JP2002148057A - Car navigation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a car navigation system that can satisfy a user's requirement in a moment. SOLUTION: Since this car navigation system does not receive the conventionally utilized VICS information transmitted by FM multiplex communication system or beacon, but receives digital data tale cast, the system can make the instantaneous display of the user's request that has not been realized in the conventional example and, in addition, information offer and facility reservations using visual effects utilizing videos and sounds.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a car navigation system, and more particularly to a system capable of providing enhanced guidance to occupants including drivers.

[0002]

2. Description of the Related Art A car navigation system utilizes a GPS positioning system proposed by the United States Department of Defense that covers almost the entire earth with 24 satellites, and many recent passenger cars and commercial vehicles are mounted on vehicles. And recently,
This car navigation system can receive VICS information by FM multiplexing and beacons, output traffic congestion information and text information on a display that shows the position of the vehicle on the map screen, and changes every moment on the course Road conditions are being reported to make the driving environment more comfortable for drivers.

[0003]

However, the information that the driver or the passenger wants to know is not limited to the road conditions. Depending on the purpose of the driving, the information on the sights and historic spots of the passing towns and cities may be provided. There are many such as event guides, guides for the nearest restaurants and hotels, and information on the current or current day of the restaurants. Some of this information can be stored in advance on the map storage disk set in the car navigation system, but timely information such as event guides and restaurant and hotel availability information can be stored. Absent. Therefore, such timely information is currently available via the Internet. However, in order to access the Internet on a car, a device for connecting to a network such as a PHS or a mobile phone is required separately, and since it has to rely on wireless communication, the access speed is not so high. Is not expected to be connected at all, and above all, a method of obtaining a URL of a hotel or restaurant located ahead of the traveling direction of a car in a timely manner is insufficient. Therefore, it can be said that timely acquisition of information on the route of the vehicle through the Internet on the vehicle is insufficient due to various circumstances.

[0004] In view of the above, the present invention provides a method for easily and promptly obtaining information that a user wants to know on a vehicle in a timely manner and displaying the information on a display to make the driving environment more comfortable. The purpose is to provide a car navigation system that can be used.

[0005]

In order to achieve the above object,
The present invention relates to a car navigation system that receives information from a GPS satellite, measures the position of the vehicle, and displays the position on a map screen of a display mounted in the vehicle. Presentation information and navigation information are repeatedly broadcast from a broadcasting station. Digital broadcast receiving means that allows the receiver to selectively receive desired image data by performing a pseudo-interactive operation, and a map of the car navigation main unit that displays the name of the district existing in the traveling direction of the mounted vehicle. Means for acquiring from the data, and control means for selectively receiving digital broadcast data associated with the acquired district name through the digital broadcast receiving means and controlling the digital broadcast data to be displayed on a display. Link to desired digital broadcast data by pseudo-interactive operation It is characterized in that so as to display the click destination image data. Here, the area name acquisition means
It is characterized in that the names of destinations and stopovers, which are input when a destination setting operation is performed in the car navigation main body, are used as acquired district names.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 shows a car navigation system, and 1 is a digital data broadcasting station for distributing necessary information of a user. A broadcasting satellite 2 receives a radio wave from the broadcasting station 1, performs predetermined frequency conversion, and transmits a transmission radio wave to the ground. Reference numeral 3 denotes a GPS satellite, and reference numeral 4 denotes an automobile, on which a car navigation system 40 is mounted. 5 and 6 are, for example, restaurants on the course of the car 4;
Accommodation.

FIG. 2 schematically shows data that is repeatedly transmitted among content data distributed by the digital data broadcasting station 1. In addition to the illustrations, main broadcast data such as movies, dramas, and news is sent from the broadcast station. The data shown is presentation information 11,
The navigation information 12 and the system setting information 13 are repeatedly transmitted. The presentation information 11 is obtained by multiplexing image data of many channels, and some of the channels are used as channels for providing local program information.
.. In the figure are image data of different programs. For example, FIG.
4 shows image data 11b, FIG. 5 shows image data 11c, FIG. 6 shows image data 11d, and FIG. 7 shows image data 11e. FIG. 3 shows the correspondence between the regional information and the specific regions such as Hokkaido and Tohoku included therein. FIG. 4 shows the correspondence between Kinki and each prefecture included in it. FIG. 5 also shows the correspondence between prefectures and municipalities.
FIG. 6 shows the correspondence between Kyoto city and timely information in the city. FIG. 7 shows the contents of the event information in FIG. Here, when the "Kinki" button B1 is pressed while the image data of FIG. 3 is displayed, the image data of FIG. 4 is displayed. Information indicating that the image data and the image data in FIG. 4 are linked is included in the navigation information 12.

