CN102637354A - Remote controller adjusting infrared current by working voltage and method thereof - Google Patents
Remote controller adjusting infrared current by working voltage and method thereof Download PDFInfo
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- CN102637354A CN102637354A CN2011100368397A CN201110036839A CN102637354A CN 102637354 A CN102637354 A CN 102637354A CN 2011100368397 A CN2011100368397 A CN 2011100368397A CN 201110036839 A CN201110036839 A CN 201110036839A CN 102637354 A CN102637354 A CN 102637354A
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Abstract
The invention discloses a remote controller adjusting an infrared current by a working voltage and a method thereof, wherein an infrared signal is transmitted by a remote controller, and the remote controller has at least one battery; the method comprises the following steps: (a) detecting a power supply voltage of the battery; (b) determining whether the size of the power supply voltage is less than a power supply threshold; (c) when the size of the power supply voltage is more than the power supply threshold, returning to step (b); (d) when the size of the power supply voltage is less than the power supply threshold, adjusting the intensity of a infrared signal according to the size of the power supply voltage, wherein the less the size of the power supply voltage is, the lower the intensity of the infrared signal is adjusted to be.
Description
Technical field
The present invention relates to a kind of infrared remote control technology, further, the invention relates to a kind of telepilot and a kind of method through WV adjustment infrared signal intensity through WV adjustment infrared ray electric current.
Background technology
Telepilot we can say ubiquitous, even we can say that telepilot has arrived meeting and influence normal life.The garage door of going back home out is used telepilot; Car is locked and is used telepilot; Enter the room and open televisor and select program also to use telepilot, open cold air and use telepilot, open sound equipment after meal and listen to the music and also use telepilot; From your life, take away the behavior of your daily life that is bound to seriously have influence on thus to telepilot.
Telepilot is of long duration, and the telepilot at initial stage adopts ultrasonic to move, and because of the reason of Available Material with technology, the ultrasonic telepilot was day by day withered afterwards; Finally replaced infrared light-emitting diode, coding integrated circuit by infrared ray comprehensively; Receive decoder moduleization, infrared remote controller is used on the big and small consumption electronic products all the time in a large number, similarly is televisor; DVR, sound equipment, cold air etc.
Fig. 1 is the circuit block diagram of the infrared remote controller of prior art.Please refer to Fig. 1, this infrared remote controller comprises a microprocessor 101, a button groups 102, a battery 103, a switch 104, a resistance R 101, a transistor T 101 and an infrared light-emitting diode D101.Battery 103 is in order to supply electric power.The button that the user sees through in the action button group 102 comes remote controllers.Microprocessor 101 decides the signal of exporting to transistor T 101 in order to according to the button that is pressed in the button groups 102.Traditional remote controller for RF transmitter all be directly with outside or in the transistor T 101 built drive, the control of electric current then is to be accomplished by current-limiting resistance R101 mostly., battery will make that so supply voltage occurs unstable and phenomenon that remote controller can't be used when relatively not having electricity because of the driving electric current of infrared diode D101.
Summary of the invention
A purpose of the present invention is to provide a kind of telepilot and a kind of method through WV adjustment infrared signal intensity through WV adjustment infrared ray electric current, controls the equilibrium point that the electric current of RF transmitter is maintained to " but maximum transmitter current " in order to detect supply voltage.So then can let still can transmit under the state of low-voltage,, can extend working time though transmitting range has shortened.
In view of this, the present invention provides a kind of telepilot through WV adjustment infrared ray electric current.This telepilot through WV adjustment infrared ray electric current comprises at least one battery, an infrared light-emitting diode, a Current Control light emitting diode output driving circuit, a button groups, a microprocessor and a power sense circuit.Battery is in order to supply a supply voltage.Infrared light-emitting diode comprises one first end and one second end, and its first end couples a supply voltage.Current Control light emitting diode output driving circuit couples second end of infrared light-emitting diode, and in order to the driving infrared light-emitting diode, and the electric current of infrared light-emitting diode is flow through in control.Button groups comprises at least one button.
