JP2922901B2 - Navigation system for moving objects - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation device for a moving object, and particularly to a moving object such as a running vehicle, which changes as the moving object moves. For a mobile object that can automatically select and tune the radio receiver by supplying a command signal for tuning and tuning of a receivable radio broadcast station corresponding to the current position to the radio receiver. The present invention relates to a navigation device. [Prior art] In order to transmit or receive radio waves from a plurality of artificial satellites to various moving objects such as ships, airplanes, automobiles, etc., to confirm or determine the current position, moving speed, and the like, It has been noted that GPS positioning devices are useful. here,
A GPS positioning device, a global positioning system (G robal P os
It receives radio waves from a plurality of artificial satellites belonging to itioning S ystem), those that are to be able to know the current position of the moving body. As is conventionally known, a positioning operation performed using such a GPS positioning device is usually performed by receiving radio waves from three or more artificial satellites. Radio waves from a plurality of artificial satellites are simultaneously received by the mobile unit, and the difference in accuracy between the clock devices provided on the plurality of artificial satellites and the clock unit provided on the mobile unit is described above. After the necessary correction processing for the time lag based on the above is performed, the current position of the moving body is displayed on an appropriate display means. At this time, the necessary map information is superimposed on the information on the current position and displayed on the display means. Further, as a navigation device for the above-mentioned various moving bodies, a so-called self-supporting type is conventionally known. This self-contained navigation device is described above.
Unlike a GPS navigation device, it is possible to know its current location based only on the data it has acquired without relying on external data such as radio waves from artificial satellites. is there. FIG. 4 is a block diagram showing a conventional device of this type having both a GPS navigation function and a self-contained navigation function. In FIG. 4, (3) is a GPS antenna for receiving satellite radio waves, and the output side of this GPS antenna (3) is connected to a GPS receiving section (4).
(1) is a traveling distance sensor, (2) is a direction sensor,
These are connected to a position detecting section (5) together with an output side of the GPS receiving section (4). The output side of the position detection unit (5) is connected to a data processing unit (8), and a key input unit (6) and a map data storage unit (7).
And a display unit (9) are connected to the data processing unit (8). Note that a radio receiver (10) including a radio antenna (11) is provided separately. Next, the operation will be described. An operator of a moving object such as a vehicle activates the above-described navigation device for a moving object by, for example, pressing a start key on a key input unit (6). Then, by pressing a function key such as an appropriate selection key, either the GPS navigation function or the self-contained navigation function is selected. Now, assuming that the former function is selected, the traveling distance sensor (1) and the azimuth sensor (2) are separated from the position detecting unit (5) by a mechanical switch or the like (not shown), and are separated by the GPS antenna (3). The current position and moving direction of the moving object are confirmed or determined only by the received satellite radio waves. On the other hand, when the GPS navigation function cannot be selected due to the presence of various obstacles, the self-supporting navigation function is selected, and only the data obtained from the mileage sensor (1) and the direction sensor (2) are used. Based on this, the user checks or determines his / her current position and moving direction. By appropriately operating a tuning knob (not shown) of the radio receiving unit (10), a desired one can be selected from radio broadcasting stations that can be heard at the current position. Become. By the way, in such a conventional device, the navigation function is not linked to the tuning function of the radio receiving unit, and therefore, the receivable radio broadcasting stations change as the moving body moves. However, it is impossible to appropriately cope with this, and the operation of selecting a desired radio broadcast station must be performed separately. [Problems to be Solved by the Invention] Since the conventional device has the above-described configuration and operates, the navigation function performed by the mobile object navigation device is selected by the radio receiver. Since it is not linked to the function, even if the receivable radio broadcast station changes with the movement of the mobile object, it cannot respond appropriately to this, and the tuning operation must be performed separately. There was a problem that it did not become. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and provides a command signal for selecting and tuning a receivable radio broadcast station corresponding to a current position that changes with movement of a moving object. It is an object of the present invention to obtain a mobile navigation device in which the radio receiver can be automatically tuned and tuned by supplying it to a receiver. [Means for Solving the Problems] A navigation apparatus for a mobile object according to the present invention includes a position detection unit for detecting a current position of the mobile object, a receivable station indicating predetermined map data and a receivable radio broadcast station. A storage unit for storing data, and map data corresponding to the current position of the moving object and receivable at the current position of the moving object from the storage unit based on the current position of the moving object detected by the position detecting unit. A data processing unit that reads out receivable station data indicating a radio station, a radio receiving unit that automatically performs tuning and tuning operations for receivable stations, and a current position of the mobile unit sent from the data processing unit. A map corresponding to the current position of the mobile unit and the mobile unit based on the map data to be transmitted and the receivable station data indicating the receivable radio stations at the current position of the mobile unit And a display unit for displaying a list showing receivable radio stations at the current position on the same display screen. [Operation] According to the present invention, a radio receiving unit that automatically performs channel selection and tuning operations for receivable stations, map data corresponding to the current position of the moving object sent from the data processing unit, and the current position of the moving object And a display unit for displaying, in the same display screen, a map corresponding to the current position of the moving object and a list indicating the receivable radio stations at the current position of the moving object according to the receivable station data indicating receivable radio stations in Since it is provided, receivable radio stations other than the automatically selected and tuned receivable stations can be displayed together with the map on the display unit. Embodiment An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of the present invention.
In FIG. 1, (3) is a GPS antenna for receiving satellite radio waves, and the output side of the GPS antenna (3) is a GPS antenna.
