Kyocera Corporation

Katsutoshi Kawai

Takeo Miyata

Masashi Iwami

Hiroki Okada

Eri Uchida

Hiroyuki Minagawa

Yukitoshi Kanayama

Mitsuo Ono

Yoshiteru Takayama

Atsushi Hasebe

Tomoyuki Nakasha

Yuuya Tanaka

An electronic device according to one aspect includes: a transmitter configured to transmit a transmission signal; a receiver configured to receive a prescribed signal; an environment estimator configured to be able to estimate a radio wave propagation environment from the received prescribed signal; a person detector configured to detect the presence or absence of a person in the radio wave propagation environment; and a controller configured to reduce a side lobe of a transmission signal when the radio wave propagation environment is determined to be a multipath-rich environment in which reflected waves occur and a person is detected from an estimation result of the environment estimator and a detection result of the person detector.

Electronic device, control method, and control program

An electromagnetic wave detection apparatus comprises an irradiator configured to emit electromagnetic waves; a switch comprising an action surface with a plurality of pixels disposed thereon, the switch being configured to switch each pixel between a first state of causing electromagnetic waves, including reflected waves, from an object, of electromagnetic waves irradiated from the irradiator, incident on the action surface to travel in a first direction and a second state of causing the electromagnetic waves incident on the action surface to travel in a second direction; a first detector configured to detect the electromagnetic waves that travel in the first direction; and a second detector configured to detect the electromagnetic waves that travel in the second direction. Also, the switch is configured to switch each of the plurality of pixels between the first and second states according to an irradiation region of the electromagnetic waves emitted from the irradiator.

Electromagnetic wave detection apparatus, program, and information acquisition system

An electromagnetic wave detection apparatus () includes a switch (), a first detector (), and a second detector (). The switch () includes an action surface (as) with a plurality of pixels (px) disposed thereon. The switch () is configured to switch each pixel (px) between the first state and the second state. In the first state, the pixels (px) cause electromagnetic waves incident on the action surface (as) to travel in a first direction (d). In the second state, the pixels (px) cause the electromagnetic waves incident on the action surface (as) to travel in a second direction (d). The first detector () detects the electromagnetic waves that travel in the first direction (d). The second detector () detects the electromagnetic waves that travel in the second direction (d).

An electromagnetic wave detection apparatus () includes an irradiator (), a first detector (), a memory (), and a controller (). The irradiator () irradiates electromagnetic waves. The first detector () includes detection elements. The detection elements detect, by irradiation position, reflected waves of the electromagnetic waves irradiated onto an object (ob). The memory () stores related information. The related information is information associating any two of the emission direction of the electromagnetic waves and elements defining two points on a path. The path refers to a path of the electromagnetic waves emitted from the irradiator () to the first detector () via the object (ob). The controller () updates the related information based on the emission direction of the electromagnetic waves and the position of the detection element, among the detection elements, that detects the reflected waves of the electromagnetic waves.

Electromagnetic wave detection apparatus, program, and electromagnetic wave detection system

An electromagnetic wave detection apparatus () includes an irradiator (), a first detector (), a memory (), and a controller (). The irradiator () irradiates electromagnetic waves. The first detector () includes detection elements. The detection elements detect, by irradiation position, reflected waves of the electromagnetic waves irradiated on an object (ob). The memory () stores first related information including an emission direction of the emitted electromagnetic waves. The controller () updates the first related information based on the position of the detection element, among the detection elements, that detects the reflected waves of the electromagnetic waves.

An electromagnetic wave detection apparatus () includes an irradiator (), a first detector (), a propagation unit (), a memory (), and a controller (). The irradiator () irradiates electromagnetic waves. The first detector () detects reflected waves of the electromagnetic waves irradiated onto an object (ob). The propagation unit () includes propagation elements (px). By irradiation position of the electromagnetic waves irradiated onto the object (ob), the propagation elements (px) switch between propagating and not propagating the reflected waves towards the first detector (). The memory () stores information related to the emission direction of the electromagnetic waves. The controller () updates the information related to the emission direction based on the position of the propagation element (px) that is propagating the reflected waves toward the first detector () when the first detector () detects the reflected waves.

An electromagnetic wave detection apparatus () includes an irradiator (), a first detector (), a propagation unit (), a memory (), and a controller (). The irradiator () irradiates electromagnetic waves. The first detector () detects reflected waves of the electromagnetic waves irradiated onto an object (ob). The propagation unit () includes propagation elements (px). By irradiation position of the electromagnetic waves irradiated onto the object (ob), the propagation elements (px) switch between propagating and not propagating the reflected waves of the electromagnetic waves towards the first detector (). The memory () stores related information. The controller () updates the related information based on the position of the propagation element (px) that is propagating the reflected waves toward the first detector () when the first detector () detects the reflected waves.

Electromagnetic wave detection apparatus, program, and electromagnetic wave detection system comprising a controller to update related information associating an emission direction and two elements defining two points on a path of electromagnetic waves

The quality of signals during SDMA is raised. In an uplink, a signal processing unit receives signals respectively from a plurality of terminal apparatuses which have been multiple-accessed by division of time. It derives receiving channel characteristics corresponding to the plurality of terminal apparatuses, respectively, for each time slot. In a downlink, the signal processing unit derives transmitting channel characteristics from the receiving channel characteristics derived and, based on the transmitting channel characteristics derived, it transmits signals respectively to the plurality of terminal apparatuses to which SDMA has been performed. In the downlink, a control unit allocates channels to the plurality of terminal apparatuses, respectively, in a manner that the plurality of terminal apparatuses are multiple-accessed by SDMA; and in the uplink it allocates channels to the plurality of terminal apparatuses, respectively, in a manner that the plurality of terminal apparatuses are multiple-accessed by TDMA.

Channel allocation method for allocating channels to terminal apparatuses to be communicated and base station apparatus utilizing the same

The A/D converter changes sampling timing of a received signal in a synchronization acquisition mode and a synchronization tracking mode. The A/D converter generates an internal clock of a sampling frequency eight times a symbol rate under the control of the clock control unit in the synchronization acquisition mode. On the other hand, in the synchronization tracking mode, the A/D converter generates an internal clock with a symbol point and one each point before and after the symbol point as sampling timing under the control of the clock control unit. The A/D converter further corrects the sampling timing of the symbol point based on the squares of the maximum value of a correlation value between the received signal and a reference signal and the absolute values of correlation values before and after the maximum value.

Growing community of inventors

Ichinomiya, Japan

Katsutoshi Kawai