CN101046508A - LCD brightness controlling method for navigation system - Google Patents
LCD brightness controlling method for navigation system Download PDFInfo
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- CN101046508A CN101046508A CNA2006100253725A CN200610025372A CN101046508A CN 101046508 A CN101046508 A CN 101046508A CN A2006100253725 A CNA2006100253725 A CN A2006100253725A CN 200610025372 A CN200610025372 A CN 200610025372A CN 101046508 A CN101046508 A CN 101046508A
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Abstract
The present invention relates to navigation system, and is especially LCD brightness controlling method for a navigation system capable of dividing the LCD brightness area into several controlling grades based on the use environment and the movable body speed. The LCD brightness controlling method includes the following stages: determining video mode or audio mode based on the user selected function and reading out the background light controlling grade based on the selected mode to control LCD brightness automatically; and controlling the LCD brightness according to whether the movable body runs or not.
Description
Technical field
The present invention relates to navigational system,, the LCD brightness region can be divided into the LCD brightness control method of the navigational system that the grade of several stages controlled particularly along with user's the environment for use and the travel speed of moving body.
Background technology
Generally speaking, the navigational system utilization calculates the current location of moving body from the information that GPS (Global PositioningSystem: below be called GPS) receives, and it is shown on the map on the display screen.
And navigational system can also demonstrate the various required information of travelling, and offers the driver.As: the working direction of moving body, and the distance between the destination, the travel speed that moving body is current, the path that the driver sets before travelling arrives nearest path of destination or the like.
At present, this navigational system (or GPS locating device) is installed on boats and ships widely, and spacecraft on the various moving bodys such as automobile, is used for confirming the current location and the translational speed of moving body, perhaps sets mobile route.Particularly, the expression latitude that the navigational system reception is sent from a plurality of moonlets on the GPS, longitude, the electric wave of height etc., calculate the current position of moving body, the cartographic information that will comprise this current location then offers the driver with the form of the vision and the sense of hearing.
Fig. 1 is the formation synoptic diagram of the automatic dimming device of the existing navigational system of expression.As shown in the figure, by forming: the pick-up unit 10 that detects surrounding brightness with the lower part; Detected analog voltage is divided into the grade of regulation, and converts it to the A/D conversion equipment 20 of digital value; With the output of A/D conversion equipment 20 microcomputer 30 with potentiometer (Potential Meter) the grade point output of regulation grade; The output of microcomputer 30 is become the potentiometer 40 of the analog voltage output of regulation grade; Be used for showing the magnitude of voltage of following potentiometer 40 outputs and the TFT LCD display device 50 of the grade that changes.
Pick-up unit 10 is by forming with the lower part: detect the photoelectric cell (Cds) that surrounding brightness changes; The switch (SW1) of control mains lighting supply; The pull-up resistor that links to each other with switch (SW1) (R1, R2) and the transistor that links to each other with pull-up resistor (Q1).Along with the variation of ambient light, resistance value also changes thereupon, and above-mentioned photoelectric cell (CDS) is according to the variation of resistance value, and output voltage is poor.
The operating process of the legacy devices that is made of above-mentioned parts is described below.With reference to Fig. 1, if the On/Off switch of the background light power supply of the automobile of ILL power supply is connected on the ILL binding post, just the function of dimming is disengaged automatically.
That is,, connect switch (SW1) if link to each other with power supply from the ILL binding post, and connection resistance (R1, R2), transistor (Q1) attrition voltage.The receiving pole current potential of transistor (Q1) is on inferior grade, and therefore, the potential difference (PD) ground connection of the photoelectric cell of pick-up unit 10 (Cds1) becomes 0V, and the dimming function is forced to remove automatically, can only carry out certain illumination.Under the state that switch (SW1) is disconnected, because the magnitude of voltage that spreads out of from photoelectric cell (Cds1) is arranged, so the dimming function is set automatically.
The variation grades of the magnitude of voltage of above-mentioned photoelectric cell (Cds1) is 0V to 5V, and according to sunshine, fluorescent light and incandescent lamp different are exported different electric pressures respectively.Therefore, can obtain following outside brightness changes and the output voltage of variation.
