Abstract: To detect a wavelength drift of laser light with no error, an optical transmission module (10) includes: a laser diode (20); a laser temperature calculation section (52) for detecting the temperature of the laser diode (20) that monotonously increases with respect to a wavelength of the laser light; a wavelength calculation section (44) for detecting a transmittance of the laser light incident on an etalon filter (36) whose transmittance periodically varies with respect to the wavelength of the incident light, and a laser wavelength corresponding to the transmittance; and a wavelength error obtaining section (54) for detecting a wavelength error (wavelength drift), from a target wavelength, of the laser light output from the laser diode (20), based on the temperature detected by the laser temperature calculation section (52) and the laser wavelength detected by the wavelength calculation section (44).

Abstract: A technology that is applicable generally to manual noncontact card readers regardless of whether they are of insertion or swipe type, and realizes stable communication even with antennas of small size is provided. A pair of loop antennas is located in opposition to either side of a transport path, in proximity to a card insertion slot of the transport path. A magnetic circuit which connects the loop antennas together is located so as to not lie exposed in the transport path, so that, of the magnetic fluxes produced in two directions with respect to the noncontact card from the loop antennas, one of these will be diverted through the magnetic circuit without interlinking to the card.

Abstract: In a semiconductor device including a core transistor and an I/O transistor on the same semiconductor substrate, the core transistor includes a gate insulating film, a gate electrode, sidewalls, extension diffusion layers, and source/drain diffusion layers. The I/O transistor includes a gate insulating film, a gate electrode, sidewalls, and source/drain diffusion layers. In the I/O transistor, the source/drain diffusion region is offset relative to a channel region located beneath the gate insulating film in regions below the sidewalls.

Abstract: One transmission line includes a first signal conductor which is placed on one surface of a substrate formed from a dielectric or semiconductor and which is formed so as to be curved toward a first rotational direction within the surface, and a second signal conductor which is formed so as to be curved toward a second rotational direction opposite to the first rotational direction and which is placed in the surface so as to be electrically connected in series to the first signal conductor, wherein a transmission-direction reversal portion in which a signal is transmitted along a direction reversed with respect to a signal transmission direction of the transmission line as a whole is formed so as to include at least part of the first signal conductor and part of the second signal conductor. Such a transmission line is capable of obtaining a suppression effect of unwanted radiation intensity.

Abstract: A graphic accelerator includes an image-forming data decode unit, an image memory control unit and a screen data generation unit. The image memory control unit performs a control for writing an output of the image-forming data decode unit to a frame buffer and reading out information stored in the frame buffer. Screen data generation unit restores (interpolates) the color information based on the data read out from the frame buffer and generates screen data. In the frame buffer the information for each pixel is stored in a deleted form including two types of color information among three types of color information consisting of R, G and B. At the reading, the deleted color information is interpolated with the color information of other pixel.