| Patent application number | Description | Published |
|---|
| 20090003326 | INTERFACE SWITCHING METHOD AND DEVICE - In a redundant system where multiple network interfaces can be switched, an interface switching device includes: a transformer for transforming automatic switch information between a predetermined type used for a predetermined network interface and each of other types used for network interfaces other than the predetermined network interface; a switch controller for performing switch control for automatic switch information of the predetermined type; and a control interface for connecting a first network interface to the switch controller via the transformer when first automatic switch information received from the first network interface is not of the predetermined type. | 01-01-2009 |
| 20090154338 | NETWORK, NODE DEVICE, NETWORK REDUNDANCY METHOD AND RECORDING MEDIUM - There is provided a network capable of coping with occurrence of failure including a plurality of autonomous networks. The network includes an existing network A including a plurality of autonomous networks AS | 06-18-2009 |
| 20090214206 | BANDWIDTH ALLOCATION METHOD, OPTICAL LINE TERMINATOR, SUBSCRIBER STATION, COMMUNICATION SYSTEM, AND RECORDING MEDIUM RECORDING PROGRAM OF DEVICE - An exemplary object of the present invention is to accurately reflect allocation requests and increase the bandwidth use efficiency without requiring expensive and fast integrated circuits or CPUs in the control unit even in a large-scale system with a large number of terminal devices. A subscriber station comprises allocating means for determining bandwidth allocation based on a predetermined allocation condition and bandwidth transmitting means for transmitting bandwidth allocation information determined by the allocating means to an optical line terminator. The optical line terminator comprises pipeline transmitting means for transmitting bandwidth allocation information transmitted from the subscriber stations to all subscriber stations to be allocated with bandwidth. | 08-27-2009 |
| 20090214209 | BANDWIDTH ALLOCATION METHOD, OPTICAL LINE TERMINATOR, OPTICAL NETWORK UNIT, COMMUNICATION SYSTEM, AND RECORDING MEDIUM RECORDING PROGRAM OF DEVICE - An object of the present invention is to increase the bandwidth use efficiency without requiring costly and fast integrated circuits or CPUs in the control unit even in a large-scale system with a large number of ONUs. An optical network unit includes an allocating unit that determines bandwidth allocation based on a predetermined allocation condition and a bandwidth transmitting unit that transmits bandwidth allocation information determined by the allocating unit to an optical line terminator. The optical line terminator is connected to a plurality of optical network units and includes a pipeline transmitting unit that transmits bandwidth allocation information transmitted from the optical network units to all optical network units to be allocated with bandwidth. | 08-27-2009 |
| 20090323695 | TWO-DIMENSIONAL PIPELINED SCHEDULING TECHNIQUE - A scheduler allowing high-speed scheduling scalable with the number of input and output ports of a crosspoint switch and suppressed unfairness among inputs is disclosed. The scheduler includes an M×M matrix of scheduling modules, each of which schedules packet forwarding connections from a corresponding input group of input ports to selected ones of a corresponding output group of output ports based on reservation information. A diagonal modulo pattern is used to determine a set of M scheduling modules to avoid coming into collision with each other. Each determined scheduling module performs reservation of packet forwarding connections based on current reservation information and transfers updated reservation information in row and column directions of the M×M matrix. | 12-31-2009 |
| 20100046365 | MULTIPLE-PROTECTION SYSTEM AND CONTROL METHOD IN A COMMUNICATION DEVICE - A multiple-protection system in a communication device, includes: a plurality of working units; at least one protection unit; and a unit controller controlling unit switching from a failed working unit to a protection unit, wherein each of the plurality of working units and the protection unit comprises: a plurality of working circuit modules; at least one protection circuit module; and a module controller controlling module switching from a failed working circuit module to a protection circuit module, wherein, when module protection cannot be made by the module switching, the unit switching is performed. | 02-25-2010 |
| 20110085795 | COMMUNICATION DEVICE AND DOWNSTREAM RESOURCE ALLOCATION METHOD - A communication device which communicates with a plurality of subscriber communication devices using optical signals of a plurality of wavelengths, includes: a traffic monitoring section for monitoring a downstream traffic volume of a downstream signal destined for each of the plurality of subscriber communication devices; and a resource allocating section for allocating a different one of a predetermined number of wavelength resources to each of groups which includes at least one downstream signal grouped according to a predetermined wavelength allocation rule based on its downstream traffic volume. | 04-14-2011 |