It is connected to the receiving section (4). (1) is a traveling distance sensor, (2) is an azimuth sensor, and these are connected to a position detector (5) together with an output side of a GPS receiver (4). The output side of the position detecting section (5) is connected to a data processing section (8A), and a key input section (6), a map data storage section (7B) and a tuning section storage section (7C).
A storage unit (7A), a display unit (9), and a radio reception unit (10) including a radio antenna (11) are connected to the data processing unit (8A). The tuning / tuning control unit (8B) included in the data processing unit (8A) issues a required tuning / tuning command signal to the radio receiving unit (10), and displays the signal. The update determination unit (8C) is provided for supplying necessary channel selection command-related data to the unit (9). This is for determining whether or not updating is necessary. FIG. 2 is a flowchart for explaining the operation of the above embodiment. FIG. 3 is an illustration of a display screen of the display unit in the above embodiment. In FIG. 3, reference numeral (91) denotes a display screen of the display unit (9), in which a map corresponding to the current position of the moving object is displayed and a window (92) is displayed. In FIG. 3, (P) indicates the current position of the moving object, and (R ₁ ) to (R ₇ ) indicate the moving route. In addition, window (92)
Are lists showing radio stations that can be selected in correspondence with a certain map area, and include AM stations,
The type of FM station, the order of reception conditions, the name of the broadcasting station, the frequency used, and the like are displayed for each column. Next, the operation of the above embodiment shown in FIG. 1 will be described with reference to FIGS. 2 and 3 as appropriate. An operator of a moving body such as a vehicle starts the above-described embodiment apparatus by, for example, pressing a start key on a key input unit (6) (S20). Next, GPS signals as satellite radio waves and self-contained signals that can be captured by the mobile body itself are
The current position (P) of the moving object is detected by the data processing unit (8A), which is captured via the GPS antenna (3), the traveling distance sensor (1), and the direction sensor (2) (S21).
Subsequently, the corresponding map data and receivable station data are respectively taken out from the map data storage section (7B) and the channel selection storage section (7C) in the storage section (7A), and the display section ( 9) is displayed (S22). Subsequently, the tuning / tuning control section (8B) gives a tuning / tuning command signal to the radio receiving section (10) to execute the tuning / tuning operation on the receivable station (S23). ). In addition,
Such tuning and tuning operations are confirmed by the operator by looking at the display contents of the window (92) on the display screen (91) of the display unit (9). Next, it is determined whether the reception state of the broadcast wave from the broadcast station once tuned and tuned is good or not (S24). If the result of the determination is Yes, the process moves to the next step (S25) and the reception is continued. On the other hand, if the result of the determination is No, the process returns to step (S23) and another channel
Resume the tuning operation. Further, following the continuation of the reception in step (S25), it is periodically determined whether or not the map data needs to be changed (S26). If the result of the determination is Yes, the process returns to step (S21) and a new current position is detected. On the other hand, when the result of the determination is No, the process returns to step (S25) and the receiving operation is continued. Thus, according to the above-described embodiment, the tuning function of the radio broadcasting station is skillfully associated with the original navigation function, and the tuning and tuning of an appropriate broadcasting station among the receivable broadcasting stations at the current position of the mobile body is performed. Will be done automatically. In a normal radio broadcasting station, the call sign and the operating frequency of the own station are broadcast as radio reception data in a timely manner.
Such radio reception data can be subjected to appropriate format conversion and supplied to the data processing unit (8A). Then, the received radio reception data is compared with the receivable station data taken in from the channel selection storage unit (7C). [Effects of the Invention] As described above, the navigation apparatus for a mobile object according to the present invention includes a radio receiving unit that automatically performs a tuning and tuning operation for a receivable station, and a mobile unit that receives a movement transmitted from a data processing unit. The map corresponding to the current position of the mobile object and the receivable radio station at the current position of the mobile object are obtained by the map data corresponding to the current position of the mobile object and the receivable station data indicating the receivable radio station at the current position of the mobile object. And a display unit for displaying a list indicating the same on the same display screen, so that receivable radio stations other than the automatically tuned and tuned receivable stations are displayed together with a map on the display unit. Thus, the effect that the user can see the data is exhibited.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG.
FIG. 3 is a flowchart for explaining the operation of the above embodiment, FIG. 3 is an illustration of a display screen of a display unit in the above embodiment, and FIG. 4 is a block diagram showing a conventional example. (1) is a traveling distance sensor, (2) is a direction sensor, and (3)
Is a GPS antenna, (4) is a GPS receiver, (5) is a position detector, (6) is a key input unit, (7A) is a storage unit, (7B) is a map data storage unit, and (7C) is a station. (8A) is a data processing unit, (8B) is a tuning and tuning control unit, (8C) is an update determining unit, (9) is a display unit, (10) is a radio receiving unit, and (1) is a radio receiving unit.
1) is a radio antenna. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

(57) [Claims] A position detection unit that detects the current position of the moving object, a storage unit that stores predetermined map data and receivable station data indicating a receivable radio broadcast station, and a current position of the moving object detected by the position detection unit A data processing unit that reads, from the storage unit, map data corresponding to the current position of the mobile unit and receivable station data indicating a receivable radio station at the current position of the mobile unit based on A radio receiving unit for automatically performing a tuning operation, a receivable station indicating map data corresponding to the current position of the moving object sent from the data processing unit and a receivable radio station at the current position of the moving object; According to the data, a map corresponding to the current position of the mobile unit and a list indicating receivable radio stations at the current position of the mobile unit are displayed on the same display screen. Mobile navigation system being characterized in that a radical 113.