WO2010040316A1 - Lamp apparatus capable of controlling brightness according to audio signal - Google Patents

Lamp apparatus capable of controlling brightness according to audio signal Download PDF

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Publication number
WO2010040316A1
WO2010040316A1 PCT/CN2009/074321 CN2009074321W WO2010040316A1 WO 2010040316 A1 WO2010040316 A1 WO 2010040316A1 CN 2009074321 W CN2009074321 W CN 2009074321W WO 2010040316 A1 WO2010040316 A1 WO 2010040316A1
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WIPO (PCT)
Prior art keywords
audio signal
unit
power amplifying
led
breathing
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Application number
PCT/CN2009/074321
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French (fr)
Chinese (zh)
Inventor
尹航
Original Assignee
华为终端有限公司
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Publication of WO2010040316A1 publication Critical patent/WO2010040316A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63J—DEVICES FOR THEATRES, CIRCUSES, OR THE LIKE; CONJURING APPLIANCES OR THE LIKE
    • A63J17/00—Apparatus for performing colour-music
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/105—Controlling the light source in response to determined parameters
    • H05B47/115—Controlling the light source in response to determined parameters by determining the presence or movement of objects or living beings
    • H05B47/12—Controlling the light source in response to determined parameters by determining the presence or movement of objects or living beings by detecting audible sound
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/32—Pulse-control circuits
    • H05B45/325—Pulse-width modulation [PWM]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Definitions

  • the present invention relates to the field of electrical technology, and in particular to a breathing light device. Background technique
  • the breathing lamp device is applied to the terminal device, and the brightness of the LED (Light Emitting Diode) in the device changes with the amplitude and frequency of the audio signal.
  • the amplitude of the audio signal is large, the brightness of the LED is high; when the amplitude of the audio signal is small, the brightness of the LED is low, which produces a "breathing" effect.
  • the breathing light device can increase the visual prompt while the terminal device performs the audio prompting, thereby improving the user's interest in using the terminal device.
  • the industry uses a dedicated IC (Integrated Circuit) to drive the LEDs in the breathing light device to change brightness with the audio signal.
  • the LED drive current is controlled by the circuit inside the IC to change the amplitude and frequency of the audio signal, and the visual effect of "rhythm lamp” and “breathing lamp” is generated.
  • Embodiments of the present invention provide a breathing light device that optimizes the circuit structure of the device.
  • a breathing light device including: a power amplifying unit and a driving unit;
  • the power amplifying unit receives and amplifies an audio signal, and sends the amplified audio signal to the driving unit;
  • the driving unit is connected to the power amplifying unit, receives the amplified audio signal, and adjusts a driving current of the LED light emitting diode by the amplified audio signal to control brightness of the LED.
  • the technical solution of the embodiment of the invention has the following advantages, because the universal device in the terminal device where the breathing lamp device is located realizes the function of the breathing lamp, thereby improving the use of the added value of the device and simplifying the breathing while ensuring the original function of the device.
  • the circuit structure of the lamp device improves the versatility of the breathing lamp device.
  • FIG. 1 is a schematic structural view of a breathing lamp device according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a circuit principle of a breathing lamp device according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural view of another breathing light device according to an embodiment of the present invention. detailed description
  • FIG. 1 it is a schematic structural diagram of a breathing lamp device according to an embodiment of the present invention, including: a power amplifying unit 101 and a driving unit 102.
  • the power amplifying unit 101 receives and amplifies the audio signal, and transmits the amplified audio signal to the driving unit 102.
  • the power amplifying unit 101 in the embodiment of the present invention may be a general-purpose device in a terminal device where the breathing lamp device is located, such as a class D audio power amplifier.
  • the input of the power amplifying unit 101 is an original unamplified audio signal, and the output is an amplified PWM (Pulse Width Modulation) format audio signal.
  • PWM Pulse Width Modulation
  • the driving unit 102 is connected to the power amplifying unit 101, receives the amplified audio signal, and adjusts the driving current of the LED by the amplified audio signal to control the brightness of the LED.
