CN201170540Y - Hand-held electronic device with electricity-saving function - Google Patents
Hand-held electronic device with electricity-saving function Download PDFInfo
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- CN201170540Y CN201170540Y CNU2008200036643U CN200820003664U CN201170540Y CN 201170540 Y CN201170540 Y CN 201170540Y CN U2008200036643 U CNU2008200036643 U CN U2008200036643U CN 200820003664 U CN200820003664 U CN 200820003664U CN 201170540 Y CN201170540 Y CN 201170540Y
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Abstract
The utility model relates to a hand-holding-type electronic device with the electric-power-saving function, and comprises a photoresistance, an analog digit converter, a micro processor and a backlit module, wherein, one end of the photoresistance is coupled with a voltage source through a reference resistance, and the other end of the photoresistance is grounded, and the impedance of the photoresistance is inversed to the photic brightness; one end of the analog digit converter is coupled with the voltage source through the reference resistance, and one end of the analog digit converter is provided with multiple output points; according to the impedance value of the hptoresistance, the reference resistance can distribute a rating voltage to the analog digit converter; the analog digit converter is used for comparing the input voltage of the voltage source with a reference voltage, and for outputting the comparing results hereinabove so as to output the digital signal through the output points; the micro processor is connected with the analog digit converter; the micro processor generates a corresponding control signal according to the digital signal that is outputted from the output points, so as to adjust the brightness of the backlit module and control the on-off of the controlling keypad LED, thereby can save the electric power.
Description
Technical field
The utility model relates to a kind of portable electric device, particularly relate to a kind of switch that can adjust its module brightness backlight and supervisory keyboard LED according to external light source automatically, can reduce battery consumption, reach the portable electric device with electricity-saving function of power saving effect.
Background technology
Modern's life be unable to do without information, in order to obtain information whenever and wherever possible and to use information, portable electric device becomes an indispensable part in modern's life gradually, the application product of common portable electric device comprises mobile phone, PDA, satellite navigation system (being called for short GPS), all have a display floater and keyboard, and display floater must can display frame by module backlight, and when being subjected to pressing, keyboard also can send led light source.
Because the power consumption of module backlight and led light source accounts for the sizable ratio of portable electric device total power consumption, and the supply of electric power of portable electric device mainly comes from battery, the electric weight of battery just exhausts and must change, and is quite inconvenient in the use.Therefore if will prolong the service time of portable electric device,, also want on the other hand to promote province's electrical efficiency except improving the capacity of battery on the one hand.
Be directed to the lifting scheme of province's electrical efficiency, present portable electric device mainly is by battery saving mode or manual adjusting style, under the situation of battery saving mode, when user's a period of time is not used portable electric device, the led light source of closing module backlight and keyboard automatically is to reach purpose of power saving, but before this, the brightness of all light sources is fixed, can't do light compensation or adjustment with the brightness in the external world, if the too high waste that then forms power supply of light-source brightness, then be difficult for identification if light-source brightness is crossed to hang down, also can cause visual discomfort in addition.
Being seen on the market at present gps satellite navigation system is with manual mode light source to be switched to day inter mode or Night mostly, under the day inter mode, extraneous bright and clear, the brightness of GPS module backlight is less, on the contrary, under Night, extraneous light is darker, and the brightness of GPS module backlight is bigger.If but in the process of driving, pass through the tunnel, or pass through the variation at daytime and night in the process of long-distance travel, while the driver must drive usually with manual mode toggle lights pattern, such behavior tends to jeopardize the safety of driving.
This shows that above-mentioned existing portable electric device obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of novel portable electric device with electricity-saving function, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Therefore, if can be at aforesaid drawbacks, a kind of portable electric device that can respond to external light source is automatically proposed, and adjust the switch of its module brightness backlight and control its keyboard LED according to external light source brightness, not only can save the power consumption of portable electric device, more the brightness of display frame can be adjusted to best euphorosia degree.
