Toshiro Ishikawa

Title: Toshiro Ishikawa: Inventor in Magnetic Recording and Television Technology.

Introduction

Toshiro Ishikawa is an inventor associated with Hirakata, Japan, and Matsushita Electric Industrial Co., Ltd. His work includes inventions in magnetic recording and television signal processing. His patent record lists 2 patents.

Latest Patents

Ishikawa’s listed patents address two distinct areas of electronic technology.

“Circuit Arrangement and Method for Magnetic Recording/Reproducing” describes a multi-track recording system that divides the recording heads into groups and drives each group with differently phased pulse signals. By preventing heads serving adjacent tracks from operating simultaneously, the arrangement is designed to reduce crosstalk and power consumption. It also describes controlling the writing-current waveform to help reduce peak-shift effects.

“Color Television Receiver for Simultaneous Display of Plural Programs” describes a receiver that displays pictures from two television channels on one screen. It stores the luminance and chrominance signals from one channel, reads them out at a compressed rate, adjusts their levels, and inserts them into part of the other channel’s picture.

Career Highlights

The available information connects Ishikawa’s patent work with Matsushita Electric Industrial Co., Ltd. His listed inventions demonstrate contributions to both magnetic recording systems and television receivers capable of displaying multiple programs.

Collaborations

Ishikawa’s listed coworkers include Yasuharu Shimeki and Takaaki Baba.

Conclusion

Toshiro Ishikawa’s two listed patents reflect inventive work in magnetic recording and multi-program television display technology.