  • An input of the driving unit 102 is connected to an output of the power amplifying unit 101.
  • the power amplifying unit 101 and the driving unit 102 in the embodiment of the present invention may be general-purpose devices in the terminal device where the breathing lamp device is located: a class D audio power amplifier and an LED driving chip.
  • the PWM-modulated audio signal output from the Class D audio power amplifier can be connected to the brightness control signal terminal of the LED driver chip.
  • the PWM audio signal output by the power amplifying unit 101 is the same as the frequency and amplitude of the input audio signal.
  • the control signal for controlling the LED current is a P medical signal, that is, the P medical audio signal output by the power amplifying unit 101.
  • the medical audio signal of the P is the same as the brightness of the LED.
  • FIG. 2 it is a schematic diagram of a circuit principle of a breathing lamp device according to an embodiment of the present invention, which includes: a class D audio power amplifier 201 and an LED driver chip 202.
  • the audio input of the class D audio power amplifier 201 is the original unamplified audio signal, and the audio output is the modulated PWM signal.
  • the single-ended output signal end of the class D audio power amplifier 201 is connected to the LED brightness control signal end of the LED driving chip 202.
  • the driving current of the LED is adjusted to control the brightness of the LED.
  • the D-type audio power amplifier 201 is a differential output, and the input is two signals.
  • the effective input signal is the difference between the two signals, and the output signal is the amplification of the difference between the two input signals, thereby achieving the purpose of suppressing common mode interference.
  • the breathing lamp device in the embodiment of the invention can be applied to various terminal devices such as mobile phones, MP3s, media playing terminals, portable game machines, and the like, which output sounds and LED backlights.
  • Most of the above terminal devices use Class D audio amplifiers and LED driver chips to amplify audio signals and illuminate LED backlights. It is possible to directly connect one output of an existing Class D audio power amplifier to the control terminal of the LED driver chip, and construct a breathing lamp device using the existing device.
  • the technical solution of the embodiment of the present invention has the following advantages, because the optimized and innovative application of the existing circuit is adopted, and the special ic is replaced, and the function of the breathing lamp is realized, thereby improving the original function of the universal device while improving
  • the use of additional values simplifies the circuit structure of the breathing light device, increases the versatility of the breathing light device, and reduces the cost of the breathing light device.
  • FIG. 3 it is a schematic structural diagram of another breathing lamp device according to an embodiment of the present invention, which includes: a power amplifying unit 301, a driving unit 302, and a blocking circuit unit 303.
  • the power amplifying unit 301 receives and amplifies the audio signal, and transmits the amplified audio signal to the driving unit 302.
  • the power amplifying unit 301 in the embodiment of the present invention may be a general-purpose device in a terminal device where the breathing lamp device is located, such as a class D audio power amplifier.
  • the input of the power amplifying unit 301 is an original unamplified audio signal, and the output is an amplified PWM format audio signal.
  • the driving unit 302 is connected to the power amplifying unit 301, receives the amplified audio signal, and adjusts the driving current of the LED by the amplified audio signal to control the brightness of the LED.
  • Drive unit 302 is connected to the power amplifying unit 301, receives the amplified audio signal, and adjusts the driving current of the LED by the amplified audio signal to control the brightness of the LED.
  • the input of 302 is coupled to the output of power amplifying unit 301.
  • the power amplifying unit 301 and the driving unit 302 in the embodiment of the present invention may be general-purpose devices in the terminal device where the breathing lamp device is located respectively: a class D audio power amplifier and an LED driving chip.
  • the PWM modulated audio signal outputted by the class D audio power amplifier can be connected to the brightness control signal end of the LED driving chip.
  • the PWM audio signal outputted by the power amplifying unit 301 is the same as the frequency and amplitude of the input audio signal.
  • the control signal for controlling the LED current is the P medical signal, that is, the P medical audio signal output by the power amplifying unit 301.
  • the medical audio signal of the P is the same as the brightness of the LED.
  • the DC blocking circuit unit 303 is connected to the power amplifying unit 301 and the driving unit 302, and blocks the DC voltage component output from the power amplifying unit 301 to the driving unit 302.
