Kazuharu Hasegawa

Title: Kazuharu Hasegawa: Innovator in Content Sales Systems

Introduction

Kazuharu Hasegawa is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of content sales systems, holding a total of 3 patents. His work focuses on enhancing the efficiency and security of content sales through innovative technological solutions.

Latest Patents

Hasegawa's latest patents include a "Content Sales Period Verifying System" and a "Content Decryption Key Effective Period Verifying System." This system utilizes a CD-ROM that is recorded with both a CD-ROM effective period and an effective period for the content stored within it. A CD-ROM effective period judging section in a personal computer reads these effective periods and compares them with a machine date generated by a machine date generating section. It enables a purchase slip transmitting section to transmit a purchase slip only when the machine data falls within the effective periods. Additionally, a center's CD-ROM effective period judging section compares the present date with the effective periods registered on a goods master, ensuring that keys are transmitted only when both the CD-ROM number and content ID fall within the effective periods.

Another significant patent is the "Content Sales Price Accounting System and Accounting Method Thereof." This system involves a goods master that stores sales prices and effective periods for respective contents. A contract master holds data regarding whether the sales price can be reduced. The key sales section charges content purchasers based on the sales price stored in the goods master. An updating section compares the present time with the sales effective period recorded on the goods master, allowing for price reductions when applicable.

Career Highlights

Kazuharu Hasegawa is currently employed at Fujitsu Corporation, where he continues to innovate and develop new technologies. His work has had a substantial impact on the way content sales are managed and executed, particularly in the digital realm.

Collaborations

Hasegawa has collaborated with notable coworkers such as Haruhiko Tsunoda and Makoto Yoshioka. Their combined expertise has contributed to the successful development of various projects within the company.

Conclusion

Kazuharu Hasegawa is a distinguished inventor whose work in content sales systems has paved the way for more secure and efficient transactions. His innovative patents reflect his commitment to advancing technology in this field.