CN101090258A - Adapter power amplifier - Google Patents

Adapter power amplifier Download PDF

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Publication number
CN101090258A
CN101090258A CN 200610087204 CN200610087204A CN101090258A CN 101090258 A CN101090258 A CN 101090258A CN 200610087204 CN200610087204 CN 200610087204 CN 200610087204 A CN200610087204 A CN 200610087204A CN 101090258 A CN101090258 A CN 101090258A
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CN
China
Prior art keywords
power amplifier
signal
adaptive power
output signal
magnification
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CN 200610087204
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Chinese (zh)
Inventor
陈新
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北京锐科天智科技有限责任公司
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Priority to CN 200610087204 priority Critical patent/CN101090258A/en
Publication of CN101090258A publication Critical patent/CN101090258A/en

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Abstract

This invention discloses an adaptive power amplifier, the amplification multiple of which is adjusted automatically and is decided according to the difference between the internal sample value of an input signal or the outer sample value of an output signal and the limit value of the output signal set currently, and the limit value of the output signal is controlled by increasing or reducing outside circuits and parameters set by the adaptive power amplifier also includes the smallest and the largest output amplitudes of a signal, retarding space and time interval of the regulation of amplified times. When a signal is input, the amplifier can regulate power according to the input signal sample value and the limit value of an output signal set currently, when it is shielded, it stores the current amplified multiple parameter and maintains the current one till it starts up again.

Description

自适应功率放大器 Adaptive Power Amplifier

技术领域 FIELD

本发明涉及一种放大倍数自动可调的功率放大器。 The present invention relates to an automatically adjustable amplifier magnification.

背景技术 Background technique

普通的功率放大器,一旦设定好,放大倍数不变,但对于不同信号源,输入信号大小不同,在切换时就会遇到需要不断调整功率的麻烦,如电视机切换频道,卡拉OK的节目音量以及话筒与音乐的配合关系,另外打开电源的瞬间功率放大器容易产生冲击信号对输出单元造成损坏。 Common power amplifier, once set, the magnification change, but for different sources, different input signal magnitude when switching will encounter problems need to constantly adjust the power, such as a television channel is switched, the karaoke program OK volume, and the microphone and music mating relationship, the power amplifier further opening instant prone to impact damage signal output unit.

发明内容 SUMMARY

本发明解决了传统功率放大器没有自动调整功能和保护输出单元的缺点,提供了一种自适应功率放大器,采用一体化芯片设计,是放大倍数自动可调的功率放大器,放大倍数的调整根据输入信号的内部采样值或输出信号的外部采样值,与当前设定的输出信号限幅值之间的差决定。 The present invention solves the conventional power amplifier without automatic adjustment output unit and disadvantages of the protection, there is provided an adaptive power amplifier with integrated chip design, the magnification is automatically adjustable power amplifier, amplifies the input signal to adjust multiple internal or external sample value of the sampling values ​​of the output signal, determines a difference between the output signal and the limit value currently set. 所述自适应功率放大器的输出信号限幅值由外部电路进行增加或减小控制(典型的如由接收到的遥控器音量调整信号控制)。 The adaptive power amplifier for increasing the amplitude of the output signal of the limiter or reduction control from an external circuit (typically as the adjustment signal received from the remote volume control).

所述的自适应功率放大器,其特征在于,有非易失存储器,能够保存当前设定的输出信号限幅值。 The adaptive power amplifier, characterized in that, with a nonvolatile memory, can store the output signal of the current limit value set.

所述的自适应功率放大器,其特征在于,所述自适应功率放大器本身可设定的参数还包括信号最小输出幅度、信号最大输出幅度、放大倍数调整迟滞空间、放大倍数调整时间间隔。 The adaptive power amplifier, wherein the adaptive power amplifier itself can set the parameters further include the minimum output signal amplitude, the maximum output signal amplitude, spatial hysteresis adjustment magnification, magnification adjustment time intervals.

其中放大倍数调整迟滞空间表示信号采样值与当前设定的输出信号限幅值之间的差在某个区间内时,自适应功率放大器不做调整。 Wherein the magnification adjusting the hysteresis represents the difference between the space signal sample value and the output signal of the current limit value is set at a certain interval, no adjustment adaptive power amplifier. 一方面避免干扰造成的不必要调整,另一方面避免频繁调整,保持稳定。 On the one hand to avoid unnecessary interference caused by the adjustment, on the other hand to avoid frequent adjustments to maintain stability.

