Abstract: In an optical transmission apparatus in which a plurality of nodes are optically connected to one another via an optical transmission path, a light signal which is coded so that a mixture ratio of 1 and 0 constituting data is made close to 50% is transmitted through the optical transmission path. When a light signal is not emitted from all of the nodes, a dummy signal which is an AC-like signal is emitted to the optical transmission path. Therefore, an optoelectric conversion section can be always set to an active state, and the signal recognizability can be prevented from being lowered.

Abstract: An optical transmitter includes a light-emitting element, a driving circuit, a temperature detection unit, a storage device and a control circuit. The driving circuit causes, based on an input signal, the light-emitting element to emit an optical signal having a pulse shape. The temperature detection unit detects an ambient temperature of the light-emitting element. The storage device stores temperature characteristics information of the light-emitting element. The control circuit controls the driving circuit based on the ambient temperature detected by the temperature detection unit and the temperature characteristic information stored in the storage device, so that an extinction ratio of the optical signal having the pulse shape becomes substantially constant.

Abstract: A semiconductor storage device includes an external input/output port. A system bus of a server, which is extended to outside of the server, is connected to the external input/output port directly as a serial interface.

Abstract: An optical distribution module includes at least one light emitting element that converts an optical signal to an electrical signal, at least one light receiving element that converts the optical signal to the electrical signal, and a distribution circuit that is arranged so as to optically couple the light emitting element and the light receiving element. The distribution circuit branches or couples the optical signal from the light emitting element so as to emit the optical signal to the light receiving element.

Abstract: An information processing system includes a host device, a storage device and a bus. The bus transmits data to which an error correction code is appended, between the host device and the storage device. The storage device includes a storage section that stores the data. The storage device writes and reads the data received from the bus to and from the storage section with the error correction code appended to the data.

Abstract: A terminal end shielding method of a shielded cable, including the steps of: forming a first electrically-conductive thin film, which is elastic, on a peripheral surface of an outer skin end portion at a shielded cable terminal end portion at which a shielding member is exposed by a predetermined length from the outer skin end portion of a free end side; bending the shielding member and making the shielding member contact the electrically-conductive thin film; forming a second electrically-conductive thin film, which is elastic, on the shielding member which contacts the electrically-conductive thin film; and pressing and fixing a portion at which the second electrically-conductive thin film is formed, by a shielded cable nipping means.

Abstract: An optical distributor includes an optical-signal input port, a light receiving device, a light emitting device, a light splitter, and optical signal output ports. The light receiving device converts an optical light signal input to the optical-signal input port into an electric signal. The light emitting device converts the electric signal into an optical signal. The optical splitter 14 splits the converted optical signal into two optical signals. The optical-signal output ports output the split optical signals. The light receiving device includes a light receiving element, a pre-amplifier, and a limiting amplifier. The light emitting device includes a light-source drive element and a light emitting element.

Abstract: An optical signal communication apparatus includes a light transceiving section, a digital signal control section and a flexible wiring board. The light transceiving section performs at least one of transmission and reception of optical signals. The digital signal control section is disposed in a casing body and processes digital electronic signals from the light transceiving section. The flexible wiring board connects the light transceiving section with the digital signal control section. An insulating member is provided at the casing body, and the flexible wiring board is disposed on the insulating member.

Abstract: An optical signal transmission device including an optical signal receiving section, an optical signal transmitting section, a support member, and a digital signal control section. The optical signal receiving section receives an optical signal by a light-receiving element mounted on a board, converts the optical signal to a digital electric signal and outputs the digital electric signal. The digital signal control section processes the digital electric signal. The optical signal transmitting section converts a digital electric signal to an optical signal by a light-emitting element and outputs the optical signal. The optical signal receiving section and the optical signal transmitting section are provided on different surfaces of a support member.

Abstract: A terminal end shielding method of a shielded cable, including the steps of: forming a first electrically-conductive thin film, which is elastic, on a peripheral surface of an outer skin end portion at a shielded cable terminal end portion at which a shielding member is exposed by a predetermined length from the outer skin end portion of a free end side; bending the shielding member and making the shielding member contact the electrically-conductive thin film; forming a second electrically-conductive thin film, which is elastic, on the shielding member which contacts the electrically-conductive thin film; and pressing and fixing a portion at which the second electrically-conductive thin film is formed, by a shielded cable nipping means.

Abstract: The present invention provides an optical signal transmission apparatus for carrying out bi-directional light transmission. The optical signal transmission apparatus includes: a light sending module, for sending an optical main-signal having at least one data width, and receiving an optical sub-signal including a control signal; a light receiving module for receiving the optical main-signal and sending the optical sub-signal; and an optical cable for connecting between the light sending module and the light receiving module, wherein the light sending module comprises a control component which controls the output of the optical main-signal such that the output of the optical main-signal is stopped, when the optical sub-signal, which includes as data the reception status of the optical main-signal, is not being received, or when the reception status of the optical main-signal is indicating non-receiving.