Microprocessor couples above-mentioned button groups and above-mentioned Current Control light emitting diode output driving circuit; In order to the button of being pressed according to a user; Export a control signal and give Current Control light emitting diode output driving circuit, to determine the output signal of above-mentioned infrared light-emitting diode.Power sense circuit couples battery and Current Control light emitting diode output driving circuit, in order to the size of monitoring supply voltage, and according to the size of supply voltage, transmits a power values and gives Current Control light emitting diode output driving circuit.When supply voltage was lower than a preset threshold, Current Control light emitting diode output driving circuit lowered the size of current that flows through infrared light-emitting diode according to the size of supply voltage, with the intensity of the output signal that reduces infrared light-emitting diode.
According to the described telepilot through WV adjustment infrared ray electric current of preferred embodiment of the present invention, above-mentioned power sense circuit comprises a reference voltage generator and an amplifier.Above-mentioned reference voltage generator is in order to produce a reference voltage.Above-mentioned amplifier comprises a first input end, one second input end and an output terminal; Wherein, Its first input end couples reference voltage generator to receive reference voltage, and its second input end couples battery to receive supply voltage, and its output terminal couples Current Control light emitting diode output driving circuit; In order to the difference of reference voltage and this supply voltage is amplified; To export a difference amplifying signal, wherein, Current Control light emitting diode output driving circuit flows through the size of the maximum current of this infrared light-emitting diode according to this difference amplifying signal decision.
In another embodiment; Power sense circuit comprises an analog-digital converter; This analog-digital converter comprises an input end and an output terminal, and wherein, its input end couples battery to receive supply voltage; Its output terminal couples Current Control light emitting diode output driving circuit; Convert a power supply digital value in order to the value with supply voltage, wherein, above-mentioned Current Control light emitting diode output driving circuit flows through the size of the maximum current of infrared light-emitting diode according to power supply digital value decision.In addition, in another embodiment, first end of infrared light-emitting diode is an anode, and second end of infrared light-emitting diode is a negative electrode.
The present invention provides a kind of method through WV adjustment infrared signal intensity in addition, and wherein, infrared signal is launched by a telepilot, and this telepilot has at least one battery.Above-mentioned method through WV adjustment infrared signal intensity comprises the following steps: that (a) detects a supply voltage of battery; Whether the size of (b) judging supply voltage is less than a power supply threshold; (c) when the size of supply voltage greater than above-mentioned power supply threshold, get back to step (b); And (d) when the size of supply voltage less than above-mentioned power supply threshold, according to the size of supply voltage, the intensity of adjustment infrared signal.When the size of supply voltage is low more, the intensity of infrared signal is controlled more little.
According to the described method of preferred embodiment of the present invention through WV adjustment infrared ray electric current; Above-mentioned " when the size of supply voltage less than the power supply threshold, according to the size of supply voltage, the intensity of adjustment infrared signal " step comprise: when the size of supply voltage less than this power supply threshold; Size according to supply voltage; Adjust the size of the electric current that an infrared light-emitting diode flow through, wherein, above-mentioned infrared light-emitting diode is in order to launch above-mentioned infrared signal.
Spirit of the present invention is through flow through the electric current of infrared light-emitting diode according to the size adjustment of the supply voltage of battery.When the supply voltage of battery more hour, the electric current that flows through infrared light-emitting diode is diminished.Because in the prior art, usually battery is still unexhausted, just need change battery.Usually battery also had two to four one-tenth electric power and was not used this moment, caused waste.In addition, therefore battery liquid also might leak, and causes the damage of the electronic component in the telepilot.Utilize the present invention can improve above-mentioned defective.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, does not constitute qualification of the present invention.In the accompanying drawings:
Fig. 1 is the circuit block diagram of the infrared remote controller of prior art;
Fig. 2 is the circuit block diagram of the telepilot that passes through WV adjustment infrared ray electric current of first embodiment of the invention;
Fig. 3 is the circuit block diagram of the telepilot that passes through WV adjustment infrared ray electric current of second embodiment of the invention;
Fig. 4 is the circuit block diagram of the telepilot that passes through WV adjustment infrared ray electric current of third embodiment of the invention;
Fig. 5 is the circuit block diagram of the telepilot that passes through WV adjustment infrared ray electric current of fourth embodiment of the invention;
Fig. 6 be fourth embodiment of the invention Fig. 5 than the detail circuits calcspar;
Fig. 7 be fourth embodiment of the invention Fig. 5 than the detail circuits calcspar;
Fig. 8 is the process flow diagram that the WV of fifth embodiment of the invention is adjusted the method for infrared signal intensity.