放大倍数调整时间间隔实际为采集信号的采样时间间隔,即连续采样几次采集信号后,等到设定的放大倍数调整时间间隔后再继续采样。 Magnification adjust the interval to collect actual signal sampling time interval, i.e. after several successive sampling signal acquisition, until the set magnification adjusting sampling time interval before continuing.

所述的自适应功率放大器,其特征在于,所述自适应功率放大器放大倍数为1表示不做任何调整,当自适应功率放大器使能端有使能信号时,自适应功率放大器根据输入信号采样值与当前设定的输出信号限幅值进行功率调整,当屏蔽自适应功率放大器时,自适应功率放大器存储当前放大倍数参数并维持现有的放大倍数直至自适应功率放大器重新使能。 The adaptive power amplifier, wherein the adaptive power amplifier represents a magnification of 1 without any adjustment, the adaptive power amplifier when the enable signal has the enable adaptive power amplifier according to the input signal samples power adjusting value with the output signal of the current limit value is set, when the shield adaptive power amplifier, the adaptive power amplifier parameters stored in the current magnification and magnification up to maintain the current adaptive power amplifier is enabled again.

所述的自适应功率放大器,其特征在于,一体化芯片包含多路通道的功率自动调整功能,各通道可以单独调整,也可以依据某一通道的调整值进行联动调整。 The adaptive power amplifier, wherein the integrated chip comprising a plurality of power channels automatic adjustment function, each channel can be individually adjusted, linkage can also be adjusted according to the adjustment value for a channel. 各通道可使用同一个使能端或独立的使能端进行放大倍数调整功能的使能或屏蔽。 Each channel can use the same or a separate enable terminal for an enable terminal of the magnification adjustment function is enabled or masked.

所述的自适应功率放大器,其特征在于,能够连接探头接收红外遥控器或无线遥控器发出的功率调整信号进行输出信号限幅值设定与存储,同时能够把遥控器发出的其余信号解调出来传送给其它电路,还能够通过简单的外接元件实现广播电台接收并进行自动功率放大。 The adaptive power amplifier, characterized in that the probe can be connected to receive the infrared remote control or wireless remote control adjusts the signal power emit an output signal with the set limit value storage, while being able to demodulate the remaining signal from the remote controller it is transmitted to other circuitry, radio reception and also enables automatic power amplification by a simple external device.

所述的自适应功率放大器,其特征在于,能够驱动显示屏进行信号显示。 The adaptive power amplifier, wherein the display drive signal for displaying is possible.

所述的自适应功率放大器,其特征在于,含有实时时钟电路,能够提供时间信息获取功能和一定的数据存储。 The adaptive power amplifier, characterized in that the circuit comprises a real time clock, the time information acquisition function can be provided and some data storage.

所述的自适应功率放大器,其特征在于,输出有淡入淡出功能,上电开启时,输出信号从幅度为零逐渐上升到正常放大输出值;当调整放大倍数时,输出信号从幅度为当前值逐渐变化到调整值;休眠时输出信号从幅度为当前值零逐渐下降到零后进入休眠。 The adaptive power amplifier, wherein the output has a fade function, when the power is turned on, the output signal rises gradually from zero amplitude to a normal amplifying an output value; when the magnification adjustment, an output signal from the amplitude value of the current is gradually changed to the adjustment value; when the output signal from the sleep current amplitude value zero gradually decreased to the zero back into hibernation.

所述的自适应功率放大器,其特征在于,内部有D/A数模转换功能,能够对输入的数字信号进行采样、模拟转换和放大输出,并根据输入信号的内部采样值与当前设定的输出信号限幅值自动调整放大倍数。 The adaptive power amplifier, characterized in that the internal D / A digital-analog conversion, can be sampled digital signal input, and converts the analog amplified output, and sets the internal current sample value of the input signal automatically adjusting the output signal limit value magnification.

