JP3098428U - Control device - Google Patents

Abstract

An object of the present invention is to set a car navigation device, whose function is restricted so that the operation cannot be performed during traveling, so that the operation can be performed even during traveling. The present invention provides a control device capable of minimizing the difference between the current position and the current position and returning to a normal state in a short time.
An apparatus main body includes an input signal for detecting whether the vehicle is traveling or stopped, and a car navigation apparatus to which the input signal is to be input, which is used to limit the operation of the car navigation apparatus. And a control circuit for controlling the switching circuit. The control circuit controls the switching circuit so that a signal indicating that the vehicle is stopped is supplied to the car navigation device instead of the input signal in accordance with the operation of the operation switch, and then a predetermined time elapses beforehand. Then, the switching circuit is controlled so that the input signal is supplied to the car navigation device.
[Selection] Figure 2

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a control device for releasing a function restriction of a car navigation device.
[0002]
[Prior art]
Generally, in a car navigation device (hereinafter, referred to as a car navigation device) genuine of a car maker, in consideration of safety, a change of a destination setting, a change of a map display mode, and the like during driving of the car are included. Functions are restricted so that all operations cannot be performed. Since it is very dangerous for a driver to watch the display screen for a long time to operate the car navigation system while driving, it is extremely dangerous to be careless in the forward direction. I have.
[0003]
By the way, there is no danger at all if the passenger operates the car navigation system even during traveling. However, in the case of a car navigation system whose functions are restricted so that it cannot be operated while traveling, even if there is a passenger, operate the car navigation system while the vehicle is temporarily stopped due to a red light or stop for that purpose. Had to operate the car navigation system. Therefore, even when there is a passenger, the car navigation system can only be operated while the vehicle is stopped, which is very inconvenient.
[0004]
On the other hand, the conventional car navigation system detects the state of the parking brake and determines whether the car is running or stopped. It was relatively easy. However, recent car navigation systems use a GPS (Global Positioning System) reception signal, a vehicle speed pulse signal (vehicle speed signal), and the like, which are originally required as position information of a vehicle, to detect whether the vehicle is running or stopped, and determine whether the vehicle is running. Tend to be designed to be inoperable.
[0005]
As shown in an example in FIG. 4, in a recent car navigation system, a vehicle speed pulse signal supplied from an automobile engine, a computer or the like 16 and a GPS reception signal supplied from a GPS antenna 14 are input, and these input signals are Based on the display, the own vehicle position is displayed on the display screen. Further, whether the car is running or stopped is detected from these input signals, and the function is restricted so that all operations of the car navigation system 12 cannot be performed when the car is running.
[0006]
For this reason, it has become very difficult to make settings so that the car navigation system 12 can be operated while the car is running.
[0007]
For example, if the GPS reception signal is stopped for a long time, the difference between the position on the display screen of the car navigation system 12 and the actual current position becomes large. There is a problem that it may take a long time to return to a normal state in which the current position matches the actual position. Further, since the GPS reception signal is a high frequency signal of 1.5 GHz, there is a problem that the switching circuit is complicated and the manufacturing cost is increased.
[0008]
[Problems to be solved by the invention]
An object of the present invention is to solve the problems based on the prior art, and to set a car navigation device whose function is limited so that the operation cannot be performed during traveling, so that the operation can be performed even while traveling. An object of the present invention is to provide a control device capable of minimizing a difference between a position on a display screen of a car navigation device related to an operation during traveling and an actual current position as much as possible and returning to a normal state in a short time.
Another object of the present invention is to provide, in addition to the above objects, a switching circuit for processing a GPS reception signal using a circuit having a simple configuration, and to provide a control device at low cost.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, a car navigation device whose function is restricted so that the operation thereof cannot be performed during traveling can be set so that the car navigation device can be operated even while traveling. Control device,
An apparatus main body and an operation switch connected to the apparatus main body,
The device body is used to limit the operation of the car navigation device, and at least one input signal for detecting whether the vehicle is running or stopped and the car navigation to which the input signal is to be input. A switching circuit provided between the device and a control circuit for controlling the switching circuit,
According to the operation of the operation switch, the control circuit controls the switching circuit so that a signal indicating that the vehicle is stopped is supplied to the car navigation device instead of the input signal. It is an object of the present invention to provide a control device wherein the switching circuit is controlled so that the input signal is supplied to the car navigation device after a predetermined time has elapsed.