Drawing reference numeral:
101,203: microprocessor
102,201: button groups
103,202: battery
104: switch
R101: resistance
T101: transistor
D101, D201: infrared light-emitting diode
IC201: telepilot control circuit
VDD: supply voltage
Idrv: the electric current that flows through infrared light-emitting diode D201
204: power sense circuit
205: Current Control light emitting diode output driving circuit
CON: control signal
PV: power values
301: analog-digital converter
DV: digital value
401: amplifier
R401: first resistance
R402: second resistance
402: reference voltage generator
VREF: reference voltage
S501～S505: the step of the embodiment of the invention
Embodiment
For let above-mentioned and other purposes of the present invention, feature and advantage can be more obviously understandable, hereinafter is special lifts preferred embodiment, and cooperates appended graphicly, elaborates as follows.
First embodiment
Fig. 2 is the circuit block diagram of the telepilot that passes through WV adjustment infrared ray electric current of first embodiment of the invention.Please refer to Fig. 2, this infrared remote controller comprises infrared light-emitting diode D201, button groups 201, battery 202 and telepilot control circuit IC201.The relation of coupling of the circuit of this telepilot illustrates like Fig. 2.Battery 202 is given circuit such as telepilot control circuit IC201, infrared light-emitting diode D201 and button groups 201 in order to supply a supply voltage VDD.The anode of infrared light-emitting diode D201 couples a supply voltage VDD.Telepilot control circuit IC201 is coupled in the two ends of battery 202, and in order to detect the size of supply voltage, the size of the electric current I drv of infrared light-emitting diode D201 is flow through in decision.
Telepilot control circuit IC201 comprises microprocessor 203, power sense circuit 204 and Current Control light emitting diode output driving circuit 205.Microprocessor 203 couples button groups 201 and Current Control light emitting diode output driving circuit 205; In order to the button of being pressed according to a user; Export a control signal CON and give Current Control light emitting diode output driving circuit 205, with the output signal of decision infrared light-emitting diode D201.Power sense circuit 204 couples the two ends and the Current Control light emitting diode output driving circuit 205 of battery 202; Size in order to monitoring supply voltage VDD; And, transmit a power values PV and give Current Control light emitting diode output driving circuit 205 according to the size of supply voltage VDD.205 of Current Control light emitting diode output driving circuits are the size driving infrared light-emitting diode D201 according to power values PV, and the electric current I drv of infrared light-emitting diode is flow through in control.
Second embodiment
Fig. 3 is the circuit block diagram of the telepilot that passes through WV adjustment infrared ray electric current of second embodiment of the invention.Please refer to Fig. 3, this second embodiment and the foregoing description difference are that the power sense circuit 204 of this embodiment uses analog-digital converter 301 to implement.This analog-digital converter 301 converts a digital value DV in order to the supply voltage VDD with battery, and exports above-mentioned Current Control light emitting diode output driving circuit 205 to.205 sizes according to the digital value DV that is received of Current Control light emitting diode output driving circuit, the size of the maximum drive current Idrv of infrared light-emitting diode D201 is flow through in decision.In general; Current Control light emitting diode output driving circuit 205 has a preset threshold value; As digital value DV during greater than this threshold value; Then the size of maximum drive current Idrv can not change, and as digital value DV during less than this threshold value, maximum drive current Idrv can change according to ratio along with the size of digital value DV.
In addition; Except above-mentioned mode according to ratio change maximum drive current Idrv; A plurality of threshold values also can be preset in Current Control light emitting diode output driving circuit 205 inside; For example first, second, third, fourth threshold value can be set, wherein first threshold value＞second threshold value＞the 3rd threshold value＞the 4th threshold value.As digital value DV during greater than first threshold value, then the size of maximum drive current Idrv can not change.As digital value DV during between first threshold value and second threshold value, then the size of maximum drive current Idrv become originally 3/4.As digital value DV during between second threshold value and the 3rd threshold value, then the size of maximum drive current Idrv become originally 1/2.As digital value DV during between the 3rd threshold value and the 4th threshold value, then the size of maximum drive current Idrv become originally 1/4.
