Nec Corporation

Mitsubishi Kasei Corporation

Mitsubishi Chemical Corporation

Nippon Shokubai Co., Ltd.

Jfe Engineering Corporation

Junya Watanabe

Hirohisa Kubota

Shintaro Sawada

Tsuyoshi Ito

Katsuhiko Yano

Takamitsu Morita

Hajime Akiyama

Takashi Nakayama

Masatoshi Ueoka

Takeshi Uchiyama

Yasuhiro Shingai

Keiichi Okuyama

Kazumasa Wakimoto

Tsunehiko Kurata

Akio Shimomura

Toyokazu Sugawara

Keiko Kudo

Satoshi Horiuchi

Akinori Jyo

Problem to be Solved To provide a waste gasification melting apparatus which, even if a fuel gas is used as an alternative to a part of the coke, the temperature of the coke bed can be sufficiently raised, and a method using the same. Solution A waste gasification melting apparatus including an oxygen rich air supply apparatusfor blowing oxygen rich air into a tuyere, and a fuel gas supply apparatusfor supplying a fuel gas to the tuyere, and a controllerfor controlling the oxygen rich air supply apparatus; the oxygen rich air supply apparatusmixing air and oxygen to prepare oxygen rich air and supply the oxygen rich air to the tuyere; and the controllercontrolling the amount of air to be mixed and the amount of oxygen to be mixed in the oxygen rich air supply apparatusso as to give an oxygen concentration of the oxygen rich air in accordance with the amount of fuel gas supplied to the tuyerefrom the fuel gas supply apparatus

Waste gasification melting apparatus and waste gasification melting method using the same

A secure electronic inserter. A picture analyzeranalyzes an input picture, and decides the insertion strength of the electronic water marking to be inserted, from one pixel of the input pictureto another, to output the insertion strength informationto an electronic watermark pattern inserterand to a shifting information pattern inserterThe electronic watermark pattern inserterinserts an electronic watermark pattern, stored in an electronic watermark pattern storage unitinto the input patternThe key information pattern inserterinserts the key information patternstored in the key information pattern storage unitinto a picture to be processedhaving the inserted electronic watermark pattern, in accordance with the insertion strength informationto output the resulting picture.

Apparatus and methods for inserting and detecting electronic watermark

A digital contents generating apparatus connected with a communication network comprises an electronic watermark-data embedding unit for embedding electronic watermark data in digital contents, an encryption unit for encrypting the digital contents embedded with electronic watermark data by an encryption key received from an encryption-key generating unit, and a decryption-key generating unit for generating a decryption key. A digital contents reproducing apparatus connected with the communication network comprises an electronic watermark data extraction unit for extracting electronic watermark data from encrypted digital contents embedded with electronic watermark data, and a decryption unit for decrypting the encrypted digital contents by a predetermined decryption key.

Digital contents generating apparatus and digital contents reproducing apparatus

A secure electronic watermark inserter. A picture analyzeranalyzes an input picture, and decides the insertion strength of the electronic water marking to be inserted, from one pixel of the input pictureto another, to output the insertion strength informationto an electronic watermark pattern inserterand to a shifting information pattern inserter. The electronic watermark pattern inserterinserts an electronic watermark pattern, stored in an electronic watermark pattern storage unit, into the input picture. The key information pattern inserterinserts the key information pattern, stored in the key information pattern storage unit, into a picture to be processed, having the inserted electronic watermark pattern, in accordance with the insertion strength information, to output the resulting picture.

An image analyzing unit analyzes an input image, and determines an embedding intensity level for an electronic watermark to be embedded in units of a pixel of the input image. The image analyzing unit then outputs the embedding intensity information to an electronic watermark pattern embedding unit and a displacement information pattern embedding unit, respectively. The electronic watermark pattern embedding unit embeds in the input image an electronic watermark pattern read from an electronic watermark pattern storage unit. At this time, the electronic watermark pattern is embedded based on the embedding intensity information. The displacement information pattern embedding unit embeds a displacement information pattern read from a displacement information pattern storage unit in the processed image having the electronic watermark pattern embedded therein. At this time, the displacement information pattern is embedded based on the embedding intensity information.

