Shigeyuki Itoh

The FM Audio Signal Recording System for 8 mm Video

The 8 mm Video standard was determined by the Working Groups in 8 mm Video Conference which is composed of tuany companies in the world in March, 1983. The 8 mm Video system aims to achieve a small-sized & light-weighted design, a good quality picture and a high quality sound. Metal head and metal powder( MP)/evaporated(ME) tape improve a recording density and realize a compact cassette-tape & a small cylinder mechanism.

Audio signal recording and reproducing apparatus

There is provided an audio signal magnetic recording and reproducing apparatus in which a frequency modulated luminance signal and a frequency modulated audio signal are sequentially recorded and reproduced onto/from the same magnetic tape as recording loci each having predetermined angle of inclination for the tape running direction by a plurality of rotary heads having different azimuth angles, wherein the apparatus increases a recording level of the frequency modulated audio signal for the vertical sync signal period of the luminance signal.

An optical interface system for camera/recorder

An optical interface system of video and audio signals has been developed for easy connection between a camera/recorder and a TV. The system satisfies the requirements both for small size and transmission performance. Further, we are designing an advanced system with two transmission modes using optical guides. >

Multi-Track PCM Audio Utilizing 8 mm Video System

The 8mm Video system can realize the smaller-size & lighter-weight design, the better sound quality and the better picture quality than conventional VCRs.