Chi H Chung

Title: Innovations of Chi H Chung in Optical Recording Technologies

Introduction

Chi H Chung is a notable inventor based in San Jose, California, recognized for his contributions to optical recording technologies. He holds a total of four patents that showcase his innovative approaches to increasing data storage capacity and improving the efficiency of optical media.

Latest Patents

One of his latest patents is titled "Multi-state optical contrasts in optical recording media for data." This invention presents a method and apparatus designed to enhance the information storage capacity of optical recording structures. By utilizing a laser beam of varying powers, the invention produces multiple physical states, each yielding a different optical contrast. This advancement allows for encoding schemes based on three or more bits, significantly increasing data density on optical recording structures, such as optical discs. To ensure stability and enhance the speed of transitions between states, a stabiliment layer is incorporated adjacent to the photosensitive layer of the disc.

Another significant patent is the "Apparatus and method for detecting and compensating for pit extension in optical recording media." This system focuses on storing and retrieving encoded data using pit edge detection. It determines the pit extension characteristics of a medium by employing laser beam test write pulses to form pits and measuring the time difference between the pulse width and the transitions of the corresponding pits. This information is stored in a certification sector of the medium, allowing subsequent write pulses to be modified for optimal performance.

Career Highlights

Chi H Chung has worked with prominent companies, including Minnesota Mining and Manufacturing Company and Laserdrive Ltd. His experience in these organizations has contributed to his expertise in optical technologies and data storage solutions.

Collaborations

Throughout his career, Chung has collaborated with notable individuals such as Theodore D Rees and Ian Turner. These partnerships have likely fostered innovation and the development of advanced optical recording technologies.

Conclusion

Chi H Chung's work in optical recording technologies has led to significant advancements in data storage capacity and efficiency. His patents reflect a deep understanding of the complexities involved in optical media, positioning him as a key figure in this field.