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1. 发明公开

EP3312991A1 SYSTEM AND METHOD OF REDUCING POWER CONSUMPTION FOR AUDIO PLAYBACK 审中-公开
标题翻译：降低音频播放功率消耗的系统和方法
公开(公告)号：EP3312991A1
公开(公告)日：2018-04-25
申请号：EP17205925.5
申请日：2009-03-03
申请人： QUALCOMM Incorporated
发明人： BAZARJANI, Seyfollah , MIAO, Guoqing , FITZGERALD, Joseph, R. , KULKARNI, Prajakt, V. , GAGNE, Justin, Joseph Rosen , MCALLISTER, Gene, H. , HINRICHS, Jeffrey , VAN DER WAGT,, Jan, Paul
IPC分类号： H03F1/02 , H03G7/00 , H03G3/30 , H03G3/32
CPC分类号： H03F1/0222 , H03F1/0211 , H03F2200/03 , H03G3/30 , H03G3/3005 , H03G3/32
摘要： A system and method of improving the efficiency in the power consumption of an audio system. In essence, the technique is to adjust the power delivered from the power supply to the analog section, such as the power amplifier, in response to the volume level indicated by the volume control module and/or in response to the detected characteristic of the input audio signal. Thus, in this manner, the analog section is operated in a manner that is related to the level of the signal it is processing. Additionally, the system and method also relate to a technique of adjusting the dynamic ranges of the digital signal and the analog signal to improve the overall dynamic range of the system without needing to consume additional power.
摘要翻译：提高音频系统功耗效率的系统和方法。本质上，该技术是响应于由音量控制模块指示的音量水平和/或响应于所检测到的输入特性而调整从电源传送到诸如功率放大器的模拟部分的功率音频信号。因此，以这种方式，模拟部分以与其正在处理的信号的电平有关的方式进行操作。此外，该系统和方法还涉及调整数字信号和模拟信号的动态范围以提高系统的整体动态范围而不需要消耗额外功率的技术。

2. 发明授权

EP1380114B1 HYBRID MULTI-STAGE CIRCUIT UTILIZING DIFFERENT TYPES OF SAMPLING CIRCUIT 有权
标题翻译：与多种采样电路的混合多级电路
公开(公告)号：EP1380114B1
公开(公告)日：2010-04-28
申请号：EP02702127.8
申请日：2002-01-30
申请人： QUALCOMM INCORPORATED
发明人： BAZARJANI, Seyfollah
IPC分类号： H03M3/02 , H03H17/06
CPC分类号： H03M3/496 , H03M3/34 , H03M3/342 , H03M3/384

3. 发明授权

EP2171840B1 AMPLIFIER WITH CONFIGURABLE DC-COUPLED OR AC-COUPLED OUTPUT 有权
标题翻译：具有可配置直流耦合或交流耦合输出的放大器
公开(公告)号：EP2171840B1
公开(公告)日：2016-04-13
申请号：EP08771847.4
申请日：2008-06-24
申请人： QUALCOMM Incorporated
发明人： CHILAKAPATI, Uma , PULINCHERRY, Anurag , BAZARJANI, Seyfollah
IPC分类号： H03F3/30 , H03F3/45 , H03F3/68 , H03F3/20
CPC分类号： H03F3/20 , H03F3/3022 , H03F3/45192 , H03F3/45475 , H03F3/68 , H03F2200/03 , H03F2203/45101

4. 发明公开

EP2269301A2 SYSTEM AND METHOD OF REDUCING POWER CONSUMPTION FOR AUDIO PLAYBACK 失效
标题翻译：系统和方法以减少电力使用音频播放
公开(公告)号：EP2269301A2
公开(公告)日：2011-01-05
申请号：EP09716435.4
申请日：2009-03-03
申请人： QUALCOMM Incorporated
发明人： BAZARJANI, Seyfollah , MIAO, Guoqing , FITZGERALD, Joseph, R. , KULKARNI, Prajakt, V. , GAGNE, Justin, Joseph Rosen , MCALLISTER, Gene, H. , HINRICHS, Jeffrey , VAN DER WAGT, Jan, Paul
IPC分类号： H03F1/02 , H03G7/00
摘要： A system and method of improving the efficiency in the power consumption of an audio system. In essence, the technique is to adjust the power delivered from the power supply to the analog section, such as the power amplifier, in response to the volume level indicated by the volume control module and/or in response to the detected characteristic of the input audio signal. Thus, in this manner, the analog section is operated in a manner that is related to the level of the signal it is processing. Additionally, the system and method also relate to a technique of adjusting the dynamic ranges of the digital signal and the analog signal to improve the overall dynamic range of the system without needing to consume additional power.

