CN104244500A - Portable electronic device and light emission control circuit thereof - Google Patents
Portable electronic device and light emission control circuit thereof Download PDFInfo
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- CN104244500A CN104244500A CN201310236991.9A CN201310236991A CN104244500A CN 104244500 A CN104244500 A CN 104244500A CN 201310236991 A CN201310236991 A CN 201310236991A CN 104244500 A CN104244500 A CN 104244500A
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Abstract
The invention provides a portable electronic device and a light emission control circuit thereof. The light emission control circuit is used for controlling a light emission unit in the portable electronic device to emit light and comprises a CPU, a starting button unit and a flash light driving unit, wherein the starting button unit and the flash light driving unit are connected with the CPU. The starting button unit corresponds to a starting button of the portable electronic device and can send a starting signal to the CPU by operating the starting button, the CPU controls the flash light driving unit to enter the light emission mode, and therefore the light emission unit can be controlled to emit the light continuously.
Description
Technical field
The present invention relates to a kind of portable electron device and emission control circuit thereof, particularly relate to and a kind ofly use portable electron device by key control lighting function and emission control circuit thereof.
Background technology
Along with the development of radio communication and the information processing technology, mobile phone, PDA (Personal Digital Assistant, personal digital assistant) etc. portable electron device competitively emerge in large numbers, all facilities making consumer can enjoy high-tech whenever and wherever possible to the full bringing.
Portable electron device not merely has traditional communication function, integrates various application function especially.At present, portable electron device has lighting function usually, can solve well when opening door and car door under the fortuitous events such as appearance power failure and street lamp damage accurately find keyhole etc. to need the practical problem of temporary lighting in the dark because it is easy to carry.
But existing portable electron device usually adopts the mode of touch-control touch-screen to start or closes lighting function, operation is convenient not as conventional entity button, and in lighting process, easily because unexpected touch-control touch-screen closes lighting function.
Summary of the invention
For the problems referred to above, be necessary to provide a kind of portable electron device used by key control lighting function.
In addition, there is a need to the emission control circuit providing above-mentioned portable electron device to have.
A kind of emission control circuit, luminescence unit in order to control in portable electron device is luminous, this emission control circuit comprises central processing unit (CPU), starts push-button unit and photoflash lamp driver element, and this startup push-button unit and this photoflash lamp driver element are all connected with this CPU; This startup push-button unit is corresponding with the startup button of portable electron device, operate this startup button can make to start push-button unit transmission enabling signal to this CPU, control this photoflash lamp driver element by this CPU and enter light-emitting mode, thus control this luminescence unit continuous illumination.
A kind of portable electron device, it comprises luminescence unit and controls the emission control circuit of this luminescence unit luminescence, this emission control circuit comprises central processing unit (CPU), starts push-button unit and photoflash lamp driver element, and this startup push-button unit and this photoflash lamp driver element are all connected with this CPU; This startup push-button unit is corresponding with the startup button of portable electron device, operate this startup button can make to start push-button unit transmission enabling signal to this CPU, control this photoflash lamp driver element by this CPU and enter light-emitting mode, thus control this luminescence unit continuous illumination.
Portable electron device of the present invention is by starting the lighting function that presses switch to open, simple to operation.
Accompanying drawing explanation
Fig. 1 is the circuit diagram with the portable electron device of emission control circuit of better embodiment of the present invention.
Main element symbol description
| Portable electron device | 100 |
| Luminescence unit | 10 |
| Light-emitting diode | D |
| Emission control circuit | 30 |
| CPU | 31 |
| First luminous enable pin | TORCHEN |
| First photoflash lamp enable pin | FLEN1 |
| Volume increases pin | UP |
| The little pin of volume down | DOWN |
| First clock control pin | CLK1 |
| First data pin | DAT1 |
| Start push-button unit | 32 |
| Start button chip | 321 |
| Grounding pin | GND |
| First controls pin | S1 |
| Second controls pin | S2 |
| First resistance | R1 |
| Second resistance | R2 |
| Photoflash lamp driver element | 33 |
| Photoflash lamp driving chip | 331 |
| Input pin | IN |
| Second clock controls pin | CLK2 |
| Second data pin | DAT2 |
| Second luminous enable pin | EN |
| Second photoflash lamp enable pin | FLEN2 |
| Reset pin | RSET |
| First output pin | FLOUTA |
| Second output pin | FLOUTB |
| 3rd output pin | OUT |
| Reset resistor | Rset |
| First control unit | 34 |
| First volume control button chip | 341 |
| Second control unit | 35 |
| Second volume control button chip | 351 |
Following embodiment will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Embodiment
Refer to Fig. 1, better embodiment of the present invention provides a kind of portable electron device 100.This portable electron device 100 comprises luminescence unit 10 and emission control circuit 30.It is luminous that this emission control circuit 30 controls this luminescence unit 10.
This luminescence unit 10 comprises some light-emitting diode D.This light-emitting diode D can be the photoflash lamp in order to take pictures arranged in portable electron device 100.When luminescence unit 10 continuous illumination, namely start the lighting function of portable electron device 100.
