Nec Corporation

Nippon Telegraph and Telephone Corporation

Sharp Kabushiki Kaisha Corporation

Ntt Docomo, Inc.

Other

Sharp K.k.

Nec Electronics Corporation

Hirotaka Nakano

Tsuneaki Iwano

Toshiaki Sugimura

Keiichi Hibi

Osamu Nakamura

Jiro Nakabayashi

Takashi Oshima

Tsuneko Kura

Nobuyuki Ema

Youji Kanada

Masahiro Hashimoto

Tadashi Uchiumi

Masaaki Fukumoto

Masaji Katagiri

Koji Manabe

Osamu Hakamura

Takeshi Ikeda

Akira Suzuki

Hiroyuki Ito

Hiroshi Inaba

Hiroyuki Manabe

Takeshi Makiyama

Noritaka Koizumi

Toshihiro Yasuda

Shiro Fujihara

Akira Hiraiwa

Takahiro Matsumura

Toshihiro Uota

Yoshihiro Ohara

Yasuhiko Okuhara

Akihiro Asahina

Shoichiro Ishigaki

Fumihiro Okazaki

Masahiro Tatsumi

Yoshihiro Nakagawa

Tadashi Uchimi

Toshiaki Chai

Tsutomu Akasaka

An electric field generated by another electric field communications apparatus reaches electric field sensor ES. Electric field sensor ES outputs an electric signal in response to the changes in the electric field. The electric field that reaches electric field sensor ES enters a return path of the electric field communications apparatus that is a source of the electric field. By locating electric field sensor ES between receiver main electrode ERB and receiver return electrode ERG, electric field intensity at the location where electric field sensor ES is positioned. Therefore, sensitivity of the changes in electric field for electric field communications apparatus TRX can be improved.

Electronic communications system, apparatus and electrode layout method

A mobile terminal capable of measuring a biological signal is provided. The terminal comprises a terminal body; an electrode for human body earth or system reference, placed on an outer surface of the terminal body so as to be contactable with the skin of a user of the mobile terminal; and differential electrodes. The measured biological signals include an electromyography signal and an electroencephalogram signal. The differential electrodes can be external to the terminal body and be connected via lead lines to the terminal body.

Mobile terminal capable of measuring a biological signal

A wireless telecommunications unit is attachable to and detachable from an external unit such as a personal computer, and has a wireless telecommunications apparatus, a microcontroller, and a memory mechanism. The wireless telecommunications apparatus has an identification number for wireless telecommunications, and is for carrying out wireless telecommunications with the outside. The microcontroller is for controlling the wireless telecommunications apparatus and the memory mechanism, it has control functions for the external unit to carry out telecommunications with the outside in accordance with the wireless telecommunications apparatus, to use the memory mechanism as a file system of a designated operating system, when the wireless telecommunications unit is connected to the external unit, and a control function for the wireless telecommunications apparatus to carry out telecommunications using the memory mechanism in accordance with instructions from the external unit or generated in the microcontroller.

Wireless telecommunications unit attachable to and detachable from an external unit

A device which is capable of storing moving picture data received from each terminal and providing each terminal with video information to be reproducible by rapidly forwarding or reversing at any desired speed independent of usable terminals. A video storage type communication devicewith a receiving portionand a transmitting portiontransmits and receives video data over a communication networkto and from each terminaln. A coded video data received from terminalsn is stored as it is in a first storage portionand, at the same time, the data converted into specially reproducible video information is stored in the second storage portionAt the time of reproducing, the reproduction control portioncontrols the reproduction selector switchto obtain the video data from the first storage portionor the second storage portionchanging the reproduction mode from ordinary to the rapid forwarding/reversing and vice versa. The specially reproducible video generating portionsuccessively restores coded video data received through the receiving portionencodes again the restored data by intraframe, interframe or still-picture coding method to generate video information to be reproducible in special mode such as reproduction by rapid forwarding or reversing.

Video storage type communication device

In a system of manufacturing a semiconductor integrated circuit, a client, a data-managing center, a designing center, and a manufacturing center are connected together via the Internet. The data-managing center has a cost/number-of-days database, a reservation status database, and a design/manufacture status database. Each of the centers uses information contained in the databases of the data-managing center, performs two-way communication with the client, and thereby progresses the production of the semiconductor integrated circuit.

System of manufacturing semiconductor integrated circuit by having a client connected to a manufacturer via two-way communication

There are provided a device and method for enabling entry of handwritten data, such as a signature, without use of an electronic tablet. In step S-, a user affixes a signature by means of moving a pen devicein midair. In step S-, camera meansphotographs the pen deviceand outputs the resultant image data. In step S-, coordinate computation meansdetermines coordinates of a pen tip of the pen meanson a screen on the basis of the image data (motion picture data), thereby determining signature data. In step S-, comparison verification meanscompares and verifies the thus-determined signature data with reference data. If a similarity exists between the signature data and the reference data, there is output an authentication result showing 'authentication of verification.' Thus, personal identification can be effected on the basis of the signature data written by the user in midair.

Handwritten data input device and method, and authenticating device and method

In an MPEG data processing apparatus comprising a particular picture searching section which comprises a particular picture detector for detecting a current particular picture datum in MPEG video data, a particular picture interval holding section holds, as an estimated interval, an interval between the current particular picture datum and a predicted next particular picture. A next particular picture address calculating section calculates the predicted next particular picture on the basis of the estimated interval and a current address on reception of the estimated interval to produce the estimated address as a calculated address. A address controller accesses a memory at the calculated address to make the memory read a datum for the calculated address in a buffer.