[0008] The system setting information 13 is information for setting a receiving apparatus (car navigation system) so that the receiving apparatus can receive and display desired image data. This information includes PAT (Program Associati
on Table) and PMT (ProgramMap Table). Of these, the PMT is the PID (Packet I) required to receive the desired program and image data.
dentifier), stream ID, and the like. The PAT and PMT are initially loaded on the receiving device immediately after startup based on the digital broadcasting standard. Therefore, when trying to display specific area information, referring to the PMT and obtaining a PID and a stream ID for obtaining the specific area information, which image data in the presentation information is obtained. Is determined.

Next, the car navigation equipment 40 has a receiving section 40a for receiving a digital broadcast from the broadcast satellite 2.
A GPS receiver 40b for receiving position data from a GPS satellite, a memory 40c for storing necessary data such as PAT and PMT among digital broadcast data received by the receiver 40a, and a map data recording disk such as a DVD. Based on the reader 40d and the position data received from the GPS satellites, the vehicle position is obtained, and control for displaying the position on the display 40e together with the map data is performed.
A control device 40 for selectively receiving and displaying digital broadcast data in accordance with an instruction from an operator and displaying the digital broadcast data.
f and a remote controller operated by the operator (hereinafter, referred to as a remote controller)
It is called a remote control. ) 40g and a remote control receiver 40h. In addition, a communication device 7 such as a mobile phone is provided in the office.

FIG. 8 is a flowchart showing the processing of the control device 40f. Hereinafter, the operation of the navigation system will be described based on the flowchart. When the navigation system is activated, the display 40e
While displaying the map around the traveling vehicle at the set magnification above, the own vehicle mark is displayed at a location on the map corresponding to the traveling position (S1). In this state, the driver or the like
When one of the above operation buttons or dial is operated (S
2) According to the contents of the operation, the destination setting process (S
3), display mode change processing (S4), editing processing (S5)
Perform The display mode changing process is a process of changing to a 3D graphic display or changing a display magnification. Editing is done by marking your home mark, your favorite store,
This is a process for entering or deleting a mark such as a gas station. The destination setting process is shown in detail in FIG. When the destination setting operation is performed, the navigation system transitions to a state of receiving a destination input (S10). To enter the destination, scroll the map, move the cursor to the position corresponding to the destination, and in addition to the method of setting, enter the address name and telephone number, select famous tourist spots etc from the list It can be performed by various methods such as a method. When a destination is input and a setting operation is performed (S11), a state is entered in which a transit point and route search conditions are received. The operator inputs desired transit points and search conditions while viewing the screen (S12). The screen at this time is shown in FIG. The figure shows a case where Obama New Port of Obama City is selected as the destination, and Takatsuki City, Kyoto City, and Kuchiki Village are selected as the waypoints. Also, priority is given to a general road as a route setting condition. When these inputs are completed and the operator presses the execution button (S1
3), the car navigation system starts a route search process that satisfies the given condition with reference to the map data (S14). When the route search is completed, guidance for traveling the route found as a result of the search is started by a screen and voice (S15). Since these route search and route guidance processes are known technologies provided in the car navigation system, the details are omitted. FIG. 12 shows a route guidance screen. In the screen, B11 is a detail button. When this button B11 is pressed (S16), the car navigation system refers to the destination name and the waypoint name set immediately before, and displays the name of the municipalities to which the destination and the waypoint belong. The entered button is generated and displayed on the screen (S17). FIG.
Figure 2 shows the screen created in this way. In the figure, B1
Buttons B2, B13, B14, and B15 can each be selected and operated. If the operator wants to see, for example, details of Kyoto City from among them, and presses B13 (S18), the car navigation system uses the place name information “Kyoto City” to store the PMT stored in the memory 40c. Is searched (S19). PM still in memory 40c
When T is not stored, the reception of the digital broadcast is continued to obtain the PMT, which is stored in the memory 40c.

