JPS62143200A - Receiver for vehicle - 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 (Field of Application in R Business) This invention relates to a receiving device for 11 cars, which is equipped with a traveling guidance S device that guides the cars to a predetermined destination. Ru.

(Prior Art) As is well known, a vehicle receiving device, such as a radio receiver, is equipped with a plurality of pushbutton switches, and each switch is individually set in advance to correspond to the frequency of a broadcasting station. When the driver selects one of the switches at 0, the transmitting frequency of that broadcasting station and the frequency of the receiver are synchronized, allowing the driver to immediately listen to the radio broadcast.

Some radio receivers of this type are designed to display the name of the broadcast station currently being received for the driver's convenience.

By the way, each broadcasting station in Japan is allocated two different frequencies.

Each broadcast station does not necessarily have a uniform frequency that does not overlap, but a plurality of stations υ1 are assigned to the same frequency.

Such stations on the same frequency are located in close proximity to each other.
Although it is not arranged, since vehicles sometimes travel all over Japan, the above-mentioned radio receiver with a broadcast station name display has the following problems.

(Problem to be Solved by the Invention) In other words, in the above-mentioned radio receiver with a broadcast station name display, since the station name is displayed in correspondence with the received frequency, a plurality of broadcast stations correspond to the same frequency. In some cases, the wrong broadcasting station name may be displayed.

Therefore, in order to deal with this kind of problem, we divided Japan into blocks such as broadcast areas, such as Kita Wi-do, Tohoku, and Kanto, and manually selected whether the vehicle was running in each corresponding block. It is possible to specify a single station name, but if the station name is to be specified in a relatively short period of time, such as a track that runs over several blocks in a relatively short period of time, it would be extremely troublesome to select one every time a block collapses. become.

This invention was made in view of these problems, and its purpose and 16 points are, for example, disclosed in Japanese Patent Application Laid-Open No.
φ both running guidance Hf as disclosed in Publication No. 461124 etc.? To provide a dual-purpose receiving device that can display the name of a broadcasting station inside the cylinder without the need for troublesome manual input by using f.

(Means for Solving the Problems) In order to achieve the above object, the present invention has a current position detecting means <a) for detecting the current position of the vehicle, and a driving system that guides the vehicle to a set destination. In a vehicle equipped with an induction S device f(b) and a radio receiver 1(c), a storage means (d) stores the frequency of each broadcasting station name, the same name thereof, and the location or broadcasting area of each broadcasting station.
), and a frequency detection means (e) for detecting the reception frequency currently being received by the radio reception 1 (c).
and station name selection means (f) for selecting one of the station names in the storage means (d) based on the detection signal of the detection means (e) and the current position of the vehicle detected by the current position detection means <a>. ') and display means <a) for displaying the station name specified by the selection means (f) as character information.

(Function) According to the receiving picture with the above configuration, the receiving f is calculated from the current position of the vehicle.
&F! Since the broadcasting station being received is specified, the name of the broadcasting station being received will not be displayed in between, even if the broadcasting station is on the same frequency.

(Example) Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 to 4 show an embodiment of a vehicle receiving device according to the present invention.

As shown in Fig. 142, the receiving device (a) is equipped with a driving () guidance system fe! that guides the vehicle to a set destination, as shown in Fig. 142. 10, and a radio reception BW 12 with the antenna on the right.

The driving guide 15A110 includes a display means 14, a storage means 16, a current location detection means 18, and a control means 20.

The display means 14 displays t/+ for guiding the vehicle.
t[7, for example, a map of the area where the self-portrait is currently driving,
The guidance target point set on the map, the route the vehicle takes to reach the guidance destination, and the JJJ (i
It displays the location and the name of the M transmission station being received by the radio receiver 12, and is generally a monochrome or color CRT or liquid EA large display element. Lasma displays, electroluminescence, etc. are used.
The displayed information is controlled by the above 1160 means 20.
Il will be.

The storage means 16 stores information necessary for travel guidance, including at least a map, and uses, for example, a CD-ROM or a magnetic tape. In particular, a CD-ROM has a large storage capacity and is compact. Since the access time is short, it is suitable as a storage means to be mounted on a middle piece, and the stored information may include not only maps but also vehicle start-up inspection procedures, tire replacement procedures, etc.

Retrieval of information from the storage means 16 is performed by loading a recording medium such as a compact disc or tape into the reassignment device and controlling the reproduction device by the Lll 111 means 20.

The current location detecting means 18 receives the radio wave No. 1 from the satellite and receives II! It is equipped with at least a ↓11 position system (GPS) receiver that detects the current position of both, and in addition to this, a sensor that detects the current position using the geomagnetism known in the art may be installed together or in place of the GPS.

The principle of detecting the current position of a vehicle using GPS will be briefly explained below.

As schematically shown in Fig. 3, the GPS uses a plurality of antennas A, ~A4 distributed at appropriate intervals on the earth E.
It is composed of a plurality of satellites 5L-54 and a user P, and each location 1s+ to S4 is controlled by a control M+@C via antennas A1 to A4. In addition, various places 1sI-84
Antenna A.

The IP to be used includes a receiver for receiving signals from ~A4, a transmitter for emitting various information signals toward user P, and a receiver for receiving signals from fs+~S4.