Abstract: In a database management system using a shared-nothing architecture and adopting a system takeover in a DB storage area unit, correspondence information is provided which indicates a relation between a DB storage area and a DB processing server in charge of an access to the DB storage area, when a takeover occurs to some DB storage area, the correspondence information is changed in such a manner that an access process to the DB storage area is made in charge of another running DB processing server, and when some DB storage area is accessed in response to an inquiry request from a user, a DB processing server as an access request destination is determined by referring to the correspondence information.

Abstract: To provide a method of implementing cache logic technique in which total data processing time can be reduced, input data divided into block is sequentially processed in units of block in plural circuits using a programmable logic device provided with a circuit information input controller, a programmable logic circuit sector and a data cache. The plural circuits are sequentially reconfigured in the programmable logic device and execute processing per plural blocks which can be stored in the data cache. Intermediate data in units of plural blocks is stored in the data cache to be input data to a reconfigured circuit and intermediate data as the result of the processing by the reconfigured circuit is overwritten to the data cache. When the processing of the plural circuits is finished, the result of the processing is output to an external device without being stored in the data cache.

Abstract: An optical distributor includes an optical-signal input port, a light receiving device, a light emitting device, a light splitter, and optical signal output ports. The light receiving device converts an optical light signal input to the optical-signal input port into an electric signal. The light emitting device converts the electric signal into an optical signal. The optical splitter 14 splits the converted optical signal into two optical signals. The optical-signal output ports output the split optical signals. The light receiving device includes a light receiving element, a pre-amplifier, and a limiting amplifier. The light emitting device includes a light-source drive element and a light emitting element.

Abstract: In an optical transmission apparatus in which a plurality of nodes are optically connected to one another via an optical transmission path, a light signal which is coded so that a mixture ratio of 1 and 0 constituting data is made close to 50% is transmitted through the optical transmission path. When a light signal is not emitted from all of the nodes, a dummy signal which is an AC-like signal is emitted to the optical transmission path. Therefore, an optoelectric conversion section can be always set to an active state, and the signal recognizability can be prevented from being lowered.

Abstract: For signals to be transmitted through a signal transmission path constituted by a relay device group for relay for each set of a plurality of channels, a timing adjustment unit is provided in both or one of a receiver-side LSI and a transmitter-side LSI for each set of a plurality of channels transmitted through the relay device group for relay so that the signals can be transmitted with accurate timing. In addition, the timing adjustment unit can adjust the timing for signals transmitted through each relay device group, the timing in one receiver-side LSI in signal transmission through a plurality of relay device groups, and the timing in one-to-many signal transmission in which signals are transmitted from one transmitter-side LSI to a plurality of receiver-side LSIs.

Abstract: A signal transmission system has a master node and plural slave nodes performing data transmission with the master node. The master node has a serial-to-parallel converter for converting a serial data signal from each slave node into a parallel data signal. Each slave node has a transmission aligner for performing word alignment processing upon a parallel data signals, and a parallel-to-serial converter for converting the parallel data signal subjected to the word alignment processing by the transmission aligner into a serial data signal, and outputting the serial data signal to the master node.

Abstract: By reusing circuit information designed in the past, the amount of computation for combining circuit information for layout and wirings is significantly reduced. A memory part stores a plurality of pieces of circuit information for forming circuits in programmable logic circuits. Each of pieces of the circuit information has an identifier of its own circuit information, and in the case where part or all of the circuit information is formed with other circuit information, has the identifiers of the other circuit information as reference identifiers, as circuit data thereof. An acquisition part passes specification circuit information from an application program to an editing part, obtains circuit information of a specified circuit, sent from the editing part, and forms the specified circuit in the programmable logic circuits according to the circuit information.

Abstract: To provide a method of implementing cache logic technique in which total data processing time can be reduced, input data divided into block is sequentially processed in units of block in plural circuits using a programmable logic device provided with a circuit information input controller, a programmable logic circuit sector and a data cache. The plural circuits are sequentially reconfigured in the programmable logic device and execute processing per plural blocks which can be stored in the data cache. Intermediate data in units of plural blocks is stored in the data cache to be input data to a reconfigured circuit and intermediate data as the result of the processing by the reconfigured circuit is overwritten to the data cache. When the processing of the plural circuits is finished, the result of the processing is output to an external device without being stored in the data cache.

Abstract: A polishing treatment called CMP (chemical mechanical polishing) is utilized for filling a contact hole formed in a silicon oxide film with a metallic layer in a manufacturing process of a semiconductor device. After a CMP treatment, a target surface, on which the silicon oxide film and the metallic layer are exposed, is washed with a washing liquid so as to remove residues due to the CMP treatment. The washing liquid comprises a fluorine compound for providing an etchant for the silicon oxide film and the metallic layer, and a protective agent which can be adhered onto a surface of the metallic layer so as to form a protective film. The ratio between the fluorine compound and the protective agent is set such that etching rates of the silicon oxide film and the metallic layer to be effected by the washing liquid fall within ranges of from 0.5 nm/min to 5 nm/min and from 0.5 nm/min to 6 nm/min, respectively, and a ratio between these etching rates falls within a range of from "2:1" to "1:3".