Mitsubishi Electric Corporation

Nec Corporation

Yasutaka Yamashita

Shigenori Tani

Shigeru Uchida

Katsuyuki Motoyoshi

Kazuma Kaneko

Hidefumi Natsume

A filter device includes: delay units serially connected to delay an input signal and output a delayed signal; multiplication units multiplying the delayed signal by a filter coefficient based on a predetermined value and a multiplying factor adjustment value; a coefficient adjustment unit that, when a multiplication result obtained by multiplying the predetermined value by the multiplying factor adjustment value exceeds a maximum value of a filter-coefficient representation range, divides the multiplication result exceeding the maximum value by the maximum value, and outputs a quotient of division as a coefficient adjustment value; a signal conversion unit outputting a signal obtained by adding after-filter-coefficient-multiplication signals outputted by the multiplication units and an adjusted signal obtained by adjusting a corresponding delayed signal using the coefficient adjustment value; and a division unit generating an output signal by dividing the signal outputted by the signal conversion unit by the multiplying factor adjustment value.

Filter device

A signal specification identification apparatus includes processing circuitry that estimates the transmission rate of a received signal, performs sampling frequency conversion on the received signal, calculates a probability corresponding to each of a plurality of candidates for a specification of the received signal, selects a candidate using the respective probabilities, and calculates reliability corresponding to a selected candidate, determines whether to output the selected candidate as an identification result or perform the sampling frequency conversion again, based on the reliability, and changes a parameter indicating the ratio of the sampling frequency conversion when it is determined that the sampling frequency conversion is to be performed again. Processing is repeated until the processing circuitry determines that the selected candidate as the identification result is to be output.

Signal specification identification apparatus, control circuit, and program storage medium

A data processing device includes a restoration unit that performs a conversion operation on an input signal to convert the input signal into a signal having no distortion caused by an external factor, and a selection unit that selects and outputs either an unrestored signal, which is the input signal, or a restored signal, which is a signal obtained by the restoration unit by performing the conversion operation, based on a feature quantity of the unrestored signal and on a feature quantity of the restored signal.

Data processing device, transmission device, reception device, artificial satellite, and data processing method

A network management device according to the present invention includes a metric calculation unit that calculates, using location information of multiple nodes constituting a network, metrics for respective combinations of the nodes, a false detection determination unit that determines, using the metrics and using link estimation information, which is information indicating a combination of nodes presumed that has a link therebetween, a falsely detected link corresponding to a combination of nodes indicated as having a link therebetween in the link estimation information, but presumed that has no link therebetween in reality, and a non-detection determination unit that determines, using the metrics and the link estimation information, an undetected link corresponding to a combination of nodes indicated as having no link therebetween in the link estimation information, but presumed that has a link therebetween in reality.

Network management device, control circuit, and recording medium

A layerswitch enables communication between different layernetworks by rewriting an expansion VLAN tag according to a network of a frame transfer destination, as well as producing the same effect, by rewriting an expansion VLAN tag, as that obtained by applying expansion VLAN tags to the third and the following stages.

Growing community of inventors

Tokyo, Japan

Yasutaka Yamashita