CN101408437B

Movatterモバイル変換

Info

Publication number: CN101408437B
Application number: CN2007101631148A
Authority: CN
Inventors: 陈俞; 游景翔; 杨泰昇
Original assignee: Elitegroup Computer Systems Co Ltd
Current assignee: Elitegroup Computer Systems Co Ltd
Priority date: 2007-10-08
Filing date: 2007-10-08
Publication date: 2012-02-29
Anticipated expiration: 2027-10-08
Also published as: CN101408437A

Abstract

The invention relates to a navigation system and a portable head-up display thereof. The navigation system comprises a navigation device and a portable head-up display, wherein the navigation device generates an instruction with navigation information, and the portable head-up display receives and processes the instruction with the navigation information in a wired or wireless mode and displays icon data corresponding to the navigation information. In addition, the portable head-up display can also play audio data corresponding to the navigation information. Therefore, a user with a personal navigation device can add the portable head-up display in the vehicle, and the effect of displaying navigation information on the windshield can be achieved.

Description

Translated fromChinese

导航系统及其可携式抬头显示器Navigation system and its portable head-up display

技术领域technical field

本发明涉及的是一种导航系统，特别涉及的是一种结合可携式抬头显示器的导航系统。The invention relates to a navigation system, in particular to a navigation system combined with a portable head-up display.

背景技术Background technique

目前，导航装置已逐渐普遍，越来越多驾驶者依赖导航装置提供行驶所需的信息，例如地图信息、到达目的地的路线规划与导航信息等等。导航装置可大略分为车用导航装置与个人导航装置。车用导航装置是车辆出厂时便内建在车用计算机中，其屏幕与操作接口配置在车辆中控台中。而个人导航装置是一可携式电子装置，其不与车用计算机连接，使用者可在徒步时或驾驶时使用。然而，目前的导航装置都有屏幕位置不佳或是屏幕过小，导致驾驶者在行车时，必须将视线移开行驶道路来观看导航装置，甚至必须分心去辨识导航信息，无形中增加驾驶的危险因子。At present, navigation devices have gradually become popular, and more and more drivers rely on the navigation devices to provide the information needed for driving, such as map information, route planning and navigation information to the destination, and so on. Navigation devices can be roughly divided into car navigation devices and personal navigation devices. The vehicle navigation device is built into the vehicle computer when the vehicle leaves the factory, and its screen and operation interface are configured in the vehicle center console. And the personal navigation device is a portable electronic device, which is not connected with the vehicle computer, and the user can use it when walking or driving. However, the current navigation devices all have poor screen positions or too small screens, causing the driver to look away from the road to watch the navigation device when driving, or even distracted to identify the navigation information, which virtually increases the driving force. risk factors.

有鉴于导航装置所引起的问题，有些车辆便于驾驶座前方设置一抬头显示器(head-up display)来显示导航信息，例如美国专利号6735517所公开的「Wind shielddisplay for an avigation system」，如图1所示，抬头显示器与车用导航装置结合，并在挡风玻璃上投影出导航信息，如图中所示的转弯箭头图标。然而，目前有内建抬头显示器的车辆仍是少数价位较高的车辆，并不普与。此外，越来越多的手机已内建导航系统，所以有许多使用者拥有个人导航装置，也在驾驶车辆时使用这种的手机来导航。因此，如何让这类的使用者也可享受到抬头显示的功效，降低行驶车辆的风险，是一个亟待解决的问题。In view of the problems caused by the navigation device, some vehicles are convenient to install a head-up display (head-up display) in front of the driver's seat to display navigation information, such as the "Wind shield display for an avigation system" disclosed in US Patent No. 6735517, as shown in Figure 1 As shown, the head-up display is combined with the car navigation device, and the navigation information is projected on the windshield, such as the turn arrow icon shown in the figure. However, vehicles with built-in head-up displays are still a small number of vehicles with relatively high prices and are not popular. In addition, more and more mobile phones have built-in navigation systems, so many users have personal navigation devices and use such mobile phones for navigation when driving vehicles. Therefore, how to make such users also enjoy the effect of the head-up display and reduce the risk of driving vehicles is an urgent problem to be solved.

有鉴于上述的各项问题，为了能够兼顾解决的，本发明人基于多年研究开发与诸多实务经验，提出一种导航系统及其可携式抬头显示器，以作为改善上述缺点的实现方式与依据。In view of the above problems, in order to solve them, the inventor proposes a navigation system and a portable head-up display based on many years of research and development and many practical experiences, as the implementation method and basis for improving the above shortcomings.