Because the defective that above-mentioned existing portable electric device exists, the design people is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding a kind of novel portable electric device with electricity-saving function, can improve general existing portable electric device, make it have more practicality.Through constantly research, design, and, create the utility model that has practical value finally through after studying sample and improvement repeatedly.
Summary of the invention
The purpose of this utility model is, overcome the defective that existing portable electric device exists, and provide a kind of novel portable electric device with electricity-saving function, technical problem to be solved is to make it can cooperate external light source brightness and the switch of adjusting module brightness backlight and supervisory keyboard LED automatically, and then reach purpose of power saving, be very suitable for practicality.
The purpose of this utility model and to solve its technical problem be to adopt following technical scheme to realize.In order to achieve the above object, according to the portable electric device with electricity-saving function of the present utility model, comprising: a voltage source has a reference resistance; One photo resistance, its impedance be inversely proportional to by the brightness of light, end of this photosensitive electricity group couples this reference resistance, its other end ground connection; One analog-digital converter, the one end couples this reference resistance, its other end is provided with a plurality of output points, wherein this reference resistance is according to the resistance value of this photo resistance, the voltage that distributes a quota is to this analog-digital converter, and this analog-digital converter relatively input voltage of this voltage source and the difference of a reference voltage, and with comparative result by above-mentioned output point output data signal; One microprocessor is connected with this analog-digital converter, and produces a corresponding control signal according to the data signal that above-mentioned output point is exported; And a module backlight, adjust brightness according to this control signal.
Aforesaid portable electric device, wherein said photo resistance is arranged at the surface of this portable electric device.
Aforesaid portable electric device, wherein said analog-digital converter have four output points, and export 16 groups of data signals to control the lightness of this module backlight.
Aforesaid portable electric device, it comprises that also wherein this microprocessor control signal is controlled the switch of above-mentioned LED in order to a plurality of LED of the button light source that a keyboard is provided.
Aforesaid portable electric device, wherein said analog-digital converter have four output points, and wherein 8 groups of data signals of three output to be controlling the lightness of this module backlight, another then output switching signal to control the switch of above-mentioned LED.
Aforesaid portable electric device, it also comprises in order to show a display floater of the data that this portable electric device is exported.
Aforesaid portable electric device, wherein said display floater combines with this module backlight, to receive the backlight that this module backlight is provided.
Aforesaid portable electric device, wherein said microprocessor have a plurality of general input and output pins, and the output point with this digital analog converter electrically connects respectively.
Aforesaid portable electric device, wherein this portable electric device is mobile phone, PDA or GPS.
Aforesaid portable electric device, the material of wherein said photo resistance are cadmium sulfide.
Aforesaid portable electric device, the resistance value of wherein said reference resistance are half of maximum impedance value of this photo resistance.
The utility model compared with prior art has tangible advantage and beneficial effect.For achieving the above object, the disclosed portable electric device of the utility model comprises: a display floater, a module backlight, a keyboard, a photosensitive electricity group, an analog-digital converter and a microprocessor.Display floater can show various information, but because it does not have photism, therefore must can show information by the backlight of module output backlight, and having a plurality of buttons, keyboard is available for users to import message or order, its inside is provided with a plurality of LED, the light source that LED sent can illuminate keyboard, so that the user can know and pressing keys correctly.
Maximum of the present utility model is characterised in that the surface of portable electric device is provided with photo resistance, one end of this photosensitive electricity group is coupled to a voltage source (VDD) by a reference resistance, its other end ground connection (GND), the maximum characteristic of photo resistance is for its impedance and be inversely proportional to by the brightness of light, therefore, can respond to extraneous light-source brightness and produce corresponding impedance.
Analog-digital converter is in parallel with this photo resistance, the one end is coupled to this voltage source by this reference resistance equally, its other end is provided with a plurality of output points, above-mentioned output point is connected to the universal output and input pins (GPIO) of this microprocessor, wherein this reference resistance can be according to the resistance value of this photo resistance, the voltage that distributes a quota is to this analog-digital converter, and this analog-digital converter relatively input voltage of this voltage source and the difference of a reference voltage, and convert difference degree to a data signal, export this microprocessor to by above-mentioned output point, this microprocessor then is to produce corresponding control signal according to this data signal, adjusts the brightness of module backlight or the LED switch of supervisory keyboard.