Though the foregoing description is to give an example with four threshold values and four size of current; Yet; Under technical field have size that common knowledge the knowledgeable should be known in electric current or the number of threshold value depends on different designs and circuit, so the present invention is not as limit.
The 3rd embodiment
Fig. 4 is the circuit block diagram of the telepilot that passes through WV adjustment infrared ray electric current of third embodiment of the invention.Please refer to Fig. 4, this 3rd embodiment and the foregoing description difference be, the power sense circuit 204 of this embodiment is to use an amplifier 401, first resistance R 401, second resistance R 402 and 402 enforcements of a reference voltage generator.One end of first resistance R 401 couples battery 202 to receive supply voltage VDD, and second end of first resistance R 401 couples the anode of second resistance R 402 and amplifier 401.The other end of second resistance R 402 is connected on the other end of battery 202.The negative terminal of amplifier 401 couples above-mentioned reference voltage generator 402 to receive this reference voltage VREF.When supply voltage VDD descends; The difference amplifying signal VD that amplifier 401 is exported can reduce; 205 sizes according to the difference amplifying signal VD that is received of Current Control light emitting diode output driving circuit, the size of the maximum drive current Idrv of infrared light-emitting diode D201 is flow through in decision.
The 4th embodiment
Fig. 5 is the circuit block diagram of the telepilot that passes through WV adjustment infrared ray electric current of fourth embodiment of the invention.Please earlier with reference to figure 5, this infrared remote controller comprises infrared light-emitting diode D501, button groups 501, battery 502 and telepilot control circuit IC501.The relation of coupling of the circuit of this telepilot illustrates like Fig. 5.Battery 502 is given circuit such as telepilot control circuit IC501, infrared light-emitting diode D501 and button groups 501 in order to supply a supply voltage VDD.The anode of infrared light-emitting diode D501 couples a supply voltage VDD.Telepilot control circuit IC501 is coupled in the two ends of battery 502, and in order to detect the size of supply voltage, the size of the electric current I drv of infrared light-emitting diode D501 is flow through in decision.Telepilot control circuit IC501 comprises microprocessor 503, power sense circuit 504 and Current Control light emitting diode output driving circuit 505.
The difference of the circuit of Fig. 5 and the circuit of Fig. 1 is; Power sense circuit 504 sends power values PV to microprocessor 503; By microprocessor 503 Control current control light emitting diode output driving circuit 505; Size with according to power values PV drives infrared light-emitting diode D501, and the electric current I drv of infrared light-emitting diode is flow through in control.When battery electric quantity is low more, power values PV also can be low more, therefore flows through also relative more little of the electric current I drv of infrared light-emitting diode D501.
Fig. 6 be fourth embodiment of the invention Fig. 5 than the detail circuits calcspar.Please refer to Fig. 6, this circuit and foregoing circuit difference are that power sense circuit 504 uses analog-digital converter 601 to implement.This analog-digital converter 601 converts a digital value DV in order to the supply voltage VDD with battery, and exports microprocessor 503 to.503 data of controlling light emitting diode output driving circuit 505 with this digital value DV as Control current of microprocessor.503 sizes according to the digital value DV that is received of microprocessor, Control current is controlled light emitting diode output driving circuit 505, flows through the size of the maximum drive current Idrv of infrared light-emitting diode D501 with decision.
Fig. 7 be fourth embodiment of the invention Fig. 5 than the detail circuits calcspar.Please refer to Fig. 7, this 3rd embodiment and the foregoing description difference be, the power sense circuit 504 of this embodiment is to use an amplifier 701, first resistance R 701, second resistance R 702 and 702 enforcements of a reference voltage generator.One end of first resistance R 701 couples battery 502 to receive supply voltage VDD, and second end of first resistance R 701 couples the anode of second resistance R 702 and amplifier 701.The other end of second resistance R 702 is connected on the other end of battery 502.The negative terminal of amplifier 701 couples above-mentioned reference voltage generator 702 to receive this reference voltage VREF.When supply voltage VDD descends; The difference amplifying signal VD that amplifier 701 is exported can reduce; 503 sizes of microprocessor according to the difference amplifying signal VD that is received; Control current is controlled light emitting diode output driving circuit 505, flows through the size of the maximum drive current Idrv of infrared light-emitting diode D501 with decision.
