公开(公告)号：US20250085765A1

公开(公告)日：2025-03-13

申请号：US18465785

申请日：2023-09-12

Applicant: Apple Inc.

Inventor： Chee Lim Nge ,  Peter Hyungrok Sung ,  Douglas A. MacKay ,  Diwakar N. Tundlam ,  Jun Hou ,  Tu Le ,  Vishal Gupta ,  Ning Tian ,  Daniele Perretta ,  Bo Zhou ,  Michael Eng

IPC: G06F1/3234 ,  G01R31/387 ,  G06F1/3218

Abstract: Systems and methods are disclosed for allocating and distributing power management budgets for subsystems of a computer system. For each of a plurality of subsystems, a power management system may generate a long-term power budget and a closed-loop power budget, and then determine a final power budget to provide to the subsystem, e.g., by applying a min function, a weighted sum, or some other function to the long-term power budget and the closed-loop power budget. The closed-loop power budget is determined based on observations of power draw over a past period of time, and therefore cannot respond immediately to large changes in power. The long-term power budget is generated based on a prediction of battery capability over an upcoming window of time, and may therefore provide a power cap before the system is under duress.

公开(公告)号：US20190393734A1

公开(公告)日：2019-12-26

申请号：US16198365

申请日：2018-11-21

Applicant: Apple Inc.

Inventor： Bo Zhou ,  Atul A. Salvekar ,  Andrew H. Jones ,  Brian D. Mariner ,  Michael F. Jean ,  Moshe H. Malkin ,  Benjamin M. Oztalay ,  Arash Mehrabi ,  Jose Santos Martinez

IPC: H02J50/80 ,  H02J50/12 ,  H02J7/02 ,  H04B5/00

Abstract: A wireless power transmitting device transmits wireless power signals to a wireless power receiving device using a wireless power transmitting coil. The wireless power receiving device may transmit data packets to the wireless power transmitting device. The wireless power transmitting device may include a data receiver that is coupled to the wireless power transmitting coil and that receives the transmitted data packets. The data receiver may be configured to demodulate the received data packets. The data packets may include at least preamble bits, start bits, and data bits encoded as biphase half-bit signals in accordance with a predefined wireless power transfer protocol. During demodulation, the receiver may perform preamble detection, start bit detection, and data bit detection by comparing the input signals to corresponding reference patterns using a maximum likelihood sequence detection scheme. Phase recovery may be employed throughout to help provide immunity to phase change.