  • a DC blocking circuit unit 303 is added between the power amplifying unit 301 and the driving unit 302.
  • the power amplifying unit 301, the driving unit 302 and the blocking circuit unit 303 in the embodiment of the present invention may be general-purpose devices in the terminal device: a class D audio power amplifier, an LED driving chip, and a DC blocking capacitor.
  • the DC blocking capacitor is connected between the output end of the Class D audio power amplifier and the control terminal of the LED driving chip to protect the control terminal of the LED driving chip from the DC voltage component.
  • the breathing lamp device in the embodiment of the invention can be applied to various terminal devices such as mobile phones, MP3s, media playing terminals, portable game machines, and the like, which output sounds and LED backlights.
  • Most of the above terminal devices use Class D audio amplifiers and LED driver chips to amplify audio signals and illuminate LED backlights.
  • One output of the existing Class D audio power amplifier can be directly connected to the control terminal of the LED driving chip through a DC blocking capacitor, and the breathing device can be constructed by using the existing device.
  • the technical solution of the embodiment of the present invention has the following advantages, because the optimized and innovative application of the existing circuit is adopted, the special IC is replaced, and the function of the breathing lamp is realized, thereby improving the original function of the universal device and improving the original function.
  • the use of additional values simplifies the circuit structure of the breathing light device, increases the versatility of the breathing light device, and reduces the cost of the breathing light device.

Abstract

A lamp apparatus capable of controlling brightness according to an audio signal, the lamp apparatus comprises a power amplifier unit (101) and a driving unit (102). The power amplifier unit (101) receives and amplifies the audio signal, and sends the amplified audio signal to the driving unit (102), the driving unit (102) which is connected to the power amplifier unit (101) receives the amplified audio signal; driving current of a LED is adjusted according to the amplified audio signal, and the brightness of the LED is controlled.

Description

可根据音頻信号控制亮度的灯裝置 本申请要求 2008年 10月 9日递交的申请号为 200820135861.0、 发明名 称为 "一种呼吸灯装置" 的中国专利申请的优先权， 其全部内容通过引用结 合在本申请中。 技术领域  The present invention claims priority to Chinese Patent Application No. 200820135861.0, entitled "A Breathing Light Device", filed on October 9, 2008, the entire contents of which are incorporated by reference. In this application. Technical field
本发明涉及电气技术领域， 特别是涉及一种呼吸灯装置。 背景技术  The present invention relates to the field of electrical technology, and in particular to a breathing light device. Background technique
呼吸灯装置应用于终端设备， 装置中的 LED (Light Emitting Diode, 发 光二极管） 的亮度随音频信号幅度、 频率而产生亮度变化的效果。 音频信号 幅度大时， LED亮度高； 音频信号幅度小时， LED亮度低， 产生 "呼吸" 的效果。 呼吸灯装置可以在终端设备进行音频提示的同时， 增加视觉提示， 提高用户使用终端设备的趣味性。  The breathing lamp device is applied to the terminal device, and the brightness of the LED (Light Emitting Diode) in the device changes with the amplitude and frequency of the audio signal. When the amplitude of the audio signal is large, the brightness of the LED is high; when the amplitude of the audio signal is small, the brightness of the LED is low, which produces a "breathing" effect. The breathing light device can increase the visual prompt while the terminal device performs the audio prompting, thereby improving the user's interest in using the terminal device.
目前， 业界使用专用 IC (Integrated Circuit, 集成电路） ， 驱动呼吸灯 装置中的 LED随音频信号同歩变化亮度。 音频信号输入专用 IC后， 通过专 用 IC内部的电路， 控制 LED驱动电流大小随音频信号幅度、 频率改变， 产 生 "节奏灯" 、 "呼吸灯" 的视觉效果。  Currently, the industry uses a dedicated IC (Integrated Circuit) to drive the LEDs in the breathing light device to change brightness with the audio signal. After the audio signal is input to the dedicated IC, the LED drive current is controlled by the circuit inside the IC to change the amplitude and frequency of the audio signal, and the visual effect of "rhythm lamp" and "breathing lamp" is generated.