Here, if there is a clock that is completely synchronized at the transmitting point and receiving point of radio waves, and the transmitted signal is controlled by the clock, then if the timing of reception at the receiving point is measured, the propagation of radio waves between the transmitting and receiving points can be measured. The time difference can be determined, and by multiplying it by the speed of light, the distance between the transmitting and receiving points can be determined. Now, three satellites 1s5.
S2.

S3, and each satellite S1. S2. Assume that S3 is transmitting ranging signals using mutually synchronized clocks, and the position of each satellite 5I-83 at the time of reception is accurately determined. If you measure the reception time of these signals at reception point P, you can see it everywhere! i! The distances between SL, S2, S3 and the receiving point pm are calculated, and the position of user P is determined by each WJ star S7.82,
It can be determined as the intersection of three spherical surfaces centered at S3.

This makes it possible to grasp the current position of a moving heavy vehicle as an absolute position on the earth.

On the other hand, the above-mentioned 1IIItII1 means 20 is composed of a so-called microcomputer in this embodiment,
The display means 14. Storage means 16. Current location detection means 18
and a read-only memory (R
OM) 20b receives and calculates a signal from the current location detection means 18 via the input/output interface 20a, and based on the concentration, the storage means 16 is
111tIIl is composed of a CPU 20C that processes the stored information, such as displaying the current location on a map, and a random access memory (RAM) 20d that temporarily stores the captured data.

In particular, in the receiving equipment of the present invention, the frequencies of broadcasting stations in Japan, the corresponding broadcasting station names, and the coordinates of the location of each broadcasting station are stored in advance in the RAM 20d as shown in the table below. remembered.

For example, if the driver is now 80. When attempting to listen to the FM broadcast of OM HZ on the radio receiver 12, a signal corresponding to this frequency is taken in via the interface I/F 20a, and based on this signal and the output of the current location detection means 18, the CPU 20c calculates Ffj. One of the broadcast stations having the same frequency is selected and the name of the broadcast station is displayed on the display means 14 in the following procedure.

A flowchart of this processing procedure is shown in FIG.

When the broadcasting station name determination routine starts at step ■,
First, in step (2), the current position of the vehicle is detected by G)) 518, and in step (2), the corresponding broadcasting station name and coordinates are stored in the storage means (RAM) 20d based on the frequency signal from the radio receiver 12. searched in the data. Next, it is determined in step (2) whether a corresponding broadcasting station exists in the stored data. If it is determined that it is not step ■, the process returns to the main routine via the return step, but if it is determined here that there is a corresponding broadcasting station name, it is determined in step ■ whether the number is 1 or not. If there are more than one, processing is performed to select one.

To select a broadcasting station, the detection data of the current position U obtained in step (2) and the distance to each broadcasting station are calculated in step (2), and one of the closest broadcasting stations is selected in step (2).

The broadcasting station name selected in this way is displayed on the display means 14 in step (3).

Further, if there is only one broadcasting station corresponding to the frequency signal in step (2), the program skips to step (2) and displays the name of that broadcasting station without going through the above-mentioned selection procedure.

When the display of the broadcasting station name is finished, the process returns to the main routine in step ■.

In the above embodiment, the selected broadcasting station name is displayed on the display means 14 such as a CRT. Of course, it is also possible to display the broadcasting station name separately from 14.

Further, in the above embodiment, when there are a plurality of broadcasting stations with the same frequency, the method of selecting one by calculating the distance between the current position and the broadcasting station is exemplified. However, the number of stations is not limited to this, and for example, broadcast stations are stored in the RAM 20d for each broadcast area so that the number of stations does not become 11. One broadcast station may be automatically selected using the frequency signal from the receiver 12.

(Effects of the Invention) As described above in detail in the embodiments, in the vehicle reception equipment according to the present invention, the vehicle driving guidance system U and the radio receiver are combined, and the broadcasting station The name of the broadcasting station is memorized in correspondence with the frequency, and the name of the broadcasting station is selected and displayed based on the vehicle's current position (Q-). can.

[Brief explanation of drawings]

Figure 1 is a block diagram showing the configuration of this RIll mushroom equipment, Figure 2
FIG. 3 is a block diagram showing the overall configuration of an embodiment of the present invention, FIG. 3 is a diagram explaining the principle of the GPS system, and FIG. 4 is a flowchart showing an example of the processing procedure. 10...Traveling II #equipment V112...
Radio receiver 14...Display means 16...
... Storage means 18 ... Current location detection means 20 ... Control means Special applicant Mazda Co., Ltd.
Representative of Pioneer Co., Ltd.
Patent Attorney - Irolit Sukedo Patent Attorney Masatoshi Matsumoto Figure 1 Figure 4

Claims (1)

[Claims] In a vehicle that has a current location detection means that detects the current location of the vehicle, and is equipped with a travel guidance device and a radio receiver that guide the vehicle to a set destination, the frequency of each broadcasting station and the station name corresponding to the frequency and a storage means for storing the location or broadcast area of each broadcast station, a frequency detection means for detecting the reception frequency currently being received by the radio receiver, a detection signal of this detection means, and a detection of the current location. The station name selection means selects one of the station names in the storage means based on the current position of the vehicle detected by the means, and the display means displays the station name specified by the selection means as character information. A vehicle receiving device characterized by: