CN105448237A - LED display apparatus controlled and driven by use of NFC - Google Patents
LED display apparatus controlled and driven by use of NFC Download PDFInfo
- Publication number
- CN105448237A CN105448237A CN201610014623.3A CN201610014623A CN105448237A CN 105448237 A CN105448237 A CN 105448237A CN 201610014623 A CN201610014623 A CN 201610014623A CN 105448237 A CN105448237 A CN 105448237A
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- module
- led display
- nfc
- control
- signal
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
Abstract
The invention provides an LED display apparatus controlled and driven by use of NFC. The LED display apparatus comprises an LED display module, an antenna, a voltage conversion module, an envelope detection circuit for detecting envelope signals in NFC signals, a control module for decoding control signals according to the envelope signals and an LED display driving module for driving the LED display module to perform display according to the control signals. The antenna, the voltage conversion module, the LED display driving module and the LED display module are successively in electrical connection, the detecting end of the envelope detection circuit is connected with the antenna, and the output end of the envelope detection circuit, the control module and the LED display driving module are successively connected. According to the invention, the LED display module is controlled through NFC signals to emit light in a corresponding mode, power is supplied to a whole circuit structure also through the NFC signals, and the apparatus provided by the invention has the advantage of realizing luminescence without external connection with a power source.
Description
Technical field
The invention belongs to LED display driver field, particularly relate to a kind of LED display adopting NFC to control and drive.
Background technology
NFC and near field communication technology are a kind of Near Field Communication technology, can at mobile device, consumption electronic product, to carry out communication between PC and intelligent artifact mutual.NFC has simply, the advantage of low cost, strong security, uses also very simple and convenient, is widely used at present in mobile payment, identification, intelligent appliance control.
Current NFC technique is widely applied, relate to ISO14443, the international standards such as ISO15693, ISO18092, these standards, except defining communication data Frame Protocol, have also carried out specification to technical specifications relevant to antenna physical characteristic such as operating distance, frequency, coupling scheme emphatically.
Different according to design ap-plication, under NFC device can be operated in card reader, snap gauge plan isotype.Near-field communication device under card reader pattern can produce the magnetic field of 13.56MHz, and card or other NFC device be operated under mode card can obtain energy and information, to carry out communication from this magnetic field.
LED display and lighting technology is widely used at present in people's daily life, has enriched the material and cultural life of people.Light the information that LED needs energy and control LED lighting mode, NFC technique can simultaneously for outside provides energy and information, and both just in time agree with.LED display can produce inexpensive new product with the combination of NFC technique, be the function that people provide information to indicate, decorate, throw light on, but in currently available technology, similar product.
Therefore, prior art existing defects, is badly in need of improving.
Summary of the invention
In view of this, namely object of the present invention is to provide a kind of LED display adopting NFC to control and drive.
Provided by the invention a kind of adopt NFC control and drive LED display, comprise LED display module, for receive NFC signal antenna, for by the voltage transformation module being converted to predetermined dimension voltage of the voltage in described NFC signal, be used for the envelope signal detected in described NFC signal envelope detected circuit, be used for according to described envelope signal decode control signal control module, be used for driving described LED display module to carry out the LED driver module shown according to described control signal; Described antenna, described voltage transformation module, described LED driver module and described LED display module are electrically connected successively, the test side of described envelope detected circuit is connected with described antenna, and the output terminal of described envelope detected circuit, described control module and described LED driver module connect successively.
Adopt in the LED display of NFC control and driving provided by the invention, described LED driver module comprise display mode selection unit, display mode storage unit, N export code translator and N number of switch element, described LED display module comprises N number of light emitting diode; The control signal output terminal of described control circuit, described display mode selection unit, described display mode storage unit and described code translator connect successively, the control end of N number of delivery outlet of described code translator switch element N number of with this is respectively connected, the input end of this N number of switch element is connected with the voltage output end of described voltage transformation module respectively, the output terminal of this N number of switch element respectively light emitting diode N number of with this is connected, wherein, N be greater than 1 natural number.
Adopt in the LED display of NFC control and driving provided by the invention, described switch element is fet.
