Chao S Chi

Title: The Innovations of Chao S Chi

Introduction

Chao S Chi is a notable inventor based in Shrewsbury, MA (US), recognized for his contributions to digital magnetic recording technology. With a total of 8 patents to his name, Chi has made significant advancements in the field of information storage and signal processing.

Latest Patents

One of Chi's latest patents is the "Triplex Digital Magnetic Recording and Reproducing System." This innovative quaternary saturated digital magnetic recording system enhances information entropy, providing an effective bit density increase of 100% or more over the MFM code. In its simplest implementation, groups of two input binary bits are mapped into one data cell, utilizing four combinations of long or short breaks and positive or negative polarity. The break can be centralized within the data cell for self-clocking. Additionally, the system for reproducing the recorded information includes a peak detector that responds to the recorded signal, coupled with pulse polarity and break width detector circuitry, featuring an internally synchronized clock for remapping the recorded data into binary format.

Another significant invention is the "Adjustable Equalizer." This device is an automatically adjustable equalizer designed to modify the spectral contour of digital, analog, and magnetically recorded signals. A temperature sensor-controlled switching circuit automatically adjusts the delay and forward gain parameters of the equalizer to optimize the equalization contour across a wide range of temperatures, pressures, or other physical conditions.

Career Highlights

Throughout his career, Chao S Chi has worked with prominent companies such as Sperry Corporation and Digital Equipment Corporation. His work in these organizations has contributed to the development of cutting-edge technologies in the field of digital recording and signal processing.

Collaborations

Chi has collaborated with notable individuals in the industry, including Peter T McLean and Norman A Field. These collaborations have further enriched his work and innovations.

Conclusion

Chao S Chi's contributions to digital magnetic recording and signal processing have significantly impacted the field. His innovative patents and career achievements highlight his role as a leading inventor in technology.