[0010]
Here, in the control circuit, at least two types of time are set as the predetermined time, and one of the at least two types of time is selected according to the operation of the operation switch. Is preferably selectable.
[0011]
Further, the control circuit controls the switching circuit so that the signal indicating that the vehicle is stopped is supplied to the car navigation device, and then, according to the operation of the operation switch, sets the predetermined time. It is preferable to control the switching circuit so that the input signal is supplied to the car navigation device before elapses.
[0012]
Preferably, the input signal includes at least one of a vehicle speed pulse signal supplied from an automobile and a GPS reception signal supplied from a GPS antenna.
[0013]
Further, the input signal includes at least a GPS reception signal supplied from a GPS antenna,
The switching circuit includes a capacitor, first and second inductors, and a changeover switch as a circuit related to the GPS reception signal,
The capacitor is connected between the GPS antenna and the car navigation device; the first inductor is connected between the car navigation device and one terminal of the changeover switch; Is connected between the GPS antenna and the other terminal of the changeover switch,
The changeover switch is set to a first state or a second state by the control circuit,
When the changeover switch is in the first state, power supplied from the car navigation device to the GPS antenna is shut off by the changeover switch, and the car navigation device outputs the GPS reception signal instead of the stop signal. Is supplied, indicating that
When the changeover switch is in the second state, power is supplied from the car navigation device to the GPS antenna via the first inductor, the changeover switch, and the second inductor, and power is generated by the GPS antenna. Preferably, the received GPS signal is supplied to the car navigation device via the capacitor.
[0014]
[Embodiment of the invention]
Hereinafter, the control device of the present invention will be described in detail based on a preferred embodiment shown in the accompanying drawings.
[0015]
FIG. 1 is a conceptual diagram illustrating a connection state when the control device of the present invention is used. The control device 10 shown in FIG. 1 can be set so that an operation can be performed even while the vehicle is running while the car navigation system 12 is limited in function so that the operation is not possible during the operation. It is provided in the form of being added to the outside of the car navigation system 12 without any change or modification. For this reason, the original state can be easily restored when necessary such as when reselling the vehicle.
[0016]
The control device 10 includes an apparatus main body 18 and an operation switch 20, as shown in FIG.
[0017]
The device main body 18 includes two switching circuits 22 and 24 and a control circuit 26. One terminal of the switching circuit 22 is connected to a GPS reception signal from the GPS antenna 14, and the other terminal is connected to a terminal of the car navigation 12 to which the GPS reception signal is to be originally input. One terminal of the switching circuit 24 is connected to a vehicle speed pulse signal from a vehicle engine, a computer or the like 16, and the other terminal is connected to a terminal of the car navigation system 12 to which the vehicle speed pulse signal is to be input. I have.
[0018]
Here, the GPS reception signal and the vehicle speed pulse signal are signals for detecting whether the vehicle is running or stopped, and the car navigation system 12 detects the state of these input signals to determine whether the vehicle is running. Determine whether the vehicle is stopped. Here, an example in which these two input signals are used will be described. However, the signal used by the control device 10 to detect whether the car is running or stopped is determined by whether the car navigation system 12 is running or stopped. It is only necessary to include all the signals used to determine whether the signal is in the middle.
[0019]
That is, when the car navigation system 12 uses only the GPS reception signal to determine whether the vehicle is traveling or stopped, the control device 10 may also use only the GPS reception signal, or may use only the vehicle speed pulse signal. When using, only the vehicle speed pulse signal may be used, and when both the GPS reception signal and the vehicle speed pulse signal are used, both may be used. When the car navigation system 12 uses other input signals, the control device 10 may use the same input signals as the car navigation system 12.
[0020]
The control circuit 26 controls the switching circuits 22 and 24 in accordance with the operation of the operation switch 20, and includes an interface 28 and a timer circuit 30. The timer circuit 30 is connected to the operation switch 20 via the interface 28. From the timer circuit 30, a control signal for controlling the switching circuits 22 and 24 is output. This control signal is commonly connected to the switching circuits 22 and 24.
[0021]
The switching circuits 22 and 24 are controlled to a first state (a1, a2) or a second state (b1, b2) according to a control signal. When the switching circuits 22 and 24 are in the first state, a signal (no signal) indicating that the vehicle is stopped is supplied to the car navigation system 12 instead of the vehicle speed pulse signal and the GPS reception signal. On the other hand, when the switching circuits 22 and 24 are in the second state, the vehicle speed pulse signal and the GPS reception signal are supplied to the corresponding terminals of the car navigation system 12 via the switching circuits 22 and 24, respectively.
