摘要:
A piezoelectric vibrator using thickness mode as the primary vibration and having a cross section of a bevel or convex configuration is provided which is superior in mechanical strength, easy to steadily mount, and has a small dispersion of characteristic. By employing a structure in which a vibrator 1 and a support section 2 are composed of the same material, the end portions of the vibrator section are integrated with the support section on the periphery of the vibrator, and the configuration of the cross section of the vibrator 1 is such that the thicknesses of the end portions of the vibrator are smaller than that of the central portion of the vibrator, a superior mechanical strength without chipping or cracking at the end portions of the vibrator is obtained allowing easy mounting while keeping the vibrator size small. The structure provides an added effect of a small dispersion of characteristic because the end portions of the vibrator are not exposed and the dispersion of the precision of working such as chipping and surface roughness at the end portions of the vibrator is small.
摘要:
A determination unit determines whether or not the vehicle is running on a road known by a user. A mode setting unit sets an output mode to a known road running mode in a case where the determination unit determines that the vehicle is running on the known road, and sets the output mode to a normal mode in a case where the determination unit determines that the vehicle is not running on the known road. A function suppressing unit suppresses the interrupt function in the known road running mode. A valuable information presenting unit displays, in the known road running mode, some or all valuable information in a larger scale compared to the normal mode among plural piece of information displayed in the normal mode, and/or which displays other valuable information which is not displayed in the normal mode.
摘要:
Provided is a navigation device which appropriately notifies a user of information. When traffic information and feature information are acquired, the traffic information and the feature information are associated with an ID number in accordance with time information and a type contained in the traffic information and the feature information to generate guidance having a single data structure. Calculated based on the time information of the guidance is an elapsed time up to a current time counted by a timer. Regarding the guidance having exceeded a predetermined time period, an icon A of such guidance is displayed in a display pattern different from the guidance not having exceeded the predetermined time period, where the icon A is displayed with higher transparency like an icon A1 or A2. Accordingly, the user can easily recognize the reliability of the traffic information and the feature information. The information is thus appropriately notified to the user.
摘要:
A surface acoustic wave filter with little electromagnetic coupling between wires and improved attenuation characteristics is provided. This surface acoustic wave filter comprises: a package having a concavity in the shape of stairs made by laminating dielectrics, a surface acoustic wave element provided on the bottom face of the concavity, a plurality of wires for connecting between a plurality of electrodes provided on the surface of the surface acoustic wave element and a plurality of electrodes provided on one same plane portion of the stairs of the package in correspondence to a plurality of electrodes, and a dummy wire provided between the wires.
摘要:
A method for manufacturing a bimorph type piezoelectric element including a first step of providing a first piezoelectric single-crystal plate having a first surface and a second surface; a second step of providing a second piezoelectric single-crystal plate having a third surface and a fourth surface; a third step of directly bonding the third surface of the second piezoelectric single-crystal plate to the first surface of the first piezoelectric single-crystal plate without using any adhesives; a fourth step of forming a freely vibrating part by grinding away the second surface of the first piezoelectric single-crystal plate to a first depth and with a first spacing; and a fifth step of producing an element having a supporting member and the freely vibrating part by cutting the first piezoelectric single-crystal plate and second piezoelectric single-crystal plate with the freely vibrating part included, which have been prepared in the fourth step, with a predetermined spacing and at least in one of the directions of rows and columns.