专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

91. 发明授权

EP3103193B1 SYSTEMS AND METHODS FOR CONTROLLING COMMON MODE VOLTAGE OF MULTI-MODE POWER CONVERTER 有权
公开(公告)号：EP3103193B1
公开(公告)日：2019-08-07
申请号：EP15705754.8
申请日：2015-02-03
申请人： Cirrus Logic, Inc.
发明人： KING, Eric J. , MELANSON, John L.
IPC分类号： H03F3/217 , H03F3/181 , H03F1/02 , H02M3/158

92. 发明公开

EP3477855A1 SENSOR ARRANGEMENT 有权转让
公开(公告)号：EP3477855A1
公开(公告)日：2019-05-01
申请号：EP17198335.6
申请日：2017-10-25
申请人： ams International AG
发明人： Steiner, Matthias , Fröhlich, Thomas
IPC分类号： H03F1/34 , H03F3/181 , H03F3/45 , H03F3/70 , H03M3/00 , H03M1/78
摘要： A sensor arrangement comprises a sensor (1) having a first terminal (3) and a second terminal (5), and an amplifier (9) having an amplifier input (11) for applying an input signal and an amplifier output (13) for providing an amplified input signal, the amplifier input (11) being coupled to the second terminal (5). The sensor arrangement further comprises a quantizer (25) having a quantizer input and a quantizer output being suitable for providing a multi-level output signal on the basis of the amplified input signal and a feedback circuit having a feedback circuit input coupled to the quantizer output and a feedback circuit output (HVBIAS) coupled to the first terminal (3). The feedback circuit comprises an digital-to-analog converter (27, 29) being suitable for generating an analog signal on the basis of the multi-level output signal, the analog signal being the basis of a feedback signal provided at the feedback circuit output (HVBIAS). The feedback circuit further comprises a feedback capacitor (31) that is coupled between the feedback circuit output (HVBIAS) and an output of the digital-to-analog converter (27, 29), and a voltage source (35) coupled to the feedback circuit output (HVBIAS).

93. 发明公开

EP3477853A1 BOOST CONTROL SIGNAL GENERATOR 有权
公开(公告)号：EP3477853A1
公开(公告)日：2019-05-01
申请号：EP17306505.3
申请日：2017-10-31
申请人： NXP B.V.
发明人： Van Dommelen, Maarten , Chalet, Frédéric , Krabbenborg, Benno
IPC分类号： H03F1/02 , H03F3/181
摘要： A method and a generator (300) for generating a boost control signal (dcdc_envelope) for a DC-DC-booster is described. An audio signal (audio@1fs) may be received comprising a plurality of audio sample values. The audio signal (audio@1fs) may be delayed for a delay time. A maximum-delayed-value of the audio sample values during the delay time may be determined. The boost control signal (dcdc_envelope) may be generated from the maximum of the non-delayed audio signal sample value and the maximum-delayed-value.

94. 发明公开

EP3408936A2 MULTI-CHANNEL AMPLIFIER WITH CONTINUOUS CLASS-D MODULATOR AND EMBEDDED PLD AND RESONANT FREQUENCY DETECTOR 审中-实审
公开(公告)号：EP3408936A2
公开(公告)日：2018-12-05
申请号：EP17703640.7
申请日：2017-01-27
申请人： Dolby Laboratories Licensing Corporation
发明人： VOGEL, Erich H , BUTLER, JOEL A. , REVELLI, Luca
IPC分类号： H03F3/217 , H04S7/00 , H04R5/00 , H04R29/00 , H03G3/30 , H03G3/00 , H03F3/68 , H04R5/04 , H02M1/32 , H02M1/42 , H05B37/02 , H02M1/00 , H03F3/181
CPC分类号： H04R5/04 , H02M1/32 , H02M1/4225 , H02M1/4241 , H02M2001/007 , H02M2001/325 , H03F1/301 , H03F3/183 , H03F3/2173 , H03F3/45475 , H03F3/68 , H03F2200/03 , H03F2200/447 , H03F2200/468 , H03F2203/45512 , H03F2203/45522 , H03F2203/45528 , H03G3/007 , H03G3/3005 , H03G2201/208 , H03G2201/708 , H04R29/007 , H04R2420/05 , H04R2430/01 , H04S7/308 , H05B37/029
摘要： An integrated cinema amplifier a power supply stage that distributes power over a plurality of channels for rendering immersive audio content in a surround sound listening environment. The amplifier automatically detects maximum and net power availability and requirements based on audio content by decoding audio metadata and dynamically adjusts gains to each channel or sets of channels based on content and operational/environmental conditions. A power supply stage provides power to drive a plurality of channels corresponding to speaker feeds to a plurality of speakers. The amplifier has a front panel having an LED array with each LED associated with a respective channel or group of channels of the multi-channel amplifier, and a control unit configured to light the LEDs according to display patterns based on operating status or error conditions of the amplifier.