Adopt in the LED display of NFC control and driving provided by the invention, also comprise the carrier detect detecting unit of the carrier wave for detecting the NFC signal that described antenna receives and the frequency translation unit for the clock signal that described carrier wave converted to preset frequency, the clock signal changed out is sent to described control circuit by described frequency translation unit.
Adopt in the LED display of NFC control and driving provided by the invention, described voltage transformation module comprises amplitude limiter circuit, modulation circuit and the voltage conversion circuit for exporting predetermined voltage, and described antenna, described amplitude limiter circuit, described modulation circuit and described voltage conversion circuit connect successively.
Present invention also offers a kind of adopt NFC control and drive LED display, comprise LED display module, for receive NFC signal antenna, for by the voltage transformation module being converted to predetermined dimension voltage of the voltage in described NFC signal, be used for the envelope signal detected in described NFC signal envelope detected circuit, be used for according to described envelope signal decode control signal control module, be used for driving described LED display module to carry out the LED driver module shown according to described control signal; Described antenna, described voltage transformation module, described LED driver module and described LED display module are electrically connected successively, the test side of described envelope detected circuit is connected with described antenna, and the output terminal of described envelope detected circuit, described control module and described LED driver module connect successively;
Described LED driver module comprise display mode selection unit, display mode storage unit, N export code translator and N number of switch element, described LED display module comprises N number of light emitting diode; The control signal output terminal of described control circuit, described display mode selection unit, described display mode storage unit and described code translator connect successively, the control end of N number of delivery outlet of described code translator switch element N number of with this is respectively connected, the input end of this N number of switch element is connected with the voltage output end of described voltage transformation module respectively, the output terminal of this N number of switch element respectively light emitting diode N number of with this is connected, wherein, N be greater than 1 natural number;
Described employing NFC controls and the LED display that drives also comprises the carrier detect detecting unit of the carrier wave for detecting the NFC signal that described antenna receives and the frequency translation unit for the clock signal that described carrier wave converted to preset frequency, and the clock signal changed out is sent to described control module by described frequency translation unit.
The present invention is converted to the voltage of predetermined dimension by the NFC signal that antenna receives by voltage transformation module, such as, in the present embodiment be, power to give follow-up circuit, and by the envelope signal in envelope detected electric circuit inspection NFC signal, then this envelope signal is decoded the information that wherein loads to obtain control signal by control module, then this control signal is sent to LED driver module, it is luminous with associative mode that LED driver module selects corresponding pattern to carry out driving LED display module according to this control signal.It not only achieves and controls this LED display module by NFC signal and carry out luminescence with associative mode, also powers for whole circuit structure, has and can realize luminous beneficial effect without the need to external power supply, is conducive to improving Consumer's Experience.
Accompanying drawing explanation
Fig. 1 is the theory diagram of LED display that the employing NFC that provides of one embodiment of the present invention controls and drives;
Fig. 2 is the theory diagram of LED display that the employing NFC that provides of another preferred embodiment of the present invention controls and drives;
Fig. 3 is the circuit theory diagrams of the LED driver module in some embodiments of the invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, a kind of LED display adopting NFC to control and drive in one embodiment of the present invention, it comprises LED display module 140, for receiving the antenna 100 of NFC signal, for the voltage transformation module 110 being converted to predetermined dimension voltage by the voltage in described NFC signal, for detecting the envelope detected circuit 150 of the envelope signal in described NFC signal, for decoding the control module 130 of control signal according to described envelope signal, the LED driver module 120 shown is carried out for driving described LED display module 140 according to described control signal, described antenna 100, described voltage transformation module 130, described LED driver module 120 and described LED display module 140 are electrically connected successively, the test side of described envelope detected circuit 150 is connected with described antenna 100, and the output terminal of described envelope detected circuit 150, described control module 130 and described LED driver module 120 connect successively.
The present invention is converted to the voltage of predetermined dimension by the NFC signal that antenna 100 receives by voltage transformation module 110, such as, be 3.3V in the present embodiment, power to give follow-up circuit, and detect the envelope signal in NFC signal by envelope detected circuit 150, then this envelope signal is decoded the information that wherein loads to obtain control signal by control module 130, then this control signal is sent to LED driver module 120, it is luminous with associative mode that LED driver module 120 selects corresponding pattern to carry out driving LED display module 140 according to this control signal.It not only achieves and controls this LED display module by NFC signal and carry out luminescence with associative mode, also powers for whole circuit structure, has and can realize luminous beneficial effect without the need to external power supply, is conducive to improving Consumer's Experience.