The 5th embodiment
Fig. 8 is the process flow diagram that the WV of fifth embodiment of the invention is adjusted the method for infrared signal intensity.Please refer to Fig. 8, the method comprises the following steps:
Step S801: beginning.
Step S802: a supply voltage VDD who detects battery.
Step S803: whether the size of judging supply voltage VDD is less than a power supply threshold.When being judged as be, then execution in step S803.When being judged as not execution in step S804.
Step S804: when the size of supply voltage VDD greater than the power supply threshold, do not adjust ultrared signal intensity.
Step S805: when the size of supply voltage VDD less than the power supply threshold, according to the size of supply voltage VDD, the intensity of adjustment infrared signal, wherein, along with the size of supply voltage VDD is low more, the intensity of infrared signal is controlled more little.
In sum, spirit of the present invention is through flow through the electric current of infrared light-emitting diode according to the size adjustment of the supply voltage of battery.When the supply voltage of battery more hour, the electric current that flows through infrared light-emitting diode is diminished.Because in the prior art, usually battery is still unexhausted, just need change battery.Usually battery also had two to four one-tenth electric power and was not used this moment, caused waste.In addition, therefore battery liquid also might leak, and causes the damage of the electronic component in the telepilot.Utilize the present invention can improve above-mentioned defective.
The specific embodiment that in the detailed description of preferred embodiment, is proposed is only in order to convenient explanation technology contents of the present invention; But not with narrow sense of the present invention be limited to the foregoing description; In the situation that does not exceed spirit of the present invention and claim scope; The many variations of being done is implemented, and all belongs to scope of the present invention.Therefore protection scope of the present invention is as the criterion when looking the claim scope person of defining.
Claims (18)
1. the telepilot through WV adjustment infrared ray electric current is characterized in that, comprising:
At least one battery is in order to supply a supply voltage;
One infrared light-emitting diode comprises one first end and one second end, and its first end couples a supply voltage;
One Current Control light emitting diode output driving circuit couples second end of said infrared light-emitting diode, and in order to driving said infrared light-emitting diode, and the electric current of said infrared light-emitting diode is flow through in control;
One button groups comprises at least one button;
One microprocessor; Couple said button groups and said Current Control light emitting diode output driving circuit; In order to the button of being pressed according to a user; Export a control signal and give said Current Control light emitting diode output driving circuit, to determine the output signal of said infrared light-emitting diode; And
One power sense circuit couples said battery and said Current Control light emitting diode output driving circuit, in order to monitor the size of said supply voltage; And according to the size of said supply voltage; Transmit a power values and give said Current Control light emitting diode output driving circuit, wherein
When said supply voltage is lower than a preset threshold; Said Current Control light emitting diode output driving circuit is according to the size of said supply voltage; Lower the size of current flow through this infrared light-emitting diode, with the intensity of the output signal that reduces said infrared light-emitting diode.
2. the telepilot through WV adjustment infrared ray electric current as claimed in claim 1 is characterized in that said power sense circuit comprises:
One reference voltage generator is in order to produce a reference voltage; And
One amplifier comprises a first input end, one second input end and an output terminal, wherein; Said first input end couples said reference voltage generator to receive said reference voltage; Said second input end couples said battery to receive said supply voltage, and said output terminal couples said Current Control light emitting diode output driving circuit, in order to the difference of said reference voltage and said supply voltage is amplified; To export a difference amplifying signal
Wherein, said Current Control light emitting diode output driving circuit flows through the size of the maximum current of said infrared light-emitting diode according to said difference amplifying signal decision.