发明人在实现本发明的过程中， 发现现有技术至少存在如下问题： 现有技术使用专用 IC实现 "呼吸灯"功能， 电路复杂， 通用性差， 成 本高。 发明内容  In the process of implementing the present invention, the inventors have found that at least the following problems exist in the prior art: The prior art uses a dedicated IC to implement a "breathing light" function, which is complicated in circuit, poor in versatility, and high in cost. Summary of the invention
本发明实施例提供一种呼吸灯装置， 优化了装置的电路结构。 为达到上述目的， 本发明实施例提出一种呼吸灯装置， 包括： 功率放大 单元和驱动单元； Embodiments of the present invention provide a breathing light device that optimizes the circuit structure of the device. In order to achieve the above objective, an embodiment of the present invention provides a breathing light device, including: a power amplifying unit and a driving unit;
所述功率放大单元， 接收并放大音频信号， 将放大后的所述音频信号发 送到所述驱动单元；  The power amplifying unit receives and amplifies an audio signal, and sends the amplified audio signal to the driving unit;
所述驱动单元， 与所述功率放大单元连接， 接收所述放大后的音频信 号， 通过所述放大后的音频信号调整 LED发光二极管的驱动电流， 控制所 述 LED的亮度。  The driving unit is connected to the power amplifying unit, receives the amplified audio signal, and adjusts a driving current of the LED light emitting diode by the amplified audio signal to control brightness of the LED.
本发明实施例的技术方案具有以下优点， 因为采用呼吸灯装置所在终端 设备中的通用器件实现了呼吸灯的功能， 从而， 在保证器件原功能的同时， 提高了器件使用附加值， 简化了呼吸灯装置的电路结构， 提高了呼吸灯装置 的通用性。 附图说明  The technical solution of the embodiment of the invention has the following advantages, because the universal device in the terminal device where the breathing lamp device is located realizes the function of the breathing lamp, thereby improving the use of the added value of the device and simplifying the breathing while ensuring the original function of the device. The circuit structure of the lamp device improves the versatility of the breathing lamp device. DRAWINGS
为了更清楚地说明本发明实施例或现有技术中的技术方案， 下面将对实 施例或现有技术描述中所需要使用的附图作简单地介绍， 显而易见地， 下面 描述中的附图仅仅是本发明的一些实施例， 对于本领域普通技术人员来讲， 在不付出创造性劳动性的前提下， 还可以根据这些附图获得其他的附图。  In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.
图 1为本发明实施例中的一种呼吸灯装置的结构示意图；  1 is a schematic structural view of a breathing lamp device according to an embodiment of the present invention;
图 2为本发明实施例中的呼吸灯装置的电路原理示意图；  2 is a schematic diagram of a circuit principle of a breathing lamp device according to an embodiment of the present invention;
图 3为本发明实施例中的另一种呼吸灯装置的结构示意图。 具体实施方式  FIG. 3 is a schematic structural view of another breathing light device according to an embodiment of the present invention. detailed description
下面将结合本发明实施例中的附图， 对本发明实施例中的技术方案进行 清楚、 完整地描述， 显然， 所描述的实施例是本发明一部分实施例， 而不是 全部的实施例。 基于本发明中的实施例， 本领域普通技术人员在没有作出创 造性劳动前提下所获得的所有其他实施例， 都属于本发明保护的范围。 如图 1 所示， 为本发明实施例中的一种呼吸灯装置的结构示意图， 包 括： 功率放大单元 101和驱动单元 102。 The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention. As shown in FIG. 1 , it is a schematic structural diagram of a breathing lamp device according to an embodiment of the present invention, including: a power amplifying unit 101 and a driving unit 102.
功率放大单元 101， 接收并放大音频信号， 将放大后的音频信号发送到 驱动单元 102。  The power amplifying unit 101 receives and amplifies the audio signal, and transmits the amplified audio signal to the driving unit 102.
