公开(公告)号：US09552804B2

公开(公告)日：2017-01-24

申请号：US13913472

申请日：2013-06-09

Applicant: Apple Inc.

Inventor： Paul J. Costa ,  David R. Cox ,  Benjamin A. Bard

IPC: G10K11/16 ,  G06F1/20 ,  H05K7/20

CPC classification number: G10K11/16 ,  G06F1/20 ,  H05K7/20209

Abstract: One embodiment of the present invention provides a system that manages the acoustic noise produced by a device. During operation, the system receives a set of acoustic characteristics for the device. The system then uses these acoustic characteristics to estimate the acoustic noise being generated by the device. Next, the system uses the estimated acoustic noise to adjust a setting in the device to manage the acoustic noise produced by the device.

Abstract translation: 本发明的一个实施例提供一种管理由设备产生的声学噪声的系统。 在操作期间，系统接收一组该设备的声学特性。 然后，系统使用这些声学特性来估计由设备产生的声学噪声。 接下来，系统使用估计的声学噪声来调整设备中的设置以管理由设备产生的声学噪声。

公开(公告)号：US09330849B2

公开(公告)日：2016-05-03

申请号：US14285461

申请日：2014-05-22

Applicant: Apple Inc.

Inventor： Zhong-Qing Gong ,  Kevin R. Richardson ,  Yanchu Xu ,  Connor R. Duke ,  Benjamin A. Bard

IPC: H01G4/30 ,  H01G4/12 ,  H05K1/18 ,  H01G4/255 ,  H01G4/005 ,  H05K3/34

CPC classification number: H01G4/30 ,  H01G4/005 ,  H01G4/12 ,  H01G4/255 ,  H05K1/181 ,  H05K3/3442 ,  H05K2201/10015 ,  H05K2201/2045 ,  Y02P70/611 ,  Y10T29/435

Abstract: A Non-Uniform Dielectric Layer, Multi-Layer-Ceramic-Capacitor (MLCC) has upper and lower dielectric layers separating upper and lower electrode layers, where the lower dielectric layers have a greater vertical thickness than the upper dielectric layers to reduce piezoelectric effect driven capacitor reaction forces on a printed circuit board (PCB) on which the capacitor is mounted. Such an MLCC may include an upper set of dielectric layers that separate adjacent pairs of upper electrode layers in a top portion of the MLCC, and a lower set of dielectric layers that separate adjacent pairs of lower electrode layers in a bottom portion of the MLCC. A bottom portion of the MLCC may be mounted on a PCB. The thickness of the lower dielectric layers may be between 1.5 and 3.5 times greater than the upper dielectric layers to reduce piezoelectric effect driven capacitor reaction forces in the audio range of human hearing.

Abstract translation: 非均匀电介质层，多层陶瓷电容器（MLCC）具有分隔上下电极层的上下电介质层，其中下电介质层具有比上电介质层更大的垂直厚度，以减少压电效应驱动 在其上安装电容器的印刷电路板（PCB）上的电容器反作用力。 这样的MLCC可以包括在MLCC的顶部分隔相邻的上电极层对的上部介电层和在MLCC的底部分隔相邻的下电极层对的下组电介质层。 MLCC的底部可以安装在PCB上。 下电介质层的厚度可以是上电介质层的1.5至3.5倍，以减少在人类听觉的音频范围内的压电效应驱动的电容器反作用力。