公开(公告)号：US11899061B2

公开(公告)日：2024-02-13

申请号：US17347284

申请日：2021-06-14

Applicant: Apple Inc.

Inventor： Fabien S. Faure ,  Si Chen ,  Mansour Keramat ,  Arnaud J. Forestier

IPC: G08B21/00 ,  G01R31/317 ,  H03M1/12 ,  G01R13/02 ,  G06F11/10 ,  G01R19/25

CPC classification number: G01R31/31713 ,  G01R13/029 ,  G01R13/0272 ,  G01R19/2503 ,  G01R31/31705 ,  G06F11/10 ,  H03M1/12

Abstract: A voltage monitoring circuit is disclosed. An apparatus includes a first physical interface circuit and a real-time oscilloscope circuit configured to monitor a first voltage provided to the first physical interface circuit. The real-time oscilloscope is configured to receive an indication that an error was detected in data transmitted from the first physical interface to a second physical interface circuit. The real-time oscilloscope is further configured to provide for debug, to a host computer external to the first interface, information indicating a state of the first voltage at a time at which the error was detected.

公开(公告)号：US20220397604A1

公开(公告)日：2022-12-15

申请号：US17347284

申请日：2021-06-14

Applicant: Apple Inc.

Inventor： Fabien S. Faure ,  Si Chen ,  Mansour Keramat ,  Arnaud J. Forestier

IPC: G01R31/317 ,  H03M1/12 ,  G01R13/02 ,  G01R19/25 ,  G06F11/10

Abstract: A voltage monitoring circuit is disclosed. An apparatus includes a first physical interface circuit and a real-time oscilloscope circuit configured to monitor a first voltage provided to the first physical interface circuit. The real-time oscilloscope is configured to receive an indication that an error was detected in data transmitted from the first physical interface to a second physical interface circuit. The real-time oscilloscope is further configured to provide for debug, to a host computer external to the first interface, information indicating a state of the first voltage at a time at which the error was detected.

公开(公告)号：US20240356507A1

公开(公告)日：2024-10-24

申请号：US18302414

申请日：2023-04-18

Applicant: Apple Inc.

Inventor： Saikrishna Ganta ,  Sudharsan Kanagaraj ,  Siladitya Dey ,  Man-Chia Chen ,  Paritosh Bhoraskar ,  Srinivas Bangalore Seshadri ,  Tao Wang ,  Si Chen

IPC: H03F3/45

CPC classification number: H03F3/45475 ,  H03F2200/165 ,  H03F2200/171

Abstract: A high input impedance switched capacitor amplifier is disclosed. The switched capacitor amplifier includes at least a first buffer circuit configured to charge a first plurality of capacitors during a first time period. A switch circuit is configured to, during a second time period, cause a modification of an amount of charge stored on one of the first plurality of capacitors by coupling an input signal directly to the one of first plurality of capacitors. An amplifier circuit is configured to, based on a sampling voltage present on one of the first plurality of capacitors, generate an output signal.