本发明实施例中的功率放大单元 101， 可以为呼吸灯装置所在终端设备 中的通用器件， 如 D类音频功放。 功率放大单元 101的输入为原始未放大的 音频信号， 输出为放大后的 PWM ( Pul se Width Modulation , 脉冲宽度调 制） 格式的音频信号。  The power amplifying unit 101 in the embodiment of the present invention may be a general-purpose device in a terminal device where the breathing lamp device is located, such as a class D audio power amplifier. The input of the power amplifying unit 101 is an original unamplified audio signal, and the output is an amplified PWM (Pulse Width Modulation) format audio signal.
驱动单元 102， 与功率放大单元 101连接， 接收放大后的音频信号， 通 过该放大后的音频信号调整 LED 的驱动电流， 控制 LED 的亮度。 驱动单元 102的输入端连接于功率放大单元 101的输出端。  The driving unit 102 is connected to the power amplifying unit 101, receives the amplified audio signal, and adjusts the driving current of the LED by the amplified audio signal to control the brightness of the LED. An input of the driving unit 102 is connected to an output of the power amplifying unit 101.
本发明实施例中的功率放大单元 101和驱动单元 102， 可以分别为呼吸 灯装置所在终端设备中的通用器件： D类音频功放和 LED驱动芯片。 可以将 D类音频功放输出的 PWM调制后的音频信号， 连接到 LED驱动芯片的亮度控 制信号端。  The power amplifying unit 101 and the driving unit 102 in the embodiment of the present invention may be general-purpose devices in the terminal device where the breathing lamp device is located: a class D audio power amplifier and an LED driving chip. The PWM-modulated audio signal output from the Class D audio power amplifier can be connected to the brightness control signal terminal of the LED driver chip.
功率放大单元 101输出的 PWM音频信号与输入的音频信号的频率和幅度 同歩， 驱动单元 102内部， 控制 LED电流的控制信号为 P醫信号， 即功率放 大单元 101输出的 P醫音频信号， 该 P醫音频信号与 LED的亮度同歩， 通过 该 PWM音频信号作为共用信号链路， 可以使 LED亮度与输入的原始音频信号 的频率和幅度同歩， 实现呼吸灯的功能。  The PWM audio signal output by the power amplifying unit 101 is the same as the frequency and amplitude of the input audio signal. Inside the driving unit 102, the control signal for controlling the LED current is a P medical signal, that is, the P medical audio signal output by the power amplifying unit 101. The medical audio signal of the P is the same as the brightness of the LED. By using the PWM audio signal as a common signal link, the brightness of the LED and the frequency and amplitude of the input original audio signal can be made the same, and the function of the breathing light can be realized.
如图 2 所示， 为本发明实施例中的呼吸灯装置的电路原理示意图， 包 括： D类音频功放 201和 LED驱动芯片 202。  As shown in FIG. 2, it is a schematic diagram of a circuit principle of a breathing lamp device according to an embodiment of the present invention, which includes: a class D audio power amplifier 201 and an LED driver chip 202.
D类音频功放 201的音频输入为原始未放大的音频信号， 音频输出为调 制后的 PWM信号。 D类音频功放 201的单端输出信号端， 连接于 LED驱动芯 片 202的 LED亮度控制信号端。 通过 D类音频功放 201输出的 P醫信号， 调 整 LED的驱动电流， 控制 LED的亮度。 D类音频功放 201为差分输出， 输入为两个信号， 有效输入信号为上述 两个信号的差值， 输出信号是对上述两个输入信号之差的放大， 达到了抑制 共模干扰的目的。 The audio input of the class D audio power amplifier 201 is the original unamplified audio signal, and the audio output is the modulated PWM signal. The single-ended output signal end of the class D audio power amplifier 201 is connected to the LED brightness control signal end of the LED driving chip 202. Through the P medical signal outputted by the Class D audio power amplifier 201, the driving current of the LED is adjusted to control the brightness of the LED. The D-type audio power amplifier 201 is a differential output, and the input is two signals. The effective input signal is the difference between the two signals, and the output signal is the amplification of the difference between the two input signals, thereby achieving the purpose of suppressing common mode interference.
