Ring-shaped synchronous network system and time slave station
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United States of America Patent
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Jan 30, 2018
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app pub date -
Jul 19, 2013
filing date -
Jul 19, 2013
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Abstract
A time slave station includes a synchronization error detecting unit that includes: a CW synchronization error detecting counter that counts a synchronization correction cycle of a transmission path in which a frame is transmitted in a first direction; a CCW synchronization error detecting counter that counts a synchronization correction cycle of a transmission path in which a frame is transmitted in a second direction; a CW synchronization-enabled time period timer that counts a CW synchronization frame reception-enabled time period; a CCW synchronization-enabled time period timer that counts a CCW synchronization frame reception-enabled time period; a CW-based synchronization error determining unit that determines whether the CW synchronization frame is received in the CW synchronization frame reception-enabled time period; and a CCW-based synchronization error determining unit that determines whether the CCW synchronization frame is received during the CCW synchronization frame reception-enabled time period.
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