Toda Kogyo Corporation

Sony Corporation

Ricoh Company, Ltd.

Mitsubishi Electric Corporation

Hirata Corporation

Tetsuya Kimura

Yoshiro Sato

Takanori Doi

Jun Koujima

Hidenobu Takemura

Yasuyuki Nagata

Yoji Okano

Kazumi Yamamoto

Tomohiro Dote

Satoshi Ohmae

Eiji Yokoyama

Keiichi Serizawa

Masato Yokoyama

Hiroshi Yoshizawa

Keiji Okamoto

Yasumasa Tomita

Yoichi Hirasawa

Makoto Sadai

Yasushi Otsuka

A ferrite sheet strip includes a strip shaped substrate and a plurality of ferrite sheet pieces provided on a surface of the substrate. The plurality of ferrite sheet pieces are aligned and spaced apart by a gap from one another along a longitudinal direction of the substrate. The gap extends at least partially so as not to be parallel to a lateral direction of the substrate.

Ferrite sheet strip, and antenna device and cable using ferrite sheet strip

Provided is an electric motor control device including: a speed controller configured to calculate an operation amount directed to an electric motor, and output the operation amount; a first filter configured to use the operation amount as an input to calculate a first correction amount in accordance with a first transfer function from the operation amount to the first correction amount, and output the first correction amount; a second filter configured to use a rotational speed as an input to calculate a second correction amount in accordance with the second transfer function from the rotational speed to the second correction amount, and output the second correction amount; and a control command calculator configured to add the first correction amount and the second correction amount to one another, to thereby calculate a control command, and output the control command.

Electric motor control device

An elevator door device includes a failure detection vane mounted on a safety shoe, and a failure detection roller to be brought into contact with the failure detection vane to turn on a shoe switch. The failure detection roller is mounted only on an OFF-failure detection floor. In a case where the shoe switch is turned off when a door is fully closed on the OFF-failure detection floor, it is determined that the safety shoe has OFF failure, and in a case where the shoe switch is turned on when the door is fully closed on an ON-failure detection floor, on which the failure detection roller is not mounted, it is determined that the safety shoe has ON failure.

Elevator door device

An information processing apparatus and method which allow a user to readily select, upon transmission of an electronic mail or upon uploading of image data, image data of a plurality of images to be attached to the electronic mail or image data to be transmitted. The user uses a cross key and a determination button of an inputting section of a camcorder: to operate an anchor on an image selection screen, to operate a page backward feeding button and to operate a page feeding button to select a thumbnail image displayed. In response to an operation by the user, the anchor is positioned on the side of the number of the thumbnail image designated by the user, and image data of the thumbnail image at which the anchor is positioned are selected.

Information processing apparatus and method

The present invention relates to an RF tag comprising a magnetic antenna for transmitting and receiving information using an electromagnetic induction method, and an IC mounted to the magnetic antenna, wherein the magnetic antenna comprises a magnetic core and a plurality of coils formed on the magnetic core; the coils each have an inductance Lsatisfying the specific relational formula, and are connected in parallel to each other in an electric circuit and disposed in series on the magnetic core; and a combined inductance Lof the magnetic antenna satisfies the specific relational formula. The RF tag of the present invention is used as a magnetic antenna for information communication using a magnetic field component which is capable of satisfying both reduction in size and improvement in communication sensitivity.

Magnetic antenna, and RF tag and board mounted with the RF tag

The present invention relates to a folded dipole antenna comprising a magnetic material comprising a hexagonal Z-type ferrite and/or a hexagonal Y-type ferrite as a main component in which a radiation element and a reflection element each having a folded dipole structure are disposed, and an RF tag comprising the folded dipole antenna and an IC chip connected to the folded dipole antenna. The RF tag according to the present invention has a smaller size than that of the conventional RF tags and is not susceptible to adverse influence from ambient environments, and can be operated at an UHF band or surrounding frequency bands thereof.