附图说明 BRIEF DESCRIPTION

具体实施方式 Detailed ways

实施例1(智能功放)本发明提供了一种智能功放,使用所述自适应功率放大器,能够自动调整输出功率保持输出音量恒定,还能够自动调整话筒的音量放大倍数、回声调整倍数、颤音调整倍数等,实现无论连接什么话筒都能实现一样的效果。 Example 1 (Intelligent Power amplifier) ​​embodiment of the present invention provides an intelligent power amplifier, using the adaptive power amplifier, the output power is automatically adjusted to maintain a constant output volume, the volume is also possible to automatically adjust the magnification of the microphone, an echo multiple adjustment, the adjustment tremolo multiples, etc., to achieve no matter what microphone connection can achieve the same effect. 还可以接收广播电台信号进行播放。 Radio can also receive signals for playback. 另外含有外部采样单元,当调整音箱的位置时,外部采样单元采集的信号发生变化,所述智能功放通过自适应功率放大器提供的自动放大功能进行调整,使得移动音箱位置造成的影响能够通过智能功放得到一定的补偿。 Further sampling unit containing external influence, when adjusting the position of the speaker, the external signal sampling unit is changed, the intelligent automatic amplifier amplifying function provided by the adaptive power amplifier is adjusted so that the movement can be caused by the position of the speaker amplifier intelligence get some compensation. 所以通过驱动音箱底座的电机,智能功放也能够通过检测外部信号采样值决定可转动或可移动音箱相对于采样点的最佳角度或位置。 Therefore, by driving the motor mount speakers, amplifiers intelligent decision can be rotatable or movable with respect to the speaker optimal sampling point by detecting the angle or position of the external signal samples.

Claims (10)

