CN1928497B - car navigator architecture device - Google Patents

Abstract

The invention discloses a car navigator architecture, which includes a hand-held car navigator and a car audio system, and also includes a signal switching device connected to the hand-held car navigator to transmit navigation signals; connected to the car audio system The device transmits audio signals and control signals; it is also connected to the vehicle to receive signals from the vehicle. Adopt the technical solution of the present invention, adopt a kind of car navigator structure disclosed by the present invention on the basis of the car navigator based on the hand-held device and on the premise of not changing the original car audio, add a signal for connecting the whole car The transition box is used to provide auxiliary signals for improving the performance of the navigator to achieve the purpose of taking into account both low price and high performance.

Description

car navigator architecture device

technical field

The invention relates to the fields of car infotainment, car navigation, car audio, and personal hand-held devices, and more specifically, the invention relates to a hand-held car navigator.

Background technique

From the perspective of the degree of integration with the car, the current car navigator is divided into two categories: one is a navigator that is completely developed and designed according to the requirements of the car's shape, electrical and mechanical interfaces, and in accordance with the technical requirements of the original factory; The instrument is highly integrated with the vehicle, and most of them integrate the gyroscope, and the vehicle speed signal, reversing signal, etc. are involved in the operation of the navigator. At the same time, the navigation prompt voice can be played through the car audio, and the navigation voice prompt can be realized. It can reduce the volume of music or even mute it from time to time; its actual use effect is very good, but the price is relatively high, and users cannot carry it with them after getting off the car. This type of navigator is basically used in the original factory; with reference to Fig. 1, Fig. 1 shows an example of this type of car navigator (integrated car audio function).

Another type of car navigator is based on handheld devices, which are not integrated with the whole vehicle. Only get power supply, no speed signal and reversing signal, and no gyro auxiliary positioning, and because it is after-sales modification, it is generally difficult to find a position and installation method for the GPS antenna that can receive good signals and be reliably fixed; therefore, in practice In use, the positioning accuracy is relatively poor, especially when the GPS satellite signal reception is not good under the viaduct or near high-rise buildings; and because it is not connected to the car audio, the navigation prompt voice can only be through the speaker that comes with the handheld device The navigation prompt voice may not be heard clearly when the car audio is playing music; but its advantage is that the price is relatively low, there are many suitable models, and users of such products based on PDA can carry them with them after getting off the car. This type of car navigator is mostly used for after-sales modification. Referring to Fig. 2, Fig. 2 is an example of this type of car navigator.

Although the first type of car navigator as mentioned above works well, it is expensive because a navigator is specially developed for one or a series of models; It is too simple to connect with the whole vehicle. Compared with the first type of car navigator, it mainly has the following disadvantages:

- GPS signal reception is sometimes unstable

- Positioning accuracy is not high

-Navigation prompts are easily lost in the music played by the car stereo and ignored

So just need a kind of car navigator that solves current car navigator and can not take into account low price and high performance defect.

Contents of the invention

The purpose of the present invention is to provide a low-cost and high-performance hand-held car navigator on the premise of not changing the original car audio, and adding a signal for connecting the whole car to provide a car navigator for improving the navigator. Auxiliary signaling device for performance.

According to the present invention, a car navigator architecture is provided, including a hand-held car navigator and a car audio system, and also includes a signal switching device connected to the hand-held car navigator to transmit navigation signals; connected to the car audio system The device transmits audio signals and control signals; it is also connected to the vehicle to receive signals from the vehicle.

According to an embodiment of the present invention, the signal conversion device has a built-in gyroscope.

According to an embodiment of the present invention, the signal conversion device includes three interfaces: the vehicle interface, through which the signal conversion device exchanges vehicle signals with the vehicle; the vehicle audio interface, the signal The conversion device outputs audio to the vehicle audio through the vehicle audio interface, and performs interactive control; the handheld device interface, the signal conversion device receives the working power through the handheld device interface and performs navigation signal exchange with the handheld car navigator .

According to an embodiment of the present invention, the vehicle signal includes a power signal, an ignition signal, a backlight signal, a reversing signal, a vehicle speed signal, and a GPS signal.