本发明实施例中的呼吸灯装置， 可应用于手机、 MP3、 媒体播放终端、 便携式游戏机等各种输出声音、 LED 背光的终端设备上。 上述终端设备大多 使用 D类音频功放和 LED驱动芯片来放大音频信号、 点亮 LED背光。 可以直 接将已有 D类音频功放的 1个输出端连接到 LED驱动芯片的控制端， 利用已 有器件构建呼吸灯装置。  The breathing lamp device in the embodiment of the invention can be applied to various terminal devices such as mobile phones, MP3s, media playing terminals, portable game machines, and the like, which output sounds and LED backlights. Most of the above terminal devices use Class D audio amplifiers and LED driver chips to amplify audio signals and illuminate LED backlights. It is possible to directly connect one output of an existing Class D audio power amplifier to the control terminal of the LED driver chip, and construct a breathing lamp device using the existing device.
本发明实施例的技术方案具有以下优点， 因为采用对现有电路的优化、 创新性地应用， 取代了专用 ic， 实现了呼吸灯的功能， 从而， 在保证通用 器件原功能的同时， 提高了器件使用附加值， 简化了呼吸灯装置的电路结 构， 提高了呼吸灯装置的通用性， 降低了呼吸灯装置的成本。  The technical solution of the embodiment of the present invention has the following advantages, because the optimized and innovative application of the existing circuit is adopted, and the special ic is replaced, and the function of the breathing lamp is realized, thereby improving the original function of the universal device while improving The use of additional values simplifies the circuit structure of the breathing light device, increases the versatility of the breathing light device, and reduces the cost of the breathing light device.
如图 3所示， 为本发明实施例中的另一种呼吸灯装置的结构示意图， 包 括： 功率放大单元 301、 驱动单元 302和隔直电路单元 303。  As shown in FIG. 3, it is a schematic structural diagram of another breathing lamp device according to an embodiment of the present invention, which includes: a power amplifying unit 301, a driving unit 302, and a blocking circuit unit 303.
功率放大单元 301， 接收并放大音频信号， 将放大后的音频信号发送到 驱动单元 302。  The power amplifying unit 301 receives and amplifies the audio signal, and transmits the amplified audio signal to the driving unit 302.
本发明实施例中的功率放大单元 301， 可以为呼吸灯装置所在终端设备 中的通用器件， 如 D类音频功放。 功率放大单元 301的输入为原始未放大的 音频信号， 输出为放大后的 PWM格式的音频信号。  The power amplifying unit 301 in the embodiment of the present invention may be a general-purpose device in a terminal device where the breathing lamp device is located, such as a class D audio power amplifier. The input of the power amplifying unit 301 is an original unamplified audio signal, and the output is an amplified PWM format audio signal.
驱动单元 302， 与功率放大单元 301连接， 接收放大后的音频信号， 通 过该放大后的音频信号调整 LED 的驱动电流， 控制 LED 的亮度。 驱动单元 The driving unit 302 is connected to the power amplifying unit 301, receives the amplified audio signal, and adjusts the driving current of the LED by the amplified audio signal to control the brightness of the LED. Drive unit
302的输入端连接于功率放大单元 301的输出端。 The input of 302 is coupled to the output of power amplifying unit 301.
本发明实施例中的功率放大单元 301和驱动单元 302， 可以分别为呼吸 灯装置所在终端设备中的通用器件： D类音频功放和 LED驱动芯片。 可以将 D类音频功放输出的 PWM调制后的音频信号， 连接到 LED驱动芯片的亮度控 制信号端。 功率放大单元 301输出的 PWM音频信号与输入的音频信号的频率和幅度 同歩， 驱动单元 302内部， 控制 LED电流的控制信号为 P醫信号， 即功率放 大单元 301输出的 P醫音频信号， 该 P醫音频信号与 LED的亮度同歩， 通过 该 PWM音频信号作为共用信号链路， 可以使 LED亮度与输入的原始音频信号 的频率和幅度同歩， 实现呼吸灯的功能。 The power amplifying unit 301 and the driving unit 302 in the embodiment of the present invention may be general-purpose devices in the terminal device where the breathing lamp device is located respectively: a class D audio power amplifier and an LED driving chip. The PWM modulated audio signal outputted by the class D audio power amplifier can be connected to the brightness control signal end of the LED driving chip. The PWM audio signal outputted by the power amplifying unit 301 is the same as the frequency and amplitude of the input audio signal. Inside the driving unit 302, the control signal for controlling the LED current is the P medical signal, that is, the P medical audio signal output by the power amplifying unit 301. The medical audio signal of the P is the same as the brightness of the LED. By using the PWM audio signal as a common signal link, the brightness of the LED and the frequency and amplitude of the input original audio signal can be made the same, and the function of the breathing light can be realized.