As shown in Figure 2, on basis embodiment illustrated in fig. 1, adopt in the LED display of NFC control and driving provided by the invention, also comprise the carrier detect detecting unit 160 of the carrier wave for detecting the NFC signal that described antenna 100 receives and the frequency translation unit 170 for the clock signal that described carrier wave converted to preset frequency, the clock signal changed out is sent to described control module 130 by described frequency translation unit 170.Carrier detect testing circuit conventional in this carrier detect detecting unit 160 prior art, this frequency translation unit 170 is freq converting circuit conventional in prior art, therefore repeats no more.
In the present embodiment, by utilizing the carrier wave in NFC signal and carrying out corresponding frequency inverted, namely can be the clock signal that control module 130 provides need of work, there is the beneficial effect simplifying circuit, reduce costs.
Particularly, as shown in Figure 3, adopt in the LED display of NFC control and driving provided by the invention, described LED driver module 120 comprise display mode selection unit, display mode storage unit, N export code translator and N number of switch element Q1, accordingly, described LED display module 140 comprises N number of LED.
Described control module 130 is common control chip, such as modem chip.The control signal output terminal of this control module 130, described display mode selection unit, display mode storage unit and described code translator connect successively, the control end of N number of delivery outlet of described code translator switch element Q1 N number of with this is respectively connected, the input end of this N number of switch element Q1 is connected with the voltage output end of described voltage transformation module respectively, the output terminal of this N number of switch element respectively LED N number of with this is connected, wherein, N be greater than 1 natural number.During work, control signal is sent to display mode selection unit by control module 130, display mode selection unit calls corresponding display mode data according to this control signal from display mode storage unit, code translator carries out decoding according to this display mode data, this N number of delivery outlet is made to export corresponding high level or low level respectively, make corresponding switch element Q1 conducting, thus make corresponding LED luminous.This display mode selection unit, display mode storage unit are selection circuit common in prior art and memory circuit, therefore do not repeat.
Further, adopt in the LED display of NFC control and driving provided by the invention, described switch element Q1 is fet.
Particularly, adopt in the LED display of NFC control and driving provided by the invention, described voltage transformation module 110 comprises amplitude limiter circuit, modulation circuit and the voltage conversion circuit for exporting predetermined voltage, and described antenna, described amplitude limiter circuit, described modulation circuit and described voltage conversion circuit connect successively.It is by the amplitude of amplitude limiter circuit restriction antenna ends input signal, and the amplitude of output signal is adjusted by modulation circuit, the voltage of predetermined dimension is converted the signal into finally by voltage conversion circuit, such as, in the present embodiment, this voltage conversion circuit is 3.3V voltage generation circuit, thinks that follow-up circuit provides the direct voltage of 3.3V.Described amplitude limiter circuit, described modulation circuit and described voltage conversion circuit are common functional circuit of the prior art, and and therefore not to repeat here.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, although with reference to previous embodiment to invention has been comparatively detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments or carry out equivalent replacement to wherein portion of techniques feature.All any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. the LED display adopting NFC to control and drive, it is characterized in that, comprise LED display module, for receive NFC signal antenna, for by the voltage transformation module being converted to predetermined dimension voltage of the voltage in described NFC signal, be used for the envelope signal detected in described NFC signal envelope detected circuit, be used for according to described envelope signal decode control signal control module, be used for driving described LED display module to carry out the LED driver module shown according to described control signal; Described antenna, described voltage transformation module, described LED driver module and described LED display module are electrically connected successively, the test side of described envelope detected circuit is connected with described antenna, and the output terminal of described envelope detected circuit, described control module and described LED driver module connect successively.