发明内容Contents of the invention

有鉴于此，本发明的目的就是在提供一种导航系统及其可携式抬头显示器，以提高导航系统与抬头显示器的使用便利性。In view of this, the object of the present invention is to provide a navigation system and a portable head-up display thereof, so as to improve the convenience of using the navigation system and the head-up display.

根据本发明的目的，提出一种导航系统，其包含一导航装置与一可携式抬头显示器。导航装置是产生一具有导航信息的指令，而可携式抬头显示器接收并处理此具有导航信息的指令，并显示一对应此导航信息的图标数据。According to the purpose of the present invention, a navigation system is proposed, which includes a navigation device and a portable head-up display. The navigation device generates an instruction with navigation information, and the portable head-up display receives and processes the instruction with navigation information, and displays a pair of icon data corresponding to the navigation information.

此外，可携式抬头显示器还可播放一对应导航信息的音讯数据。In addition, the portable head-up display can also play a pair of audio data corresponding to navigation information.

再者，本发明还提出一种可携式抬头显示器，用在显示由一远程导航装置所提供的一导航信息，此可携式抬头显示器包含一电源供应模块、一数据传输模块、一显示模块、一储存模块与一控制模块。电源供应模块用以提供可携式抬头显示器的操作电源。数据传输模块用以接收一具有此导航信息的指令。储存模块用以储存复数个图标数据，而控制模块耦接数据传输模块、显示模块与储存模块，用以处理指令以取得此导航信息，且从储存模块中选出对应此导航信息的图标数据，并驱动(drive)显示模块显示所选的图标数据。Furthermore, the present invention also proposes a portable head-up display for displaying a navigation information provided by a remote navigation device, the portable head-up display includes a power supply module, a data transmission module, a display module , a storage module and a control module. The power supply module is used for providing the operation power of the portable head-up display. The data transmission module is used for receiving an instruction with the navigation information. The storage module is used to store a plurality of icon data, and the control module is coupled to the data transmission module, the display module and the storage module, and is used to process instructions to obtain the navigation information, and select the icon data corresponding to the navigation information from the storage module, And drive the display module to display the selected icon data.

此外，可携式抬头显示器还可包含一音讯输出模块，而储存模块还储存复数个音讯数据，控制模块从储存模块中选出对应导航信息的音讯数据，并驱动音讯输出模块播放所述的所选的音讯数据。In addition, the portable head-up display can also include an audio output module, and the storage module also stores a plurality of audio data, and the control module selects the audio data corresponding to the navigation information from the storage module, and drives the audio output module to play the audio data. selected audio data.

此外，可携式抬头显示器还可包含一音讯解压缩模块用以解压缩所述的音讯数据。In addition, the portable head-up display may also include an audio decompression module for decompressing the audio data.

附图说明Description of drawings

图1为现有技艺的抬头显示器的示意图；FIG. 1 is a schematic diagram of a head-up display in the prior art;

图2为本发明的导航系统的实施例的方块图；Fig. 2 is the block diagram of the embodiment of navigation system of the present invention;

图3为本发明的导航系统的实施例的应用示意图；Fig. 3 is the application schematic diagram of the embodiment of navigation system of the present invention;

图4为本发明的可携式抬头显示器的实施例的方块图；4 is a block diagram of an embodiment of the portable head-up display of the present invention;

图5A为本发明的以VFD灯管来显示导航信息的一范例的示意图；以及FIG. 5A is a schematic diagram of an example of displaying navigation information with a VFD lamp of the present invention; and

图5B为本发明的以VFD灯管来显示导航信息的另一范例的示意图。FIG. 5B is a schematic diagram of another example of displaying navigation information with a VFD lamp according to the present invention.