Folded dipole antenna and RF tag using the folded dipole antenna

The present invention relates to a magnetic antenna for information communication using a magnetic field component which is capable of satisfying both reduction in size and improvement in communication sensitivity. The magnetic antenna of the present invention is used for transmitting and receiving information using an electromagnetic induction method, and comprises a central core formed of a magnetic material and a non-magnetic material, a coil-shaped electrode material wound around the core, and an insulating layer formed on at least one outside surface of the core on which the coil-shaped electrode material is provided, in which the magnetic material is separated into two or more parts through the non-magnetic material when viewed in a section of the core which is perpendicular to a magnetic flux passing therethrough.

Magnetic antenna, board mounted with the same, and RF tag

The present invention relates to a molded ferrite sheet having opposing surfaces and a thickness in a range of 30 &#x3bc;m to 430 &#x3bc;m, at least one surface of said opposing surfaces having the following surface roughness characteristics (a) to (c):

Molded ferrite sheet, sintered ferrite substrate and antenna module

The present invention relates to a composite RF tag for transmitting and receiving information using an electromagnetic induction method, comprising a magnetic antenna mounted with an IC, and a resin layer formed around the magnetic antenna, wherein the magnetic antenna comprises a central core formed of a magnetic material and a coil-shaped electrode material disposed around the core. The RF tag according to the present invention comprises the magnetic antenna surrounded by the resin, and therefore can provide a composite magnetic RF tag which can minimize adverse influence by surrounding water or metals in view of maintenance of tools or parts to which the composite RF tag is mounted, and is free from occurrence of any failure or cracking.

Composite RF tag, and tool mounted with the composite RF tag

An electromagnetic noise suppression sheet obtained by using combination of a conductive carbon and spinel ferrite particles having a cumulative 50% volume particle diameter of 1 to 10 &#x3bc;m, can exhibit an excellent transmission attenuation power ratio and a reduced return loss in a near electromagnetic field, and is suitable for high-density mounting. The electromagnetic noise suppression sheet of the present invention can be produced by the process of the present invention which includes the steps of applying a coating material in which the conductive carbon and the spinel ferrite particles having a cumulative 50% volume particle diameter of 1 to 10 &#x3bc;m are dispersed, to form a coating film having a thickness of 10 to 100 &#x3bc;m after dried, and subjecting the resulting coating film to thermoforming under pressure.

Electromagnetic noise suppression sheet, flat cable for high-frequency signals, flexible printed circuit board, and process for producing the electromagnetic noise suppression sheet

A composite magnetic antenna for information communication utilizes a magnetic field component as well as a composite RF tag using the composite magnetic antenna, which can be embedded in metals while maintaining a sufficient communication sensitivity unlike conventional RF tags which are unusable in the metal embedding applications. The composite RF tag for transmitting and receiving information using an electromagnetic induction method includes a magnetic antenna on which an IC is mounted, and an insulating material and a metal material or a conductive material which are formed around the magnetic antenna. The magnetic antenna includes a central core formed of a magnetic material, and an electrode material formed into a coil around the central core. The insulating material is formed around the magnetic antenna except for one longitudinal end of the coil of the magnetic antenna. The metal material or the conductive material is formed on an outside of the insulating material.

Composite magnetic antenna and RF tag, and metal part and metal tool on which the composite magnetic antenna or RF tag is installed

The invention relates to an information processing apparatus and method which allow a user to readily select, upon transmission of an electronic mail or upon uploading of image data, image data of a plurality of images to be attached to the electronic mail or image data to be transmitted. The user uses a cross key and a determination button of an inputting section of a camcorder to operate an anchoron an image selection screento operate a page backward feeding buttonand a page feeding buttonto select a thumbnail image displayed. In response to an operation of the user, the anchoris positioned on the left side of the number of the thumbnail image designated by the user, and image data of the thumbnail image at which the anchoris positioned are selected. At a left upper portion of the selected thumbnail image, a check mark representative of such selection is displayed. When the user wants to end the image selection operation, it operates the anchor to operate a determination button. The present invention can be applied to a camcorder.

Growing community of inventors

Tokyo, Japan

Tetsuya Kimura