Invention Grant
- Patent Title: Maintaining coordination following a wireless reset
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Application No.: US16416188Application Date: 2019-05-18
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Publication No.: US10509625B2Publication Date: 2019-12-17
- Inventor: Leo Lay , Adrian Harold Chadd , Haisong Wang , Shiwei Zhao , Li Li , Gaylord Yu
- Applicant: EVA Automation, Inc.
- Applicant Address: US CA Menlo Park
- Assignee: EVA Automation, Inc.
- Current Assignee: EVA Automation, Inc.
- Current Assignee Address: US CA Menlo Park
- Agent Steven Stupp
- Main IPC: H04J3/06
- IPC: H04J3/06 ; G06F3/16 ; H04R27/00 ; H04L7/00 ; H04L7/033 ; H04R3/12 ; H04L29/06 ; H04N21/43 ; H04N21/233 ; H04H60/80 ; H04M1/725 ; H04N21/81

Abstract:
An electronic device that reduces relative drift is described. In particular, an interface circuit in the electronic device may calculate, based on differences between transmit times when packets were transmitted by a second electronic device and receive times of the packets, relative drift as a function of time between a clock in the interface circuit and a second clock in the second electronic device. Then, the interface circuit may adjust, based on the relative drift, a clock circuit that provides the clock to eliminate the relative drift, and may store the adjustments to the clock circuit. Furthermore, when a wireless reset occurs, the interface circuit may adapt the clock circuit based on the stored adjustments to reduce the relative drift while the interface circuit restores frequency lock with the second clock based on additional packets with additional transmit times that are received from the second electronic device.
Public/Granted literature
- US20190272146A1 Maintaining Coordination Following a Wireless Reset Public/Granted day:2019-09-05
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