CN201570233U - LED dot-matrix drive circuit with audio equalizer and animation display - Google Patents
LED dot-matrix drive circuit with audio equalizer and animation display Download PDFInfo
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- CN201570233U CN201570233U CN2009202572211U CN200920257221U CN201570233U CN 201570233 U CN201570233 U CN 201570233U CN 2009202572211 U CN2009202572211 U CN 2009202572211U CN 200920257221 U CN200920257221 U CN 200920257221U CN 201570233 U CN201570233 U CN 201570233U
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Abstract
The utility model relates to an LED dot-matrix drive circuit with an audio equalizer and an animation display, which comprises the parts integrated on a chip. The output end of a preposed audio frequency amplifier is connected with an equalizer with seven paths of band pass, an analog-digital converter, a spectrum display controller, an LED driving controller in sequence; an I2C interface is also integrated on the chip and respectively connected with the input of the LED driving controller and the output of the analog-digital converter, is connected with the preposed audio frequency amplifier by a gain selection controller and connected with an RAM memory by an RAM read-write controller; the output end of the RAM memory is connected with the LED driving controller; and the output end of the LED driving controller is connected with an output driver. The LED dot-matrix drive circuit has the advantages that the drive circuit is integrated with the programmable preposed amplifier, thereby improving the adaptability to different sound sources; the drive circuit is integrated with a filter with multiple paths of band pass and the analog-digital converter, thereby accurately measuring the amplitude of audio at different frequency bands; and the automatic audio frequency display directly drives the LED, thus simplifying working of a main chip.
Description
Technical field
The utility model relates to a kind of integrated circuit, especially a kind of LED dot matrix driving circuit with audio equalizer and animation display.
Background technology
Along with multimedia audio-video is applied in popularizing on the small household appliances, a large amount of handheld devices need be with the system scheme of music and display driver integration.This product is exactly to pass through audio signal processor, and analog to digital converter and LED drive the integrated incorporate audio frequency displaying scheme that provides is provided.Such function that will realize product in the past adopts the method for general-purpose device (as: operational amplifier, wave filter, single-chip microcomputer, LED display driver etc.) combination to realize usually.Such method is the cost height not only, and volume is big, and power consumption is big, be not easy on little handheld device, adopt, and the combination of a plurality of modules also makes the reliability of system reduce greatly, in addition, because music data will pass through software processes, thereby the real-time that music data shows, authenticity have been reduced.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of LED dot matrix driving circuit with audio equalizer and animation display is provided, simplify the system schema that audio frequency LED drives, and apply it to as mobile phone, MP4 in the portable multimedia apparatus such as mini audio, reduces the realization cost of system, dwindle the volume of module, the reliability of enhanced system.
The technical scheme that provides according to the utility model, the LED dot matrix driving circuit of described band audio equalizer and animation display is included in audio preamplifier able to programme integrated on a slice chip, 7 sections bands lead to balanced device, analog to digital converter, frequency spectrum display controller, LED driving governor, output driver, RAM read-write controller, RAM storer, the output terminal of described audio preamplifier connects the logical balanced device of described 7 sections bands, analog to digital converter, frequency spectrum display controller, LED driving governor successively, also is integrated with I on the described chip
2C interface, I
2C interface connect respectively input, the analog to digital converter of LED driving governor output, connect audio preamplifier, connect the RAM storer by the gain selection control by the RAM read-write controller, the output terminal of RAM storer connects the LED driving governor, and the output terminal of LED driving governor connects output driver; Also be integrated with oscillator and frequency divider on the described chip, the output of described oscillator connects the logical balanced device of described 7 sections bands, analog to digital converter, frequency spectrum display controller, LED driving governor and RAM read-write controller by frequency divider.
The logical balanced device of described 7 sections bands comprises that the output of 7 bandpass filter connects peak detctor separately respectively, connects described analog to digital converter through multi-way switch again.