95. 发明公开

EP3297158A2 AMPLIFIER 审中-公开
标题翻译：放大器
公开(公告)号：EP3297158A2
公开(公告)日：2018-03-21
申请号：EP17185179.3
申请日：2017-08-07
申请人： Onkyo Corporation
发明人： TAKAHAMA, Koji , KATO, Tsukasa
IPC分类号： H03F1/52 , H03F3/181 , H03F3/217
CPC分类号： H03F1/30 , H03F1/52 , H03F3/181 , H03F3/217 , H03F2200/03 , H03F2200/321 , H03F2200/351 , H03F2200/447 , H03F2200/462
摘要： Problem:
To prevent temperature rise of an amplifier.
Solution:
An AV amplifier 1 that amplifies an audio signal includes a PWM modulator 5 that controls dynamic range of the audio signal to not more than a setting value, and a microcomputer 2 sets the setting value based on consumption current. The microcomputer 2 sets the setting value to a predetermined value (-35 dB) in case that state that consumption current is not less than a predetermined threshold (4.9 A or 3.6 A) continues for a predetermined time (2 minutes or 7.5 minutes).
摘要翻译：问题：防止放大器温度升高。解决方案：放大音频信号的AV放大器1包括PWM调制器5，其将音频信号的动态范围控制为不大于设定值，并且微型计算机2基于消耗电流设置设置值。在消耗电流不小于预定阈值（4.9A或3.6A）的状态持续预定时间（2分钟或7.5分钟）的情况下，微型计算机2将设定值设定为预定值（-35dB）。

96. 发明授权

EP3047571B1 SYSTEMS AND METHODS FOR DETECTION OF LOAD IMPEDANCE OF A TRANSDUCER DEVICE COUPLED TO AN AUDIO DEVICE 有权
标题翻译：用于检测耦合到音频设备的传感器设备的负载阻抗的系统和方法
公开(公告)号：EP3047571B1
公开(公告)日：2018-01-17
申请号：EP14777232.1
申请日：2014-09-15
申请人： Cirrus Logic, Inc.
发明人： ILANGO, Anand , ALLEN, Daniel John , JINDAL, Vivek , SATOSKAR, Aniruddha , THANDRI, Bharath Kumar
IPC分类号： H03F1/02 , G01R31/28 , H03F1/52 , H03F3/181 , H03F3/183 , H04R3/00
CPC分类号： H04R3/007 , G10K11/17854 , G10K11/17881 , G10K11/17885 , G10K2210/1081 , G10K2210/30232 , G10K2210/3045 , G10K2210/3049 , H03F1/0211 , H03F1/0227 , H03F1/52 , H03F3/181 , H03F3/183 , H03F3/185 , H03F3/52 , H03F2200/03 , H03F2200/462 , H03F2200/471 , H04R5/04 , H04R29/001 , H04R2420/05
摘要： In accordance with systems and methods of the present disclosure, an audio device may include an electrical terminal, an audio circuit, and a transducer load detection circuit. The electrical terminal may couple a transducer device to the audio device. The audio circuit may generate an analog audio signal, wherein the analog audio signal is coupled to the electrical terminal. The transducer load detection circuit may detect a load impedance of the transducer device when the transducer device is coupled to the audio device from characteristics measured at the electrical terminal.

