 of the display screen 30 and the current vehicle position 32.
The mark 34 is displayed at the peripheral position of. Further, in the case of the position indicated by the current vehicle position mark 35, this is also located at the peripheral position of the display screen 6 displaying the display area 30 connecting the center position 33 of the display area 30 and the current vehicle position 35. This is indicated by the mark 36. As described above, even when an area that does not include the current vehicle position is displayed, by marking the peripheral position of the display screen that connects the current vehicle position and the center position of the display screen, the user's own vehicle in the display area can be marked. The direction of the position can be recognized at a glance. In the description of the first embodiment, the direction of the current vehicle position and the traveling direction of the vehicle are indicated by arrows, but this mark indicates the direction of the current vehicle position and the traveling direction of the vehicle. Anything is fine. Further, in the description of the first and second embodiments, after marking is performed at the peripheral position of the display screen connecting the current vehicle position and the center position of the display screen, the displayed destination and the current vehicle position are determined. It goes without saying that marking may be performed at the peripheral position of the display screen to be connected. Further, a display frame or the like may be provided in the display screen, and the image may be displayed in the display frame. [Effect of the Invention] The map display device according to the present invention displays the direction of the current vehicle position on the display unit and the traveling direction of the vehicle even when the display unit displays an area not including the current vehicle position. Is displayed in the display area, which does not include the current vehicle position. Can be easily recognized.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic block diagram showing map display devices according to first and second embodiments according to the present invention, and FIG. 2 is a display of the map display device according to the first embodiment. FIG. 3 is a schematic diagram for explaining the mode, and FIG. 3 is a schematic diagram for explaining the display mode of the map display device of the second embodiment. [Explanation of Signs] 1 ... Position detecting device 2 ... Map data reproducing device 3 ... Central processing unit 4 ... Display control device 5 ... Display device

Claims (1)

(1) A map display device which displays a road map of a region near a current vehicle position and map data of another region not including the current vehicle position on a display means, A map display device for displaying the direction of the current position of the vehicle and the traveling direction of the vehicle on a map of an area not including the vehicle position.