Abstract: A biological signal measurement system includes: a biological signal measurer that measures a biological signal including external noise of biological noise and of environmental noise; biological noise measurer that measures a signal including the biological noise; a biological noise estimator that estimates the biological noise from the signal measured by the biological noise measurer; an environmental noise measurer that measures a signal including the environmental noise; an environmental noise estimator that estimates the environmental noise from the signal measured by the environmental noise measurer; and a calculator that calculates the biological signal in consideration of an effect of the external noise using the signal measured by the biological signal measurer, the biological noise estimated by the biological noise estimator and the environmental noise estimated by the environmental noise estimator.

Abstract: Communication becomes impossible for many mobile stations when a communication failure occurs in a fixed station while the mobile stations are operating in an infrastructure mode. Provided is a communication system that includes a plurality of mobile stations and at least one of a base station and a wireless LAN access point, wherein the plurality of mobile stations establish communication with each other and form an ad hoc network that realizes a mesh network topology, and at least one mobile station among the plurality of mobile stations establishes communication with at least one of the base station and the wireless LAN access point, and connects another mobile station among the plurality of mobile stations to the at least one of the base station and the wireless LAN access point using a tethering function.

Abstract: A biological signal measurement system includes: a biological signal measurer that measures a biological signal including external noise of biological noise and of environmental noise; biological noise measurer that measures a signal including the biological noise; a biological noise estimator that estimates the biological noise from the signal measured by the biological noise measurer; an environmental noise measurer that measures a signal including the environmental noise; an environmental noise estimator that estimates the environmental noise from the signal measured by the environmental noise measurer; and a calculator that calculates the biological signal in consideration of an effect of the external noise using the signal measured by the biological signal measurer, the biological noise estimated by the biological noise estimator and the environmental noise estimated by the environmental noise estimator.

Abstract: An object of the present invention is to provide an image display apparatus that suppresses the load on the CPU and the internal storage and suppresses an increase in stress to the user. The image display apparatus of the present invention includes a display, an internal storage, an interface connectable to an external storage, a receiver, and a controller. The external storage stores at least one piece of image data and at least one piece of thumbnail image data obtained by reducing the image data. The controller switches between a thumbnail display mode in which thumbnail image data transferred from the external storage to the internal storage is displayed on the display and a full screen display mode in which original image data of thumbnail image data is transferred from the external storage to the internal storage and displayed on the display, on the basis of inputs to the receiver.

Abstract: Communication becomes impossible for many mobile stations when a communication failure occurs in a fixed station while the mobile stations are operating in an infrastructure mode. Provided is a communication system that includes a plurality of mobile stations and at least one of a base station and a wireless LAN access point, wherein the plurality of mobile stations establish communication with each other and form an ad hoc network that realizes a mesh network topology, and at least one mobile station among the plurality of mobile stations establishes communication with at least one of the base station and the wireless LAN access point, and connects another mobile station among the plurality of mobile stations to the at least one of the base station and the wireless LAN access point using a tethering function.

Abstract: A projection positioned in the center of a concave section of a toroidal combustion chamber is divided into a section with a steep slope extending from the bottom to the head surface and a section with a gentle slope. The head surface is in the form of a flattened conical trapezoid. Because of its shape, the projection makes it possible for the air which is close to the center section to flow close to the surface of a side wall of the concave section. The air which had been at the center section is added to the amount of air supplied for combustion and is mixed with the fuel in the vicinity of the surface of the side wall of the concave section. By setting the angle at which the air flows along the side wall surface (re-entrant angle) in the combustion chamber, the flow of the air close to the side wall surface is made turbulent, which improves the agitation of the fuel.

Abstract: Variable swirl intake apparatus (24) controls a swirl of intake air in cylinder chamber (22) of an engine.

Abstract: Variable swirl intake apparatus 24 controls a swirl of intake air in cylinder chamber 22 of an engine. Variable swirl intake apparatus 24 has intake port 25 which has entrance portion 25a formed on cylinder head 23 of the engine and extending from the side surface of cylinder head 23 and swirl chamber 25b which communicates with entrance portion 25a and is formed to provide a swirl to a gas flow flowing from entrance portion 25a, intake valve 26, arranged on the lower surface of cylinder head 23, for opening/closing between swirl chamber 25b and cylinder chamber 22 of the engine, swirl control path 28, one end of which is open to swirl chamber 25a on the side of entrance portion 25a with respect to a line connecting the axis along a piston sliding direction at the center of cylinder chamber 22 and the axis of the intake valve, and the other end of which is open to the side surface of cylinder head 23, and a control apparatus 29 for controlling a gas flow into swirl control path 28.