3. the telepilot through WV adjustment infrared ray electric current as claimed in claim 1 is characterized in that said power sense circuit comprises:
One analog-digital converter comprises an input end and an output terminal, wherein; Said input end couples said battery to receive said supply voltage; Said output terminal couples said Current Control light emitting diode output driving circuit, converts a power supply digital value in order to the value with said supply voltage
Wherein, said Current Control light emitting diode output driving circuit flows through the size of the maximum current of said infrared light-emitting diode according to said power supply digital value decision.
4. the telepilot through WV adjustment infrared ray electric current as claimed in claim 1 it is characterized in that first end of said infrared light-emitting diode is an anode, and second end of said infrared light-emitting diode is a negative electrode.
5. a telepilot control circuit in order to control a telepilot, is characterized in that; Said telepilot comprises battery, an infrared light-emitting diode and a button groups in order to supply a supply voltage; Wherein, an end of said infrared light-emitting diode couples a supply voltage, and said button groups comprises at least one button; Wherein, said telepilot control circuit comprises:
One Current Control light emitting diode output driving circuit couples the other end of said infrared light-emitting diode, and in order to driving said infrared light-emitting diode, and the electric current of said infrared light-emitting diode is flow through in control;
One microprocessor; Couple said button groups and said Current Control light emitting diode output driving circuit; In order to the button of being pressed according to a user; Export a control signal and give said Current Control light emitting diode output driving circuit, to determine the output signal of said infrared light-emitting diode; And
One power sense circuit couples said battery and said Current Control light emitting diode output driving circuit, in order to monitor the size of said supply voltage; And according to the size of said supply voltage; Transmit a power values and give said Current Control light emitting diode output driving circuit, wherein
When said supply voltage is lower than a preset threshold; Said Current Control light emitting diode output driving circuit is according to the size of said supply voltage; Lower the size of current flow through said infrared light-emitting diode, with the intensity of the output signal that reduces said infrared light-emitting diode.
6. telepilot control circuit as claimed in claim 5 is characterized in that, said power sense circuit comprises:
One reference voltage generator is in order to produce a reference voltage; And
One amplifier comprises a first input end, one second input end and an output terminal, wherein; Said first input end couples said reference voltage generator to receive said reference voltage; Said second input end couples said battery to receive said supply voltage, and its output terminal couples said Current Control light emitting diode output driving circuit, in order to the difference of said reference voltage and said supply voltage is amplified; To export a difference amplifying signal
Wherein, said Current Control light emitting diode output driving circuit flows through the size of the maximum current of said infrared light-emitting diode according to said difference amplifying signal decision.
7. telepilot control circuit as claimed in claim 5 is characterized in that, said power sense circuit comprises:
One analog-digital converter comprises an input end and an output terminal, wherein; Said input end couples said battery to receive said supply voltage; Its output terminal couples said Current Control light emitting diode output driving circuit, converts a power supply digital value in order to the value with said supply voltage
Wherein, said Current Control light emitting diode output driving circuit flows through the size of the maximum current of said infrared light-emitting diode according to said power supply digital value decision.
8. telepilot control circuit as claimed in claim 5 is characterized in that, first end of said infrared light-emitting diode is an anode, and second end of said infrared light-emitting diode is a negative electrode.
9. the method through WV adjustment infrared signal intensity is characterized in that said infrared signal is launched by a telepilot, and said telepilot has at least one battery, and said method comprises:
(a) supply voltage of the said battery of detection;
Whether the size of (b) judging said supply voltage is less than a power supply threshold;
(c) when the size of said supply voltage greater than said power supply threshold, get back to step (b); And
(d) when the size of said supply voltage less than said power supply threshold, according to the size of said supply voltage, adjust the intensity of said infrared signal,
Wherein, the size of said supply voltage is low more, and the intensity of said infrared signal is controlled more little.
10. the method through WV adjustment infrared signal intensity as claimed in claim 5; It is characterized in that; When the size of said supply voltage less than said power supply threshold, according to the size of said supply voltage, the step of adjusting the intensity of said infrared signal comprises:
When the size of said supply voltage less than said power supply threshold, according to the size of said supply voltage, adjust the size of the electric current that an infrared light-emitting diode flow through,
Wherein, said infrared light-emitting diode is in order to launch said infrared signal.