The PMT is searched to detect a PID and a stream ID for specifying the image data for displaying the regional information "Kyoto City", instruct the receiving unit 40a to receive the corresponding image data, and display it on the display 40e. (S20). The corresponding image data corresponds to that shown in FIG. Subsequent processing is processing of digital broadcast reception, and it is possible to select and display desired information in a pseudo interactive manner (S21). For example, if today's event is selected on the screen of FIG. 6, the image data of FIG. 7 is received and displayed using the navigation information. And
When the search for the desired information is completed and the digital broadcasting ends, the screen returns to the route guidance screen shown in FIG. 12 (S23). Also, although not shown, the desired information is "Introduction of restaurant" and looking at the image data,
Since the estimated time of traveling in Kyoto city is around noon, if you want to make a reservation for a particular restaurant, refer to the telephone number posted on the restaurant introduction screen and use the communication device 7 to call the restaurant. And can make a reservation.

In the above-described embodiment, as a method of acquiring the municipalities existing in the traveling direction of the automobile, the names input to the destinations and the waypoints are detected. However, the present invention is not limited to this. In the state where the route is set in, the municipalities existing on the route may be searched from the map data. In that case, detection,
The search target is not limited to the name of a municipal town, but may be a smaller district name, or a name of a building, a mountain, or a river with a high profile. However, image data must be able to be specified from presentation information in digital broadcasting by its name. In that sense, city names are appropriate as place names.

[0013]

As described above, according to the present invention, a car navigation system detects a district name in relation to a traveling direction of a car and receives digital data broadcasting related to the district name, thereby utilizing the car. In addition to traffic congestion information obtained through VICS, it is possible to obtain timely information on areas that will pass before reaching the destination. More specifically, there is an advantage that information on events, eating and drinking, and lodging at destinations and stopovers can be obtained and used for travel planning.

In addition to this, information on availability of restaurants and hotels, meal menus and telephone numbers can be obtained from eating and drinking and accommodation information, and reservations can be made promptly, which is more convenient.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a car navigation system according to an embodiment of the present invention.

FIG. 2 is a diagram showing a data structure of digital broadcasting.

FIG. 3 is a diagram illustrating an example of digital broadcast image data.

FIG. 4 is a diagram showing an example of digital broadcast image data.

FIG. 5 is a diagram illustrating an example of digital broadcast image data.

FIG. 6 is a diagram illustrating an example of digital broadcast image data.

FIG. 7 is a diagram illustrating an example of digital broadcast image data.

FIG. 8 is a flowchart illustrating an operation in the car navigation system.

FIG. 9 is a flowchart showing a subroutine of a destination setting process of FIG. 8;

FIG. 10 is a flowchart showing a subroutine of a destination setting process of FIG. 8;

FIG. 11 is a diagram showing a route setting screen.

FIG. 12 is a diagram showing a route guidance screen.

FIG. 13 is a diagram showing a screen displayed when a detail button is pressed on the route guidance screen.

[Explanation of symbols]

 1: Broadcasting station 2: Broadcast satellite 3: GPS satellite 4: Car 40a: Data receiving device 40c: Recording device 40f: Processing device 40e: Display device 40h: Remote control receiving unit 40g: Remote control 7: Communication device 5: Restaurant 6: hotel

Claims (2)

[Claims] 1. A car navigation system that receives information from a GPS satellite, measures the position of the vehicle, and displays the position on a map screen of a display mounted in the vehicle. Presentation information and navigation information are repeatedly broadcast from a broadcasting station. This allows the receiver to select and receive the desired image data by performing a pseudo-interactive operation, and to display the name of the area that exists in the traveling direction of the vehicle on the car navigation body. Means for acquiring from the map data, and control means for selectively receiving digital broadcast data related to the acquired district name through the digital broadcast receiving means and controlling the digital broadcast data to be displayed on a display; Link to desired digital broadcast data by pseudo-interactive operation A car navigation system wherein link destination image data is displayed. 2. A destination name input means for inputting a destination setting operation in the car navigation main body unit.
2. The car navigation system according to claim 1, wherein the name of the stopover point is used as the name of the acquired district.