JPH0678075A - Method for controlling information communicating system loaded on vehicle - Google Patents

Abstract

PURPOSE:To reduce the communication cost by omitting the retrying labor of selecting operation on an operation part which is necessary for obtaining required operation. CONSTITUTION:When a key lock signal is outputted during the operation of an operation part, a holding request signal is sent from a control part to an information center 3, telephone lines 4, 7 are temporarily disconnected, a control state held immediately before the disconnection of the lines 4, 7 is stored in a system side storing part and an information center side storing part, and at the time of reconnecting the lines 4, 7 after stopping the output of the key lock signal, a holding reset signal is transmitted from the control part to the center 3 and a menu picture obtained immediately before the disconnection of the lines 4, 7 is displayed on a display part based upon the stored contents of the storage part to shift the center 3 to the state held immediately before the disconnection of the lines 4, 7. Thereby convensional labor for retrying selecting operation from the start can be omitted and useless communication cost can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control method for an on-vehicle information communication system for displaying information information transmitted from an information center via a telephone line on a display unit such as an LCD, and particularly to obtain desired information. The present invention relates to the one in which the redo of the selection operation of the operation unit necessary for that is omitted.

[0002]

2. Description of the Related Art Conventionally, a car navigation system having various functions has been developed, and recently, by utilizing the features of a CD-ROM, hotel information, sightseeing / destination place information, cultural facility information, etc. can be stored in the CD-ROM. Various information of the CRT,
It is also considered that the information can be displayed on a display unit such as an LCD to provide information to the driver.

However, the information stored in these CD-ROMs is only fixed information, and it is not possible to provide information that changes from moment to moment such as traffic information, and it is not possible to provide more complete information. .

On the other hand, portable radio telephones have been remarkably popularized and often mounted on automobiles, and as shown in FIG. 3, an in-vehicle communication system 2 including a radio telephone mounted on a vehicle 1 and the above-mentioned. A telephone line is connected to the information center 3 that transmits predetermined information including information that changes every moment, and so-called personal computer communication technology is applied to transmit and receive data between the vehicle-mounted computer and the information center. It is conceivable that various information including the change information transmitted from the information center can be provided to the driver.

The vehicle-mounted information communication system 2 is connected to a base station 5 via a wireless car telephone line 4, and the base station 5 and an information providing computer (hereinafter referred to as IPC) 6 of the information center 3 are connected to each other. Normal wired telephone line 7
Connected by.

The in-vehicle communication system 2 of this type is generally constructed as shown in FIG. 4, and is connected to the wireless telephone 11 connected to the IPC 6 of the information center 3 via a telephone line and the wireless telephone 11. Based on the transmission data captured by the in-vehicle computer 13 and the in-vehicle computer 13 that is a control unit for capturing the transmission data from the information center 3 into the built-in memory via the modem 12 and the wireless telephone 11. From a display unit 14 for displaying a menu screen, an operation unit 15 having operation keys for selecting a search menu for obtaining desired information from the menu screen displayed on the display unit 14, a vehicle speed sensor, etc. And a key lock unit 16 that detects the start of traveling based on the vehicle speed pulse and outputs a key lock signal to invalidate the operation of the operation keys. More composed.

Here, as an operation key of the operation unit 15, an up key 15 for moving the position of the cursor displayed on the display unit 14 upward by the control of the vehicle-mounted computer 13.
On the contrary, a down key 15b for moving downward and a select key 15c for selecting this menu when the cursor matches the desired search menu name are provided.

When the wireless telephone 11 is operated to call the information center 3 and the telephone line with the IPC 6 of the information center 3 is connected, the transmission data from the IPC 6 is sent to the vehicle-mounted computer 13 via the wireless telephone 11 and the modem 12. 5, the menu screen as shown in FIG. 5 is displayed as an initial screen on the display unit 14 under the control of the vehicle-mounted computer 13, and the driver operates the up and down keys 15a and 15b of the operation unit 15 to obtain a desired menu name. Move the cursor to, for example, move the cursor to the menu name "Map" as shown in the figure, and then
A road map is displayed on the display unit 14 by turning on the select key 15c and selecting and operating map information.

