Canon Kabushiki Kaisha

Atsushi Takasaki

Tetsuo Kanda

Toshihiko Myojo

Katsuo Saito

Kazuo Moritomo

Akira Torisawa

Norihiro Mochizuki

Ichiro Kato

Rie Suzuki

Tadashi Eguchi

Kotaro Akutsu

Koji Yukimasa

An antenna device comprises a cell structure including a plurality of cells made up of a multi-layer structure including a conductor layer and a dielectric layer, arranged in a matrix, and further comprises a first antenna element and a second antenna element arranged over the cell structure. The cells are configured to have artificial magnetic conductor effects corresponding to different frequency bands in a first direction and a second direction, and the first antenna element and the second antenna element are arranged parallel to the surface of the cell structure, respectively along the first direction and the second direction.

Antenna device

An electromagnetic band gap element is provided. In the electromagnetic band gap element, a first planar conductor and a second planar conductor are respectively formed on a first plane and a second plane which are parallel to each other, and a first linear conductor is formed on at least one third plane that is parallel to the first plane and the second plane and is located between the first plane and the second plane. The first planar conductor and the second planar conductor are connected via the first linear conductor.

Electromagnetic band gap element, electronic circuit, and conductor structure

A remote control device searches for an image data storing device and a printing device that can be used by a user, and notifies an image taking device of device information obtained as a result of this search. The image taking device searches for a device having a predetermined function in response to an instruction from the remote control device, and if a device included in the device information notified by the remote control device is found, transfers an image to the found device. Alternatively, the image taking device connects to a device notified by the remote control device, and sends the image to the notified device to perform printing or storing thereon.

Information processor and control method therefor

A device and method for controlling communication among a plurality of communication devices, the device and method including causing each of one or more candidate devices to which control rights of a network are transferable, from among the plurality of communication devices, to transmit a pseudo information signal, counting, for each of the one or more candidate devices, the number of communication devices from the plurality of communication devices having responded to the pseudo information signal, and determining a candidate device to which to transfer control rights of the network based on the number of communication devices from the plurality of communication devices having responded to the pseudo information signal.

Communication control device, method of determining communication control device, and storage medium for performing the method

This invention has as its object to reduce power consumption of dependent stations with low frequency of communication by controlling communications of the control station in a network. According to this invention, a control station communicating with dependent stations comprises a classification unit configured to classify the dependent stations connected to the control station into a plurality of groups; a first transmission unit configured to transmit first broadcast-frame to the dependent stations classified into first group; and a second transmission unit configured to transmit second broadcast-frame to the dependent stations classified into second group with lower frequency of communication compared to the first group, wherein the second transmission unit transmits the second broadcast-frame with a lower transmitting frequency compared to the first broadcast-frame transmitting frequency of the first transmission unit.

Control station, controlling method thereof and storage media

An imaging apparatus is wirelessly connected to a cellular phone, and additional information of image data is inputted on the cellular phone. When establishing the input, a file name is transmitted to the imaging apparatus from the cellular phone, and a file name of the image data stored on the imaging apparatus is rewritten. The imaging apparatus transmits the cellular phone a program for inputting the file name.

Imaging apparatus

A spreading code generator generates a spreading code specified by a matrix order and row number, which are matrix elements. The spreading code generator includes a repetitive division circuit for repeatedly dividing a row number by 2 a number of times equivalent to the matrix order; a reference-coefficient storage unit for storing reference coefficients obtained as a result of the repetitive division; a first code-sequence generating unit for generating a first code sequence by repeating inverted extension or non-inverted extension in dependence upon bits up a kth bit of the reference coefficient; a second code-sequence generating unit for generating a second code sequence by repeating inverted extension or non-inverted extension in dependence upon a (k&plus;1)th bit onward of the reference coefficient; first and second shift registers for storing the first and second code sequences, respectively, extended by the first and second code generating units, respectively; and an exclusive-OR circuit for taking the exclusive-OR of the outputs of the first and second registers.

Spreading code generator

A receiving apparatus includes a base-band conversion circuit, a synchronizing circuit/code generator and a demodulator. The base-band conversion circuit converts a received signal into a base-band signal. The synchronizing circuit/code generator detects a spread code included in the received signal to generate a plurality of spread codes in synchronization with the spread code included in the received signal. The demodulator uses the plurality of spread codes supplied by the synchronizing circuit/code generator to demodulate the base-band signal.

Spread spectrum receiving apparatus

There is provided a spread spectrum communication apparatus comprising a reception means for receiving a wide-band spread spectrum signal, a wave detection means for performing wave detection on a predetermined narrow-band signal within the reception signal received by the reception means, and a de-spread means for de-spreading the wide-band spread spectrum signal received by the reception means. Therefore, a desired one of a plurality of antennas to be used in a spread spectrum communication can be quickly and accurately selected, and also transmission power of the spread spectrum signal can be quickly and accurately controlled to have a desired value, whereby reliability of the spread spectrum communication can be increased.

Spread spectrum communication apparatus and method

In an apparatus for scanning an original image by directing light from an original irradiated with a light source to a photoelectric conversion device or a photosensitive member, the natural frequencies of a plurality of mirrors for reflecting the light from the original are set to different values to prevent the plurality of mirrors from vibrating at the same frequency.

Growing community of inventors

Tokyo, Japan

Atsushi Takasaki