This emission control circuit 30 comprises central processing unit (Central Processing Unit, CPU) 31, starts push-button unit 32, photoflash lamp driver element 33, first control unit 34 and the second control unit 35.This startup push-button unit 32, photoflash lamp driver element 33, first control unit 34 and the second control unit 35 are all connected with this CPU31.
This CPU31 comprises the first luminous enable pin TORCHEN, the first photoflash lamp enable pin FLEN1, volume increases pin UP, the little pin DOWN of volume down, the first clock control pin CLK1 and the first data pin DAT1.This first luminous enable pin TORCHEN, the first photoflash lamp enable pin FLEN1 are all connected with photoflash lamp driver element 33, this photoflash lamp driver element 33 comprises Flash Mode and light-emitting mode, and this CPU31 controls this photoflash lamp driver element 33 by this first luminous enable pin TORCHEN and the first photoflash lamp enable pin FLEN1 and enters Flash Mode or light-emitting mode.This first luminous enable pin TORCHEN is also connected with startup push-button unit 32, in order to receive the enabling signal starting push-button unit 32, controls photoflash lamp driver element 33 and enters light-emitting mode.This volume increases pin UP and the little pin DOWN of volume down and is connected with the first control unit 34 and the second control unit 35 respectively, in order to receive the first control signal and second control signal of the first control unit 34 and the second control unit 35.First clock control pin CLK1 and the first data pin DAT1 is connected with this photoflash lamp driver element 33, in order to the first control signal and the second control signal are sent to this photoflash lamp driver element 33, control the brightness that photoflash lamp driver element 33 regulates luminescence unit 10.
This startup push-button unit 32 is in order to start lighting function, and portable electron device 100 is provided with corresponding entity and starts button (not shown), and this startup button can be piece-picking type button.This startup push-button unit 32 comprises startup button chip 321, first resistance R1 and the second resistance R2.This startup button chip 321 comprises grounding pin GND, first and controls pin S1 and second control pin S2.This grounding pin GND ground connection.This first control pin S1 is connected to power supply VCC through the first resistance R1.This second control pin S2 is connected to the first luminous enable pin TORCHEN, simultaneously also through the second resistance R2 ground connection.User can stir startup button, and make the first control pin S1 and second control pin S2 and keep conducting, the enabling signal described in transmission is to CPU31.In this preferred embodiment, it is high level that this enabling signal controls the first luminous enable pin TORCHEN.
This photoflash lamp driver element 33 comprises photoflash lamp driving chip 331 and reset resistor Rset.This photoflash lamp driving chip 331 comprises input pin IN, second clock controls pin CLK2, the second data pin DAT2, the second luminous enable pin EN, the second photoflash lamp enable pin FLEN2, reset pin RSET, the first output pin FLOUTA, the second output pin FLOUTB, the 3rd output pin OUT and grounding pin GND.
This input pin IN is connected to power supply VCC.This second clock controls pin CLK2 and the second data pin DAT2 and is connected with the first clock control pin CLK1 and the first data pin DAT1 respectively, in order to receive the first control signal and second control signal of CPU31 transmission.This second luminous enable pin EN and the second photoflash lamp enable pin FLEN2 is connected respectively with the first luminous enable pin TORCHEN and the first photoflash lamp enable pin FLEN1, to enter light-emitting mode or Flash Mode under the control of the cpu 31.This first output pin FLOUTA and the second output pin FLOUTB is connected with the anode of light-emitting diode D respectively, and the 3rd output pin OUT is connected with the negative electrode of light-emitting diode D, to light-emitting diode D output current.This reset pin RSET is through reset resistor Rset ground connection.
This first control unit 34 and the second control unit 35 are in order to regulate the luminous intensity of luminescence unit 10, and namely regulate luminous brightness, the volume control button of corresponding portable electron device 100, can be push type button.This first control unit 34 and the second control unit 35 comprise the first volume control button chip 341 and the second volume control button chip 351 respectively.
This first volume control button chip 341 and the second volume control button chip 351 structure are roughly the same with starting button chip 321, include grounding pin GND, first and control pin S1 and second control pin S2.The grounding pin GND ground connection of the first volume control button chip 341 and the second volume control button chip 351.First control pin S1 of the first volume control button chip 341 and the second volume control button chip 351 is connected to power supply VCC through equal first resistance R1.Second control pin S2 of the first volume control button chip 341 and the second volume control button chip 351 is connected to volume respectively increases pin UP and the little pin DOWN of volume down, simultaneously also through the second resistance R2 ground connection.When user presses volume control button, first control pin S1 and second of this first volume control button chip 341 or the second volume control button chip 351 controls pin S2 transient switching, sends the first described control signal or second accordingly and controls signal to CPU31.
When needs start lighting function, user stirs startup button, the the first control pin S1 and second starting button chip 321 is made to control pin S2 conducting, the first luminous enable pin TORCHEN is made to be high level, thus control photoflash lamp driving chip 331 enters light-emitting mode, control luminescence unit 10 continuous illumination, namely start the lighting function of portable electron device.
