Canon Kabushiki Kaisha

Fujitsu Corporation

Mitsubishi Kasei Corporation

Kddi Corporation

National Institute of Information and Communications Technology, Incorporated

Mitsubishi Chemical Industries Limited

Nikken Chemicals Co., Ltd.

Communication and Broadcasting International Laboratory Co., Ltd.

Isao Nakazawa

Kazunori Yamanaka

Yasuhiko Shiomi

Masafumi Shigaki

Takayuki Tsuboi

Michio Yoshida

Hiroshi Maeno

Yasuyuki Yamada

Yoshiaki Kobayashi

Hiroyo Ogawa

Toshihiro Maeda

Tatsuaki Hamai

Kaoru Murakami

Ryoichi Shimada

Toshikazu Youkai

Hiroyuki Yazuka

Koichi Washisu

Manabu Kai

Shuichi Tamura

Yasuhisa Sato

Tatsuo Fujisaki

Masanori Ohtsuka

Akihiko Akasegawa

Nobuhiro Ago

Akira Kamata

Tadashi Hishida

Yoshihiro Harunari

Osamu Morita

Tetsuya Hirota

Hiroshi Takamisawa

Yasuhik Shiomi

Takashi Kombu

Tatsuo Fjuisaki

The signal processing-system using singularity is provided which is excellent in determination of the original signal against the degradation environment of an operating condition and robust to the signal degradation of noise, can generate the signal suitable to regeneration of the original signal, and has regeneration means to regenerate the original signal, wherein the system comprises: an original signal converter of the signal processing-system which converts the original signal contained in the inputted signal into the signal containing singular points by using the specific function, the converter outputting the signal containing singular points; an original signal regenerator which converts the incoming signals containing singular points into signals having singular points by the specific signal processing, the regenerator extracting the undesired-signal component from the signals having singular points; and a regenerator which regenerates the original signal by carrying out the operation of the generated undesired-signal and the above-mentioned signal-containing-singular-points, and outputs the regenerated signal.

Signal processing-system using singularity, and its information memory medium

An image pickup apparatus includes a focus detector that utilizes a phase detection method, an image pickup device, an optical path switch configured to switch a path of light from an object between a first optical path used to lead the light to the focus detector and a second optical path used to lead the light to the image pickup device, a face detector configured to detect a face of the object from the image data, and a controller configured to provide such a control that the optical path switch can set the second optical path after the optical path switch sets the first optical path and the focus detector detects the on-focus state using the phase difference method, and allows the face detector to detect the face of the object after the optical path switch can set the second optical path.

Image pickup apparatus having focusing function and its control method

In a package mounting structure for mounting a package on a case, wherein the package internally incorporates at least one of a high-frequency transistor, MIC and MMIC used in the microwave to millimeter-wave band, and a base thereof is formed of metal and serves as ground, an electrically conductive sheet having excellent thermal conductivity and exhibiting restorability and having a size identical with that of the base of the package is laid on the case at a package-bearing location, the package and sheet are fastened together by two or more screws, and the sheet is mounted on the case while it is pressed by a pressing force of 10 N/cmor greater owing to fastening.

Mounting device for high frequency microwave devices

A focus detection apparatus comprising a focus detection unit adapted to employ a photoelectric conversion element to detect a relative positional relationship between a pair of object images corresponding to a focus detection field; and wherein the focus detection unit are switchable between a first mode of operation in which such an object image corresponding to a focus detection field is detected by using a first number of areas of the photoelectric conversion element, and a second mode of operation in which such an object image corresponding to a focus detection field is detected by using a second number of areas of the photoelectric conversion element, different from the first number.

Focus detection apparatus for detecting a relative positional relationship between a pair of object images

An antenna coupling module for electromagnetically coupling a planar antenna and a planar type oxide superconductive high frequency circuit not reducing the antenna effective area and sharply reducing the signal loss due to coupling, comprised of a planar antenna and a substrate forming a planar superconductive high frequency circuit arranged in a perpendicular direction with respect to the element surface of the planar antenna and having the planar antenna and the superconductive high frequency circuit electromagnetically coupled.

Antenna coupling module

An antenna device includes a plane-type antenna element, a heat insulation container for blocking heat entering from the outside, the heat insulation container having a radio-wave window allowing a radio wave to pass therethrough, and housing the plane-type antenna element, a waveguide housed in the heat insulation container and arranged between the radio-wave window and an antenna pattern formation surface of the plane-type antenna element, and cooling means for cooling the plane-type antenna element. The waveguide is shaped and dimensioned so that the directivity of the plane-type antenna element is enhanced, and a superconducting film is used for the antenna pattern of the plane-type antenna element.