1.一种自适应功率放大器,采用一体化芯片设计,是放大倍数自动可调的功率放大器,放大倍数的调整根据输入信号的内部采样值或输出信号的外部采样值,与当前设定的输出信号限幅值之间的差决定。 An adaptive power amplifier with integrated chip design, the magnification is automatically adjustable amplifier, the amplification adjustment multiple sample values ​​according to an external or internal sample value of the output signal of the input signal, the output current set the difference between the decision to limit the signal amplitude. 所述自适应功率放大器的输出信号限幅值由外部电路进行增加或减小控制(典型的如由接收到的遥控器音量调整信号控制)。 The adaptive power amplifier for increasing the amplitude of the output signal of the limiter or reduction control from an external circuit (typically as the adjustment signal received from the remote volume control).
2.根据权利要求1中所述的自适应功率放大器,其特征在于,有非易失存储器,能够保存当前设定的输出信号限幅值。 2. The adaptive power amplifier according to claim 1, characterized in that, with a nonvolatile memory, can store the output signal of the current limit value set.
3.根据权利要求2中所述的自适应功率放大器,其特征在于,所述自适应功率放大器本身可设定的参数还包括信号最小输出幅度、信号最大输出幅度、放大倍数调整迟滞空间、放大倍数调整时间间隔。 3. The adaptive power amplifier according to claim 2, wherein the adaptive power amplifier itself can set the parameters further include the minimum output signal amplitude, the maximum output signal amplitude, the hysteresis space magnification adjustment, zoom multiple interval adjustment. 其中放大倍数调整迟滞空间表示信号采样值与当前设定的输出信号限幅值之间的差在某个区间内时,自适应功率放大器不做调整。 Wherein the magnification adjusting the hysteresis represents the difference between the space signal sample value and the output signal of the current limit value is set at a certain interval, no adjustment adaptive power amplifier. 一方面避免干扰造成的不必要调整,另一方面避免频繁调整,保持稳定。 On the one hand to avoid unnecessary interference caused by the adjustment, on the other hand to avoid frequent adjustments to maintain stability. 放大倍数调整时间间隔实际为采集信号的采样时间间隔,即连续采样几次采集信号后,等到设定的放大倍数调整时间间隔后再继续采样。 Magnification adjust the interval to collect actual signal sampling time interval, i.e. after several successive sampling signal acquisition, until the set magnification adjusting sampling time interval before continuing.
4.根据权利要求1中所述的自适应功率放大器,其特征在于,所述自适应功率放大器放大倍数为1表示不做任何调整,当自适应功率放大器使能端有使能信号时,自适应功率放大器根据输入信号采样值与当前设定的输出信号限幅值进行功率调整,当屏蔽自适应功率放大器时,自适应功率放大器存储当前放大倍数参数并维持现有的放大倍数直至自适应功率放大器重新使能。 4. The adaptive power amplifier according to claim 1, wherein the adaptive power amplifier represents a magnification of 1 without any adjustment, when the enable terminal of the adaptive amplifier enable signal have, from power amplifier adapted to adjust the output signal of the power current limit value set in accordance with the input signal samples, when the shield adaptive power amplifier, the adaptive power amplifier parameters stored in the current magnification and magnification up to maintain the current adaptive power amplifier re-enabled.
5.根据权利要求1中所述的自适应功率放大器,其特征在于,一体化芯片包含多路通道的功率自动调整功能,各通道可以单独调整,也可以依据某一通道的调整值进行联动调整。 The adaptive power amplifier according to claim 1, wherein the power integrated chip comprising a plurality of channels automatic adjustment function, each channel can be individually adjusted, linkage can also be adjusted according to the adjustment value of a channel . 各通道可使用同一个使能端或独立的使能端进行放大倍数调整功能的使能或屏蔽。 Each channel can use the same or a separate enable terminal for an enable terminal of the magnification adjustment function is enabled or masked.
6.根据权利要求1中所述的自适应功率放大器,其特征在于,能够连接探头接收红外遥控器或无线遥控器发出的功率调整信号进行输出信号限幅值设定与存储,同时能够把遥控器发出的其余信号解调出来传送给其它电路,还能够通过简单的外接元件实现广播电台接收并进行自动功率放大。 6. The adaptive power amplifier according to claim 1, characterized in that the probe can be connected to receive the infrared remote control or wireless remote control adjusts the signal power emitted by the output signal of the limit value set and stored, while the remote control can be remaining signals sent out demodulator transmitted to other circuitry, radio reception and also enables automatic power amplification by a simple external device.
7.根据权利要求1中所述的自适应功率放大器,其特征在于,能够驱动显示屏进行信号显示。 7. The adaptive power amplifier according to claim 1, wherein the display drive signal for displaying is possible.
8.根据权利要求1中所述的自适应功率放大器,其特征在于,含有实时时钟电路,能够提供时间信息获取功能和一定的数据存储。 8. The adaptive power amplifier according to claim 1, characterized in that the circuit comprises a real time clock, the time information acquisition function can be provided and some data storage.
9.根据权利要求1中所述的自适应功率放大器,其特征在于,输出有淡入淡出功能,上电开启时,输出信号从幅度为零逐渐上升到正常放大输出值;当调整放大倍数时,输出信号从幅度为当前值逐渐变化到调整值;休眠时输出信号从幅度为当前值零逐渐下降到零后进入休眠。 9. The adaptive power amplifier according to claim 1, characterized in that the output function have a fade, when the power is turned on, the output signal rises gradually from zero amplitude to a normal value of the amplified output; when adjusting the magnification, the output signal from the amplitude value of the current gradually changes to the adjustment value; when the output signal from the sleep after the current amplitude value zero gradually decreased to zero going to sleep.
10.根据权利要求1至9中任一所述的自适应功率放大器,其特征在于,内部有D/A数模转换功能,能够对输入的数字信号进行采样、模拟转换和放大输出,并根据输入信号的内部采样值与当前设定的输出信号限幅值自动调整放大倍数。 10. The adaptive power amplifier according to claim 1 in any one of to 9, characterized in that the internal D / A digital-analog conversion, can be sampled digital signal input, and converts the analog amplified output, and in accordance with internal sample values ​​of the input signal and the output signal of the current limit value is set automatically adjust the magnification.
CN 200610087204 2006-06-13 2006-06-13 Adapter power amplifier CN101090258A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101854084B (en) 2009-03-30 2012-09-05 联发科技股份有限公司 Power circuits, communication systems and power supply methods
CN101662823B (en) 2008-08-29 2013-01-30 瑞萨电子株式会社 Semiconductor integrated circuit and circuit operation method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101662823B (en) 2008-08-29 2013-01-30 瑞萨电子株式会社 Semiconductor integrated circuit and circuit operation method
CN101854084B (en) 2009-03-30 2012-09-05 联发科技股份有限公司 Power circuits, communication systems and power supply methods

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