Canon Patente

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A vibration-type actuator includes a vibration member configured to include an electric-mechanical energy conversion element and an elastic member having a plate portion and projected portions which project in a same direction from a surface of the plate portion, a contact member configured to be in contact with the projected portions of the vibration member and move relative to the vibration member, a foamed member configured to be in contact with the vibration member, and a biasing member configured to press the vibration member toward the contact member via the foamed member, wherein, in a case where loss coefficient tanδ of the foamed member is measured by viscoelastic measurement in which vibration is applied to the foamed member, the loss coefficient tanδ of the foamed member measured at -20°C with vibration applied at a frequency of 1 Hz, is greater than the loss coefficient tanδ of the foamed member, measured at 40°C with vibration applied at a frequency of 10 Hz.

A power transmission device 100 performs an authentication process using an electronic certificate together with a power reception device 200. The power transmission device 100 performs power transmission control to the power reception device 200 on the basis of a cause of unsuccess of the authentication.

A base station is disclosed including, in a case where communication between a first user equipment (UE) and the base station is in a first state where relay communication to be implemented via a second UE for relaying communication is executed, acquisition means for acquiring first signal strength information indicating a signal strength between the first UE and the second UE and second signal strength information indicating a signal strength between the first UE and a third UE that is disconnected from the first UE, and comparison means for comparing the first signal strength information with the second signal strength information in the first state. The first signal strength information and the second signal strength information are information indicating signal strengths of a same physical channel.

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A photoelectric conversion apparatus includes a first APD, a first pulse generating circuit that generates a first pulse signal, based on an output from the first APD, a first switch that is provided between a first power supply that applies a first voltage and a first terminal of the first APD, and a second switch that is provided between a second power supply that applies a second voltage and the first terminal of the first APD. When the first switch is turned on, the first APD enters a recharge state. When the first switch is turned off, the first APD enters a standby state. When the second switch is turned on, the first APD enters an inactive state. When the second switch is turned off, the first APD enters an active state. A period during which the first switch is on differs from a period during which the second switch is on.

A photoelectric conversion device includes a photoelectric conversion element configured to generate a photon detection signal by avalanche multiplication; a circuit configured to control a first state in which a first terminal of the photoelectric conversion element is connected to a power-supply voltage and a second state in which resistance between the first terminal and the power-supply voltage is higher than in the first state; a counter circuit connected to the photoelectric conversion element; a waveform shaping circuit disposed between the photoelectric conversion element and the counter circuit; and a gating circuit connected between an output node of the waveform shaping circuit and an input node of the counter circuit and configured to control whether or not to input an output signal of the waveform shaping circuit to the counter circuit.

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A photoelectric conversion device includes: a photoelectric conversion unit that generates a photon detection signal by using avalanche multiplication; a counter circuit that counts the photon detection signal output from the photoelectric conversion unit; a first period included in one frame; and a second period that is included in the one frame, that follows the first period, and that does not overlap with the first period. A count value based on one photon detection signal by the counter circuit in the first period is greater than a count value based on the one photon detection signal by the counter circuit in the second period.

The present invention has an exposure control unit that generates a signal defining a plurality of second exposure periods which are included in a first exposure period corresponding to one frame and which are each shorter than the first exposure period. The present invention has a timing generation unit that generates a pulse signal defining time information within each of the second exposure periods. The present invention has a measurement unit that measures a number of the pulse signal from an initial detection of a photon in each of the second exposure periods, based on the pulse signal generated by the timing generation unit.

An electronic device includes a diaphragm having a contact surface configured to contact a subject and a reflective medium on a surface of the diaphragm opposite the contact surface, the diaphragm being configured to elastically deform when pressed by the subject at the contact surface; a light-emitting diode; an aperture configured to narrow light emitted by the light-emitting diode; a photodetector having a light-receiving surface configured to receive light that passes through the aperture and is specularly reflected by the reflective medium; an output unit configured to output a signal based on light in an illuminated region formed on the light-receiving surface by the reflected light; and a housing enclosing the light-emitting diode, the aperture, and the photodetector, wherein the diaphragm is configured to form part of an exterior of the electronic device together with the housing, and wherein a boundary of the illuminated region, the boundary being defined by the light narrowed by the aperture and specularly reflected by the reflective medium, moves in accordance with displacement of the contact surface caused by elastic deformation of the diaphragm, thereby changing an area of the illuminated region on the light-receiving surface and changing an output of the output unit.

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A print control apparatus for controlling a printing apparatus, comprises display control means for displaying, on a display unit, a setting content associated with setting processing of a default printing apparatus that can be used without accepting a selection operation by a user, acquisition means for acquiring information about a function of setting, as the default printing apparatus, a printing apparatus instructed to execute printing, and restriction means for restricting, if the acquired information indicates enabling of the function, display processing of the setting content so the setting content is not operated.

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