By technique scheme, the portable electric device that the utlity model has electricity-saving function has following advantage and beneficial effect at least: can adjust the brightness of its module backlight and the switch of control LED automatically according to external light source, really can reach the function that reduces battery consumption, and then reach the effect of power saving.
In sum, the utility model is relevant a kind of portable electric device with electricity-saving function, comprise a photo resistance, one analog-digital converter, one microprocessor and a module backlight, one end of photo resistance is coupled to a voltage source by a reference resistance, its other end ground connection, its impedance be inversely proportional to by the brightness of light, one end of analog-digital converter is coupled to this voltage source by this reference resistance equally and connects, its other end is provided with a plurality of output points, this reference resistance can be according to the resistance value of this photo resistance, the voltage that distributes a quota is to this analog-digital converter, and this analog-digital converter is in order to the difference of the input voltage and a reference voltage in comparative voltage source, and with comparative result by above-mentioned output point output data signal, this microprocessor is connected with this analog-digital converter, and the data signal of exporting according to above-mentioned output point produces a corresponding control signal, with the brightness of adjusting this module backlight and the switch of control LED, can reach the effect of power saving.The utlity model has above-mentioned plurality of advantages and practical value, no matter it all has bigger improvement on product structure or function, obvious improvement is arranged technically, and more existing portable electric device has the outstanding effect of enhancement, thereby being suitable for practicality more, really is a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, and for above-mentioned and other purposes, feature and advantage of the present utility model can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the schematic diagram with portable electric device one preferred embodiment of electricity-saving function of the present utility model.
Fig. 2 is the system architecture schematic diagram with portable electric device one preferred embodiment of electricity-saving function of the present utility model.
Fig. 3 is the schematic diagram that the impedance of photo resistance of the present utility model and the brightness that is subjected to light are inversely proportional to.
The embodiment schematic diagram of Fig. 4 A, Fig. 4 B data signal that to be digital analog converter of the present utility model export according to the difference of extraneous brightness.
1: portable electric device 11: liquid crystal panel
12: keyboard 13: photo resistance
21: photo resistance 22: digital analog converter
23: microprocessor 231: universal output and input pins
24: module 25:LED backlight
26: voltage source 27: ground connection
28: reference resistance
D0, D1, D2, D3: output point
The specific embodiment
For further setting forth the utility model is to reach technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, to according to its specific embodiment of the portable electric device with electricity-saving function, structure, feature and the effect thereof that the utility model proposes, describe in detail as after.
See also shown in Figure 1, it is the schematic diagram of a preferred embodiment of the portable electric device with electricity-saving function of the present utility model, portable electric device 1 among the figure, can be mobile phone, PDA, GPS etc., its outer member comprises a display floater 11, a keyboard 12 and a photo resistance 13, and its inner member sees Fig. 2 explanation for details.
Above-mentioned display floater 11 is a liquid crystal panel, can show that various information read for the user, yet, because it does not have luminous voluntarily function, therefore must provide required backlight by a module (not shown) backlight;
Above-mentioned keyboard 12 has a plurality of buttons and is available for users to import message or order, and its inside is provided with a plurality of LED (not shown) and can sends light source and illuminate keyboard 12, so that the user can know and pressing keys correctly;
Above-mentioned photo resistance 13, employed material is mainly cadmium sulfide (CDS), be arranged at the surface of portable electric device 1, its impedance be inversely proportional to by the brightness of light, therefore can respond to extraneous light-source brightness and produce corresponding impedance, and then can reach the brightness of adjustment module backlight and the switch of supervisory keyboard LED.