5. 发明公开

EP1407491A2 MIXED ANALOG AND DIGITAL INTEGRATED CIRCUITS 审中-公开
标题翻译：模拟 - 数字集成电路
公开(公告)号：EP1407491A2
公开(公告)日：2004-04-14
申请号：EP02704441.1
申请日：2002-02-22
申请人： QUALCOMM INCORPORATED
发明人： BAZARJANI, Seyfollah , ZHANG, Haitao , ZOU, Quizhen , JHA, Sanjay
IPC分类号： H01L25/18 , H01L25/065
CPC分类号： H01L25/0657 , G01R31/2853 , H01L23/3128 , H01L24/48 , H01L24/49 , H01L24/73 , H01L25/18 , H01L2224/05554 , H01L2224/05599 , H01L2224/06164 , H01L2224/06165 , H01L2224/32145 , H01L2224/32225 , H01L2224/45099 , H01L2224/48145 , H01L2224/48227 , H01L2224/49171 , H01L2224/49175 , H01L2224/73265 , H01L2224/85399 , H01L2225/06506 , H01L2225/0651 , H01L2225/06582 , H01L2924/00014 , H01L2924/14 , H01L2924/141 , H01L2924/143 , H01L2924/1435 , H01L2924/145 , H01L2924/15311 , H01L2924/19041 , H01L2924/00 , H01L2924/00012 , H01L2224/45015 , H01L2924/207
摘要： Techniques for fabricating analog and digital circuits on separate dies and stacking and integrating the dies within a single package to form a mixed-signal IC that provides many benefits. In one aspect, the analog and digital circuits are implemented on two separate dies using possibly different IC processes suitable for these different types of circuits. The analog and digital dies are thereafter integrated (stacked) and encapsulated within the single package. Bonding pads are provided to interconnect the dies and to connect the dies to external pins. The bonding pads maybe located and arranged in a manner to provide the required connectivity while minimizing the amount of die area required to implement the pads. In another aspect, the die-to-die connectivity may be tested in conjunction with a serial bus interface. are provided to interconnect the

6. 发明授权

EP2321898B1 ADAPTIVE BIAS CURRENT GENERATION FOR SWITCHED-CAPACITOR CIRCUITS 有权
标题翻译：自适应偏置电流产生的开关电容式电路
公开(公告)号：EP2321898B1
公开(公告)日：2015-07-01
申请号：EP09791108.5
申请日：2009-08-03
申请人： QUALCOMM Incorporated
发明人： WANG, Chuanyang , QUAN, Xiaohong , BAZARJANI, Seyfollah
IPC分类号： H03F1/30 , H03F3/00 , H03F3/195 , H03F3/45
CPC分类号： H03F1/303 , H03F3/005 , H03F3/195 , H03F3/45188 , H03F2200/357 , H03F2200/447 , H03F2200/451 , H03M3/354 , H03M3/392 , H03M3/43 , H03M3/454

7. 发明公开

EP2409401A1 DIGITAL FILTERING IN A CLASS D AMPLIFIER SYSTEM TO REDUCE NOISE FOLD OVER 有权
标题翻译：数字滤波D类放大器系统用于减少噪音折返
公开(公告)号：EP2409401A1
公开(公告)日：2012-01-25
申请号：EP10716923.7
申请日：2010-03-18
申请人： QUALCOMM Incorporated
发明人： MIAO, Guoqing , SIENKO, Matt , BAZARJANI, Seyfollah
IPC分类号： H03F3/217 , H03F1/26 , H03M3/00
CPC分类号： H03F3/217 , H03F1/26 , H03M3/504
摘要： An improved power amplifier system is provided. The power amplifier system includes a programmable digital filter and a power amplifier, each responsive to a plurality of frequency response settings and switching frequency settings, respectively. Each frequency response setting and switching frequency setting is adaptively selected by a processor device to match a bandwidth of an incoming audio signal. The processor device identifies the current bandwidth of an incoming audio signal and adaptively selects a switching rate setting and a frequency response setting based on the current bandwidth. The frequency response setting is selected so as to reduce noise fold over in the power amplifier for a corresponding bandwidth, sampling rate setting, and switching frequency setting.