On the other hand, as shown in FIG. 6 (a), when the cursor is moved to the menu name of "information database" and the select key 15c is turned on, various operating procedures for accessing the information database of the information center 3 etc. 6 is displayed. For example, as shown in FIG. 6B, a menu screen having menu names such as “access database” and “reproduce information” is displayed. When the cursor is moved to the menu name "Access database" and the select key 15c is turned on, a menu screen as shown in FIG. 6C is displayed.

If there is no corresponding menu name in the menu screen shown in FIG. 6C, the cursor is moved to the menu name of "next page" and the select key 15c is turned on to display the next screen. , The following menu screen as shown in FIG. 6 (d) is displayed, and if there is a menu name for obtaining desired information in this, for example, if you want to know today's bargain information of supermarket ○○ When the cursor is placed on the menu name of “Super bargain sale information” and the select key 15c is turned on and the super bargain bargain information is selected and operated,
In Super ○○○, information about which goods are cheap today is displayed on the display unit 14, and the ever-changing information collected in the information center 3 can be obtained while the driver is in the car. .

The same applies to the case of obtaining other traffic information, parking lot information, and the like.

[0012]

By the way, in this type of vehicle-mounted information communication system, from the viewpoint of safety, the key lock described above is provided in order to prevent each key of the operation section 15 from being operated while the vehicle is running. Part 16 is provided,
For example, while the vehicle is stopped to wait for a signal, a telephone line with the IPC 6 of the information center 3 is connected to operate the keys 15a to 15c of the operation unit 15 to obtain desired information, and the required selection operation is completed. If the signal is changed and the vehicle starts running again when the vehicle is not in operation, the operation portion 15 cannot be operated due to the operation of the key lock portion 16, and when the vehicle is stopped next time, the selection operation must be redone from the beginning. However, there is a problem that the communication cost is increased while the telephone line remains connected.

Therefore, the present invention has been made in order to solve the above problems, and saves the trouble of re-doing the selection operation of the operation section necessary for obtaining desired information.
The purpose is to reduce communication costs.

[0014]

A control method for an on-vehicle information communication system according to the present invention is a wireless telephone connected to an information center via a telephone line, a modem connected to the wireless telephone, and the modem. And a control unit that receives transmission data from the information center via a wireless telephone, a display unit that displays a menu screen based on the transmission data received by the control unit, and a menu screen that is displayed on the display unit. An in-vehicle device including an operation unit having operation keys for selecting a search menu for obtaining desired information from among them, and a key lock unit for outputting a key lock signal when starting traveling and invalidating the operation of the operation keys In the case of a general purpose information communication system, when the key lock signal is output during the operation of the operation unit, the control unit causes the connected telephone line to be connected. The hold request signal and transmits to the information center Te, cutting the telephone line being connected,
The control state until just before the line disconnection is stored in the system side storage unit and the information center side storage unit, and after the output of the key lock signal is stopped, the telephone line between the information center and the wireless telephone is manually reconnected. At the same time, the control unit transmits a hold release signal to the information center, and the control unit causes the display unit to display the menu screen immediately before the line disconnection based on the stored contents of the system-side storage unit, and the information center side. It is characterized in that the information center is shifted to the state immediately before the line disconnection based on the stored contents of the storage unit.

[0015]

According to the present invention, when the key lock signal is output during the operation of the operation section, the control section transmits the hold request signal to the information center and the telephone line is temporarily disconnected until just before the line is disconnected. The control state of is stored in the system side storage unit and the information center side storage unit, and when the telephone line is reconnected after the output of the key lock signal is stopped, the control unit sends a hold release signal to the information center and the menu immediately before the line is disconnected. Since the screen is displayed on the display unit and the information center shifts to the state immediately before the line is disconnected, it is possible to save the trouble of redoing the selection operation from the beginning as in the conventional case and to reduce the wasteful communication cost.

[0016]

1 and 2 are flowcharts for explaining the operation of an embodiment of a control method for an in-vehicle information communication system according to the present invention.

However, since the structure of the vehicle-mounted information communication system applied to the present invention is the same as that shown in FIGS. 3 and 4,
Although these figures are also referred to in the following description, the functions of the vehicle-mounted computer 13 and the IPC 6, which are the control unit, are different from the conventional ones.