[0022]
The operation switch 20 is a switch for controlling the operation of the apparatus main body 18, and includes a push button 32. After the power is turned on, when the push button 32 is pressed and released for 1.5 to 3 seconds, the apparatus main body 18 is turned on, and according to the control signal output from the control circuit 26, both the switching circuits 22 and 24 are in the first state. State. That is, a signal indicating that the vehicle is stopped is supplied to the car navigation system 12 instead of the vehicle speed pulse signal and the GPS reception signal.
[0023]
When the apparatus main body 18 is turned on, the car navigation system 12 is in a state where it can be operated even during traveling. Accordingly, the passenger can operate the car navigation system 12 to perform all operations including changing the setting of the destination and switching the display mode of the map. The power of the control device 10 is supplied at the time of starting the engine of the automobile, and becomes usable. Further, when power is supplied to the control device 10, the device main body 18 is set to the initial off state.
[0024]
The timer circuit 30 is for measuring the time during which the apparatus main body 18 is in the ON state. The state of the control signal is controlled by the timer circuit 30, and the switching circuits 22 and 24 automatically return to the second state after one minute. That is, since the GPS reception signal is stopped for only one minute, the difference between the position on the display screen of the car navigation system 12 and the actual current position can be suppressed as small as possible. It can be returned to a normal state in a short time.
[0025]
It is also possible to immediately return the apparatus main body 18 to the off state at that time by pressing and releasing the push button 32 again for 1.5 seconds to 3 seconds before one minute elapses. In this case, the switching circuits 22 and 24 both enter the second state according to the control signal. As described above, since the apparatus main body 18 can be returned to the off state by the manual operation, the operation of the car navigation system 12 can be terminated in a few seconds in some cases.
[0026]
Further, in the case of the present embodiment, there are provided a first mode in which the time until automatically returning to the off state is 1 minute, and a second mode in which the time is 3 minutes. By pressing and releasing the push button 32 for 7 seconds or more, the first mode and the second mode can be alternately switched. As described above, the time required for automatically operating the car navigation system 12 can be changed by selectively setting the time required to automatically return to the off state.
[0027]
The time until the device main body 18 automatically returns to the off state is not limited to 1 minute and 3 minutes, but may be about several minutes. Also, the first and second modes are not limited to these, and only one mode may be provided, or two or more modes may be provided so that the mode can be selectively set. Further, there is no limitation on the combination of the time and the number of times the push button 32 is pressed in order to turn the device main body 18 on and off, and to switch the mode.
[0028]
Further, the push button 32 includes a lamp 34 formed integrally. The lamp 34 indicates an ON state / OFF state according to a light-on / off state after the push button 32 is pressed, and a first mode / second state according to a blink state after the push button 32 is pressed for a predetermined time. Indicates the mode. The push button 32 and the lamp 34 may be formed separately, or various kinds of conventionally known switches may be used instead of the push button 32.
[0029]
Subsequently, details of the switching circuit 22 relating to the GPS reception signal will be described.
[0030]
FIG. 3 is a schematic diagram of an embodiment of a switching circuit related to a GPS reception signal used in the control device of the present invention. This figure shows the details of the switching circuit 22 shown in FIG. 2, and includes a capacitor 36, inductors 38 and 40, and a switch 42.
[0031]
The GPS antenna 14 operates when power (DC current) is supplied from the car navigation system 12 and generates a GPS reception signal. The switching circuit 22 is configured using such features of the GPS antenna 14.
[0032]
The capacitor 36 cuts off the direct current component supplied from the car navigation system 12, passes the high frequency component of the GPS reception signal supplied from the GPS antenna 14, and supplies it to the car navigation system 12. The inductors 38 and 40 block high-frequency components of the GPS reception signal supplied from the GPS antenna 14, pass a DC current component supplied from the car navigation system 12, and supply this to the GPS antenna 14.
[0033]
The changeover switch 42 is set to a first state (a1) or a second state (b1) according to a control signal supplied from the control circuit 26.
[0034]
When the changeover switch 42 is in the first state (a1), the power supplied from the car navigation system 12 is cut off by the changeover switch 42. Therefore, no DC current is supplied to the GPS antenna 14, and no GPS reception signal is generated. In this case, the car navigation system 12 determines that the car is stopped.
