Kenichiro Kumamoto

TL;DR: In this article, an outdoor unit which includes a converter for converting super-high frequency signals received by an antenna to ultra high frequency signals, a local oscillator for generating a local signal supplied to the converter, a switch for switching the frequency of the local signal, and a detecting circuit for detecting an operating voltage supplied by the outdoor unit to the indoor unit and the value of which is changed according to a band range of the super high frequency signal.

TL;DR: In this paper, a security monitor system is designed to transmit video signals from a plurality of video information sources via a common transmission line, where video information from respective video sources is scanned at given timings to check the monitoring areas in a given order.

TL;DR: In this article, a tuner for a television receiver is designed for minimal size and to have a series of external terminals placed along one side thereof, where an electronic tuning section including several local oscillator circuits is located within a common shielding case and a phase locked loop channel selection circuit is also located within the case in an isolated compartment thereof.

TL;DR: In this paper, a microstrip circuit of the kind employing a signal transmission line connected to an active circuit element and impedance matching elements, such as parallel-connected open-ended stubs, is described.

TL;DR: In this paper, an outdoor unit (2) which includes a converter (8) for converting super high frequency signals received by an antenna (1) to ultra high frequency (UHF) signals, a local oscillator (9L, 9H) for generating a local signal supplied to the converter, a switch (14) for switching the frequency of the local signal, and a detecting circuit (15) for detecting an operating voltage supplied by the outdoor unit and the value of which is changed according to a band range of the UHF signals, the output of the detecting