Company Filing History:

5 out of 1,210

Hitachi Astemo Ltd.

Renesas Technology Corp.

patents

4. 2 out of 2,028

Hitachi Automotive Systems, Ltd.

patents

Years Active: 2002-2025

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12 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12451281 - Load drive device and method for controlling electronic control device (2025-10-21),

2. 12222406 - Integrated circuit device (2025-02-11),

3. 11990897 - Current control device for control of supply current with low-side and high-side switch elements and duration measurement (2024-05-21),

4. 11542885 - Load drive circuit and load drive system (2023-01-03),

5. 11459996 - Electronic control unit (2022-10-04),

6. 11098689 - Ignition device for internal combustion engine (2021-08-24),

7. 11008988 - Electronic control device and abnormality/normality determination method of electronic control device (2021-05-18),

8. 8441115 - Semiconductor device with exposed thermal conductivity part (2013-05-14),

9. 8299822 - Driver and output buffer circuit (2012-10-30),

10. 7683723 - Phase locked loop circuits, offset PLL transmitters, radio frequency integrated circuits and mobile phone systems (2010-03-23),

11. 7352250 - Phase locked loop circuits, offset PLL transmitters, radio frequency integrated circuits and mobile phone systems (2008-04-01),

12. 6344809 - Line interface circuit and information communication apparatus using it (2002-02-05),

Title: Yasuo Shima: Innovator in Load Drive Devices and Integrated Circuits

Introduction

Yasuo Shima is a prominent inventor based in Ome, Japan, known for his significant contributions to the field of electronic control devices. With a total of 12 patents to his name, Shima has developed innovative technologies that enhance the reliability and efficiency of electronic systems.

Latest Patents

One of Shima's latest patents is a load drive device and method for controlling electronic control devices. This invention provides a load drive device that drives and controls an inductive load based on a PWM signal from a microcomputer. The device boasts excellent reliability and responsiveness, capable of quickly detecting disconnection of the inductive load. It includes a microcomputer and a driver circuit that operates the inductive load using a pulse width modulation signal. The driver circuit features a current monitoring circuit that tracks the current flowing through the inductive load and a disconnection diagnosis circuit that identifies disconnection based on the monitored current value.

Another notable patent is for an integrated circuit device that reliably detects poor opening conditions concerning the ground line, regardless of the load's connection state or the drive circuit's operating state. This integrated circuit device utilizes a drive circuit that alternates between conducting and interrupting the load current. The diagnostic circuit measures the potential difference between the ground line and the common ground to assess the grounding state effectively.

Career Highlights

Yasuo Shima has worked with notable companies such as Hitachi Astemo Ltd. and Hitachi, Ltd. His experience in these organizations has contributed to his expertise in developing advanced electronic control technologies.

Collaborations

Shima has collaborated with esteemed colleagues, including Yoichiro Kobayashi and Yukinori Akamine. These partnerships have fostered innovation and the exchange of ideas in the field of electronics.

Conclusion

Yasuo Shima's contributions to the development of load drive devices and integrated circuits have significantly impacted the electronics industry. His innovative patents reflect his commitment to enhancing the reliability and efficiency of electronic systems.

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