COMMUNICATION SYSTEM, METHOD OF CONTROLLING THE SAME, AND STORAGE MEDIUM
First Claim
1. A communication system including a parent station and a plurality of child stations,said parent station and said plurality of child stations being line-connected or loop-connected in a plurality of stages, andsaid parent station comprising a decision unit configured to decide, based on information representing states of said plurality of child stations, which one a first data relay method of transmitting data to a subsequent station in accordance with a clock reproduced from data received from a preceding station and a second data relay method of transmitting data to the subsequent station in accordance with a local clock generated in a local station should be employed by each of said plurality of child stations.
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Accused Products
Abstract
A communication system including a parent station and a plurality of child stations, the parent station and the plurality of child stations being line-connected or loop-connected in a plurality of stages, and the parent station comprises a decision unit configured to decide, based on information representing states of the plurality of child stations, which one a first data relay method of transmitting data to a subsequent station in accordance with a clock reproduced from data received from a preceding station and a second data relay method of transmitting data to the subsequent station in accordance with a local clock generated in a local station should be employed by each of the plurality of child stations.
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Citations
21 Claims
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1. A communication system including a parent station and a plurality of child stations,
said parent station and said plurality of child stations being line-connected or loop-connected in a plurality of stages, and said parent station comprising a decision unit configured to decide, based on information representing states of said plurality of child stations, which one a first data relay method of transmitting data to a subsequent station in accordance with a clock reproduced from data received from a preceding station and a second data relay method of transmitting data to the subsequent station in accordance with a local clock generated in a local station should be employed by each of said plurality of child stations.
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11. A method of controlling a communication system including a parent station and a plurality of child stations,
the parent station and the plurality of child stations being line-connected or loop-connected in a plurality of stages, the method comprising: -
in the parent station, deciding, based on information representing states of the plurality of child stations, which one a first data relay method of transmitting data to a subsequent station in accordance with a reproduced clock reproduced from data received from a preceding station and a second data relay method of transmitting data to the subsequent station in accordance with a local clock generated in a local station should be employed by each of the plurality of child stations.
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13. A communication system in which a plurality of communication stations are line-connected or loop-connected,
wherein each of the communication stations comprises a switching unit configured to switch between a first data relay method of transmitting data to a subsequent station in accordance with a reproduced clock reproduced from data received from a preceding station and a second data relay method of transmitting data to the subsequent station in accordance with a local clock generated in a local station, and a communication station that operates as a parent station comprises: -
a determination unit configured to determine a topology of the communication system; a decision unit configured to decide, based on the topology determined by said determination unit, a communication station that uses one of the first data relay method and the second data relay method; and a notification unit configured to notify the communication station of a decision result by said decision unit. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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Specification