- 专利标题: APPARATUS AND METHOD FOR SYNCHRONOUS HARDWARE TIME STAMPING
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申请号: US13347400申请日: 2012-01-10
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公开(公告)号: US20130177015A1公开(公告)日: 2013-07-11
- 发明人: Lee Harrell House , Ming-Hsin Kuo , Dileep Sivasankaran , Frank S. Madren
- 申请人: Lee Harrell House , Ming-Hsin Kuo , Dileep Sivasankaran , Frank S. Madren
- 专利权人: GarrettCom, Inc.
- 当前专利权人: GarrettCom, Inc.
- 主分类号: H04L12/56
- IPC分类号: H04L12/56
摘要:
Methods and apparatus that may be used to provide timestamps to physical layer devices are provided. One method includes obtaining a time value from a clock associated with a physical layer device that is communicatively coupled to a primary data packet switch. The method further includes adding a processing time to the time value to generate a timestamp and transmitting the timestamp to a multiplexer circuit. The method further includes writing the timestamp in parallel from the multiplexer circuit to a plurality of external physical layer devices that are communicatively coupled to a secondary data packet switch and are located external to a housing of the secondary data packet switch.
公开/授权文献
- US08855108B2 Apparatus and method for synchronous hardware time stamping 公开/授权日:2014-10-07