If photoelectric cell (Cds1) detects outside brightness, detected aanalogvoltage is input to A/D conversion equipment 20, again this analogue value is converted to the digital value that can import microcomputer 30.Variation grades with above-mentioned detection device 20 in A/D conversion equipment 20 is divided into the output of 17 grades.Be that the brightness of TFT LCD display device 50 also is divided into some grades and throws light on.
So, from microcomputer 30, according to the voltage of 17 grades of A/D conversion equipment 20, to potentiometer 40 output datas that are positioned at the rear end, these data are consistent with the grade of the resistance value of potentiometer.Be imported into the potentiometer 40 from the relevant output data of the grade point with potentiometer 40 of microcomputer 30 outputs, convert the DC analog voltage output relevant again to above-mentioned data value.Potentiometer 40 is exported to TFT LCD display device 50, can realize the automatic dimming with the corresponding automobile A/V of surrounding brightness system.
But existing automatic dimming device is distinguished time or outside illuminance round the clock, and by day, because the influence of outside illumination, comparatively speaking, the brightness grow of LCD display device and background light for the user, has improved the knowledge ability of debating.But navigational system is gradually to the trend development of digital complexization, and function is more and more, the brightness that existing automatic dimming device can't control corresponding LCD, and this is the problem that exists.
Therefore, do not have and the corresponding LCD brightness control function of the function of navigational system at present, without exception with identical brilliance control LCD, all with identical dynamic picture and pure audio modes such as LCD brilliance control TV, will influence driving because of the waste of electric power and LCD picture like this, this also is the problem that exists.
Summary of the invention
As mentioned above, the present invention researches and develops in order to address the above problem.The objective of the invention is to provide the LCD brightness control method of navigational system for the user, promptly according to the diversified function of navigational system, set the luminance patterns of LCD respectively, then, according to operating function, automatically control with the LCD brightness degree that configures in advance, can also control the brightness of LCD according to the translational speed that the moving body of navigational system is installed.
To achieve these goals, the LCD brightness control method according to navigational system of the present invention has the feature that is made of following two stages:
According to user-selected function button, video mode or audio mode are distinguished, then,, read the value of background light, control LCD brightness according to the associative operation pattern;
In the process of operating, whether travelling from the stage of moving the brightness of controlling LCD according to moving body with the functional mode of selecting.
LCD brightness control method according to navigational system of the present invention has following more satisfactory feature:
Above-mentioned video mode comprises dynamic picture pattern or still frame pattern, and the brightness of control LCD makes the LCD brightness degree of dynamic picture pattern be higher than the LCD brightness degree of still frame pattern.
Above-mentioned moving body is in the process of travelling, if travel with the speed higher than fixing speed, the picture of LCD will be closed, if travel with the speed lower than fixing speed, the brightness of the picture of LCD just dies down; Above-mentioned moving body is when stationary state, and the brightness of the picture of LCD is with regard to grow.
According to the use pattern and the travel speed of above-mentioned navigational system, to store plural LCD background light controlling grade at least respectively.
As mentioned above, LCD brightness control method according to navigational system of the present invention has following effect, operator scheme and travel speed according to the navigational system that diversified function is provided are correspondingly distinguished LCD brightness, it is controlled, and to the environment that the driver provides convenience, the accident that prevents is in possible trouble.
Description of drawings
Fig. 1 is the formation synoptic diagram of the automatic dimming device of the existing navigational system of expression.
Fig. 2 is the formation synoptic diagram of expression according to the navigational system of embodiments of the invention.
Fig. 3 is the formation synoptic diagram of expression according to the LCD brightness controlling device of navigational system of the present invention.
Fig. 4 is the diagram of expression according to the controlling grade of the use pattern of navigational system of the present invention.
Fig. 5 is the diagram of expression according to the state of the LCD of the travel speed of moving body of the present invention.
Fig. 6 is the workflow diagram of expression according to the LCD brightness control method of the navigational system of embodiments of the invention.
* accompanying drawing major part symbol description *
300---LCD 301---press key input device
333---LCD control device 336---CPU
367---speed pickup 339---storer
Embodiment
Below, be illustrated with reference to illustration.
Fig. 2 is the formation synoptic diagram of expression according to the navigational system of embodiments of the invention.