Electronic watermark embedding device and electronic watermark detecting device, and electronic watermark embedding method and electronic watermark detecting method implemented therein

An information insertion/detection system for detecting and inserting DCT coefficients in image signals includes a resolution analyzer for receiving image code data and outputting the image code data and image size information of the image code data, an insertion pattern determining unit for receiving the image code data and the image size information and outputting the image code data and pattern information, an information inserter for receiving the image code data and the pattern information and producing image code data by inserting information of the DCT coefficients into the image code data and a video analyzer for receiving the image code data and producing information of insertion strength of the DCT coefficients. The information is inserted in DCT coefficients so that the information can be detected by referring to an image size of MPEG data inputted to the system when the image data is converted into a reference image size.

Information insertion/detection system

A setting unit inputs compressed-image data, such as MPEG data or the like, a current picture number, sent from a compressed-image analyzer, within one GOP included in the MPEG data analyzed by the compressed-image analyzer, and a degree of coincidence sent from an additional data detector. A position determinator determines whether a picture number regarding a picture of a successive GOP which is to be detected includes additional data, and stores the determined picture number in a position data buffer. The determined picture number is transmitted to the position data determinator. The position determinator transmits an active signal to a switch, when the current picture number coincides with the picture number sent to the position data determinator. On the contrary, the position determinator sends an inactive signal to the switch when the current picture number does not coincide with the picture number sent to the position data determinator. In response to the signal at an active level, the switch controls the additional data detector to output a signal sent from the compressed-image analyzer.

Apparatus and method for detecting additional information

In an electronic watermarking device for inserting an electronic watermark into an original image, discrete cosine transformer carries out discrete cosine transform of a partial block of the original image, inserting unit inserts electronic watermarking data into an output of the discrete cosine transformer, inverse discrete cosine transformer carries out inverse discrete cosine transform of an output of the inserting unit, and coordinate converter which has coordinate conversion data carries out coordinate conversion of an output of the inverse discrete cosine transformer by the electronic watermarking data and the coordinate conversion data.

Electronic watermarking system capable of providing image data with high secrecy

Cation exchangers or chelating agents and process for the preparation thereof

Process for producing hydroxyalkyl (METH) acrylates

The present invention relates to a process for producing pure water having a total organic carbon content of not more than 200 ppb instantly after start of the operation of a high purity water system, comprising using as an ion exchange resin a specific strongly basic anion exchange resin and passing raw water through the high purity water system at a space velocity of not less than 20. The produced pure water is capable of producing tasteless and odorless pure water instantly after start of the operation of the high purity water system.

Process for producing pure water

A method for producing a spherical crosslinked copolymer, which comprises polymerizing a monofunctional addition-polymerizable monomer and at least 0.5% by weight of a polyfunctional addition-polymerizable monomer on the basis of the total weight of monomers by suspension polymerization in an aqueous medium in the presence of a radical polymerization initiator of the following formula (b) which has a decomposition temperature for a half-life period of 10 hours within a range of from 60.degree. to 120.degree. C. and which is capable of forming at least four radical initiating points per molecule by the decomposition:

Method for producing a spherical ion exchange resin

A method for producing an acrylonitrile crosslinked copolymer, which comprises copolymerizing, as polymerizable monomers, acrylonitrile, an alkyl ester of acrylic acid or methacrylic acid, an aliphatic or alicyclic crosslinkable unsaturated monomer having at least two allyl groups, and an aromatic crosslinkable polyunsaturated monomer, in the presence of from 10 to 45% by weight, based on the total amount of the polymerizable monomers, of an inert organic solvent having a specific gravity of at least 1.0.

Method for producing a spherical acrylonitrile crosslinked copolymer

A method for preparing an ultrapure water, from which impurities including inorganic salts, organic substances, fine particles and microorganisms are removed, by treatment including an ion exchange treatment, which comprises using an ion exchange resin comprising a copolymer of a polyvinyl compound and a monovinyl aromatic compound which may contain a monovinyl aliphatic compound, as the matrix, at least in a mixed bed ion exchange treatment of the ion exchange treatment, said ion exchange resin used comprising at least a regenerated form ion exchange resin A eluting an organic compound of a molecular weight of less than 3,000 but substantially not eluting an organic compound of a molecular weight of not less than 3,000 when dipped in a hot water at 50.degree. C. for 7 days.

Growing community of inventors

Tokyo, Japan

Junya Watanabe