97. 发明授权

EP2432120B1 AMPLIFYING DEVICE 有权
标题翻译：放大器件
公开(公告)号：EP2432120B1
公开(公告)日：2017-12-06
申请号：EP11731756.0
申请日：2011-01-05
申请人： Panasonic Intellectual Property Management Co., Ltd.
发明人： SUKEGAWA, Rintaro , OZAKI, Seigo
IPC分类号： H03F1/32 , H03F1/02 , H03F3/181 , H03F3/217
CPC分类号： H03F1/0222 , H03F1/3205 , H03F3/185 , H03F3/2173 , H03F2200/03 , H03F2200/102 , H03F2200/351 , H03F2200/504
摘要： A supply voltage controller 11 includes a simplified envelope creating unit 111 that calculates an envelope of an input audio signal according to an input audio signal from an external device, creates a supply voltage control signal so that a waveform of the supply voltage control signal follows a waveform of the envelope, and outputs the supply voltage control signal to a voltage variable power supply 12 a constant time before the input audio signal is amplified by the amplifier 14. Accordingly, an amplifying device can be provided which can reduce the distortion of the output signal not depending on a change in the slew rate of the voltage variable power supply 12 and suppress the deterioration of power efficiency.

98. 发明公开

EP3223427A1 BTL OUTPUT SELF-OSCILLATING CLASS D AMPLIFIER 审中-公开
标题翻译： BTL输出自振荡D类放大器
公开(公告)号：EP3223427A1
公开(公告)日：2017-09-27
申请号：EP17162759.9
申请日：2017-03-24
申请人： YAMAHA CORPORATION
发明人： Togawa, Takeshi , Noro, Masao
IPC分类号： H03F3/217 , H03F1/32 , H03F3/181
CPC分类号： H03F3/2173 , H03F1/32 , H03F3/181 , H03F3/185 , H03F3/217 , H03F3/2171 , H03F2200/03 , H03F2200/171 , H03F2200/351 , H03F2200/78
摘要： A Bridge-Tied Load output self-oscillating class D amplifier includes a comparator receives an input signal from a signal input circuit at a second input terminal and outputs a positive-phase pulse width modulation signal and a reverse-phase pulse width modulation signal by comparing voltages of the two input terminal, first and second switching circuits power-amplifies the reverse-phase pulse width modulation signal and the positive-phase pulse width modulation signal, a first low-pass filter extracts a first output signal from the reverse-phase pulse width modulation signal, a second low-pass filter extracts a second output signal from the positive-phase pulse width modulation signal, a subtractor calculates a difference between the first and second output signals and output a difference signal, and a first feedback circuit feeds back the difference signal to the second input terminal of the comparator.
摘要翻译：桥接式负载输出自激振荡D类放大器包括比较器，其接收来自第二输入端子处的信号输入电路的输入信号，并通过比较来输出正相脉宽调制信号和反相脉宽调制信号两个输入端的电压，第一和第二开关电路对反相脉宽调制信号和正相脉宽调制信号进行功率放大，第一低通滤波器从反相脉冲中提取第一输出信号第二低通滤波器从正相脉宽调制信号中提取第二输出信号，减法器计算第一和第二输出信号之间的差值并输出差值信号，第一反馈电路反馈差分信号送至比较器的第二输入端。