With reference to Fig. 2, has following accessory according to navigational system of the present invention: interface board 306, mainboard 327, the audio board 342 of audio signal, vehicle interface 363.
Above-mentioned interface board 306 is connected mainboard 327 and audio board 342, between LCD device 200 and the front panel 203, in order to reception and the transmission of carrying out signal.
Mainboard 327 has following accessory: the CPU 336 of control system, store necessary cartographic information, so that on map, demonstrate the traffic related information of current driving road and the storer 339 of driving path guide, be used for controlling the key control device 330 of push button signalling, the LCD control device 333 that control LCD shows.
Mainboard 327 is by cable or mobile communication terminal cdma communication device 315 direct and that have machinery to number, receive the GPS receiver 318 of gps signal, CD (CD, DVD etc.), the CD deck 321 of regeneration and write signal, gyroscope (GYRO) 324 grades are connected.Here, cdma communication device 315, GPS receiver 318 grades are utilized antenna 309,312 received signals.
And, be connected with front panel 303 on mainboard 327, front panel 303 links to each other with the TV module 372 that receives the TV signal, utilizes TV antenna received television signal, by interface board 306, receive the LCD 300 and key control device 330 controls of above-mentioned LCD control device control.
And audio board 342 is joined with mainboard 327, is equipped with following accessory: the microcomputer 354 that is used to control, the tuner 351 that receives radio signals, the propulsion system 345 of power supply, and carry out signal Processing, export the signal processing apparatus 348 of various voice signals.
Simultaneously, be connected with on the audio board 342 and be used for the wireless aerial 357 of received signal, be used for the tape deck 360 of audio plays tape, be used for exporting the expander 369 through the voice signal of signal Processing, audio board 342 is connected on the interface board 306.
Above-mentioned vehicle interface 363 is that expander 369 on the moving body and hand free set/airbag/speed pickup 366 transmits and the interface means of received signal to being contained in, from above-mentioned audio board 342 with mainboard 327 receives and the transmission signal.This vehicle interface 363 and the speed pickup that detects car speed are guaranteed safe active air bag, and are connected without the hand free set 366 that car steering person's hand also can input audio signal.Above-mentioned speed pickup offers CPU336 with velocity information, is used for detecting the speed of a motor vehicle of travelling.
This navigational system 240 is a kind of compound systems.It can provide the moving body navigation Service, can also be connected with various audio frequency, video-unit, and teleprocessing (Telematics) function is provided, and carries out various wireless data service, and moreover, it can also carry out mobile communication and televise.
Here, in order to realize mobile telecommunication service, CDMA communication device 315 utilizes electric wire 309 to be connected with wireless network, carries out the reception and the transmission of data.Received signal is sent to audio board 342 under the control of mainboard 327, the signal processing apparatus 348 by audio board 342 carries out Signal Processing, and under the control of microcomputer 354, treated signal is output to expander 269.
The TV signal that receives by TV antenna 375 carries out signal Processing in TV module 372, under the control of LCD control device 333, treated TV received signal demonstrates vision signal by interface board 306 on LCD 300.The voice signal of TV received signal is also by audio board 342 and expander 269 outputs.
The TV signal that receives by the TV antenna carries out signal Processing in the TV module, under the control of LCD control device 333, treated TV received signal demonstrates vision signal by interface board 306 on LCD 300.The voice signal of TV received signal is also by audio board 342 and expander 269 outputs.
Simultaneously, in order to receive radio broadcasting, radio signal is by the output of the sound of tuner 351, and audio cassette is also all passed through audio board 342 and expander 369 outputs by the output of the sound of tape deck 360.And, also export by expander 369 by the sound signal of CD deck 321 regeneration.Various vision signal bullets show by demonstration means-LCD200.
As mentioned above, the navigational system among the present invention makes a distinction video mode (Video mode) and audio mode (Audio mode).Above-mentioned video mode provides navigation feature that shows still frame and the TV receiving function that shows dynamic picture, and the DVD playing function.Above-mentioned audio mode comprises following two kinds of functions: the function of the radio reception function of reception FM/AM broadcast singal and the CD/MP3/ tape of a playing audio signal.Above-mentioned navigation feature is shown as still frame with the transport condition of vehicles such as map and direction button.
