Hiroshi Suzuki

TL;DR: An image display device comprises an optical imaging arrangement for providing image information to illumination light and for transmitting the light as an optical image signal; a display for receiving the optical image signals and for displaying an image based on the image information; and a projecting optical arrangement including a reflecting part having a reflecting surface for reflecting the image signal, and a refracting optical part having an aspherical surface for projecting the optical signal onto the reflecting part as discussed by the authors.

TL;DR: In this article, a communication inhibiting apparatus is provided with disturbing wave generating means for generating a disturbing wave signal which disturbs communications to and from a portable telephone or similar communication terminal equipment.

Abstract: An antenna switching circuit for a portable radio-frequency apparatus, such as a portable telephone, provides an antenna switching circuit (11) which enables switching of a radio-frequency signal path passing through an antenna, between a built-in antenna (3) and an external antenna (13), and which increases the degree of freedom in arranging the components of the apparatus. The antenna switching circuit comprises a built-in antenna (3), an external-antenna connector (2a) and a radio-frequency cable (6) serving as a path for radio-frequency signals, with an electrical control switch (11) for selecting either the built-in antenna (3) or the external-antenna connector (2a).

TL;DR: In this article, a variable gain amplifier (1) amplifies a transmitting wave with a gain corresponding to a control voltage V C from a power control section ( 110 ) when a transmission power (P OUT ) of the transmitting wave is within a measurable range of a detecting circuit (3), the power control area (110) sets a control variable feedback ratio (K′) to 0 and applies negative feedback to a detection voltage (V DET ) and thereby, implements close loop control to cause transmission power P OUT to be closer to a designated level.

TL;DR: In this paper, a transparent screen is provided with a refraction/total reflection plate in a form of a Fresnel lens, which has a sawtooth light-incidence-side surface upon which light to be projected is incident, and a light-emitting side surface via which the light exiting from the reflection plate exits, and an image formation/display plate for forming a projection image from the light that exits from the reflected image.