See also shown in Figure 2ly, be the system architecture schematic diagram of portable electric device one preferred embodiment that the utlity model has electricity-saving function.The portable electric device with electricity-saving function of the utility model preferred embodiment comprises photosensitive electricity group 21, one analog-digital converter 22, a microprocessor 23, one module 24 backlight, a plurality of LED 25 and a voltage source 26 (VDD).
This voltage source 26 (VDD) has a reference resistance 28, one end of photo resistance 21 couples this reference resistance 28, its other end ground connection 27 (GND), analog-digital converter 22 is in parallel with this photo resistance 21, the one end couples this reference resistance 28, its other end is provided with a plurality of output points, output point has four in the present embodiment, it is respectively D0, D1, D2, D 3, and above-mentioned output point is connected to the universal output and input pins 231 (GPIO) of this microprocessor 23, and 25 of this module 24 backlight and above-mentioned LED electrically connect with this microprocessor 23 respectively, and this liquid crystal panel 11 and keyboard 12 needed light sources are provided respectively, wherein this microprocessor 23 can be adjusted the brightness of this module 24 backlight and the switch of control LED 25.
See also shown in Figure 3, the schematic diagram that is inversely proportional to for the impedance of photo resistance of the present utility model and the brightness that is subjected to light.Since the impedance of this photo resistance 21 be inversely proportional to by the brightness of light (as shown in Figure 3), its impedance also can produce corresponding change when extraneous brightness changes, again because this photo resistance 21 is a relation in parallel with analog-digital converter 22, and this reference resistance 28 has the branch compression functions, it can be according to the resistance value of this photo resistance 21, the voltage that distributes a quota is to this analog-digital converter 22, wherein the resistance value of this reference resistance 28 is half of maximum impedance value of this photo resistance 21, therefore, when the resistance value of photo resistance 21 changes, the voltage of input analog-digital converter 22 also can produce corresponding variation, this moment, analog-digital converter 22 was as long as compare the difference of an input voltage and a reference voltage, and convert difference degree to a data signal, just can export this microprocessor 23 to by above-mentioned output point, this microprocessor 23 then is to produce corresponding control signal according to this data signal, adjusts the brightness or supervisory keyboard LED 25 switches of module 24 backlight.
See also shown in Fig. 4 A and Fig. 4 B schematic diagram of the embodiment of the data signal of exporting according to the difference of extraneous brightness for digital analog converter of the present utility model.In Fig. 4 A, four output point D0, D1, D2, the signal that D3 exported are all as the purposes of adjusting module 24 brightness backlight, and it can be divided into 16 grades dark with the brightness of module 24 backlight between bright.In Fig. 4 B, the output point of D0 is the LED 25 switch purposes as supervisory keyboard, the signal that D0 is exported when extraneous brightness is higher than to a certain degree, for example export 0, represent the LED 25 of closing keyboard, otherwise, for example export 1, then the LED 25 of keyboard is opened in representative, and under the situation of Fig. 4 B, no matter LED25 is under unlatching or closing state, all has only D1, D2, three output points of D3 are as the purposes of adjusting module 24 brightness backlight, therefore, under the state that LED25 opens, the brightness of module 24 backlight will be distinguished into 8 grades in a certain brightness section, and under the LED25 closing state, the brightness of module 24 backlight will be distinguished into 8 grades in another brightness section.
Definition mode for extraneous brightness size, the utility model is the magnitude of voltage definition according to the digital analog converter 22 of voltage source 26 (VDD) (please shown in Figure 2 in conjunction with consulting) input, because photo resistance 21 its resistance values and extraneous brightness are closely bound up, and the resistance value of working as photo resistance 21 changes, the voltage that voltage source 26 (VDD) inputs to digital analog converter 22 also can change, therefore, though the switch of the aforementioned LED25 of mentioning changes according to extraneous brightness, but the variation of extraneous brightness can cause the magnitude of voltage synchronous change of digital analog converter 22, so the switch of working control LED25 then is to decide according to inputing to the magnitude of voltage of digital analog converter 22.