8. 发明公开

EP2143200A1 METAL-OXIDE-SEMICONDUCTOR CIRCUIT DESIGNS AND METHODS FOR OPERATING SAME 审中-公开
标题翻译：金属 - 半导体电路和方法外观设计及其操作方法
公开(公告)号：EP2143200A1
公开(公告)日：2010-01-13
申请号：EP08780492.8
申请日：2008-03-27
申请人： QUALCOMM Incorporated
发明人： MIAO, Guoqing , BAZARJANI, Seyfollah
IPC分类号： H03F1/14 , H03F1/52 , H03F3/45
CPC分类号： H03F1/14 , H03F1/523 , H03F3/45183
摘要： Complimentary Metal-Oxide-Semiconductor (CMOS) circuits made with core transistors are capable of reliable operation from an IO power supply with voltage that exceeds the reliability limit of the transistors. In embodiments, biasing of an operational amplifier is changed in part to a fixed voltage corresponding to the reliability limit. In embodiments, switched capacitor networks are made with one or more amplifiers and switches including core transistors, but without exposing the core transistors to voltages in excess of their reliability limit. In embodiments, operational transconductance amplifiers (OTAs) include core transistors and operate from IO power supplies. Level shifters for shifting the levels of a power down signal may be used to avoid excessive voltage stress of the OTAs' core transistors during turn-off. Non-level shifting means may be used to clamp output voltages and selected internal voltages of the OTAs, also avoiding excessive voltage stress of the core transistors during turn-off.

9. 发明公开

EP1782656A1 INTEGRATED AUDIO CODEC WITH SILICON AUDIO TRANSDUCER 审中-公开
标题翻译：集成音频CODEC硅音频转换器
公开(公告)号：EP1782656A1
公开(公告)日：2007-05-09
申请号：EP05782455.9
申请日：2005-08-03
申请人： Qualcomm Incorporated
发明人： BAZARJANI, Seyfollah , OLIVEIRA, Louis D.
IPC分类号： H04R19/00
CPC分类号： H04R19/005 , H01L2224/48091 , H01L2224/48137 , H01L2224/48145 , H01L2924/10253 , H01L2924/1461 , H01L2924/00014 , H01L2924/00 , H01L2924/00012
摘要： An integrated audio transducer with associated signal processing electronics is disclosed. A silicon audio transducer, such as a MEMS microphone or speaker, can be integrated with audio processing electronics in a single package. The audio processing electronics can be configured using control signals. The audio processing electronics can provide a single line serial data interface and a single line control interface. The audio transducers can be integrated with associated processing electronics. A silicon microphone can be integrated with an Analog to Digital Converter (ADC). The ADC output can be a single line serial interface. The ADC can be configured using a single line serial control interface. A speaker may be integrated with a Digital to Analog Converter (DAC). Audio transducers can also be integrated with more complex processing electronics. Audio processing parameters such as gain, dynamic range, and filter characteristics may be configured using the serial interface.

10. 发明授权

EP1374410B1 MULTI-SAMPLING SIGMA-DELTA ANALOG-TO-DIGITAL CONVERTER 有权
标题翻译：多采样SIGMA-DELTA模拟数字转换器
公开(公告)号：EP1374410B1
公开(公告)日：2006-10-25
申请号：EP01973125.6
申请日：2001-09-18
申请人： QUALCOMM INCORPORATED
发明人： BAZARJANI, Seyfollah
IPC分类号： H03M3/02
CPC分类号： H03M3/47 , H03M3/406 , H03M3/418 , H03M3/43 , H03M3/454
摘要： A bandpass SIGMA DELTA ADC utilizing either a single-loop or a MASH architecure wherein the resonators are implemented as either a delay cell resonator, a delay cell based resonator, a Forward-Euler resonator, a two-path interleaved resonator, or a four-path interleaved resonator. The resonator can be synthesized with analog circuit techniques such as active-RC, gm-C, MOSFET-C, switched capacitor, or switched current. The switched capacitor or switched current circuits can be designed using single-sampling, double-sampling, or multi-sampling circuits. The non-stringent requirement of a SIGMA DELTA ADC using switched capacitor circuits allows the ADC to be implemented in a CMOS process to minimize cost and reduce power consumption. Double-sampling circuits provide improved matching and improved tolerance to sampling clock jitter. In particular, a bandpass MASH 4-4 SIGMA DELTA ADC provides a simulated signal-to-noise ratio of 85 dB at an oversampling ratio of 32 for a CDMA application. The bandpass SIGMA DELTA ADC can also be used in conjunction with undersampling to provide a frequency downconversion.
摘要翻译：使用单环或MASH架构的带通SIGMA DELTA ADC，其中谐振器被实现为延迟单元谐振器，基于延迟单元的谐振器，正向 - 欧拉谐振器，双路交叉谐振器或四路谐振器，路径交错谐振器。谐振器可以用模拟电路技术（如有源RC，gm-C，MOSFET-C，开关电容或开关电流）合成。开关电容或开关电流电路可以使用单采样，双采样或多采样电路进行设计。使用开关电容电路的SIGMA DELTA ADC的非严格要求允许ADC在CMOS工艺中实现，以最大限度地降低成本并降低功耗。双采样电路提供了改进的匹配和提高了采样时钟抖动的容限。特别是，带通MASH 4-4 SIGMA DELTA ADC在CDMA应用中以32的过采样比率提供85 dB的模拟信噪比。带通SIGMA DELTA ADC也可以与欠采样一起使用以提供频率下变频。

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