- 专利标题: Precise time management using local time base
-
申请号: US17472242申请日: 2021-09-10
-
公开(公告)号: US11683149B2公开(公告)日: 2023-06-20
- 发明人: Christopher D. Finan , Alexander Ukanwa , Charles F. Dominguez , Jean-Didier Allegrucci , Jeffrey J. Irwin , Kalpana Bansal , Michael Bekerman , Remi Clavel
- 申请人: Apple Inc.
- 申请人地址: US CA Cupertino
- 专利权人: Apple Inc.
- 当前专利权人: Apple Inc.
- 当前专利权人地址: US CA Cupertino
- 代理机构: Kowert, Hood, Munyon, Rankin & Goetzel, P.C.
- 代理商 Erik A. Heter; Dean M. Munyon
- 主分类号: G06F1/12
- IPC分类号: G06F1/12 ; H04L7/00
摘要:
A method and apparatus for synchronizing a timebase is disclosed. A timebase management circuit includes limit circuitry, in a first clock domain, which generates, based on a global timebase, an initial timebase limit. The timebase management circuit includes, in a second clock domain, adjustment circuitry that generates an adjusted timebase limit based on the initial timebase limit. A storage circuit in the second clock domain stores a local timebase. Update circuitry, coupled to an output of the storage circuit, generates an updated local timebase using a clock signal in the second clock domain, wherein the updated local timebase is subject to the adjusted timebase limit.
公开/授权文献
- US20220085969A1 Precise Time Management Using Local Time Base 公开/授权日:2022-03-17
信息查询