99. 发明公开

EP3200345A1 AMPLIFIER CIRCUIT FOR AMPLIFYING AN OUTPUT SIGNAL OF A CAPACITIVE SENSOR 有权转让
标题翻译：放大器电路用于放大电容式传感器的输出信号
公开(公告)号：EP3200345A1
公开(公告)日：2017-08-02
申请号：EP16152957.3
申请日：2016-01-27
申请人： ams AG
发明人： Perktold, Lukas , Niederberger, Mark , Blattmann, René
IPC分类号： H03F1/30 , H03F1/34 , H03F1/42 , H03F3/181 , H04R3/00
CPC分类号： H03F1/301 , H03F1/342 , H03F1/42 , H03F3/181 , H03F2200/03 , H03F2200/126 , H03F2200/129 , H03F2200/144 , H03F2200/36 , H03F2200/42 , H03F2200/471 , H04R3/00 , H04R19/04
摘要： An amplifier circuit (AC) for amplifying an output signal (OS) of a capacitive sensor (M) comprises a first input terminal (AIN) to receive the output signal (OS) of the capacitive sensor (M) and a second input terminal (BIN) to receive a bias voltage (Vbias) of the capacitive sensor (M). The amplifier circuit (AC) comprises an amplifier (A) for amplifying the output signal (OS) and a control circuit (CF) arranged in a feedback loop (FL) of the amplifier (A) being configured to control a DC voltage level at an input connection (A1) of the amplifier (A). A bias voltage sensing circuit (BVS) senses a change of the level of the bias voltage (Vbias) at the second input terminal (BIN) and changes the bandwidth of the feedback loop (FL) in dependence on the sensed change of the level of the bias voltage (Vbias).
摘要翻译：用于放大电容式传感器（M）的输出信号（OS）的放大器电路（AC）包括：第一输入端子（AIN），用于接收电容式传感器（M）的输出信号（OS）;以及第二输入端子 BIN）以接收电容式传感器（M）的偏置电压（Vbias）。放大器电路（AC）包括用于放大输出信号（OS）的放大器（A）和布置在放大器（A）的反馈回路（FL）中的控制电路（CF），该控制电路被配置为将DC电压电平控制在放大器（A）的输入连接（A1）。偏置电压感测电路（BVS）感测第二输入端子（BIN）处的偏置电压（Vbias）的电平的变化，并且根据所感测的电平的变化来改变反馈回路（FL）的带宽偏置电压（Vbias）。

100. 发明公开

EP3110004A4 AUDIO SIGNAL AMPLIFICATION APPARATUS 有权
标题翻译： TONSIGNALVERSTÄRKUNGSVORRICHTUNG
公开(公告)号：EP3110004A4
公开(公告)日：2017-03-01
申请号：EP14883059
申请日：2014-11-26
申请人： PANASONIC IP MAN CO LTD
发明人： IWATA KAZUYA
IPC分类号： H03F3/217 , G10L21/0208 , H03F1/32 , H03F1/34 , H03F3/181 , H03F3/183 , H04R3/04
CPC分类号： H04R3/04 , G10L21/0208 , H03F1/34 , H03F3/183 , H03F3/217 , H03F3/2171 , H03F3/2173 , H03F3/2175 , H03F2200/03 , H03F2200/171 , H03F2200/331 , H03F2200/351 , H03F2200/432
摘要： An audio signal amplification device of the disclosure includes: a delta-sigma modulation part configured to resample an input digital audio signal with a quantization number smaller than a quantization number of the digital audio signal; a pulse-width modulation part configured to convert an output signal from the delta-sigma modulation part into a pulse-width modulation signal which sets a gradation of the output signal in an amplitude direction at a gradation of a pulse width; a power amplification part configured to perform power amplification on an output signal from the pulse-width modulation part; a low-pass filter configured to diminish a component higher than a predetermined cutoff frequency, in an output signal from the power amplification part, and to output the resultant signal; and a correction processing part configured to generate a correction signal for correcting the digital audio signal. The correction processing part includes a switch configured to control coupling of the correction processing part to the low-pass filter. When the switch is on, the correction processing part couples a loudspeaker to the low-pass filter, and generates the correction signal.
摘要翻译：本发明的音频信号放大设备包括：三角积分调制部分，被配置为以比数字音频信号的量化数小的量化数重采样输入的数字音频信号; 脉冲宽度调制部分，其被配置为将来自所述德耳塔西格玛调制部分的输出信号转换成脉冲宽度调制信号，所述脉冲宽度调制信号将所述输出信号的灰度在幅度方向上设置为脉冲宽度的灰度; 功率放大部件，被配置为对来自所述脉冲宽度调制部件的输出信号执行功率放大; 低通滤波器，其被配置为在来自所述功率放大部件的输出信号中减小高于预定截止频率的分量，并且输出结果信号; 以及校正处理部分，被配置为生成用于校正数字音频信号的校正信号。校正处理部分包括被配置为控制校正处理部分与低通滤波器的耦合的开关。当开关接通时，校正处理部分将扬声器耦合到低通滤波器，并产生校正信号。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式