As shown in the above description, the utility model portable electric device can be adjusted the brightness of its module backlight and the switch of supervisory keyboard LED automatically according to external light source, in comparison, the portable electric device of prior art does not only have the function that module brightness backlight is adjusted in automatic sensitization, the switching function that does not also have automatic sensitization supervisory keyboard LED, therefore, portable electric device of the present utility model can reduce the function of battery consumption really, and then can reach the effect of power saving.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model, any those skilled in the art, in not breaking away from the technical solutions of the utility model scope, when the structure that can utilize above-mentioned announcement and technology contents are made a little change or be modified to the equivalent embodiment of equivalent variations, but every content that does not break away from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.
Claims (9)
1. portable electric device with electricity-saving function is characterized in that it comprises:
One voltage source has a reference resistance;
One photo resistance, its impedance be inversely proportional to by the brightness of light, end of this photosensitive electricity group couples this reference resistance, its other end ground connection;
One analog-digital converter, the one end couples this reference resistance, its other end is provided with a plurality of output points, wherein this reference resistance is according to the resistance value of this photo resistance, the voltage that distributes a quota is to this analog-digital converter, and this analog-digital converter relatively input voltage of this voltage source and the difference of a reference voltage, and with comparative result by above-mentioned output point output data signal;
One microprocessor is connected with this analog-digital converter, and produces a corresponding control signal according to the data signal that above-mentioned output point is exported; And
One module backlight is adjusted brightness according to this control signal.
2. portable electric device as claimed in claim 1 is characterized in that wherein said photo resistance is arranged at the surface of this portable electric device.
3. portable electric device as claimed in claim 1 is characterized in that wherein said analog-digital converter has four output points, and exports 16 groups of data signals to control the lightness of this module backlight.
4. portable electric device as claimed in claim 1 is characterized in that it comprises that also wherein this microprocessor control signal is controlled the switch of above-mentioned LED in order to a plurality of LED of the button light source that a keyboard is provided.
5. portable electric device as claimed in claim 4, it is characterized in that wherein said analog-digital converter has four output points, wherein 8 groups of data signals of three output to be controlling the lightness of this module backlight, another then output switching signal to control the switch of above-mentioned LED.
6. portable electric device as claimed in claim 1 is characterized in that it also comprises in order to show a display floater of this portable electric device output data.
7. portable electric device as claimed in claim 6 is characterized in that wherein said display floater and this module backlight combines, to receive the backlight that this module backlight is provided.
8. portable electric device as claimed in claim 1 is characterized in that wherein said microprocessor has a plurality of general input and output pins, and the output point with this digital analog converter electrically connects respectively.
9. portable electric device as claimed in claim 1, the resistance value that it is characterized in that wherein said reference resistance is half of the maximum impedance value of this photo resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200036643U CN201170540Y (en) | 2008-02-02 | 2008-02-02 | Hand-held electronic device with electricity-saving function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200036643U CN201170540Y (en) | 2008-02-02 | 2008-02-02 | Hand-held electronic device with electricity-saving function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201170540Y true CN201170540Y (en) | 2008-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200036643U Expired - Fee Related CN201170540Y (en) | 2008-02-02 | 2008-02-02 | Hand-held electronic device with electricity-saving function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201170540Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672538A (en) * | 2013-12-19 | 2014-03-26 | 深圳市华星光电技术有限公司 | Backlight adjusting circuit and electronic device |
-
2008
- 2008-02-02 CN CNU2008200036643U patent/CN201170540Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672538A (en) * | 2013-12-19 | 2014-03-26 | 深圳市华星光电技术有限公司 | Backlight adjusting circuit and electronic device |
| CN103672538B (en) * | 2013-12-19 | 2016-07-06 | 深圳市华星光电技术有限公司 | Backlight regulating circuit and electronic installation |
| US9538598B2 (en) | 2013-12-19 | 2017-01-03 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Backlight adjustment circuit and electronic device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081224 Termination date: 20130202 |
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| CF01 | Termination of patent right due to non-payment of annual fee |