The frequency of described 7 bandpass filter is respectively 63Hz, 160Hz, 400Hz, 1KHz, 2.5KHz, 6.25KHz, 12KHz.
Described frequency spectrum display controller comprises that digital comparator exports 7 road energy post control signals and send into the LED driving governor.
The utility model has the advantages that:
1, integrated programmable prime amplifier has strengthened the adaptability to different sources of sound;
2, integrated multipath bandpass filter and analog to digital converter are accurately measured the amplitude of different frequency section audio;
3, the automatic direct driving LED of frequency spectrum display controller has been simplified the work of master chip;
4, built-in self-scanning need not external software and handles in real time;
5, adopt I
2C interface makes product have good compatibility;
6, multiple spot battle array pattern can realize that the Chinese character of character library commonly used shows (10 * 10,12 * 12);
7, the synchronous LED dot matrix shows 7 band energy posts of music balanced device effect;
8, the gradually dark effect that gets brighter of any picture;
9, built-in RAM can be realized the automatic demonstration of multiframe picture, increases the dirigibility of system greatly.
Description of drawings
Fig. 1 is a system architecture synoptic diagram of the present utility model.
Fig. 2 is the structural representation of the utility model embodiment.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
As shown in Figure 1: all circuit monolithics of the utility model are integrated, comprising: the output terminal of audio preamplifier connects 7 sections logical balanced devices of band, analog to digital converter, frequency spectrum display controller, LED driving governor, I successively
2C interface connect respectively input, the analog to digital converter of LED driving governor output, connect audio preamplifier, connect the RAM storer by the gain selection control by the RAM read-write controller, the output terminal of RAM storer connects the LED driving governor, and the output terminal of LED driving governor connects output driver; The output of oscillator connects the logical balanced device of described 7 sections bands, analog to digital converter, frequency spectrum display controller, LED driving governor and RAM read-write controller by frequency divider.
In Fig. 1, after handling through the audio preamplifier of adjustable gain, voice signal AIN sends into the range value that 7 sections logical balanced devices of band produce 7 Frequency point signals, these range values carry out the A/D conversion in analog to digital converter, convert corresponding digital signal to, handle through the frequency spectrum display controller, the control signal that is transformed into the LED demonstration is sent in the LED driving governor, the LED driving governor is sent this control signal into output driver driving LED dot matrix screen and is shown under the pattern that is configured to the frequency spectrum demonstration, just can see with the synchronous frequency spectrum of music like this to show on LED dot matrix screen.In addition, the result of analog to digital converter can pass through I
2C interface is uploaded to main leaf, makes things convenient for main leaf to utilize these data to do other application.
The multiframe picture data is through SDA, two I of SCL
2The C protocol interface is sent in the RAM read-write controller, writes under the control at RAM the multiframe picture data is write in the RAM storer, reads the video data of each frame picture in the RAM storer successively under RAM reads to control, and passes through I
2The order that C interface sends is provided with the demonstration time of every frame picture and the quantity of display frame picture, driving LED dot matrix screen shows the LED driving governor on the output driver being configured under the pattern that picture shows this picture data delivered to, the automatic display effect that on LED dot matrix screen, just can see the multiframe picture like this, at 10*10, under the 12*12 dot pattern, also can realize the automatic demonstration of a plurality of Chinese characters in the character library commonly used.
In Fig. 2, voice signal AIN delivers to 63Hz respectively after handling through audio preamplifier, 160Hz, 400Hz, 1KHz, 2.5KHz 6.25KHz is in the 12KHz bandpass filter, isolate 7 Frequency points, deliver to the range value that detects each Frequency point in the peak detctor separately, these range values are chosen to send into successively through multi-way switch and are carried out the A/D conversion in the analog to digital converter, and the digital quantity that transforms out produces 63Hz through digital comparator, 160Hz, 400Hz, 1KHz, 2.5KHz, 6.25KHz, the energy post control signal of 12KHz, these energy post control signals are sent into the drive signal that produces output driver in the LED display driver control and are lighted LED dot matrix screen, thereby just can make things convenient for the flicker effect of seeing intuitively with the synchronous energy post of voice signal (energy post height is 8 LED points) at LED dot matrix screen.In addition, at 10*10, can be in the 12*12LED array by commanded level and the vertical position at LED dot matrix screen of moving 7 frequency energy posts.
