Fujitsu Corporation

Eiji Iida

Miwa Taniguchi

Toshihiro Suzuki

Kazuaki Nagamine

Shingo Hara

Tomoyuki Kanzaki

Takuma Shouji

Yasuo Fujii

Taro Asao

Tsutomu Tsurumi

In an apparatus having data installed therein, the apparatus includes a data storage part for storing a (n+1)th-order file obtained by bundling an nth-order file and (n+1)th data corresponding to an (n+1)th function level into one file, wherein n is an integer, an identifier storage part for storing an identifier indicating a function level of data to be installed in the apparatus, and a controller for detecting the function level based on the identifier stored in the identifier storage part, de-bundling the (n+1)th-order file stored in the data storage unit as many as times corresponding to the function level, and applying the de-bundled data to the apparatus.

Apparatus having data installed and method of upgrading data

The present invention relates to a signal processing device and a signal processing method that are capable of processing various types of signals. The signal processing device comprises a frequency detecting unit detecting a frequency of a data signal by checking synchronization between the data signal and a reference signal, an oscillation unit supplying the reference signal to the frequency detecting unit, a frame detecting unit detecting a frame organizing the data signal, and a control unit changing a frequency of the reference signal supplied by the oscillation unit to take frequency synchronization between the data signal and the reference signal in checking the synchronization by the frequency detecting unit, and setting information of the frequency, of which the frequency synchronization has been taken, in the frame detecting unit.

Signal processing device and signal processing method

To provide a transmission apparatus capable of setting the same control data to the entire child transmission apparatuses instantaneously at a time, thereby leading to improved maintenance operation and bringing about efficient maintenance and system stability. The transmission apparatus receives from a maintenance operator a designation of a parent apparatus having the control data set in advance. That control data is to be inherited to a child apparatus. The transmission apparatus determines whether any transmission apparatus has already been registered as parent apparatus in the child apparatus, and also determines whether the designated parent apparatus has already been registered as a child apparatus in the child apparatus. The transmission apparatus then requests the designated parent apparatus to transfer the control data in the designated parent apparatus to the child apparatus, when the designated parent apparatus is not registered in the child apparatus.

Inheritance control method of network control data between transmission apparatuses and transmission apparatus using the same

When a tunable laser is operating at any one of the different wavelengths, wavelength data is sampled and stored in a memory device. In the case where the same operating wavelength as a wavelength hitherto operated needs to be reset to the tunable laser, the wavelength data stored in the memory device is set to the tunable laser. This makes it possible to avoid a shift in wavelength due to age degradation of the tunable laser that selectively outputs any one of light signals of different wavelengths in dependence on the wavelength data set to the tunable laser.

Method and unit for setting a wavelength to a tunable laser

An image editing system for transmission network supervision for comprehensibly displaying the status of a plurality of stations and the transmission routes connecting them in a specific area. Initially, station data are created as a data source for graphically displaying each of the stations within the area. The station data are stored in a first memory. Then area data are created as a data source for graphically displaying a map of the area. The area data are stored in a second memory. Map data are also created to display graphically an area map based on the station data and area data. The map data are stored in a third memory. The area map includes an image map that is a map of the area reduced to a desired scale, the multiple stations superimposed on the image data, and the transmission routes connecting these stations. The area map is displayed on a monitor by use of the map data retrieved from the third memory.

Growing community of inventors

Kawasaki, Japan

Eiji Iida