[0035]
When the changeover switch 42 is in the second state (b1), the power supplied from the car navigation system 12 is supplied to the GPS antenna 14 via the inductor 38, the changeover switch 42, and the inductor 40. As a result, a direct current is supplied to the GPS antenna 14, and a GPS reception signal is generated. The generated GPS reception signal is supplied to the car navigation system 12 via the capacitor 36.
[0036]
In the control device 10, the switching circuit 22 is not limited to the one shown in FIG. 3, and various other known circuits can be used if costs are ignored. However, since the switching circuit 22 shown in FIG. 3 has a very simple structure, it is possible to provide an inexpensive control device 10 for processing a GPS reception signal having a high frequency of 1.5 GHz. There is.
[0037]
The present invention is basically as described above.
As described above, the control device of the present invention has been described in detail. However, the present invention is not limited to the above-described embodiment, and various modifications and changes may be made without departing from the gist of the present invention. .
[0038]
[Effect of the invention]
As described in detail above, according to the control device of the present invention, for the car navigation device whose function is restricted so that it cannot be operated during traveling, any change or modification of both the car and the car navigation device is performed. Without performing, it is possible to set so that the operation can be performed even while driving, and even when operating the car navigation device during driving, the GPS reception signal is stopped only for a short time. The difference between the position on the display screen and the actual current position can be kept as small as possible, and the normal state can be restored in a short time even after the suspension of the GPS reception signal is released.
Further, according to the control device of the present invention, the switching circuit for processing the GPS reception signal can be realized with a very simple configuration, so that the manufacturing cost of the control device can be significantly reduced.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram illustrating a connection state when the control device of the present invention is used.
FIG. 2 is a configuration conceptual diagram of a control device according to an embodiment of the present invention;
FIG. 3 is a schematic configuration diagram of an embodiment of a switching circuit related to a GPS reception signal used in the control device of the present invention.
FIG. 4 is a conceptual diagram illustrating an example of a configuration of a conventional car navigation device.
[Explanation of symbols]
Reference Signs List 10 Control device 12 Car navigation device 14 GPS antenna 16 Engine, computer, etc. 18 Device body 20 Operation switches 22, 24 Switching circuit 26 Control circuit 28 Interface 30 Timer 32 Push button 34 Lamp 36 Capacitor 38, 40 Inductor 42 Switching switch

Claims (5)

A control device that can be set to allow operation of the car navigation device even while the vehicle is running, while the car navigation device is limited in function such that the operation cannot be performed during traveling.
An apparatus main body and an operation switch connected to the apparatus main body,
The device body is used to limit the operation of the car navigation device, and at least one input signal for detecting whether the vehicle is running or stopped and the car navigation to which the input signal is to be input. A switching circuit provided between the device and a control circuit for controlling the switching circuit,
According to the operation of the operation switch, the control circuit controls the switching circuit so that a signal indicating that the vehicle is stopped is supplied to the car navigation device instead of the input signal. The control device controls the switching circuit so that the input signal is supplied to the car navigation device after a predetermined time has elapsed. In the control circuit, at least two types of time are set as the preset predetermined time, and one type of time is selectively selected from the at least two types of time in accordance with an operation by the operation switch. The control device according to claim 1, wherein the control device can be set to: The control circuit controls the switching circuit so that the signal indicating that the vehicle is stopped is supplied to the car navigation device, and then, according to the operation of the operation switch, the predetermined time elapses. The control device according to claim 1, wherein the control circuit controls the switching circuit so that the input signal is supplied to the car navigation device before performing the operation. The control device according to any one of claims 1 to 3, wherein the input signal includes at least one of a vehicle speed pulse signal supplied from an automobile and a GPS reception signal supplied from a GPS antenna. The input signal includes at least a GPS reception signal supplied from a GPS antenna,
The switching circuit includes a capacitor, first and second inductors, and a changeover switch as a circuit related to the GPS reception signal,
The capacitor is connected between the GPS antenna and the car navigation device; the first inductor is connected between the car navigation device and one terminal of the changeover switch; Is connected between the GPS antenna and the other terminal of the changeover switch,
The changeover switch is set to a first state or a second state by the control circuit,
When the changeover switch is in the first state, power supplied from the car navigation device to the GPS antenna is shut off by the changeover switch, and the car navigation device outputs the GPS reception signal instead of the stop signal. Is supplied, indicating that
When the changeover switch is in the second state, power is supplied from the car navigation device to the GPS antenna via the first inductor, the changeover switch, and the second inductor, and power is generated by the GPS antenna. The control device according to claim 1, wherein the received GPS signal is supplied to the car navigation device via the capacitor.

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