隔直电路单元 303， 与功率放大单元 301和驱动单元 302连接， 隔断功 率放大单元 301向驱动单元 302输出的直流电压分量。  The DC blocking circuit unit 303 is connected to the power amplifying unit 301 and the driving unit 302, and blocks the DC voltage component output from the power amplifying unit 301 to the driving unit 302.
实际应用中， 考虑到功率放大单元 301的输出中存在直流电压分量， 为 了保护驱动单元 302， 在功率放大单元 301和驱动单元 302之间增加了隔直 电路单元 303。 本发明实施例中的功率放大单元 301、 驱动单元 302和隔直 电路单元 303， 可以分别为终端设备中的通用器件： D类音频功放、 LED 驱 动芯片和隔直电容。 该隔直电容连接在 D类音频功放的输出端和 LED驱动芯 片的控制端之间， 保护 LED驱动芯片的控制端不受直流电压分量的影响。  In practical applications, in consideration of the presence of a DC voltage component in the output of the power amplifying unit 301, in order to protect the driving unit 302, a DC blocking circuit unit 303 is added between the power amplifying unit 301 and the driving unit 302. The power amplifying unit 301, the driving unit 302 and the blocking circuit unit 303 in the embodiment of the present invention may be general-purpose devices in the terminal device: a class D audio power amplifier, an LED driving chip, and a DC blocking capacitor. The DC blocking capacitor is connected between the output end of the Class D audio power amplifier and the control terminal of the LED driving chip to protect the control terminal of the LED driving chip from the DC voltage component.
本发明实施例中的呼吸灯装置， 可应用于手机、 MP3、 媒体播放终端、 便携式游戏机等各种输出声音、 LED 背光的终端设备上。 上述终端设备上大 多使用 D类音频功放和 LED驱动芯片来放大音频信号、 点亮 LED背光。 可以 直接将已有 D类音频功放的 1个输出端， 通过 1个隔直电容， 连接到 LED驱 动芯片的控制端， 利用已有器件构建呼吸灯装置。  The breathing lamp device in the embodiment of the invention can be applied to various terminal devices such as mobile phones, MP3s, media playing terminals, portable game machines, and the like, which output sounds and LED backlights. Most of the above terminal devices use Class D audio amplifiers and LED driver chips to amplify audio signals and illuminate LED backlights. One output of the existing Class D audio power amplifier can be directly connected to the control terminal of the LED driving chip through a DC blocking capacitor, and the breathing device can be constructed by using the existing device.
本发明实施例的技术方案具有以下优点， 因为采用对现有电路的优化、 创新性地应用， 取代了专用 IC , 实现了呼吸灯的功能， 从而， 在保证通用 器件原功能的同时， 提高了器件使用附加值， 简化了呼吸灯装置的电路结 构， 提高了呼吸灯装置的通用性， 降低了呼吸灯装置的成本。  The technical solution of the embodiment of the present invention has the following advantages, because the optimized and innovative application of the existing circuit is adopted, the special IC is replaced, and the function of the breathing lamp is realized, thereby improving the original function of the universal device and improving the original function. The use of additional values simplifies the circuit structure of the breathing light device, increases the versatility of the breathing light device, and reduces the cost of the breathing light device.
以上所述仅是本发明的优选实施方式， 应当指出， 对于本技术领域的普 通技术人员来说， 在不脱离本发明原理的前提下， 还可以做出若干改进和润 饰， 这些改进和润饰也应视本发明的保护范围。  The above description is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. The scope of protection of the invention should be considered.

