Abstract: A wideband noise reducing device has a three level structure including a magnetic member comprising at least one magnetic film, and first and second boards disposed on both sides of the magnetic member so that the magnetic member is sandwiched between the first and second boards. Each of the first and second boards has a signal pattern portion. The signal pattern portions of the first and second boards are connected with each other to form a signal line wound around the magnetic member.

Abstract: A pressure-sensitive, conductive elastic sheet for use in a graphics digitizing tablet through which various letters or figures can be detected, the characteristics of which are such that the contact pressure is almost constant irrespective of contact area or increases with increasing contact area. The pressure-sensitive sheet according to the present invention comprises a silicon rubber in which a number of coarse, ferromagnetic, conductive metal particles with a diameter of 30 to 150 micron are mixed with a number of fine, ferromagnetic, conductive metal particles with a diameter of 10 micron or less or 50 micron or less at a predetermined proportion in such a manner that the coarse particles are aligned vertically through the interior thereof and the fine particles are dispersed near at least one surface thereof. To properly align the particles, the sheet is allowed to set within a uniform magnetic field.