附图标记说明：2-导航系统；20，30-导航装置；201-定位模块；202-输入模块；203-导航模块；204-电子地图数据库；205-第一数据传输模块；206-位置信息；207，215-电源供应模块；21，31，4-可携式抬头显示器；211-控制模块；212-第二数据传输模块；213-储存模块；214，414-显示模块；216，4131-图标数据；22-具有导航信息的指令；32，4151-车用充电模块；33-图标影像；39-挡风玻璃；411-微控制器；412-蓝芽传输模块；413-内建内存；4132-查询表；4141-显示控制器；4142，501～509-VFD灯管；4152-充电电池；416-ROM；4161-MP3档案；417-音讯解压缩模块；以及418-音讯输出模块。Description of reference signs: 2-navigation system; 20, 30-navigation device; 201-positioning module; 202-input module; 203-navigation module; 204-electronic map database; 205-first data transmission module; 206-location information 207,215-power supply module; 21,31,4-portable head-up display; 211-control module; 212-second data transmission module; 213-storage module; 214,414-display module; 216,4131- Icon data; 22-command with navigation information; 32, 4151-vehicle charging module; 33-icon image; 39-windshield; 411-microcontroller; 412-Bluetooth transmission module; 413-built-in memory; 4132-inquiry table; 4141-display controller; 4142, 501-509-VFD lamp; 4152-rechargeable battery; 416-ROM; 4161-MP3 file; 417-audio decompression module; and 418-audio output module.

具体实施方式Detailed ways

以下结合附图，对本发明上述的和另外的技术特征和优点作更详细的说明。The above and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings.

以下将参照相关图标，说明依本发明较佳实施例的导航系统及其可携式抬头显示器。请参阅图2，其为本发明的导航系统的实施例的方块图。图中，导航系统2包含一导航装置20与一可携式抬头显示器21。导航装置20是用以产生一具有导航信息的指令22，其包含一定位模块201、一输入模块202、一导航模块203、一电子地图数据库204、一第一数据传输模块205与一电源供应模块207。电源供应模块207用以提供导航装置20的操作电源，其较佳的是一电池模块或一车用充电模块。定位模块201用以提供导航装置20的位置信息206，例如导航装置20所在位置的坐标或是经纬度数据，定位模块201较佳的是包含一全球定位系统(Global Positioning System，GPS)模块、一数字罗盘(digital compass)或一陀螺仪(gyroscope)。GPS模块可接收复数个GPS卫星的GPS讯号，并根据此些GPS讯号计算出其所在位置的经纬度数据。数字罗盘用以量测导航装置20的方向方位，而陀螺仪用以量测导航装置20的转向方位，特别是当导航装置20无较大位移而转向时，数字罗盘与陀螺仪可提供转向信息，以弥补GPS模块的不足。The navigation system and its portable head-up display according to a preferred embodiment of the present invention will be described below with reference to related figures. Please refer to FIG. 2 , which is a block diagram of an embodiment of the navigation system of the present invention. In the figure, the navigation system 2 includes a navigation device 20 and a portable head-up display 21 . The navigation device 20 is used to generate acommand 22 with navigation information, which includes a positioning module 201, an input module 202, a navigation module 203, an electronic map database 204, a first data transmission module 205 and a power supply module 207. The power supply module 207 is used to provide the operating power of the navigation device 20 , which is preferably a battery module or a vehicle charging module. The positioning module 201 is used to provide theposition information 206 of the navigation device 20, such as the coordinates or latitude and longitude data of the position of the navigation device 20. The positioning module 201 preferably includes a Global Positioning System (Global Positioning System, GPS) module, a digital A digital compass or a gyroscope. The GPS module can receive GPS signals from multiple GPS satellites, and calculate the latitude and longitude data of its location according to these GPS signals. The digital compass is used to measure the orientation of the navigation device 20, and the gyroscope is used to measure the steering orientation of the navigation device 20, especially when the navigation device 20 turns without a large displacement, the digital compass and the gyroscope can provide steering information , to make up for the lack of GPS modules.

电子地图数据库204是储存至少一具有道路信息的电子地图。输入模块202用以提供使用者输入一目的地，导航模块203是以目前位置为出发地，根据电子地图、出发地与目的地，计算出一导航路线。接着，导航模块203根据此导航路线与定位模块201所提供的实时位置信息，产生一具有导航信息的指令22，而导航信息可为例如前方300公尺请左转或此路段速限为时速50公里，请小心驾驶的信息。导航装置20通过第一数据传输模块205传送指令22至可携式抬头显示器21。其中，第一数据传输模块205可为一无线讯号传输模块，例如蓝芽传输模块、射频传输模块或红外线传输模块，或是一有线传输模块，例如USB传输模块或IEEE1394模块。The electronic map database 204 stores at least one electronic map with road information. The input module 202 is used to provide the user to input a destination, and the navigation module 203 calculates a navigation route based on the electronic map, the departure place and the destination, taking the current location as the starting point. Then, the navigation module 203 generates aninstruction 22 with navigation information according to the real-time position information provided by the navigation route and the positioning module 201, and the navigation information can be, for example, please turn left 300 meters ahead or the speed limit of this section is 50 Kilometers, information for driving carefully. The navigation device 20 transmits theinstruction 22 to the portable HUD 21 through the first data transmission module 205 . Wherein, the first data transmission module 205 can be a wireless signal transmission module, such as a Bluetooth transmission module, a radio frequency transmission module or an infrared transmission module, or a wired transmission module, such as a USB transmission module or an IEEE1394 module.

