Hitachi, Ltd.

Ricoh Company, Ltd.

Nippon Steel & Sumitomo Metal Corporation

Hitachi Systems, Ltd.

Kenta Takahashi

Masahiro Mimura

Shinji Hirata

Yosuke Kaga

Masakazu Fujio

Takao Murakami

Yoshiaki Isobe

Daisuke Hasebe

Yukihiro Asano

Tatsuroh Watanabe

Hideitsu Hino

Kazuyoshi Matsumoto

Takeyuki Kobayashi

Ken Naganuma

Masakatsu Nishigaki

Nobuyuki Yamamoto

Kazuo Takaragi

Takashi Watanabe

Toshihiro Okamoto

Hiroaki Takatsuki

Yuji Yamamoto

Shotaro Takeuchi

Takamasa Matsumoto

Youhei Niitsuma

Osamu Takata

Takayuki Fujiwara

Tetsuya Hashimoto

Kenji Hayasaka

Yuta Kobayashi

Shingo Masaoka

Kentarou Oonishi

Masahiko Hisada

Naoki Ikawa

Daisuke Katsumata

Naohiro Suzuki

Hironobu Murai

Yukie Motomiya

Wataru Nakamura

Daiki Marumo

Shinya Iguchi

Hitoshi Murakoshi

Tooru Sugimoto

Naoto Murayama

Nobuhiro Ihori

Atsushi Ikeda

Naoto Miyao

Yuta Yoneyama

Eisei Honbu

Yuichi Mikuni

Yoichi Shibata

Kousuke Shindou

Yoshiko Yasumura

Takayuki Habuchi

Non Kawana

An authentication apparatus holds: a combination of a concealment template generated from a secret key and biometric information through use of biometric cryptography and encrypted identity verification information obtained by encrypting identity verification information through use of the secret key; and biometric information on a user, and is configured to: extract the secret key from the concealment template through use of the biometric information on the user; acquire the identity verification information by decrypting the encrypted identity verification information through use of the extracted secret key; and verify identity of the user based on the acquired identity verification information.

Authentication apparatus and authentication method

A first computer, in data registration processing: determines a type of biometric information for encryption with which the data is to be encrypted; acquires the determined type of biometric information for encryption from a user of the first computer; generates, from each piece of the acquired biometric information for encryption, a public key based on a predetermined algorithm; transmits the public key to a second computer; and transmits the data encrypted with the public key to the third computer, the first computer, in data presentation processing: acquires the encrypted data from a third computer; acquires the determined type of biometric information for decryption from the user of the first computer; generates, from each piece of the acquired biometric information for decryption, a private key based on the predetermined algorithm; decrypts the encrypted data with use of the private key; and presents each piece of the decrypted registered data.

Data management system, data management method, and non-transitory computer readable medium

A liquid discharge apparatus includes multiple heads configured to respectively discharge different types of liquids, and multiple liquid containers configured to respectively contain the different types of liquids to be respectively supplied to the multiple heads. Each of the multiple liquid containers includes a first fitting part fittable to each of: a second fitting part of corresponding one of multiple refill bottles respectively containing the different types of liquids to be respectively supplied to the multiple liquid containers; and a third fitting part of a cleaning bottle containing a cleaning liquid to be commonly supplied to each of the multiple liquid containers.

Liquid discharge apparatus, liquid container, and cleaning bottle

A key generation apparatus for accomplishing high precision authentication in biometric encryption and biometric signing based on feature vectors in a high-dimensional Euclidean space, the apparatus: holds a first feature vector indicating a feature of first biometric information, and a parameter for identifying one arrangement out of a sphere packing arrangement with a density less than 1 and more than a predetermined value, or a sphere covering arrangement with a density equal to or more than 1 and less than a predetermined value, identifies one arrangement out of the sphere packing arrangement or the sphere covering arrangement based on the parameter; selects a first point included in the identified one arrangement; generates a first key by predetermined first conversion on the first point; and generates, based on the first feature vector and the first point, a template associated with the first biometric information.

Key generation apparatus, key utilization apparatus, and key generation method

A liquid discharge apparatus includes a head configured to discharge a liquid, and a liquid container configured to contain the liquid to be supplied to the head. The liquid container includes an inlet from which the liquid is supplied to the liquid container, a first lid configured to cover and openably close the inlet, the first lid having a first fitting part fittable to a first key detachably attached to a refill bottle containing the liquid.

Liquid discharge apparatus, liquid container, and refill container

A liquid discharge apparatus, a method of discharging liquid, and a recording medium storing a program for causing a computer to execute the method. The liquid discharge apparatus and the method includes obtaining image data to be printed, performing dithering to achieve masking and halftone processing on the image data to generate print data, and controlling movement of a discharge head and discharge of ink based on the print data. The controlling includes increasing a ratio of a number of ink dots continuously discharged onto a recording medium in a grayscale on a shadow side to a total number of ink dots discharged onto the recording medium in one-time scanning by the discharge head in one line to be greater than a ratio of a number of ink dots continuously discharged onto the recording medium in a grayscale on a highlight side to the total number of ink dots.

