| Patent application number | Description | Published |
|---|
| 20110026538 | NETWORK DEVICE OF TRANSFER SWITCHING TYPE AND FRAME TRANSFER METHOD - A network device of is a network device that transfers frames by repeating, in a constant cycle, a reserved transfer interval and a free transfer interval. The network device includes a transmission port, a cycle timer, a mode switching control unit that monitors a transfer state of the transmission port and selects a store-and-forward system when the transmission port is in the transfer process and selects a cut-through system when the transmission port is not in the transfer process, and a transfer prohibition control unit that selects the cut-through system as a transfer system when a non-reserved frame is transmitted and switches a transfer method of the non-reserved frame to the store-and-forward system when a reserved transfer interval is established, with reference to the cycle timer. | 02-03-2011 |
| 20110026654 | NETWORK DEVICE OF HIGH-PRECISION SYNCHRONIZATION TYPE, NETWORK SYSTEM, AND FRAME TRANSFER METHOD - A network device that arranges and transfers in an initial period of a cycle a synchronization frame that synchronizes network devices within a network includes: a cycle timer that measures a time within the cycle and a synchronization management unit that suspends frame transmission for a predetermined period till a start of the next cycle in each cycle, on the basis of information from a cycle timer. | 02-03-2011 |
| 20110051751 | NETWORK SYSTEM OF TIME BAND RESERVATION, FRAME TRANSFER METHOD, AND NETWORK DEVICE - In a network system of this invention including a plurality of network devices that transfer frames by repeating, in a constant cycle, a reserved transfer interval that is a time band, in which a frame is transferred with a reservation and a free transfer interval that is a time band, in which a frame is freely transferred, a relay network device that links a first network device that is a transmission source of a frame and a second network device that is a transmission destination of the frame and the first network device execute a reservation processing such that the same time band within the reserved transfer interval is reserved and transfer the frame from the first network device to the second network device on the basis of the reservation result. | 03-03-2011 |
| 20110072145 | NETWORK DEVICE PERFORMING CONNECTION CHECK, NETWORK SYSTEM, AND FRAME TRANSFER METHOD - A network device that transfers frames by repeating, in a constant cycle, a reserved transfer interval that is a time band, in which a frame is transferred with a reservation, and a free transfer interval that is a time band, in which a frame is freely transferred, includes: a BPDU generation unit that generates a first BPDU; and a BPDU transmission instruction unit that instructs to arrange the first BPDU in the reserved transfer interval and transmit the first BPDU to a first other network device. | 03-24-2011 |