Environment for use and travel speed according to multiple function are distinguished and are controlled the brightness of LCD.Below with reference to Fig. 3, Fig. 4 and Fig. 5 are specifically described the LCD brightness controlling device.
With reference to Fig. 3, press key input device 301 is installed on the front panel, can adopt electronic induction dish or keyboard, touch-screen.Be equipped with TV button, DVD button, CD button, Tape button, AM/FM button, the navigation button or the like on the press key input device 301 particularly.
When the user selects the specific function button, pass on to CPU 336 by press key input device 301, carry out the operation of correlation function.
The translational speed or the travel speed of moving bodys such as above-mentioned speed pickup 367 perception vehicles convey to it CPU 336 again.
In above-mentioned storer 339, according to the pattern of function button, to store at least more than two by the grade of refinement.Fig. 4 for example stores the grade of (strong, in, weak) three control background lights respectively.Promptly because the TV/DVD function is the video mode that is used for playing dynamic picture, so its controlling grade is set at by force, CD/Tape function and tuner are audio modes, so a little less than its controlling grade is set at, though navigation mode is a video mode, but be not that innervation is subjected to picture but approaches still frame, so during its controlling grade is set at, carries out the setting of above controlling grade and stored.
Simultaneously, according to travel speed, on storer 339, to and store LCD picture brightness grade more than two by state segmentation at least.For example shown in Figure 5, at different situations, respectively the LCD brightness degree is set, if travel speed is the stationary state of " 0 ", the LCD picture brightness is just strong; If during transport condition, under the situation of not disturbing driving, if for example travel speed is when 30km is following, the LCD picture brightness just dies down; Under the situation of disturb driving, if when for example travel speed surpasses 30km, the LCD picture brightness just by and close.
In view of the above, CPU 336 is according to the signal of current press key input device 301 inputs, confirm current function button, read LCD background light controlling grade from storer 339 then, then transmit control signal to LCD control device 333, the output of LCD control device is worth corresponding background light control magnitude of voltage with associated ratings, controls the brightness of LCD 300 with this.
Simultaneously, CPU 336 control LCD control device, in specific function push-botton operation process, the distance that speed pickup 367 moves by per second, calculate speed, CPU 336 reads and the corresponding LCD situation of current driving speed controlling grade then, at this moment, if travel speed is 0, the LCD picture brightness is strong, if below specific speed, the LCD brightness degree is just closed the LCD brightness degree if exceed certain speed a little less than being.That is, will be subjected to the interference of LCD picture if surpass specific speed (for example, surpassing 30km) driver's the visual field, therefore, for the accident of preventing in possible trouble, close the brightness of LCD device.Simultaneously, forbid the video refresh memory pattern under steam according to rule.
Fig. 6 is the workflow diagram of expression according to the LCD brightness control method of the navigational system of embodiments of the invention.
At first, open the power supply (S301) of navigation, the input function button is also confirmed function button (S303, S305), confirm that the above-mentioned functions button is TV, the regeneration mode of dynamic pictures such as DVD (S307), CD/Tape/Tuner (S309), any pattern in the navigation mode (S311).
According to above-mentioned affirmation result, if specific function mode, just read and the corresponding background light controlling grade of this operator scheme (S313) from storer, according to the background light controlling grade that reads out, control magnitude of voltage from LCD control device output background light, thereby control the brightness (S315) of LCD respectively.Promptly utilize the strongest dynamic picture patterns such as brightness degree control TV/DVD; Utilize minimum audio modes such as brightness degree control CD/Tape/Tuner; Navigation mode is the still frame pattern, therefore with the control of intermediate light grade.
On the one hand, when utilizing the specific function operation, the speed that perception goes out to travel (S317), whether confirm moving body at travel (S319), if moving body in transport condition, confirms that its travel speed is whether below specific speed (S323), if travel speed is below specific speed, the state of LCD picture is transferred weak (S325), if the travel speed of moving body more than specific speed, is just closed the brightness (S327) of LCD picture.That is, even current LCD picture is in the process of playing dynamic picture or still frame, also can according to the travel speed of moving body by by force/in/and close and adjust the LCD picture.