11. the telepilot through WV adjustment infrared ray electric current is characterized in that, comprising:
At least one battery is in order to supply a supply voltage;
One infrared light-emitting diode comprises one first end and one second end, and said first end couples a supply voltage;
One Current Control light emitting diode output driving circuit couples second end of said infrared light-emitting diode, and in order to driving said infrared light-emitting diode, and the electric current of said infrared light-emitting diode is flow through in control;
One button groups comprises at least one button;
One microprocessor; Couple said button groups and said Current Control light emitting diode output driving circuit; In order to the button of being pressed according to a user; Export a control signal and give said Current Control light emitting diode output driving circuit, to determine the output signal of said infrared light-emitting diode; And
One power sense circuit couples said battery and said Current Control light emitting diode output driving circuit, and in order to monitoring the size of said supply voltage, and, transmit a power values and give said microprocessor according to the size of said supply voltage, wherein,
When said supply voltage is lower than a preset threshold; Said microprocessor is according to said power values; Control said Current Control light emitting diode output driving circuit; Make its size that accordings to said supply voltage, lower the size of current flow through said infrared light-emitting diode, with the intensity of the output signal that reduces said infrared light-emitting diode.
12. the telepilot through WV adjustment infrared ray electric current as claimed in claim 11 is characterized in that said power sense circuit comprises:
One reference voltage generator is in order to produce a reference voltage; And
One amplifier comprises a first input end, one second input end and an output terminal, wherein; Said first input end couples said reference voltage generator to receive said reference voltage; Said second input end couples said battery to receive said supply voltage, and said output terminal couples said Current Control light emitting diode output driving circuit, in order to the difference of said reference voltage and said supply voltage is amplified; To export a difference amplifying signal
Wherein, said microprocessor is controlled said Current Control light emitting diode output driving circuit according to said difference amplifying signal, flows through the size of the maximum current of said infrared light-emitting diode with decision.
13. the telepilot through WV adjustment infrared ray electric current as claimed in claim 11 is characterized in that said power sense circuit comprises:
One analog-digital converter comprises an input end and an output terminal, wherein; Said input end couples said battery to receive said supply voltage; Its output terminal couples said Current Control light emitting diode output driving circuit, converts a power supply digital value in order to the value with said supply voltage
Wherein, said microprocessor is controlled said Current Control light emitting diode output driving circuit according to said power supply digital value, flows through the size of the maximum current of said infrared light-emitting diode with decision.
14. the telepilot through WV adjustment infrared ray electric current as claimed in claim 11 it is characterized in that first end of said infrared light-emitting diode is an anode, and second end of said infrared light-emitting diode is a negative electrode.
15. a telepilot control circuit in order to control a telepilot, is characterized in that; Said telepilot comprises battery, an infrared light-emitting diode and a button groups in order to supply a supply voltage; Wherein, an end of said infrared light-emitting diode couples a supply voltage, and said button groups comprises at least one button; Wherein, said telepilot control circuit comprises:
One Current Control light emitting diode output driving circuit couples the other end of said infrared light-emitting diode, and in order to driving said infrared light-emitting diode, and the electric current of said infrared light-emitting diode is flow through in control;
One microprocessor; Couple said button groups and said Current Control light emitting diode output driving circuit; In order to the button of being pressed according to a user; Export a control signal and give said Current Control light emitting diode output driving circuit, to determine the output signal of said infrared light-emitting diode; And
One power sense circuit couples said battery and said Current Control light emitting diode output driving circuit, and in order to monitoring the size of said supply voltage, and, transmit a power values and give said microprocessor according to the size of said supply voltage, wherein,
When said supply voltage is lower than a preset threshold; Said microprocessor is according to said power values; Control said Current Control light emitting diode output driving circuit; Make its size that accordings to said supply voltage, lower the size of current flow through said infrared light-emitting diode, with the intensity of the output signal that reduces said infrared light-emitting diode.
