TWI401416B - Navigation system for vehicles - Google Patents

Description

Car navigation system

The invention relates to a car navigation system, in particular to an in-vehicle navigation system using a mobile phone navigation function.

In the past, when searching for a destination as a destination in an unfamiliar place, it is common to confirm the road, landmark, and residence drawn on the map by map and arrive at the destination. With the development of technology, vehicle navigation systems have begun to be applied to automobiles. After the destination is entered on the input device of the vehicle navigation system, a route to the destination is displayed on the display of the vehicle navigation system to guide the driver to the destination. Since the price of the vehicle navigation system is relatively high, only a part of the vehicle will be installed. Therefore, many drivers cannot enjoy the convenience brought by the vehicle navigation system.

On the other hand, in recent years, the performance of portable electronic devices such as mobile phones and personal digital assistants (PDAs) has rapidly increased, and is moving toward multi-functionality. The data communication function of the portable electronic device besides the call function is being strengthened, and it can provide various information communication services to the user through the Internet, and the navigation function is also one of them. In this way, even if the vehicle is not equipped with a vehicle navigation system, the driver can use the navigation function of the portable electronic device carried in to carry out route navigation.

Whether it is a vehicle navigation system or a portable electronic device with navigation function, when applied to vehicle navigation, it is generally installed/placed on the dashboard of the bridge for the driver to view at any time. But when the driver needs to concentrate on the road ahead, especially when driving on the highway, because the dashboard is in the lower position, the driver must move the line of sight down to view the navigation information, so it can not be in a short time. Pay attention to the road ahead. This will bring driving safety hazards to drivers who cannot simultaneously take into account the road conditions and navigation information.

In view of the above problems, it is necessary to provide a car navigation system that allows the driver to always look forward during navigation and improve driving safety.

An in-vehicle navigation system is applied to a vehicle, and includes a portable electronic device with a navigation function and an image capture device. The portable electronic device has a display screen, a navigation module and a conversion unit. The conversion unit converts the navigation information output by the navigation module into mirror navigation information. The display screen displays navigation information output by the navigation module or mirrored navigation information output via the conversion unit. The imager is attached to the windshield of the vehicle and reflects the mirror navigation information projected by the display screen and transmits the information of the road ahead.

Compared with the prior art, the car navigation system can fully utilize the navigation function of the portable electronic device, and since the navigation information is projected on the front of the driver's line of sight, the driver can view the camera at the same time without looking down. The navigation information and the road ahead avoid the accident when the driver looks down at the instrument and cannot take care of the outside of the vehicle. Therefore, the driving safety can be improved.

100‧‧‧Car navigation system

10‧‧‧Portable electronic devices

11‧‧‧ Input device

13‧‧‧Output device

131‧‧‧ display screen

133‧‧‧Voice device

15‧‧‧Microprocessor

151‧‧‧Navigation module

153‧‧‧ conversion unit

20‧‧ ‧ Imager

1 is a block diagram showing the structure of a preferred embodiment of the in-vehicle navigation system of the present invention.

Referring to FIG. 1 , the car navigation system 100 of the present invention includes a portable electronic device 10 and a camera 20 . The portable electronic device 10 can project the navigation information onto the image capturing device 20, and the image capturing device 20 can display the light emitted by the external scene and the light of the navigation information emitted by the portable electronic device 10 in the human eye. The image is on the plane.

The portable electronic device 10 can be a wireless communication device such as a mobile phone, a personal digital assistant (PDA) or a palmtop computer, and includes an input device 11, an output device 13, and a microprocessor 15 (microcontroller unit). , MCU).

The input device 11 can be a keyboard device of the portable electronic device 100 for inputting a keyword of the navigation information to be learned and inputting a conversion control signal.

The output device 13 includes a display screen 131 for displaying information and a voice device 133 for outputting sound. The display screen 131 is used to display navigation information. The voice device 133 can be a speaker of the portable electronic device 100 for broadcasting navigation information.

The microprocessor 15 includes a navigation module 151 and a conversion unit 153. The navigation module 151 is electrically connected to the input device 11, the output device 13, and the conversion unit 153, respectively. The navigation module 151 can obtain navigation information through the Internet, or can preset an electronic map program for navigation. The navigation module 151 receives the keyword of the navigation information transmitted by the input device, and then passes through the Internet. The road or internal preset electronic map program obtains the corresponding navigation information, and outputs it to the voice device 133 for broadcast and direct output to the display screen 131 display or converted by the conversion unit 153 and then output to the display screen 131 for display. The conversion unit 153 is electrically connected to the input device 11, the navigation module 151 and the display screen 131, and receives the conversion control signal input by the input device 11 to convert the navigation information output by the navigation module 151 into mirror navigation information. The output to the display screen 131 displays the image navigation information. When the image navigation information is displayed on the display screen 131, the navigation information is not reversed when displayed on the display screen 131 as compared with the navigation information that is not converted by the conversion unit 153.