That is, when a key lock signal is output by the start of running during operation of the operation unit 15, the vehicle-mounted computer 13 sends a hold request signal to the information center 3 via the connected telephone lines 4 and 7. While transmitting to the IPC 6, the connected telephone lines 4 and 7 are disconnected, and the control state immediately before the disconnection is stored in the built-in memory of the vehicle-mounted computer 13 which is the system side storage unit and the IP which is the information center side storage unit.
It is stored in the built-in memory of C6, and the information center 3 is manually operated after the output of the key lock signal is stopped when the vehicle stops running.
At the time of reconnection with the vehicle-mounted computer 13, a hold release signal is transmitted to the IPC 6, and the vehicle-mounted computer 13 displays the menu screen immediately before the line disconnection on the display unit 14 based on the stored contents of the memory of the vehicle-mounted computer 13. Based on the stored contents of the memory of the IPC 6, the IPC 6 is shifted to the state immediately before the line is disconnected.

Next, the control procedure will be described with reference to the flowcharts of FIGS. 1 and 2.

FIG. 1 shows the procedure on the side of the communication system 2 for vehicles. Now, the radio telephone 11 is dialed to call the information center 3 and the telephone lines 4 and 7 with the information center 3 are connected (step S1), an ID number and a personal identification number are input by a dial operation and transmitted to the IPC 6 (step S2).

After that, by the vehicle-mounted computer 13,
It is determined whether it is normal or recall, that is, line connection for normal communication or reconnection after generation of a key lock signal (step S3), and when it is determined to be normal, the key lock unit 16 locks the key. Whether or not a signal is output is determined (step S4), and the determination result is N
If it is O, each key of the operation unit 15 is operated (step S5), transmission / reception processing with the IPC 6 is performed (step S6), and the display unit 14 is based on the received data by the control of the vehicle-mounted computer 13. A predetermined menu screen is displayed (step S7), and it is determined whether or not the screen to be displayed on the display unit 14 is the last, that is, whether communication may be terminated (step S8), and the determination result If NO is determined, the process returns to step S4, and if the determination result is YES, line disconnection or other communication termination processing is performed (step S4).
9), the operation ends.

On the other hand, if the decision result in the step S4 is YES, the on-vehicle computer 13 issues the hold request signal I.
It is transmitted to the PC 6 (step S10), and it is determined whether or not there is a reception response of the hold request signal from the IPC 6 (step S11). If the determination result is YES, the built-in memory of the vehicle-mounted computer 13 causes the display unit to display. After the screen currently displayed is stored in 14 (step S1
2) The process proceeds to step S9, and if the determination result is NO, an error is displayed on the display unit 14 (step S1).
3), the process proceeds to step S9.

By the way, when it is judged as a recall in the judgment of step S3, the vehicle-mounted computer 1
3 transmits a hold release signal to the IPC 6 (step S14), and it is determined whether or not there is a reception response of the hold release signal from the IPC 6 (step S15). If the determination result is YES, the vehicle-mounted computer 13 After the menu screen displayed on the display unit 14 immediately before the line disconnection is displayed on the display unit 14 again based on the stored contents of the memory (step S16), the process proceeds to step S4, and the determination result of step S15 is NO. If so, the vehicle-mounted computer 13 sends an error message to the IPC 6.

Next, FIG. 2 shows a procedure on the information center 3 side. When the telephone lines 4 and 7 with the wireless telephone 11 are connected by the dial operation of the wireless telephone 11 (step T1), the wireless telephone 11 The ID number and the personal identification number input from are confirmed (step T2), and then it is determined whether or not the hold release signal from the vehicle-mounted computer 13 is received (step T3).

If the decision result in the step T3 is NO, it is decided whether or not the hold request signal is received from the vehicle-mounted computer 13 (step T4). After the transmission / reception processing with the computer 13 is performed (step T5), it is determined whether the communication may be ended (step T6),
If the determination result is NO, the process returns to step T4. If the determination result is YES, line disconnection and other communication termination processing are performed (step T7), and the operation ends.

On the other hand, if the decision result in the step T4 is YES, the current control state is stored in the built-in memory of the IPC 6 (step T8), and then the process shifts to the step T7.

By the way, if the decision result in the above step T3 is YES, it is decided by the IPC 6 whether or not the control state immediately before the line disconnection is stored in the memory (step T9), and the decision result is YES. If so, the IPC 6 shifts to the state immediately before the line disconnection based on the stored contents of the memory of the IPC 6 (step T10). If the determination result is NO, the IPC 6 sends an error message to the vehicle-mounted computer 13 (step T11), After that, after the process of step T10 is performed, the process proceeds to step T4.

