公开(公告)号：US20190005974A1

公开(公告)日：2019-01-03

申请号：US15635553

申请日：2017-06-28

Applicant: QUALCOMM Incorporated

Inventor： Magesh HARIHARAN ,  Stefan ROHRER ,  Ren LI ,  Matthew SIENKO ,  Arash MEHRABI ,  Ye HU ,  Stefan MUELLER

IPC: G10L19/16 ,  H04J3/02 ,  H04J3/22 ,  G10L19/008

Abstract: System, methods and apparatus are described that relate to aligning timing of bi-directional, multi-stream I2S audio transmitted between IC devices, and to support audio streams that are digitized using multiple sampling rates. A method includes time-division multiplexing a first stream of digitized audio data with a second stream of digitized audio data at a primary device to obtain a first multiplexed signal, transmitting the first multiplexed signal over a serial bus to a secondary device is configured to extract the first stream of digitized audio data from the first multiplexed signal and provide the first stream of digitized audio data to a first audio peripheral coupled to the secondary device, extracting the second stream of digitized audio data from the first multiplexed signal at the primary device, and providing the extracted second stream of digitized audio data to a second audio peripheral coupled to the first device

公开(公告)号：US20160100248A1

公开(公告)日：2016-04-07

申请号：US14506537

申请日：2014-10-03

Applicant: QUALCOMM Incorporated

Inventor： Arash MEHRABI ,  Pradeep Charles SILVA ,  Derick HUGUNIN

IPC: H04R3/00

CPC classification number: H04R3/00 ,  G06F1/263 ,  G06F1/3215 ,  H04M1/0274 ,  H04M1/6058 ,  H04M1/72527 ,  H04R1/1041 ,  H04R5/04 ,  H04R2420/05

Abstract: A method and an apparatus for operating an electronic sensor and an electronic user input are provided. In one configuration, the apparatus includes a detection circuit configured to recognize a user input voltage generated by an electronic user input and a power supply configured to supply power to a detection circuit continuous without polling. In another configuration, the apparatus includes a port, a first power supply, a second power supply, and a control circuit configured to selectively couple the first power supply or the second power supply to the port based on a state of operation of an electronic sensor coupled to the port.

Abstract translation: 提供了一种用于操作电子传感器和电子用户输入的方法和装置。 在一种配置中，该装置包括检测电路，其被配置为识别由电子用户输入产生的用户输入电压和被配置为向检测电路供电而不轮询的电源。 在另一种配置中，该装置包括端口，第一电源，第二电源和控制电路，该电路被配置为基于电子传感器的操作状态来选择性地将第一电源或第二电源耦合到端口 加上港口。

公开(公告)号：US20150280660A1

公开(公告)日：2015-10-01

申请号：US14230909

申请日：2014-03-31

Applicant: QUALCOMM Incorporated

Inventor： Meysam AZIN ,  Arash MEHRABI ,  Wenchang HUANG

IPC: H03F3/185 ,  H03F3/00 ,  H04R3/00 ,  H03F3/45

CPC classification number: H03F3/185 ,  H03F3/005 ,  H03F3/181 ,  H03F3/187 ,  H03F3/45179 ,  H03F3/45183 ,  H03F2200/03 ,  H03F2203/45016 ,  H03F2203/45514 ,  H03H19/004 ,  H04R3/00

Abstract: An integrated DC blocking amplifier circuit, including: an operational amplifier configured in a differential amplifier; and at least first and second two-stage switched-capacitor circuits, each two stage switched-capacitor circuit including a first-stage circuit and a second-stage circuit, wherein the first two-stage switched capacitor circuit is connected to a positive feedback path of the operational amplifier and the second two-stage switched capacitor circuit is connected to a negative feedback path of the operational amplifier, wherein the first-stage circuit is switched at a relatively low switching frequency, while the second-stage circuit is switched at a relatively high switching frequency.

Abstract translation: 一种集成的DC阻塞放大器电路，包括：配置在差分放大器中的运算放大器; 以及至少第一和第二两级开关电容器电路，每个两级开关电容器电路包括第一级电路和第二级电路，其中所述第一两级开关电容器电路连接到正反馈路径 运算放大器和第二两级开关电容器电路连接到运算放大器的负反馈路径，其中第一级电路以相对低的开关频率切换，而第二级电路以 开关频率相对较高。