Antenna device, radio-wave receiver and radio-wave transmitter

A dielectric waveguide which comprises a first single crystal magnesium oxide block having a surface of face (001), (100) or (010) and a first copper oxide superconducting film formed on the above-described surface in a c-axis crystal orientation perpendicular to the surface, and a method of production thereof are provided.

Dielectric waveguide having a 45&#xb0; face and method of production thereof

A line quality characteristic evaluation system for estimating a line quality characteristic under an interference environment including nonlinear interference for a wireless communication system including at least one interfering wireless line, including a line quality estimating unit estimating the line quality of a wireless communication line under a nonlinear interference wireless line in an area in which wireless communication lines and interfering wireless lines are present together based on nonlinear distortion included by all wireless lines and expressed by an intercept point input level (IIP), a reception equivalent band limitation expressed by attenuation of the intercept point input level (IIP), reception side thermal noise of the wireless communication lines, and leakage power from other interfering wireless lines leaking into the reception equivalent band.

Line quality characteristic evaluation system

An interference measurement and evaluation system for accurately estimating an interference characteristic of a receiving side including nonlinear interference for a wireless communications system, having a transmission signal for wireless communication and an interference signal between an interfered side and the receiving side, provided with a nonlinear interfering side giving an interference signal having a level unable to be neglected compared with the level of the modulated carrier transmitted from the interfered side, and provided with an interference characteristic estimating means for estimating an interference characteristic including a nonlinear interference characteristic possessed by the receiving side in accordance with a received signal level and a received level when a nonlinear interference theoretical curve given in relation with the line quality satisfies a predetermined line quality.

Interference measurement and evaluation system

A monitoring system for high-frequency circuits which minimizes the insertion loss of additional monitoring circuits while requiring only a small space. An input coupler is placed at the input of a high-frequency circuit whose frequency response is to be monitored. The input coupler has a space where a given high-frequency probing signal can propagate, and it combines this propagating signal with a given electrical input signal. The combined signal is processed by the high-frequency circuit, and the resulting signal is supplied to an output coupler. The output coupler has a space for propagation of a high-frequency probing signal component contained in the received combined signal. The output coupler extracts this propagating signal component for the purpose of monitoring.

System and method for monitoring high-frequency circuits

A lens barrier device for a camera includes a main blade member located on a plane approximately perpendicular to an optical axis of a photo-taking lens of the camera and arranged to perform opening and closing actions by moving on the plane approximately perpendicular to the optical axis, an auxiliary blade member located on one and the same plane as the main blade member and arranged to perform opening and closing actions by moving on one and the same plane as the main blade member, and a driving part arranged to drive the main blade member to perform the opening and closing actions, wherein the auxiliary blade member is arranged to perform the opening and closing actions by being pushed by the main blade member.

Lens barrier device for camera

An image stabilizing device removably mountable on a camera or other optical apparatus includes an image stabilizer for accomplishing image stabilization of the camera, a detector for detecting the operative state of the camera, and a controller responsive to the detector to control the operation of said image stabilizer. The detector detects the presence or absence of an information signal and the controller acts diversely dependent on the detections.

Image stabilizing device operable responsively to a state of optical apparatus using the same

An apparatus for measuring multipath propagation characteristics receives a plurality of transmitted waves propagated over a plurality of different propagation paths and subjected to multipath fading over the propagation paths, and measures multipath propagation characteristics with respect to those propagation paths based on the received waves. The multipath propagation characteristics can be measured relative to a plurality of propagation path systems using the same frequency band. The apparatus for measuring multipath propagation characteristics comprises a plurality of transmitters located in different spatial positions, respectively, and a receiver for receiving a plurality of waves transmitted from the transmitters while the receiver is moving. The transmitters generate respective waves to be transmitted that each comprise a plurality of discrete spectral components which are arranged in the frequency domain such that they do not overlap each other in the same frequency band. The receiver simultaneously receives the waves which have been transmitted from the respective transmitters and each propagated over a plurality of different propagation routes or paths while being subjected to multipath fading, and measures multipath propagation characteristics relative to the propagation paths based on the received waves.

Apparatus for measuring multipath propagation characteristics

A moving body position detecting device is provided with at least three contacts and at least three conductors which are in contact respectively with the three contacts, connected in series to each other and disposed in parallel to each other, for detecting the position of a moving body according to the relative positional relationship between the three contacts and the three conductors.

Growing community of inventors

Kanagawa, Japan

Isao Nakazawa