When needing to regulate luminous brightness, user presses volume control button, make first of the first volume control button chip 341 or the second volume control button chip 351 to control pin S1 and second and control pin S2 transient switching, and send the first control signal or second and control signal to CPU31.The brightness that CPU31 drives photoflash lamp driving chip 331 to control luminescence unit 10 according to the first control signal or the second control signal strengthens or weakens, and namely regulates luminous brightness.
Portable electron device 100 of the present invention, by starting the lighting function that presses switch to open, in addition, also controls the brightness of luminescence unit 10 by volume control button, simple to operation.
Claims (9)
1. an emission control circuit, luminescence unit in order to control in portable electron device is luminous, it is characterized in that: this emission control circuit comprises central processing unit (CPU), starts push-button unit and photoflash lamp driver element, and this startup push-button unit and this photoflash lamp driver element are all connected with this CPU; This startup push-button unit is corresponding with the startup button of portable electron device, operate this startup button can make to start push-button unit transmission enabling signal to this CPU, control this photoflash lamp driver element by this CPU and enter light-emitting mode, thus control this luminescence unit continuous illumination.
2. emission control circuit as claimed in claim 1, it is characterized in that: this emission control circuit also comprises the first control unit and the second control unit, this first control unit and the second control unit can send the first control signal and second respectively and control signal to this CPU, drive this photoflash lamp driver element to regulate the brightness of this luminescence unit by this CPU according to the first control signal and the second control signal.
3. emission control circuit as claimed in claim 2, it is characterized in that: this first control unit and the second control unit corresponding with the volume adjusting button of portable electron device, this first control unit and the second control unit can be made to send this first control signal respectively for operation volume adjusting button and this second controls signal to this CPU.
4. emission control circuit as claimed in claim 1, is characterized in that: this startup push-button unit comprises startup button chip, the first resistance and the second resistance; This startup button chip comprises grounding pin, first and controls pin and the second control pin; This grounding pin ground connection, this first control pin is connected to power supply through this first resistance; This second control pin is connected to this CPU, simultaneously also through this second grounding through resistance; When operating this startup button, this first controls pin and this second controls pin conducting.
5. a portable electron device, it comprises luminescence unit and controls the emission control circuit of this luminescence unit luminescence, it is characterized in that: this emission control circuit comprises central processing unit (CPU), starts push-button unit and photoflash lamp driver element, and this startup push-button unit and this photoflash lamp driver element are all connected with this CPU; This startup push-button unit is corresponding with the startup button of portable electron device, operate this startup button can make to start push-button unit transmission enabling signal to this CPU, control this photoflash lamp driver element by this CPU and enter light-emitting mode, thus control this luminescence unit continuous illumination.
6. portable electron device as claimed in claim 5, it is characterized in that: this emission control circuit also comprises the first control unit and the second control unit, this first control unit and the second control unit can send the first control signal and second respectively and control signal to this CPU, drive this photoflash lamp driver element to regulate the brightness of this luminescence unit by this CPU according to the first control signal and the second control signal.
7. portable electron device as claimed in claim 6, it is characterized in that: this first control unit and the second control unit corresponding with the volume adjusting button of portable electron device, this first control unit and the second control unit can be made to send this first control signal respectively for operation volume adjusting button and this second controls signal to this CPU.
8. portable electron device as claimed in claim 7, is characterized in that: this startup push-button unit comprises startup button chip, the first resistance and the second resistance; This startup button chip comprises grounding pin, first and controls pin and the second control pin; This grounding pin ground connection, this first control pin is connected to power supply through this first resistance; This second control pin is connected to this CPU, simultaneously also through this second grounding through resistance; When operating this startup button, this first controls pin and this second controls pin conducting.
9. portable electron device as claimed in claim 5, it is characterized in that: this luminescence unit comprises light-emitting diode, this light-emitting diode is the photoflash lamp of portable electron device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310236991.9A CN104244500A (en) | 2013-06-17 | 2013-06-17 | Portable electronic device and light emission control circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310236991.9A CN104244500A (en) | 2013-06-17 | 2013-06-17 | Portable electronic device and light emission control circuit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104244500A true CN104244500A (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310236991.9A Pending CN104244500A (en) | 2013-06-17 | 2013-06-17 | Portable electronic device and light emission control circuit thereof |
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| Country | Link |
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| CN (1) | CN104244500A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202750140U (en) * | 2012-08-23 | 2013-02-20 | 惠州Tcl移动通信有限公司 | Mobile terminal with illumination function |
| CN103019567A (en) * | 2012-12-17 | 2013-04-03 | 北京百度网讯科技有限公司 | Touch screen mobile terminal and quick illumination-starting method and quick illumination-starting system thereof |
-
2013
- 2013-06-17 CN CN201310236991.9A patent/CN104244500A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202750140U (en) * | 2012-08-23 | 2013-02-20 | 惠州Tcl移动通信有限公司 | Mobile terminal with illumination function |
| CN103019567A (en) * | 2012-12-17 | 2013-04-03 | 北京百度网讯科技有限公司 | Touch screen mobile terminal and quick illumination-starting method and quick illumination-starting system thereof |
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Application publication date: 20141224 |
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| WD01 | Invention patent application deemed withdrawn after publication |