Synchronization control system
First Claim
1. A synchronization control system which respectively comprises transmission processors in a master terminal connected to a network and in a plurality of slave terminals and which synchronizes the slave terminals with the master terminal, whereinthe transmission processor of the master terminal comprises:
- a transmission interface which holds a data packet to be sent or received and which acquires a receiving timing for synchronization control calculation when receiving a packet for synchronization control,a timing generator which generates a constant internal timing,a sending/receiving processor which sends a synchronization request demanding packet to a particular slave terminal and sends a synchronization reply packet when receiving a synchronization request packet from the slave terminal that has received the synchronization request demanding packet, anda synchronization controller which calculates a synchronization band from the time of the receipt of the data packet and from time information added to the received data packet to determine a synchronization state and which adjusts a correction amount in accordance with the synchronization state and sends an internal timing correction command to the timing generator.
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Accused Products
Abstract
According to an embodiment, the transmission processor of the master terminal includes a sending/receiving processor which sends a synchronization request demanding packet to a particular slave terminal and sends a synchronization reply packet when receiving a synchronization request packet from the slave terminal that has received the synchronization request demanding packet, and a synchronization controller which calculates a synchronization band from the time of the receipt of the data packet and from time information added to the received data packet to determine a synchronization state and which adjusts a correction amount in accordance with the synchronization state and sends an internal timing correction command to the timing generator.
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Citations
12 Claims
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1. A synchronization control system which respectively comprises transmission processors in a master terminal connected to a network and in a plurality of slave terminals and which synchronizes the slave terminals with the master terminal, wherein
the transmission processor of the master terminal comprises: -
a transmission interface which holds a data packet to be sent or received and which acquires a receiving timing for synchronization control calculation when receiving a packet for synchronization control, a timing generator which generates a constant internal timing, a sending/receiving processor which sends a synchronization request demanding packet to a particular slave terminal and sends a synchronization reply packet when receiving a synchronization request packet from the slave terminal that has received the synchronization request demanding packet, and a synchronization controller which calculates a synchronization band from the time of the receipt of the data packet and from time information added to the received data packet to determine a synchronization state and which adjusts a correction amount in accordance with the synchronization state and sends an internal timing correction command to the timing generator. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A master terminal which is applied to a synchronization control system, the synchronization control system respectively comprising transmission processors in the master terminal connected to a network and in a plurality of slave terminals and synchronizing the slave terminals with the master terminal, wherein
the transmission processor of the master terminal comprises: -
a transmission interface which holds a data packet to be sent or received and which acquires a receiving timing for synchronization control calculation when receiving a packet for synchronization control, a timing generator which generates a constant internal timing, a sending/receiving processor which sends a synchronization request demanding packet to a particular slave terminal and sends a synchronization reply packet when receiving a synchronization request packet from the slave terminal that has received the synchronization request demanding packet, and a synchronization controller which calculates a synchronization band from the time of the receipt of the data packet and from time information added to the received data packet to determine a synchronization state and which adjusts a correction amount in accordance with the synchronization state and sends an internal timing correction command to the timing generator. - View Dependent Claims (9, 10, 11, 12)
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Specification