2. the LED display of employing NFC according to claim 1 control and driving, it is characterized in that, described LED driver module comprise display mode selection unit, display mode storage unit, N export code translator and N number of switch element, described LED display module comprises N number of light emitting diode; The control signal output terminal of described control circuit, described display mode selection unit, described display mode storage unit and described code translator connect successively, the control end of N number of delivery outlet of described code translator switch element N number of with this is respectively connected, the input end of this N number of switch element is connected with the voltage output end of described voltage transformation module respectively, the output terminal of this N number of switch element respectively light emitting diode N number of with this is connected, wherein, N be greater than 1 natural number.
3. the LED display of employing NFC according to claim 2 control and driving, it is characterized in that, described switch element is fet.
4. the LED display of employing NFC according to claim 1 control and driving, it is characterized in that, also comprise the carrier detect detecting unit of the carrier wave for detecting the NFC signal that described antenna receives and the frequency translation unit for the clock signal that described carrier wave converted to preset frequency, the clock signal changed out is sent to described control module by described frequency translation unit.
5. the LED display of employing NFC according to claim 1 control and driving, it is characterized in that, described voltage transformation module comprises amplitude limiter circuit, modulation circuit and the voltage conversion circuit for exporting predetermined voltage, and described antenna, described amplitude limiter circuit, described modulation circuit and described voltage conversion circuit connect successively.
6. the LED display adopting NFC to control and drive, it is characterized in that, comprise LED display module, for receive NFC signal antenna, for by the voltage transformation module being converted to predetermined dimension voltage of the voltage in described NFC signal, be used for the envelope signal detected in described NFC signal envelope detected circuit, be used for according to described envelope signal decode control signal control module, be used for driving described LED display module to carry out the LED driver module shown according to described control signal; Described antenna, described voltage transformation module, described LED driver module and described LED display module are electrically connected successively, the test side of described envelope detected circuit is connected with described antenna, and the output terminal of described envelope detected circuit, described control module and described LED driver module connect successively;
Described LED driver module comprise display mode selection unit, display mode storage unit, N export code translator and N number of switch element, described LED display module comprises N number of light emitting diode; The control signal output terminal of described control circuit, described display mode selection unit, described display mode storage unit and described code translator connect successively, the control end of N number of delivery outlet of described code translator switch element N number of with this is respectively connected, the input end of this N number of switch element is connected with the voltage output end of described voltage transformation module respectively, the output terminal of this N number of switch element respectively light emitting diode N number of with this is connected, wherein, N be greater than 1 natural number;
Described employing NFC controls and the LED display that drives also comprises the carrier detect detecting unit of the carrier wave for detecting the NFC signal that described antenna receives and the frequency translation unit for the clock signal that described carrier wave converted to preset frequency, and the clock signal changed out is sent to described control module by described frequency translation unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610014623.3A CN105448237A (en) | 2016-01-11 | 2016-01-11 | LED display apparatus controlled and driven by use of NFC |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610014623.3A CN105448237A (en) | 2016-01-11 | 2016-01-11 | LED display apparatus controlled and driven by use of NFC |
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| CN105448237A true CN105448237A (en) | 2016-03-30 |
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| CN201610014623.3A Pending CN105448237A (en) | 2016-01-11 | 2016-01-11 | LED display apparatus controlled and driven by use of NFC |
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Cited By (3)
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| CN109787658A (en) * | 2018-12-07 | 2019-05-21 | 福建华佳彩有限公司 | A kind of NFC coil-driving apparatus of electronic, method and electronic equipment |
| CN114114889A (en) * | 2021-10-29 | 2022-03-01 | 珠海读书郎软件科技有限公司 | Telephone watch based on NFC and ink screen and background switching method thereof |
| CN114495806A (en) * | 2022-02-09 | 2022-05-13 | 美盈森集团股份有限公司 | Driving method and device of NFC electroluminescent device, electronic equipment and medium |
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Cited By (5)
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| CN109787658A (en) * | 2018-12-07 | 2019-05-21 | 福建华佳彩有限公司 | A kind of NFC coil-driving apparatus of electronic, method and electronic equipment |
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| CN114495806A (en) * | 2022-02-09 | 2022-05-13 | 美盈森集团股份有限公司 | Driving method and device of NFC electroluminescent device, electronic equipment and medium |
| CN114495806B (en) * | 2022-02-09 | 2023-11-14 | 美盈森集团股份有限公司 | Driving method and device of NFC electroluminescent device, electronic equipment and medium |
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