Patent ID: 7203205
Filing Date: 2007-04-10
Classification: H04L

Abstract:
1. A polling device for performing communication control such that one or more frame synchronous transfer modes and one or more frame asynchronous transfer modes are used so as to perform a communication operation based on the order of priority in transfer which is set among all the transfer modes for each frame period, the device comprising: a polling counter section for sequentially reading all communication channels for each address number; a state circuit for sequentially changing the order of priority in transfer each time the polling counter section counts one round of values after initializing the state circuit for each frame period; a latch section for latching a value of the polling counter section for each frame period; and a matching detection section for comparing the value latched by the latch section with a value of the polling counter section, wherein a polling operation is started from the value latched by the latch section at the time of initializing the state circuit for each frame period.