David C Cheng

Title: The Innovative Contributions of David C Cheng

Introduction

David C Cheng is a notable inventor based in Palo Alto, CA, who has made significant contributions to the field of magnetic recording technology. With a total of 5 patents to his name, Cheng's work has advanced the capabilities of data storage and retrieval systems.

Latest Patents

Cheng's latest patents include groundbreaking methods for enhancing magnetic recording. One of his notable inventions is a method for track width control of readback elements using ion implantation. This innovation allows for the selective deactivation of magnetic sensitivity in specific regions of the read and write heads, which are trimmed to approximately 100 nm wide. The etch depths for the MR element and write head are 200 nm and 1 µm, respectively. This precise trimming process ensures that inactive regions are accurately selected for irradiation, as evidenced by the offset of the trimmed MR element.

Another significant patent focuses on improving magnetic recording at high data rates. This method involves write precompensating data patterns for recording on magnetic storage media. By applying predetermined write-precompensation delays to various transitions within bursts of data, Cheng's invention optimizes the recording process, particularly for dibits and tribits.

Career Highlights

Cheng is currently employed at International Business Machines Corporation (IBM), where he continues to innovate in the field of magnetic storage technology. His work has not only contributed to the advancement of data storage solutions but has also positioned him as a key figure in the industry.

Collaborations

Throughout his career, Cheng has collaborated with esteemed colleagues, including Radley Wahl Olson and David A Thompson. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

David C Cheng's contributions to magnetic recording technology exemplify the spirit of innovation that drives advancements in data storage. His patents reflect a deep understanding of the complexities involved in magnetic sensitivity and data recording, making him a valuable asset to the field.