According to an embodiment of the present invention, the original vehicle is equipped with a GPS antenna, and the GPS signal in the vehicle signal is provided to the signal switching device by the GPS antenna.

According to an embodiment of the present invention, the signal conversion device converts the audio output of the hand-held car navigator into the car audio, and enables the user to control the multimedia function of the hand-held car navigator through the car audio.

According to an embodiment of the present invention, the car audio system in the framework realizes the original sound function; and the hand-held car navigator realizes navigation and multimedia playback functions; instrument, vehicle, and car audio together to achieve the following functions: to obtain vehicle speed signals, reversing signals and gyroscope signals and to enhance GPS signals; the handheld car navigator can be charged through a signal transfer device; As soon as the instrument is connected to the signal transfer device, a series of automatic actions are completed, including: automatically booting up and running navigation or multimedia programs, adjusting the backlight of the handheld device screen to the brightest, changing the GPS signal to the signal transfer device, converting the signal from the The various signals acquired in the adapter device participate in the navigation calculation, mute the speakers of the handheld car navigator and transmit various audio signals to the car audio speakers.

Adopt the technical scheme of the present invention, adopt a kind of car navigator architecture disclosed by the present invention on the basis of the car navigator based on the hand-held device and on the premise of not changing the original car audio, add a signal for connecting the whole car The transition box is used to provide auxiliary signals for improving the performance of the navigator to achieve the purpose of taking into account both low price and high performance.

Description of drawings

The above and other features, properties and advantages of the present invention will be further described below in conjunction with the accompanying drawings and embodiments, in which the same reference numerals represent the same features throughout, wherein,

Fig. 1 is the schematic diagram of first class car navigator in the prior art;

Fig. 2 is the schematic diagram of the second type car navigator in the prior art;

FIG. 3 is an architecture of a car navigation system according to an embodiment of the present invention.

Detailed ways

The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

Referring to FIG. 3 , FIG. 3 is a structure of a navigation system according to an embodiment of the present invention. According to an embodiment of the present invention, a car navigator architecture 100 is provided, which includes a hand-held car navigator 102 and a car audio system 104, and also includes a signal switching device 106 connected to the hand-held car navigator 102 to transmit navigation signal; connected to the car audio equipment 104, to transmit audio signals and control signals; also connected to the vehicle, to receive the signal of the vehicle.

According to an embodiment of the present invention, the signal conversion device 106 has a built-in gyroscope 107 .

According to an embodiment of the present invention, the signal conversion device 106 includes three interfaces:

The vehicle interface, the signal transfer device 106 exchanges the vehicle signal with the vehicle through the vehicle interface. In the embodiment shown in Figure 3, the vehicle signal includes a power signal, an ignition signal, a backlight signal, a reversing signal, a vehicle speed signal, GPS signal. If the original vehicle is equipped with a GPS antenna, the GPS signal in the vehicle signal is provided to the signal transfer device by the GPS antenna. For example, in FIG. 3 , the GPS signal in the vehicle signal is provided by the GPS antenna 108 .

The car audio interface, the signal transfer device 106 outputs audio to the car audio 104 through the car audio interface, and performs interactive control. As shown in FIG. 3 , the on-vehicle impact interface also has a CD changer interface, and the signal conversion device 106 can be used to control the CD player in the on-vehicle audio system 104 .

Handheld device interface, the signal transfer device 106 receives working power through the handheld device interface and exchanges navigation signals with the handheld car navigator.

According to an embodiment of the present invention, the signal conversion device 106 converts the audio output of the handheld car navigator 102 into the car audio system 104 , and enables the user to control the multimedia function of the handheld car navigator 102 through the car audio system 104 . Simultaneously, the car stereo 104 in the car navigator framework 100 of the present invention realizes original sound function; And the hand-held car navigator 102 realizes navigation and multimedia playing function; , vehicle, car stereo 104 (being complete car navigator framework 100) realize following function together:

Acquire vehicle speed signal, reversing signal and gyroscope signal and enhance GPS signal;

The hand-held car navigator can be charged through the signal conversion device;

Once the hand-held car navigator is connected to the signal transfer device, it will complete a series of automatic actions, including: automatically power on and start running navigation or multimedia programs, adjust the backlight of the handheld device screen to the brightest, and change the GPS signal to the signal transfer device to obtain , Incorporate various signals obtained from the signal transfer device into the navigation calculation, mute the speaker of the hand-held car navigator and transmit various audio signals to the car audio speaker.