The utility model can be applied to as mobile phone, and MP4 in the portable multimedia apparatus such as mini audio, reduces the realization cost of system, dwindles the volume of module, the reliability of enhanced system; Increased the interface of music LED display module and master chip simultaneously, make it have higher flexibility, the multiframe picture can also be deposited among the built-in RAM by this interface, draw the quantity that shows by demonstration time and pattern that every frame picture is set, the automatic dynamic that can realize the multiframe picture shows, can reduce the burden that master chip sends picture data in real time like this; As apply it to the dynamic LED demonstration that field of mobile phones realizes the Inbound Calls name, also can solve the elderly does not see the word on the liquid crystal display because of dim eyesight worry.
Claims (4)
1. be with the LED dot matrix driving circuit of audio equalizer and animation display, it is characterized in that: be included in audio preamplifier able to programme integrated on a slice chip, 7 sections logical balanced devices of band, analog to digital converter, frequency spectrum display controller, LED driving governor, output driver, RAM read-write controller, RAM storer, the output terminal of described audio preamplifier connects the logical balanced device of described 7 sections bands, analog to digital converter, frequency spectrum display controller, LED driving governor successively, also is integrated with I on the described chip
2C interface, I
2C interface connect respectively input, the analog to digital converter of LED driving governor output, connect audio preamplifier, connect the RAM storer by the gain selection control by the RAM read-write controller, the output terminal of RAM storer connects the LED driving governor, and the output terminal of LED driving governor connects output driver; Also be integrated with oscillator and frequency divider on the described chip, the output of described oscillator connects the logical balanced device of described 7 sections bands, analog to digital converter, frequency spectrum display controller, LED driving governor and RAM read-write controller by frequency divider.
2. the LED dot matrix driving circuit of band audio equalizer as claimed in claim 1 and animation display, it is characterized in that the logical balanced device of described 7 sections bands comprises that the output of 7 bandpass filter connects peak detctor separately respectively, connects described analog to digital converter through multi-way switch again.
3. the LED dot matrix driving circuit of band audio equalizer as claimed in claim 2 and animation display, the frequency that it is characterized in that described 7 bandpass filter is respectively 63Hz, 160Hz, 400Hz, 1KHz, 2.5KHz, 6.25KHz, 12KHz.
4. the LED dot matrix driving circuit of band audio equalizer as claimed in claim 1 and animation display is characterized in that described frequency spectrum display controller comprises that digital comparator exports 7 road energy post control signals and send into the LED driving governor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202572211U CN201570233U (en) | 2009-11-05 | 2009-11-05 | LED dot-matrix drive circuit with audio equalizer and animation display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202572211U CN201570233U (en) | 2009-11-05 | 2009-11-05 | LED dot-matrix drive circuit with audio equalizer and animation display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201570233U true CN201570233U (en) | 2010-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202572211U Expired - Lifetime CN201570233U (en) | 2009-11-05 | 2009-11-05 | LED dot-matrix drive circuit with audio equalizer and animation display |