16. telepilot control circuit as claimed in claim 15 is characterized in that, said power sense circuit comprises:
One reference voltage generator is in order to produce a reference voltage; And
One amplifier comprises a first input end, one second input end and an output terminal, wherein; Said first input end couples said reference voltage generator to receive said reference voltage; Said second input end couples said battery to receive said supply voltage, and its output terminal couples said Current Control light emitting diode output driving circuit, in order to the difference of said reference voltage and said supply voltage is amplified; To export a difference amplifying signal
Wherein, said microprocessor is controlled said Current Control light emitting diode output driving circuit according to said difference amplifying signal, flows through the size of the maximum current of said infrared light-emitting diode with decision.
17. telepilot control circuit as claimed in claim 15 is characterized in that, said power sense circuit comprises:
One analog-digital converter comprises an input end and an output terminal, wherein; Said input end couples said battery to receive said supply voltage; Its output terminal couples said Current Control light emitting diode output driving circuit, converts a power supply digital value in order to the value with said supply voltage
Wherein, said microprocessor is controlled said Current Control light emitting diode output driving circuit according to said power supply digital value, flows through the size of the maximum current of said infrared light-emitting diode with decision.
18. telepilot control circuit as claimed in claim 15 is characterized in that, first end of said infrared light-emitting diode is an anode, and second end of said infrared light-emitting diode is a negative electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110036839 CN102637354B (en) | 2011-02-12 | 2011-02-12 | Remote controller adjusting infrared current by working voltage and method thereof |
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| CN 201110036839 CN102637354B (en) | 2011-02-12 | 2011-02-12 | Remote controller adjusting infrared current by working voltage and method thereof |
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| CN102637354A true CN102637354A (en) | 2012-08-15 |
| CN102637354B CN102637354B (en) | 2013-10-23 |
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| CN (1) | CN102637354B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103092240A (en) * | 2012-12-28 | 2013-05-08 | 杭州士兰微电子股份有限公司 | Single-tube learning amplifying circuit |
| CN105448076A (en) * | 2014-05-26 | 2016-03-30 | 无锡华润矽科微电子有限公司 | Remote control driving circuit structure and remote control transmitting circuit structure for realization of adaptive adjusting |
| CN111653072A (en) * | 2019-03-04 | 2020-09-11 | 青岛海尔多媒体有限公司 | Method for controlling remote controller, remote controller and storage medium |
| CN116954114A (en) * | 2023-06-25 | 2023-10-27 | 江苏宿芯半导体有限公司 | MCU controller with LCD drive |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101165743A (en) * | 2006-10-17 | 2008-04-23 | 南京Lg同创彩色显示系统有限责任公司 | Remote controller infrared signal output intensity adjusting apparatus and method |
| CN101615339A (en) * | 2008-06-25 | 2009-12-30 | 索尼株式会社 | Telepilot |
-
2011
- 2011-02-12 CN CN 201110036839 patent/CN102637354B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101165743A (en) * | 2006-10-17 | 2008-04-23 | 南京Lg同创彩色显示系统有限责任公司 | Remote controller infrared signal output intensity adjusting apparatus and method |
| CN101615339A (en) * | 2008-06-25 | 2009-12-30 | 索尼株式会社 | Telepilot |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103092240A (en) * | 2012-12-28 | 2013-05-08 | 杭州士兰微电子股份有限公司 | Single-tube learning amplifying circuit |
| CN103092240B (en) * | 2012-12-28 | 2014-10-22 | 杭州士兰微电子股份有限公司 | Single-tube learning amplifying circuit |
| CN105448076A (en) * | 2014-05-26 | 2016-03-30 | 无锡华润矽科微电子有限公司 | Remote control driving circuit structure and remote control transmitting circuit structure for realization of adaptive adjusting |
| CN105448076B (en) * | 2014-05-26 | 2019-03-19 | 无锡华润矽科微电子有限公司 | Realize the remote control driving circuit structure and remote controlled transmitting circuit structure of automatic adjusument |
| CN111653072A (en) * | 2019-03-04 | 2020-09-11 | 青岛海尔多媒体有限公司 | Method for controlling remote controller, remote controller and storage medium |
| CN116954114A (en) * | 2023-06-25 | 2023-10-27 | 江苏宿芯半导体有限公司 | MCU controller with LCD drive |
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| Publication number | Publication date |
|---|---|
| CN102637354B (en) | 2013-10-23 |
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