To sum up, in order to achieve the purpose of both low price and high performance, the present invention is based on the car navigator based on the handheld device and on the premise of not changing the original car audio system, and adds a signal switcher for connecting the whole car. box to provide auxiliary signals to improve the performance of the navigator.

The signal transition box of the present invention provides the following auxiliary signals to the car navigator based on the handheld device through an interface compatible with the handheld device (including a data channel and a power interface): gyroscope (built-in), vehicle speed signal (obtained from the whole vehicle) , Reversing signal (obtained from the vehicle), power signal (obtained from the vehicle).

Simultaneously, in order to realize the purpose that the car audio system can reduce the volume of music or mute when the navigation voice prompts, and make full use of the multimedia function (such as MP3 playback) of the handheld device itself, the signal transfer box of the present invention will also be based on the handheld device The audio output of the car navigator is converted into the car audio, and the user can control the multimedia function of the handheld device through the car audio.

In addition, in order to ensure that the car navigator can obtain stable and reliable GPS signals, if the original car is equipped with a GPS antenna, it can be connected to the adapter box of the present invention to be used by the car navigator.

Although the technical solution of the present invention has been described above in conjunction with preferred embodiments, those skilled in the art should understand that various modifications or changes to the above-mentioned embodiments are foreseeable, which should not be regarded as exceeding the The protection scope of the present invention, therefore, the protection scope of the present invention is not limited to the specific described embodiments above, but should be the broadest scope consistent with the innovative features disclosed herein.

Claims (6)

1. a navigating instrument framework for automobiles comprises hand-held type automobile navigating instrument and vehicle audio, it is characterized in that, also comprises a signal adapting device, is connected to described hand-held type automobile navigating instrument, the transmission navigation signal; Be connected to described on-vehicle acoustic apparatus, transmitting audio signal and control signal; Also be connected to car load, receive the car load signal;

Wherein, the vehicle audio in the described framework is realized original acoustic function; Described hand-held type automobile navigating instrument is realized navigation and multi-media player function; Described hand-held type automobile navigating instrument by the signal adapting device combination, car load, vehicle audio are achieved as follows function together:

Obtain vehicle speed signal, astern signal and gyroscope signal and strengthened gps signal;

Described hand-held type automobile navigating instrument charges by signal adapting device;

Described hand-held type automobile navigating instrument one inserts signal adapting device and promptly finishes a series of auto-actions, comprising: Auto Power On and start the operation navigation or Multimedia Program, with the handheld device screen backlight transfer to the brightest, gps signal change the various signals that obtain, will from signal adapting device, obtain by signal adapting device participate in the navigation operations, with hand-held type automobile navigating instrument loudspeaker quiet and various audio signal transmission to the vehicle audio loudspeaker.

2. navigating instrument framework for automobiles as claimed in claim 1 is characterized in that described signal adapting device is built-in with a gyroscope.

3. navigating instrument framework for automobiles as claimed in claim 1 or 2 is characterized in that, described signal adapting device comprises three interfaces:

The car load interface, described signal adapting device is by described car load interface and car load exchange car load signal;

Vehicle audio interface, described signal adapting device pass through described vehicle audio interface to the vehicle audio output audio, and control alternately;

The handheld device interface, described signal adapting device receives working power and carries out the navigation signal exchange with the hand-held type automobile navigating instrument by described handheld device interface.

4. the framework of a kind of auto navigation instrument as claimed in claim 3 is characterized in that, described car load signal comprises power supply signal, ignition signal, backlight signal, astern signal, vehicle speed signal, gps signal.

5. navigating instrument framework for automobiles as claimed in claim 4 is characterized in that former car is equipped with gps antenna, and the gps signal in the described car load signal offers described signal adapting device by described gps antenna.

6. navigating instrument framework for automobiles as claimed in claim 1 or 2, it is characterized in that, described signal adapting device is input to the audio frequency output conversion of hand-held type automobile navigating instrument in the vehicle audio, and makes the multimedia function of user by vehicle audio control hand-held type automobile navigating instrument.

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