导航模块203较佳的是以处理器执行一应用程序的软件方式来实现，应用程序可包含一路线规划程序与一行驶导航程式。一般而言，现有的导航装置是在本身的屏幕上显示导航信息，因此不具有将具有导航信息的指令对外传输的功能。但是可通过于行驶导航程式增加对外传输的程序代码的方式来实施，当处理器执行行驶导航程式时，除了驱动导航装置的屏幕显示导航信息外，也产生一具有导航信息的指令并传送到数据传输模块，接着传送至远程。The navigation module 203 is preferably implemented by a processor executing an application program in software, and the application program may include a route planning program and a driving navigation program. Generally speaking, existing navigation devices display navigation information on their own screens, and therefore do not have the function of transmitting commands with navigation information to the outside. However, it can be implemented by adding program codes for external transmission to the driving navigation program. When the processor executes the driving navigation program, in addition to driving the screen of the navigation device to display navigation information, an instruction with navigation information is also generated and sent to the data. The transmission module is then transmitted to the remote.

上述的导航装置20是以一完整型导航装置，其定位模块与导航模块都安装在同一机壳中，来举例说明，但并不以此为限，凡可传送一具有导航信息的指令的导航装置都在本发明的保护范围内。例如，无内建GPS模块的导航装置，其GPS模块是以外接方式连接导航装置，也在本发明的保护范围内。例如，无内建电子地图数据库与导航模块的导航装置，其是通过无线网络连接一导航服务器，由导航服务器提供电子地图与路线规划服务，也在本发明的保护范围内。The above-mentioned navigation device 20 is a complete navigation device, and its positioning module and navigation module are all installed in the same casing for illustration, but it is not limited thereto. Any navigation device that can transmit an instruction with navigation information devices are within the protection scope of the present invention. For example, a navigation device without a built-in GPS module, whose GPS module is externally connected to the navigation device, is also within the protection scope of the present invention. For example, a navigation device without a built-in electronic map database and a navigation module is connected to a navigation server through a wireless network, and the navigation server provides electronic maps and route planning services, which is also within the protection scope of the present invention.

可携式抬头显示器21是用以显示一对应此导航信息的图标数据，其包含一控制模块211、一第二数据传输模块212、一储存模块213、一显示模块214与一电源供应模块215。控制模块211是耦接第二数据传输模块212、显示模块214与储存模块213。电源供应模块215是提供可携式抬头显示器21的操作电源，其较佳的是一电池模块或一车用充电模块。储存模块213用以储存复数个图标数据216。储存模块213较佳的是包含一只读存储器(ROM)、一动态存取内存(RAM)、一闪存(flash memory)或一内建在控制模块211的内存。第二数据传输模块212是接收一指令22并传送至控制模块211。控制模块211处理并分析指令22以取得导航信息，且从储存模块213选出对应此导航信息的图标数据216，并驱动(drive)显示模块214显示此所选的图标数据。The portable head-up display 21 is used to display an icon data corresponding to the navigation information, and includes a control module 211 , a second data transmission module 212 , a storage module 213 , a display module 214 and apower supply module 215 . The control module 211 is coupled to the second data transmission module 212 , the display module 214 and the storage module 213 . Thepower supply module 215 provides the operating power of the portable head-up display 21 , which is preferably a battery module or a vehicle charging module. The storage module 213 is used for storing a plurality of icon data 216 . The storage module 213 preferably includes a read-only memory (ROM), a dynamic access memory (RAM), a flash memory (flash memory) or a built-in memory in the control module 211 . The second data transmission module 212 receives aninstruction 22 and transmits it to the control module 211 . The control module 211 processes and analyzes theinstruction 22 to obtain navigation information, selects icon data 216 corresponding to the navigation information from the storage module 213 , and drives the display module 214 to display the selected icon data.