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|---|---|
| CN (1) | CN201570233U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101938876A (en) * | 2010-09-19 | 2011-01-05 | 无锡力芯微电子股份有限公司 | Led drive circuit |
| CN102215293A (en) * | 2011-05-19 | 2011-10-12 | 珠海市魅族科技有限公司 | Led dynamic display module and control method thereof |
| CN105451128A (en) * | 2014-09-01 | 2016-03-30 | Tcl通力电子（惠州）有限公司 | LED audio spectrum display method, circuit, and sound equipment |
| CN105511833A (en) * | 2015-11-25 | 2016-04-20 | 广州周立功单片机科技有限公司 | Method for audio spectrum and animation display and system |
| CN107306462A (en) * | 2016-04-19 | 2017-10-31 | 齐鲁工业大学 | A kind of LED battle array Audio presentation device and its Fourier modes fuzzy control method |
| CN108111948A (en) * | 2016-11-18 | 2018-06-01 | 谷歌有限责任公司 | The visual output that server at speech interface equipment provides |
| CN108235182A (en) * | 2017-12-28 | 2018-06-29 | 四川国鑫机械制造有限公司 | It can detect and show the circuit of sound frequency |
| CN108449686A (en) * | 2018-03-09 | 2018-08-24 | 福建捷联电子有限公司 | A kind of display and its method fitted music and show ambient light |
| CN110120192A (en) * | 2019-06-11 | 2019-08-13 | 沈德稳 | A kind of Multifunctional LED dot matrix display screen |
| CN111258381A (en) * | 2015-12-01 | 2020-06-09 | 三星电子株式会社 | Display apparatus and control method thereof |
-
2009
- 2009-11-05 CN CN2009202572211U patent/CN201570233U/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101938876B (en) * | 2010-09-19 | 2013-03-13 | 无锡力芯微电子股份有限公司 | Led drive circuit |
| CN101938876A (en) * | 2010-09-19 | 2011-01-05 | 无锡力芯微电子股份有限公司 | Led drive circuit |
| CN102215293A (en) * | 2011-05-19 | 2011-10-12 | 珠海市魅族科技有限公司 | Led dynamic display module and control method thereof |
| CN105451128A (en) * | 2014-09-01 | 2016-03-30 | Tcl通力电子（惠州）有限公司 | LED audio spectrum display method, circuit, and sound equipment |
| CN105451128B (en) * | 2014-09-01 | 2018-11-02 | Tcl通力电子（惠州）有限公司 | LED shows method, circuit and the stereo set of audible spectrum |
| CN105511833B (en) * | 2015-11-25 | 2018-08-28 | 广州周立功单片机科技有限公司 | Audible spectrum, cartoon display method and system |
| CN105511833A (en) * | 2015-11-25 | 2016-04-20 | 广州周立功单片机科技有限公司 | Method for audio spectrum and animation display and system |
| CN111258381A (en) * | 2015-12-01 | 2020-06-09 | 三星电子株式会社 | Display apparatus and control method thereof |
| EP3668091A2 (en) * | 2015-12-01 | 2020-06-17 | Samsung Electronics Co., Ltd. | Display apparatus and controlling method thereof |
| CN107306462A (en) * | 2016-04-19 | 2017-10-31 | 齐鲁工业大学 | A kind of LED battle array Audio presentation device and its Fourier modes fuzzy control method |
| CN108111948A (en) * | 2016-11-18 | 2018-06-01 | 谷歌有限责任公司 | The visual output that server at speech interface equipment provides |
| CN108111948B (en) * | 2016-11-18 | 2021-04-02 | 谷歌有限责任公司 | Server-provided visual output at a voice interface device |
| US11521469B2 (en) | 2016-11-18 | 2022-12-06 | Google Llc | Server-provided visual output at a voice interface device |
| US11972678B2 (en) | 2016-11-18 | 2024-04-30 | Google Llc | Server-provided visual output at a voice interface device |
| CN108235182A (en) * | 2017-12-28 | 2018-06-29 | 四川国鑫机械制造有限公司 | It can detect and show the circuit of sound frequency |
| CN108449686A (en) * | 2018-03-09 | 2018-08-24 | 福建捷联电子有限公司 | A kind of display and its method fitted music and show ambient light |
| CN110120192A (en) * | 2019-06-11 | 2019-08-13 | 沈德稳 | A kind of Multifunctional LED dot matrix display screen |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
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Granted publication date: 20100901 |