Matsushita Electric Industrial Co., Ltd.

Other

Fujitsu Corporation

Hitachi, Ltd.

Tamagawa K-12 & University

Osamu Hirota

Hirota, Osamu

Hiroshi Onaka

Setsuo Yoshida

Keinosuke Kanashima

Shinya Sasaki

Minoru Maeda

Hideaki Tsushima

Yoshitaka Takasaki

Hiroyuki Naka

Hiroshi Ogura

Hideki Matsukawa

Naoko Matsuda

Toshihiko Ando

Toshiyuki Fujioka

Norihide Higaki

Norihiko Egami

Yoshinari Kato

Masaki Sohma

Kenichi Satoh

Masayuki Tsuruha

Hiroyuki Fukuno

Shiro Sumita

Naoto Sakai

Susumu Nojiri

Yasuharu Shimizu

Motoaki Kamihara

Kazuya Aoyama

Setsuo c/oFujitsu Limited Yoshida

Hiroshi c/oFujitsu Limited Onaka

A configuration method of an optical signal, an encryption device, and an encryption system makes it possible for a legitimate communicating party to ensure information-theoretic security against a known plain text attack and to communicate long-distance. By adding a transmission information data sequence randomization device to the Yuen encrypted communications device according to the present information, which divides transmission information data into blocks, appends sequence numbers thereto, randomly switches the sequence of the blocks with a digitized signal of output of an electrical noise generator, and inputs same into a transmission data generator of a conventional Yuen encrypted optical transmitter, the relation between a known transmission information data sequence (plain text) and an optical signal which is outputted from the transmitter is randomized, allowing forcibly making even a circumstance wherein a known-plain text attack would be possible into a cipher-text-only attack, realizing information-theoretic security against a known-plain text attack.

Optical transmission device and reception device for Yuen encryption, optical transmission method and reception method for Yuen encryption, and encrypted communication system

An injection flame burner in which temperature of the generated flame itself can be sustained around the flame. A plurality of double structure injection nozzles each consisting of an outer tube and an inner tube provided coaxially with the outer tube, are arranged such that hydrogen gas is ejected from one of the outer tubes and the inner tubes and oxygen gas is ejected from the other tubes, and the injection port of each injection nozzle is located on the injection surface. Each injection nozzle includes at least one main injection nozzle having an inner tube formed to spread toward the injection surface side, and another sub-injection nozzle arranged around the main injection nozzle, wherein gas is injected from the inner tube of the main injection nozzle under a higher pressure state as compared with gas injected from the sub-injection nozzle.

Injection flame burner and furnace equipped with same burner and method for generating flame

An encryption technique allowing use of classic Y-00 scheme performed using classic physical random numbers instead of quantum fluctuation in electrical communication and data storage in recording media, including a first modulation step for multilevel-modulating input data by associating with specific state pairs determined by physical random numbers, a second modulation step for outputting the output of the first step by irregularly associating with another signal by physical random numbers, and a channel coding step for channel-coding the output of the second step into desired codeword and outputting it as encrypted data, wherein the decoded signal obtained by channel-decoding the encrypted data can be discriminated which of specific state pairs the signal corresponds to and demodulated into the input data, and output by the first modulation by state pairs other than the specific state pairs and the second modulation by a physical random number different from the physical random number.

Encryption method, cryptogram decoding method, encryptor, cryptogram decoder, transmission/reception system, and communication system

An encryption technique having a greater encryption strength than conventional mathematical encryption by using classic physical random numbers etc., including a step for modulating one-bit input data into a coded signal by associating it with a discrete value of at least two bits determined by pseudo random numbers and physical random numbers and a step for channel-coding and outputting the coded signal, wherein 1) the coded signal can be demodulated into the input data by the pseudo random number, 2) the number of sets of input data, pseudo random number, and physical random number corresponding to a particular discrete value is equal for two values of the input data, and 3) the number of sets of pseudo random number and physical random number corresponding to respective values of the input data and respective values of the discrete value is equally associated also with any set of them.

Encryption method, cryptogram decoding method, encryptor, cryptogram decoder, and communication system

A method and system for distributing a key is provided which make use of effects of noise caused at the time of transmitting or receiving a signal to send a key. A transmission signal is amplified at a plurality of stages while the relationship between the transmission signal and noise is being maintained at a level enough to satisfy predetermined criteria for security measures against eavesdropping activities, and the key is sent over a long distance. The aforementioned operation makes it possible to transmit or distribute a key over a long distance while maintaining the relationship between the transmission signal and noise at a level enough to satisfy the criteria for security measures against eavesdropping activities.

System and method for distributing key

A position of an inner surface of a panel ( ) is measured with the panel being held, and a position of a main surface of a color selection electrode ( ) is measured with a color selection electrode frame ( ) being held, so that the measured positional data provide a measured value corresponding to a spacing between the panel inner surface and the main surface of the color selection electrode. In a state that the engaging holes of the supporting members are engaged with dummy pins ( ) arranged in a predetermined positional relationship to the panel pins ( ) on the condition that the panel is held, the position of the main surface of the color selection electrode is adjusted with respect to engaging holes on the basis of the predetermined positional relationship and the measured value, and supporting members are fixed by welding to the color selection electrode frame.

Method of assembling color crt and assembling device

A method for laminating boards includes placing boards with a narrow gap therebetween, inserting an adhesive injection nozzle the gap, discharging of adhesive from the nozzle into the gap so that the discharged adhesive makes into contact with the two boards, continuing discharging the adhesive while the boards are being rotated in a planar direction thereof so that the adhesive is placed in a loop within the gap, retreating the nozzle from the gap, and narrowing the gap between the boards so that the adhesive is spread throughout the gap.

Method for laminating boards

A method of manufacturing an LCD device, in which, a seal pattern is formed by applying a sealing material for enclosing a liquid crystal on one of a pair of substrates between which liquid crystal is sandwiched. Spacers are formed on the other substrate to determine a cell gap, then the substrates are respectively held by a pair of surface plates disposed in a vacuum chamber, in which at least one of the surface plates is movable. The air-pressure of the vacuum chamber is then decreased, and the alignment of a pair of substrates is performed and a cell gap is formed by pressing the substrates toward each other, by which the gap precision, the gap uniformity and the alignment precision of an LCD device can be improved.

Method of manufacturing liquid crystal display device with a double seal

The present invention provides an apparatus which is capable of discharging a process liquid to a rotating substrate at a very constant rate irrespective of variations in the state of the process liquid. A process liquid is discharged toward a rotating substrate by nozzles which are moved from inner to outer radius sides of the rotating substrate. The present invention further provides a method in which film thickness control conditions are determined based on a simulation of a behavior of a process liquid on a substrate.

Method and apparatus for determining film thickness control conditions

An optical receiver includes a squeezer for changing the quantum state of a signal lightwave to a squeezed state, a slave laser put in an injection locking state by the signal lightwave outputted from the squeezer, and an optical homodyne detector for carrying out optical homodyne detection for the signal lightwave outputted from the slave laser.

Quantum state control apparatus, optical receiver and optical

Growing community of inventors

Yokohama, Japan

Osamu Hirota