其中，可携式抬头显示器21视需要可包含一音讯输出模块，且储存模块213储存复数个音讯数据，则控制模块211从储存模块213选出对应导航信息的音讯数据，并驱动此音讯输出模块播放所选的音讯数据。若音讯数据为一压缩音讯档案，例如MP3档案或WMA档案，则可携式抬头显示器21可包含一音讯解压缩模块，例如MP3解压缩芯片或WMA解压缩芯片，用以解压缩此音讯数据。Wherein, the portable head-up display 21 may include an audio output module as required, and the storage module 213 stores a plurality of audio data, then the control module 211 selects the audio data corresponding to the navigation information from the storage module 213, and drives the audio output module Play the selected audio data. If the audio data is a compressed audio file, such as an MP3 file or a WMA file, the portable head-up display 21 may include an audio decompression module, such as an MP3 decompression chip or a WMA decompression chip, for decompressing the audio data.

显示模块214包含一显示控制器与至少一显示组件，显示控制器是根据控制模块211所传送的控制讯号来控制显示组件来显示出一欲显示的图标。显示组件为真空萤光显示(Vacuum Fluorescent Display，VFD)灯管、发光二极管(LightEmitting Diode，LED)、液晶显示器(LCD)、薄膜晶体管液晶显示器(TFT-LCD)、有机发光二极管(OLED)、STNLCD或DSTNLCD。The display module 214 includes a display controller and at least one display component. The display controller controls the display component to display an icon to be displayed according to the control signal sent by the control module 211 . The display components are vacuum fluorescent display (Vacuum Fluorescent Display, VFD) lamp, light emitting diode (LightEmitting Diode, LED), liquid crystal display (LCD), thin film transistor liquid crystal display (TFT-LCD), organic light emitting diode (OLED), STNLCD or DSTNLCD.

请参阅图3，其为本发明的导航系统的实施例的应用示意图。图中，导航装置30是通过蓝芽传输方式将具有导航信息的指令传送到可携式抬头显示器31。可携式抬头显示器31是设置在驾驶座前方，经过处理与分析此指令以取得导航信息，并显示与投射对应此导航信息的图标影像33，其为一左转图标，至车辆的挡风玻璃39上。可携式抬头显示器31是以车用充电模块32连接点烟器来提供操作电源。Please refer to FIG. 3 , which is an application diagram of an embodiment of the navigation system of the present invention. In the figure, thenavigation device 30 transmits the instructions with navigation information to the portable head-updisplay 31 through Bluetooth transmission. The portable head-updisplay 31 is arranged in front of the driver's seat, after processing and analyzing the command to obtain navigation information, and display and project anicon image 33 corresponding to the navigation information, which is a left turn icon, to the windshield of thevehicle 39 on. The portable head-updisplay 31 is connected to a cigarette lighter with acar charging module 32 to provide operating power.

由上述说明可得知，若使用者已拥有一个人导航装置(Personal NavigationDevice，PNA)，例如一有导航功能的智能型手机或个人数字助理，且此PNA可支持将一具有导航信息的指令对外传输，则使用者可在车辆中增设本发明的可携式抬头显示器31，便可享受到在挡风玻璃显示导航信息的功效，并解决因PNA的屏幕过小使得驾驶者不易观看到导航图标的缺点。It can be seen from the above description that if the user already has a Personal Navigation Device (PNA), such as a smart phone or personal digital assistant with navigation function, and this PNA can support sending an instruction with navigation information to the outside world transmission, the user can add the portable head-updisplay 31 of the present invention in the vehicle, and can enjoy the effect of displaying navigation information on the windshield, and solve the problem that the driver cannot easily see the navigation icons because the screen of the PNA is too small Shortcomings.

请参阅图4，其为本发明的可携式抬头显示器的另一实施例的示意图。图中，可携式抬头显示器4包含一微控制器411、一蓝芽传输模块412、一显示模块414、一车用充电模块4151、一充电电池4152、一ROM416、一音讯解压缩模块417与一音讯输出模块418。其中，ROM416是储存复数个MP3档案4161，而显示模块具有一显示控制器4141与复数个VFD灯管4142。微控制器411具有一内建内存413，其储存复数个图标数据4131与一查询表4132。查询表4132是纪录所有导航信息与图标数据与MP3档案的对映关系(mapping relationship)。Please refer to FIG. 4 , which is a schematic diagram of another embodiment of the portable head-up display of the present invention. In the figure, the portable head-updisplay 4 includes amicrocontroller 411, abluetooth transmission module 412, adisplay module 414, avehicle charging module 4151, a rechargeable battery 4152, a ROM416, an audio decompression module 417 and Anaudio output module 418 . Among them, the ROM416 stores a plurality of MP3 files 4161 , and the display module has a display controller 4141 and a plurality of VFD lamps 4142 . Themicrocontroller 411 has a built-inmemory 413 which stores a plurality of icon data 4131 and a look-up table 4132 . The query table 4132 records the mapping relationship (mapping relationship) between all navigation information and icon data and MP3 files.