MPEG data processing apparatus comprising an arrangement for estimating an interval between particular picture data

The MPEG video data stored in a video memory is successively written to a buffer in accordance with an address held in an address register . When I picture is detected from the data read from the buffer, the information is fed to an I picture interval holder . The I picture interval holder holds an address register value when the previous I picture is detected, subtracts the previous address register value from the present address register value when the present I picture is detected, and holds the value (interval between the previous I picture address and the present I picture address). A next I picture address calculator adds the interval obtained in the I picture interval holder to the present address value stored in the address register , subtracts a predetermined value from the calculated value, and predicts the next I picture address.

I picture search apparatus and method

One clock is selected from a plurality of clocks by a selector through programming. Clock lines are connected to the outputs of clock buffers connected to the selector. Programmable connector elements are connected onto these lines, and flip-flops and regulation loads are connected thereto. The programmable connector elements are selected through programming. This construction can realize a clock distributing circuit in a programmable logic device, which can suppress an increase in skew and can reduce a clock line wiring area.

Clock distributing circuit in programmable logic device

The present invention relates to an electronic watermark burying device that does not bury the same electronic watermark data in a superimposing mode. An electronic watermark insertion device comprises discrete cosine transforming means for subjecting an input image into a discrete cosine transformation; electronic watermark burying means for inserting electronic watermark data to data transformed by the discrete cosine transforming means; electronic watermark detecting means for detecting whether or not the electronic watermark data to be inserted by the electronic watermark burying means has been already inserted into the input image; and selecting means for selecting the output data from the discrete cosine transforming means when the electronic watermark detecting means detects that the electronic watermark data has been already inserted into the input image or for selecting output data from the electronic watermark burying means when the electronic watermark detecting means does not detect that the electronic watermark data has been not inserted into the input image; and means for subjecting data selected by the selecting means into an inverse discrete cosine transformation.

Electronic watermark insertion device

A fault detection system applies known data to the input of a circuit being inspected for faults and examines the circuit output for expected results. Faults in a circuit are detected by receiving unexpected results at the circuit output. A fault detection circuit provides a fault signal that is enabled only when a reset line is activated. Activation of the reset line also prompts the known data to be applied to the circuit input. The known data can be derived from memory storage units that provide a known output upon activation of the reset signal. Accordingly, the system does not require parity bits or excessive hardware to provide fault detection for almost all modes of failure in a given circuit.

Compact fault detecting system capable of detecting fault without omission

An image data encoding system is disclosed, that comprises a discrete cosine transforming means for discrete-cosine transforming the original image, an electronic watermark data embedding means for embedding the electronic watermark data in the data that has been transformed by the discrete cosine transforming means, and a data selecting means for selecting the output signal of the discrete cosine transforming means or the output signal of the electronic watermark data embedding means. Another image data encoding system is also disclosed, that comprises an electronic watermark embedding means for embedding electronic watermark data selected from a plurality of types of electronic watermark data to the digital image data, wherein at least one of the plurality of types of electronic watermark data is predetermined electronic watermark data that does not affect the digital image data even if the electronic watermark data is embedded in the digital image data.

Image data encoding system and image inputting apparatus

An electronic watermark system invisibly embeds watermark information into original image data and the watermarked image data is transferred to a first medium. At the same time. the embedded watermark information is transferred to a second mediums. When a medium questioned is found, its watermark information can be easily identified by searching the second medium. Alternatively, the watermarked image data and the embedded watermark information are transferred to different storage areas of the same medium, respectively.

Electronic watermark system

A device which is capable of storing moving picture data received from each terminal and providing each terminal with video information to be reproducible by rapidly forwarding or reversing at any desired speed independent of usable terminals. A video storage type communication device with a receiving portion and a transmitting portion transmits and receives video data over a communication network to and from each terminal -n. A coded video data received from terminals -n is stored as it is in a first storage portion and, at the same time, the data converted into specially reproducible video information is stored in the second storage portion At the time of reproducing, the reproduction control portion controls the reproduction selector switch to obtain the video data from the first storage portion or the second storage portion changing the reproduction mode from ordinary to the rapid forwarding/reversing and vice versa. The specially reproducible video generating portion successively restores coded video data received through the receiving portion encodes again the restored data by intraframe, interframe or still-picture coding method to generate video information to be reproducible in special mode such as reproduction by rapid forwarding or reversing.

An image data encoding system has a discrete cosine transformer for discrete cosine transforming the original image, an electronic watermark data embedding circuit for embedding the electronic watermark data in the data that has been transformed by the discrete cosine transformer, and a data selector for selecting the output signal of the discrete cosine transformer or the output signal of the electronic watermark data embedding circuit. Another image data encoding system has an electronic watermark embedding circuit for embedding electronic watermark data selected from a plurality of types of electronic watermark data to the digital image data, wherein at least one of the plurality of types of electronic watermark data is predetermined electronic watermark data that does not affect the digital image data even if the electronic watermark data is embedded in the digital image data.

Growing community of inventors

Tokyo, Japan

Hirotaka Nakano