Claims

权利要求书 Claim
1、 一种呼吸灯装置， 其特征在于， 包括： 功率放大单元和驱动单元； 所述功率放大单元， 接收并放大音频信号， 将放大后的所述音频信号发 送到所述驱动单元；  A breathing lamp device, comprising: a power amplifying unit and a driving unit; the power amplifying unit receiving and amplifying an audio signal, and transmitting the amplified audio signal to the driving unit;
所述驱动单元， 与所述功率放大单元连接， 接收所述放大后的音频信 号， 通过所述放大后的音频信号调整发光二极管 LED的驱动电流， 控制所述 LED的亮度。  The driving unit is connected to the power amplifying unit, receives the amplified audio signal, and adjusts a driving current of the LED by the amplified audio signal to control the brightness of the LED.
2、 如权利要求 1 所述呼吸灯装置， 其特征在于， 还包括： 隔直电路单 元；  2. The breathing lamp apparatus according to claim 1, further comprising: a DC blocking circuit unit;
所述隔直电路单元， 与所述功率放大单元和所述驱动单元连接， 隔断所 述功率放大单元向所述驱动单元输出的直流电压分量。  The DC blocking circuit unit is connected to the power amplifying unit and the driving unit to block a DC voltage component output by the power amplifying unit to the driving unit.
3、 如权利要求 1或 2所述呼吸灯装置， 其特征在于， 所述功率放大单 元和所述驱动单元为呼吸灯装置所在终端设备中的通用器件。  The breathing lamp apparatus according to claim 1 or 2, wherein the power amplifying unit and the driving unit are general-purpose devices in a terminal device in which the breathing lamp device is located.
4、 如权利要求 3 所述呼吸灯装置， 其特征在于， 所述放大后的音频信 号为脉冲宽度调制 PWM格式的音频信号。  The breathing light device according to claim 3, wherein the amplified audio signal is an audio signal of a pulse width modulation PWM format.
5、 如权利要求 3 所述呼吸灯装置， 其特征在于， 所述功率放大单元为 D类音频功放。  5. The breathing lamp apparatus according to claim 3, wherein the power amplifying unit is a class D audio power amplifier.
6、 如权利要求 3 所述呼吸灯装置， 其特征在于， 所述驱动单元为 LED 驱动芯片。  6. The breathing light device according to claim 3, wherein the driving unit is an LED driving chip.
7、 如权利要求 3 所述呼吸灯装置， 其特征在于， 所述驱动单元的输入 端连接于所述功率放大单元的输出端。  7. The breathing lamp apparatus according to claim 3, wherein an input end of the driving unit is connected to an output end of the power amplifying unit.
PCT/CN2009/074321 2008-10-09 2009-09-29 Lamp apparatus capable of controlling brightness according to audio signal WO2010040316A1 (en)

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CN201265786Y (en) * 2008-10-09 2009-07-01 深圳华为通信技术有限公司 Respiration lamp apparatus
CN112188708B (en) * 2020-09-29 2023-05-12 恩平市威力斯电子科技有限公司 Music accompaniment method and device based on mobile terminal and terminal equipment

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CN1466406A (en) * 2002-06-26 2004-01-07 王肇朗 Electronic device capable of adjusting lamp brightness and flash according to audio signal amplitule
CN1596050A (en) * 2003-09-11 2005-03-16 银河光电股份有限公司 Light emitting source apparatus
CN201265786Y (en) * 2008-10-09 2009-07-01 深圳华为通信技术有限公司 Respiration lamp apparatus

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
CN1466406A (en) * 2002-06-26 2004-01-07 王肇朗 Electronic device capable of adjusting lamp brightness and flash according to audio signal amplitule
CN1596050A (en) * 2003-09-11 2005-03-16 银河光电股份有限公司 Light emitting source apparatus
CN201265786Y (en) * 2008-10-09 2009-07-01 深圳华为通信技术有限公司 Respiration lamp apparatus

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