JPS61194471A - Fuel residue alarm display by onboard navigator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to a method for displaying a fuel remaining amount alarm in an on-vehicle navigation device.

BACKGROUND ART Recently, in-vehicle navigation devices have been proposed that provide more detailed information to vehicle occupants to facilitate vehicle driving.

Summary of the Invention The present invention provides an in-vehicle navigation device that automatically introduces secondary music information (additional information) useful to the driver at gas stations near the vehicle's current location when the remaining fuel level falls below a predetermined level. The purpose is to

In order to achieve the above object, the in-vehicle navigation device of the present invention corresponds to the current position and remaining fuel level of the vehicle from a storage device that includes additional information such as accompanying facilities according to the content of road information and local information. The system employs a configuration in which additional information is extracted and displayed on a two-dimensional screen together with the district screen.

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

FIG. 1 shows an in-vehicle navigation device according to the present invention, and a display device 1 is comprised of a two-dimensional screen display such as a CR, T display, or a liquid crystal display, and is, for example, installed in front of a passenger in a vehicle interior. installed in or near the instrument panel.

The display device 1 is controlled by a display control circuit 2 comprising, for example, a character generator, and displays a screen such as a road map. The current position measuring device 3 is, for example, a GPS (Glo
Direct data (address) such as y, b, longitude and latitude corresponding to the current position of the vehicle are supplied to a central processing circuit 4 comprising, for example, a microprocessor. The input device 5 consists of, for example, a so-called keyboard, and supplies positional data of the destination point to which the passenger desires to go to the central processing circuit 4 in accordance with the passenger's operations. The memory circuit 6 is, for example, a solid-state memory such as so-called R, A, M, etc., or a program that specifies the operating procedure of the central processing circuit 4 or a program that defines the operation procedure of the central processing circuit 4.
Stores data to be processed by. The recording medium player 7 acting as a storage means is, for example, a so-called CD.
It consists of a player, and although its responsiveness is not very good, it functions as a storage means for storing a large amount of data. As this storage means, a TESO recording medium such as a so-called VTR may be used.

Note that the current location measuring device in the navigation device is not limited to GPS, but other systems may be used, and it is also conceivable to input the current location manually.

In such a navigation device, a central processing circuit 4 cooperates with a storage circuit 6 and a recording medium player 7 to display various images in response to operation commands from an input device 5. In the present invention, in particular, the central processing circuit 4 executes the operation mode shown in the flowchart of FIG. 2(6). That is, in this operation mode, first, the recording medium player 7 is scanned to read district screen data corresponding to the current position data obtained from the current position measuring device 3 from the recording medium, and this is stored in the storage circuit 6. Remember (Stella 7O8,). Next, a fuel remaining signal having a value corresponding to the remaining fuel level supplied from the remaining fuel amount detector provided in the current position measuring device 3 is read, and if the remaining fuel amount is a predetermined amount, for example, 10 liters or more, Finish the step. Also, the remaining fuel amount is 1
If it is less than 0 liters, the following operation is performed (step 52jS3). First, regional information data, which is additional information on the map surface including the current position of the vehicle, is read from the recording medium player 7 and stored in the storage circuit 6 (step S4).
. Then, the gas station (GS) day number - Ichiyo is selected from the regional information data (step S5). The gas station data is 2
If it is recorded as one dimensionally distributed screen,
Gas station data is superimposed and synthesized on the map surface including the current location, and data indicating the gas station location is inserted into the district screen data. Additionally, if the gas station data G is recorded as G(r, y) using a position parameter, the gas station data is sequentially inserted into the corresponding position of the district screen data according to the position parameter. to synthesize the screen (step S6). The synthesized data is transferred to the display control circuit 2, and information indicating the location of the gas station is displayed on the screen of the display 1 on the district screen (step S7).
. This mode of operation then ends.

Note that as shown in the flowchart of FIG. 2, step S5a
~S5h can be provided to display only refueling stations that are within the reachable range based on the remaining fuel amount. Average fuel consumption (
c) is obtained by known means in other operation modes and held in the memory circuit 6. Furthermore, in order to emphasize that the amount of fuel remaining is low, the location of the filling station may be highlighted with a color such as red, evening, or yellow depending on the amount of remaining fuel, or the location may be highlighted by blinking or changing the brightness. It's okay. In this case, R of the gas station information data stored in the storage circuit 6 is
This is done by changing the GB information.

Figures 3 (GA) and (to) show examples of what is displayed on the display screen of the display unit 1 when the central processing circuit 4 is operated according to the procedures shown in Figures 2 (A) and (B), respectively. It shows.

As described in detail, the in-vehicle navigation system of the present invention is designed to automatically display additional information such as refueling stations on the road map screen when the fuel level falls below a predetermined amount, thereby making it easier to drive. This is advantageous because it not only alerts the user to the location of the gas station, but also allows the location of additional information such as a gas station to be known in advance, making it possible to refuel more reliably.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an example of a device implementing the present invention;
2(A) and 0 are flowcharts showing the operation of the apparatus of FIG. 1, and FIGS. 3(A) and 3(c) are diagrams showing examples of display screens by the apparatus of FIG. 1. Explanation of symbols of main parts 1...Display device 2...Display control circuit 3...Current location measuring device 4...Central processing circuit Death...Input device 6...
Memory circuit 7...recording medium player

Claims (2)

[Claims] (1) A first storage means that stores information pieces including a plurality of map screen information, a position detection means that outputs absolute address information of the vehicle position, a remaining fuel amount detection means that outputs a remaining fuel amount signal; Remaining fuel amount by an in-vehicle navigation device having a selection means for selecting and processing the information piece based on the position information and the remaining fuel amount signal, a second storage means for temporarily storing the information, and a display means for displaying the information piece. The warning display method comprises reading a first level information piece group including map screen information and a second level information piece group which is additional information subordinate to each of the first level information piece groups from the storage means and displaying the first level information piece group. 2
stored in a storage means, and when the remaining fuel amount signal is below a reference level, a first level information piece corresponding to the vehicle position absolute address information and a second level information piece subordinate thereto are read out from a second storage means and combined. and displaying the obtained composite information piece as a two-dimensional screen. (2) The remaining amount of fuel according to claim 1, wherein in the information synthesis step, the second level information piece is modulated to have a color or brightness corresponding to the remaining amount of the fuel. Alarm display method.