In the present invention, for the control of LCD brightness, the travel speed parameter is according to having more precedence than use mode parameter certificate.
According to LCD brightness control method of the present invention, the keypress function button is by constituting with the relevant function button of weather, utilizing these keypress function buttons can carry out following adjustment.If fine, a little less than LCD brightness was just exchanged mutually, if weather the moon perhaps rains (snow), LCD brightness was just exchanged by force mutually.This controlling grade value that changes according to weather is stored into storer, just can realizes above operation.
More than be to be the center with the desirable embodiment, the present invention is analyzed that still, it is to be confined to listed examples and accompanying drawing in this instructions that the present invention has more than, under the prerequisite that keeps present technique thought, it can also be used widely.Therefore, by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from the technology of the present invention thought.Technical scope of the present invention is not limited to the content on the instructions, must determine its technical scope according to the claim scope.
Claims (5)
1, a kind of LCD brightness control method of navigational system, it is characterized in that, comprising:, confirm video mode or audio mode according to the function button that the user selects, read the numerical value of background light controlling grade then according to the associative operation pattern, control LCD brightness; In the process of carrying out above-mentioned selected pattern, whether travelling control LCD brightness according to moving body.
2, the LCD brightness control method of navigational system as claimed in claim 1 is characterized in that, above-mentioned video mode comprises dynamic menu or still frame, and the LCD brightness degree of dynamic menu pattern is than the LCD brightness degree height of still frame pattern.
3, the LCD brightness control method of navigational system as claimed in claim 1 is characterized in that, above-mentioned audio mode is controlled LCD brightness with weak grade.
4, the LCD brightness control method of navigational system as claimed in claim 1, it is characterized in that, above-mentioned moving body is in the transport condition, if the travel speed of moving body is more than fixing speed, just close the brightness of LCD picture, if travel speed is below fixing speed, a little less than the state accent with the LCD picture; During above-mentioned moving body remains static, with the state degree of lightening of LCD picture.
5, the LCD brightness control method of navigational system as claimed in claim 1 is characterized in that, according to the use pattern and the travel speed of above-mentioned navigational system, will store plural LCD background light controlling grade at least respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100253725A CN101046508A (en) | 2006-03-31 | 2006-03-31 | LCD brightness controlling method for navigation system |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2006100253725A CN101046508A (en) | 2006-03-31 | 2006-03-31 | LCD brightness controlling method for navigation system |
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| CN101046508A true CN101046508A (en) | 2007-10-03 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103259918A (en) * | 2012-02-20 | 2013-08-21 | 联想(北京)有限公司 | Method for controlling electronic terminal and electronic terminal |
| CN108962188A (en) * | 2018-07-03 | 2018-12-07 | 蔚来汽车有限公司 | Vehicular screen brightness adjusting method and device, controller and recording medium |
| CN109727589A (en) * | 2019-01-02 | 2019-05-07 | 京东方科技集团股份有限公司 | Adjust the method, apparatus, display equipment and storage medium of display brightness |
| CN110321182A (en) * | 2018-03-28 | 2019-10-11 | 上海博泰悦臻电子设备制造有限公司 | Vehicle device desktop display method, system, vehicle device and storage medium |
-
2006
- 2006-03-31 CN CNA2006100253725A patent/CN101046508A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103259918A (en) * | 2012-02-20 | 2013-08-21 | 联想(北京)有限公司 | Method for controlling electronic terminal and electronic terminal |
| CN103259918B (en) * | 2012-02-20 | 2016-03-30 | 联想(北京)有限公司 | A kind ofly control the method for electric terminal and a kind of electric terminal |
| CN110321182A (en) * | 2018-03-28 | 2019-10-11 | 上海博泰悦臻电子设备制造有限公司 | Vehicle device desktop display method, system, vehicle device and storage medium |
| CN108962188A (en) * | 2018-07-03 | 2018-12-07 | 蔚来汽车有限公司 | Vehicular screen brightness adjusting method and device, controller and recording medium |
| CN109727589A (en) * | 2019-01-02 | 2019-05-07 | 京东方科技集团股份有限公司 | Adjust the method, apparatus, display equipment and storage medium of display brightness |
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