The portable electronic device 10 has a normal navigation mode and a car navigation mode, and can input a conversion control signal through the input device 11 to switch between the two navigation modes. When in the normal navigation mode, the display screen 131 directly receives the navigation information output by the navigation module 151 and displays it, so that the driver can directly view the navigation information through the display screen 131. When in the car navigation mode, the display screen 131 receives the mirror navigation information converted by the conversion unit 153 and displays the image navigation information for the driver to view the navigation information through the camera 20 .

The image capturing device 20 is configured to receive and reflect the mirrored navigation information displayed by the display screen 131, and transmit the light emitted by the external scene to superimpose the light emitted by the external scene and the light of the navigation information emitted by the display screen 131. The image of the human eye is on the plane. The imager 20 is in the form of a film and is made of a semi-reflective and semi-transmissive optical material. In order to facilitate the driver to view the navigation information, the imager 20 can be made of a semi-reflective, semi-transmissive optical material that magnifies the imaged image. After the reflection of the imager 20, the mirrored navigation information displayed by the display screen 131 arrives. The human eye is the normal navigation information. When the in-vehicle navigation system 100 is used for vehicle navigation, the imager 20 is attached to the windshield of the vehicle and is located in front of the driver's line of sight when looking at the camera so that the driver can keep looking forward. View navigation information.

In use, the driver can switch the portable electronic device 10 to the car navigation mode by operating the input device 11, and obtain the navigation information that is desired to be learned by the navigation module 151, and then place the portable electronic device 10 in the block. Before the windshield, the mirrored navigation information displayed on the display screen 131 is projected onto the imager 20 attached to the windshield. The driver can simultaneously view the road ahead and navigation information via the camera 20. At the same time, the voice device 133 of the portable electronic device 100 broadcasts the navigation information and provides a navigation voice prompt to the driver.

It will be appreciated that the imager 20 can be replaced by a windshield made of a semi-reflective, semi-transmissive optical material.

The in-vehicle navigation system can fully utilize the navigation function of the portable electronic device, and because it projects the navigation information in front of the driver's line of sight, the driver can view the navigation information and the road ahead without having to bow down. When driving the driver to look down at the instrument, it is impossible to take into account the situation outside the vehicle and an accident occurs, so that the driving safety can be improved.

100‧‧‧Car navigation system

10‧‧‧Portable electronic devices

11‧‧‧ Input device

13‧‧‧Output device

131‧‧‧ display screen

133‧‧‧Voice device

15‧‧‧Microprocessor

151‧‧‧Navigation module

153‧‧‧ conversion unit

20‧‧ ‧ Imager

Claims (9)

An in-vehicle navigation system is applied to a vehicle, and includes a portable electronic device with a navigation function. The improvement is that the portable electronic device has a display screen, a navigation module and a conversion unit electrically connected to each other. The unit converts the navigation information outputted by the navigation module into mirror navigation information, and the display screen displays navigation information output by the navigation module or mirrored navigation information output through the conversion unit, and the vehicle navigation system further includes an image capturing device, the image capturing device The device is attached to the windshield of the vehicle and reflects the mirror navigation information projected by the display screen and the road condition information of the transmitted vehicle; the mirror navigation information is displayed on the display screen compared to the navigation without conversion by the conversion unit The information is displayed in the horizontal direction when it is displayed on the display screen. The in-vehicle navigation system of claim 1, wherein the portable electronic device further comprises a voice device for broadcasting navigation information output by the navigation module. The in-vehicle navigation system of claim 2, wherein the voice device is a speaker of the portable electronic device. The in-vehicle navigation system of claim 1, wherein the portable electronic device further comprises an input device for inputting a keyword for inquiring navigation information, and inputting a conversion control signal to control the display. The screen selectively displays navigation information output by the navigation module or mirrored navigation information output via the conversion unit. The in-vehicle navigation system of claim 4, wherein the input The device is a keyboard device of the portable electronic device. The in-vehicle navigation system of claim 1, wherein the imager is a film made of a semi-reflective semi-transmissive optical material. The in-vehicle navigation system of claim 6, wherein the imager enlarges the imaged image. The car navigation system of claim 1, wherein the navigation module obtains navigation information through the internet. The car navigation system of claim 1, wherein the navigation module has a navigation electronic map program preset therein.