Hirotsugu Ohkubo

Title: Innovations of Hirotsugu Ohkubo

Introduction

Hirotsugu Ohkubo is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of information signal recording and reproduction. With a total of 2 patents, his work has had a considerable impact on technology, particularly in video recording systems.

Latest Patents

Hirotsugu Ohkubo's latest patents include an apparatus for recording and/or reproducing an information signal. This invention involves a PCM (Pulse Code Modulation) signal recording and/or reproducing apparatus, such as a video tape recorder. It records and reproduces an information signal indicating the date of recording, a video signal, and a PCM signal from a helical track on a record medium, such as magnetic tape. The track consists of first and second portions that record the PCM signal and the video signal, respectively. In advantageous embodiments, the information signal is recorded in a guard band area between these portions. The apparatus can selectively superimpose date information on the video signal for display, allowing for convenient searches of recorded signals based on the date.

Another significant patent involves a rotary head VTR that records video and PCM signals in designated areas. This apparatus employs rotary heads for recording a video signal and a Pulse Code Modulated signal along successive slant tracks on magnetic tape. It also records a subcode signal in a third area between the first and second areas. A pulse generator provides a pulse signal indicating the rotational position of each rotary head, ensuring precise recording and playback.

Career Highlights

Hirotsugu Ohkubo has had a distinguished career at Sony Corporation, where he has been instrumental in developing advanced recording technologies. His innovative approaches have contributed to the evolution of video recording systems, enhancing user experience and functionality.

Collaborations

Throughout his career, Hirotsugu has collaborated with talented individuals such as Hiroshi Yamazaki and Kazuyuki Ogawa. These partnerships have fostered creativity and innovation in their projects, leading to groundbreaking advancements in technology.

Conclusion

Hirotsugu Ohkubo's contributions to the field of information signal recording and reproduction have established him as a prominent inventor. His patents reflect a commitment to innovation and excellence in technology.