蓝芽传输模块接收到具有导航信息的指令22后，便传送指令22至微控制器411。微控制器411处理与分析指令22后取得此导航信息，并根据查询表4132判断出与此导航信息相对应的图标数据与MP3档案。接着，微控制器411从内建内存413读出此相对应的图标数据，并传送至显示控制器4141。显示控制器4141根据所接收到的图标数据来控制每一VFD灯管4142的亮暗，以显示出导航信息。接着，微控制器411控制音讯解压缩模块417解压缩所选的MP3档案，将解压缩产生的模拟音讯数据传送至音讯输出模块418播出。请注意，上述的模拟音讯数据的产生与输出流程仅为举例，并不以此为限，任何可达到相同功效的电路设计都在本发明的保护范围内。After receiving thecommand 22 with navigation information, the Bluetooth transmission module transmits thecommand 22 to themicrocontroller 411 . Themicrocontroller 411 obtains the navigation information after processing and analyzing theinstruction 22, and judges the icon data and MP3 file corresponding to the navigation information according to the lookup table 4132. Next, themicrocontroller 411 reads out the corresponding icon data from the built-inmemory 413 and sends it to the display controller 4141 . The display controller 4141 controls the brightness of each VFD lamp 4142 according to the received icon data to display navigation information. Next, themicrocontroller 411 controls the audio decompression module 417 to decompress the selected MP3 file, and transmits the decompressed analog audio data to theaudio output module 418 for playback. Please note that the above-mentioned process of generating and outputting analog audio data is just an example, and is not limited thereto. Any circuit design that can achieve the same effect is within the protection scope of the present invention.

如图5A与图5B所示，显示控制器4141可独立控制VFD灯管501～509的亮暗，当VFD灯管501，502，506，507，508，509被点亮而VFD灯管503，504，505维持为暗状态时，则此些VFD灯管是显示出一左转图标，如图5A所示。当VFD灯管504，505，506，507，508，509被点亮而VFD灯管501，502，503维持为暗状态时，则此些VFD灯管是显示出一右转图标，如图5B所示。在此谨以VFD灯管为举例，但并不以此为限，显示模块414可使用多种显示组件来显示出导航信息，例如LED、LCD、TFT-LCD、OLED、STNLCD或DSTNLCD等等，每一种显示组件都有其控制方法与相对应的显示控制器，都在本发明的保护范围内。As shown in Figure 5A and Figure 5B, the display controller 4141 can independently control the brightness and darkness of the VFD lamps 501-509. When 504 and 505 remain in the dark state, these VFD lamps display a left-turn icon, as shown in FIG. 5A . When theVFD lamps 504, 505, 506, 507, 508, 509 are turned on and theVFD lamps 501, 502, 503 remain in a dark state, these VFD lamps display a right turn icon, as shown in Figure 5B shown. Here, a VFD lamp is taken as an example, but it is not limited thereto. Thedisplay module 414 can use various display components to display navigation information, such as LED, LCD, TFT-LCD, OLED, STNLCD or DSTNLCD, etc. Each display component has its control method and corresponding display controller, all of which are within the protection scope of the present invention.

若可携式抬头显示器4被设置在挡风玻璃前，则导航信息的图标影像会投射在挡风玻璃上，图标影像的位置就在驾驶座前方，如此，驾驶者可一边驾驶一边观看导航信息，而降低了分心观看导航信息所导致的车祸风险。If the portable head-updisplay 4 is arranged before the windshield, the icon image of the navigation information will be projected on the windshield, and the position of the icon image is just in front of the driver's seat, so that the driver can watch the navigation information while driving , which reduces the risk of car accidents caused by distracted viewing of navigation information.

以上所述仅为本发明的较佳实施例，对本发明而言仅仅是说明性的，而非限制性的。本专业技术人员理解，在本发明权利要求所限定的精神和范围内可对其进行许多改变，修改，甚至等效，但都将落入本发明的保护范围内。The above descriptions are only preferred embodiments of the present invention, and are only illustrative rather than restrictive to the present invention. Those skilled in the art understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present invention, but all will fall within the protection scope of the present invention.