公开(公告)号：US09602433B2

公开(公告)日：2017-03-21

申请号：US13841355

申请日：2013-03-15

Applicant: QUALCOMM Incorporated

Inventor： Xuhao Huang ,  Ankit Srivastava ,  Xiaohong Quan ,  Seyfollah S Bazarjani

IPC: H04L12/28 ,  H04L12/947 ,  H04L12/40 ,  H04L12/403 ,  H04L25/02

CPC classification number: H04L49/25 ,  H04L12/40006 ,  H04L12/4035 ,  H04L25/0272

Abstract: An apparatus for sharing a serial communication port between a plurality of communication channels is described. The apparatus comprises a transceiver that manages communications over the serial communication port. The apparatus also includes a multiplexer coupled to the transceiver, wherein the multiplexer multiplexes the plurality of communication channels. The apparatus also includes identification information circuitry coupled to the multiplexer, wherein the identification information circuitry adds identification information to data from the plurality of communication channels that enables the plurality of communication channels to share the serial communication port. The serial communications port and the multiplexer permit communication between integrated circuits that meet at least one latency metric for the plurality of communication channels when the plurality of communication channels are active.

公开(公告)号：US20140103897A1

公开(公告)日：2014-04-17

申请号：US13654341

申请日：2012-10-17

Applicant: QUALCOMM INCORPORATED

Inventor： Le Wang ,  Xiaohong Quan ,  Vijayakumar Dhanasekaran ,  Omid Shoaei

IPC: G05F3/08

CPC classification number: H02M3/07 ,  H02M1/38 ,  H02M2001/0029 ,  H03K17/162 ,  H03K17/164

Abstract: Exemplary embodiments are directed to devices and method for operating a charge pump. A method may include activating a first switch coupled between a capacitor and a ground voltage over a first period of a charging phase. The first period may coincide with a non-overlapping time between the charging phase and an output phase. The method may also include activating a second switch coupled between the capacitor and an input voltage over a second period of the charging phase, wherein the first period begins prior to the second period. Further, the method may include deactivating the second switch over a third period of the charging phase and deactivating the first switch over a fourth period of the charging phase, wherein the third period begins prior to the fourth period.

Abstract translation: 示例性实施例涉及用于操作电荷泵的装置和方法。 一种方法可以包括在充电阶段的第一周期上激活耦合在电容器和接地电压之间的第一开关。 第一周期可以与充电阶段和输出阶段之间的非重叠时间重合。 该方法还可以包括在充电阶段的第二周期内激活耦合在电容器和输入电压之间的第二开关，其中第一周期在第二周期之前开始。 此外，该方法可以包括在充电阶段的第三周期内去激活第二开关，并且在充电阶段的第四周期上去激活第一开关，其中第三周期在第四周期之前开始。

公开(公告)号：US09014381B2

公开(公告)日：2015-04-21

申请号：US13723170

申请日：2012-12-20

Applicant: QUALCOMM Incorporated

Inventor： Xiaohong Quan ,  Peter J. Shah ,  Ankit Srivastava ,  Guoqing Miao

IPC: H03G11/00 ,  H04R3/00 ,  H04R29/00

CPC classification number: H04R3/007 ,  H04R29/001

Abstract: Techniques for sensing the resistance of a load. In an aspect, a sense resistor is provided in series with the load. Each terminal of the sense resistor is alternately coupled via switches to a sense amplifier. A second input of the sense resistor is coupled to a terminal of the load. The voltage drop across the load and the voltage drop across the load plus sense resistor are alternatively measured. These voltage drops may be digitized and used to compute a resistance of the load using, e.g., a digital processor.

Abstract translation: 用于感测负载电阻的技术。 在一方面，与负载串联提供感测电阻器。 检测电阻器的每个端子通过开关交替耦合到读出放大器。 检测电阻的第二输入耦合到负载的端子。 交替地测量负载上的电压降和负载+检测电阻两端的电压降。 这些电压降可以被数字化并且用于使用例如数字处理器来计算负载的电阻。

公开(公告)号：US20140029611A1

公开(公告)日：2014-01-30

申请号：US13841355

申请日：2013-03-15

Applicant: QUALCOMM INCORPORATED

Inventor： Xuhao Huang ,  Ankit Srivastava ,  Xiaohong Quan ,  Seyfollah S. Bazarjani

IPC: H04L12/947

CPC classification number: H04L49/25 ,  H04L12/40006 ,  H04L12/4035 ,  H04L25/0272

Abstract: An apparatus for sharing a serial communication port between a plurality of communication channels is described. The apparatus comprises a transceiver that manages communications over the serial communication port. The apparatus also includes a multiplexer coupled to the transceiver, wherein the multiplexer multiplexes the plurality of communication channels. The apparatus also includes identification information circuitry coupled to the multiplexer, wherein the identification information circuitry adds identification information to data from the plurality of communication channels that enables the plurality of communication channels to share the serial communication port. The serial communications port and the multiplexer permit communication between integrated circuits that meet at least one latency metric for the plurality of communication channels when the plurality of communication channels are active.

Abstract translation: 描述了用于在多个通信信道之间共享串行通信端口的装置。 该装置包括管理串行通信端口上的通信的收发器。 该设备还包括耦合到收发器的多路复用器，其中复用器复用多个通信信道。 该装置还包括耦合到多路复用器的识别信息电路，其中识别信息电路将识别信息添加到来自多个通信信道的数据，使多个通信信道能够共享串行通信端口。 串行通信端口和多路复用器允许在多个通信信道有效时满足多个通信信道的至少一个等待时间度量的集成电路之间的通信。