Therefore, when the key lock signal is output during the operation of the operation unit 15, the vehicle-mounted computer 13 transmits a hold request signal to the IPC 6 by the processing of steps S4 and S10 in FIG. If received, the current display screen is stored in the internal memory of the vehicle-mounted computer 13 by the processing of steps S11 and S12,
The telephone lines 4 and 7 are disconnected by the processing of step S9,
On the other hand, when the information center 3 receives the hold request signal, the IPC 6 is processed by the processing of steps T4 and T8 of FIG.
The current control state is stored in the built-in memory of the.

Next, after the output of the key lock signal is stopped, when the telephone lines 4 and 7 with the information center 3 are reconnected by the dial operation of the wireless telephone 11, the step S in FIG.
3, the vehicle-mounted computer 1 by the processing of S14 to S16
3 sends a hold release signal to the IPC 6, and the menu screen immediately before the line disconnection is displayed on the display unit 14 based on the stored contents of the internal memory of the vehicle-mounted computer 13, while the information center 3 receives the hold release signal. The IPC 6 shifts to the state immediately before the line disconnection by the processing of steps T3, T9 and T10 in FIG.

In this way, it is possible to save the trouble of re-performing the selection operation from the beginning as in the conventional case, and further, it is possible to significantly reduce the wasteful communication cost by automatically disconnecting the telephone lines 4 and 7.

In the above embodiment, the system side storage unit,
Each of the information center storage units has a vehicle-mounted computer 1
The case where the built-in memory of No. 3 and the built-in memory of IPC6 are used has been described, but the present invention is not limited to these.

[0032]

As described above, according to the control method of the in-vehicle information communication system of the present invention, the hold request signal is transmitted from the control unit to the information center and the telephone line is temporarily disconnected when the key lock signal is output. However, when the telephone line is reconnected after the output of the key lock signal is stopped, the control unit sends a hold release signal to the information center, displays the menu screen just before the line disconnection on the display unit, and puts the information center in the state immediately before the line disconnection. Since it shifts to, it is possible to save the trouble of redoing the selection operation from the beginning as in the past, and it is possible to reduce unnecessary communication costs, and it is possible to provide an in-vehicle information communication system with excellent functions, and to improve roads Realization of a transportation society can be expected.

[Brief description of drawings]

FIG. 1 is a flowchart for explaining a part of the operation in an embodiment of a control method for an in-vehicle information communication system according to the present invention.

FIG. 2 is a flowchart for explaining the operation of another part of the embodiment of the present invention.

FIG. 3 is a schematic diagram of a general vehicle-mounted information communication system.

FIG. 4 is a block diagram of the vehicle-mounted communication system of FIG.

5 is an explanatory diagram showing an example of a display screen of the display unit of FIG.

6 is an explanatory diagram showing another example of the display screen of the display unit of FIG.

[Explanation of symbols]

 3 Information center 4, 7 Telephone line 11 Wireless telephone 12 Modem 13 In-vehicle computer (control section) 14 Display section 15 Operation section 15a Up key 15b Down key 15c Select key 16 Key lock section

Claims (1)

[Claims] 1. A wireless telephone connected to an information center via a telephone line, a modem connected to the wireless telephone, and a control unit for receiving transmission data from the information center via the modem and the wireless telephone. And a display unit for displaying a menu screen based on the transmission data received by the control unit, and an operation key for selecting a search menu for obtaining desired information from the menu screen displayed on the display unit. An in-vehicle information communication system comprising: an operation unit having a key lock unit that outputs a key lock signal when starting traveling and invalidates an operation of the operation key, wherein the key lock is performed during operation of the operation unit. When a signal is output, the control unit transmits a hold request signal to the information center via the telephone line being connected, After disconnecting the talk line, the control state immediately before the line disconnection is stored in the system side storage unit and the information center side storage unit, and after the output of the key lock signal is stopped, the information center and the wireless telephone are manually operated. When the telephone line is reconnected, the control unit transmits a hold release signal to the information center, and the control unit displays a menu screen immediately before the line disconnection on the display unit based on the stored contents of the system-side storage unit. At the same time, the method for controlling an on-vehicle information communication system is characterized in that the information center is shifted to a state immediately before the line is disconnected based on the stored contents of the information center side storage unit.