Liquid discharge apparatus, liquid discharging method, and recording medium storing program for controlling banding and granularity

A maintenance device configured to maintain a head configured to discharge a first liquid, the maintenance device includes a cap configured to contact a nozzle surface of the head, a storage configured to store a second liquid to be supplied into the cap, a supply device configured to supply the second liquid into the cap, a receptacle configured to receive the second liquid supplied into and overflown from the cap, and a collection device configured to collect the second liquid received by the receptacle.

Maintenance device and liquid discharge apparatus

An electronic device includes an open-close detector configured to detect an open-close state indicating whether an optical path open-close device of a film camera is open or closed, a displacement detector configured to detect a displacement of a movable portion of the film camera interlocked with a movement of an operation portion of the film camera, and control circuitry. In response to a detection result of the displacement detector, the control circuitry selects a measurement mode for measuring an open time during which the optical path open-close device is open, from a plurality of operation modes of the electronic device. In the measurement mode, the control circuitry measures the open time based on the open-close state detected by the open-close detector.

Electronic device, imaging device, and imaging apparatus

A computer system comprising a computer, wherein the computer is configured to: generate feature data based on biometric information obtained from a user; generate error feature data indicating an error in the biometric information and stationary feature data indicating part other than the error in the biometric information, based on the feature data; generate a template based on the error feature data of the biometric information; generate first confidential information used for cryptographic process based on the stationary feature data of the biometric information, and generate first verification information based on the first confidential information.

Computer system, verification method of confidential information, and computer

A biometric signature system holds a first template indicating a result of transforming, by predetermined transformation, first biometric information acquired from a predetermined part of a user; and a second template indicating a result of transforming, by predetermined one-way transformation, second biometric information acquired from the predetermined part of the user, identifies a parameter for which a similarity between the first template of the person to be authenticated corrected, generates a second template of the person to be authenticated from each piece of corrected second biometric information, and determines whether authentication of the person to be authenticated is successful by comparing each generated second template with the second template.

Biometric signature system and biometric signature method

As a technology for preventing the leaking of confidential information more properly, provided is a work recording apparatus including: a recording control unit configured to record a work situation; a position detection unit configured to detect a position; and a usable function restriction unit configured to specify an applicable predetermined state through use of the position detected by the position detection unit and restrict a part or all of functions of the recording control unit based on the specified applicable predetermined state.

Work recording apparatus, system, program, and method preventing confidential information leaks

Provided is a signature verification system comprising: a signature terminal including a biometric information acquisition unit for acquiring biometric information of a user, a public template certificate generation unit for generating a public template certificate by subjecting the biometric information to predetermined processing, a key pair generation unit for generating a pair of a secret key and a public key, and a public key certificate generation unit for generating a public key certificate by providing a biometric signature to the public key with the biometric information used as a key; and a verification terminal including a public key certificate verification unit for receiving a transaction including the public template certificate, the public key certificate, and a signature to verify the validity of the public key certificate using the public template certificate, and a signature verification unit for verifying the signature using the public key certificate.

Signature verification system, signature verification method, and storage medium

A roll device includes a feeding roll in which a web is wound, a winding roll configured to wind the web fed from the feeding roll, and a partition disposed between an outermost winding portion of the web fed from the feeding roll and an inner winding portion of the web overlapped with the outermost winding portion.

Roll device, roll apparatus, head maintenance device, and liquid discharge apparatus

This biometric signature system comprises: a biometric certificate storage module that stores a biometric certificate generated on the basis of a user's biometric information; a biometric information acquisition module that acquires new biometric information from the user; a biometric certificate generation module that generates a new biometric certificate on the basis of the new biometric information; a biometric signature generation module that assigns a biometric signature to the new biometric certificate on the basis of the new biometric information; a biometric signature verification module that verifies the biometric signature using the biometric certificate stored in the biometric certificate storage module; and a biometric certificate registration module that registers the new biometric certificate in the biometric certificate storage module if verification of the biometric signature was successful.

Biometric signature system and biometric certificate registration method

A biometric authentication system has a terminal which extracts and encodes feature data for authentication from acquired biometric information, and which transmits the encoded feature data for authentication. The system has a DB for storing encrypted authentication information, a search unit which searches for encrypted authentication information included in the DB, and a decryption unit which decrypts the encrypted authentication information searched for using encoded feature data for authentication as a decryption key. Accordingly, a user is uniquely identified using the obtained authentication information. Further, a processing unit performs authentication response processing with respect to the identified user, based on authentication information obtained by decryption. Thus, authentication is implemented without limiting user and terminal combinations, without reconfiguring a service server, and without requiring a user to enter an ID or present a card at the terminal, when a user utilizes existing services from one or plural terminals.

1:N biometric authentication, encryption, signature system

Growing community of inventors

Tokyo, Japan

Kenta Takahashi