Susumu Niinuma

Title: Susumu Niinuma: Innovator in Electronic Devices

Introduction

Susumu Niinuma is a notable inventor based in Saitama, Japan. He has made significant contributions to the field of electronic devices, holding a total of 7 patents. His work focuses on enhancing the functionality and safety of electronic systems, particularly in the realm of USB devices and data conversion apparatus.

Latest Patents

One of Niinuma's latest patents is an electronic device that includes an interface terminal and a power supply cable connected thereto. This invention addresses the challenge of increasing the consumption current of a bus-powered USB device. To solve this issue, he developed a conversion cable for a DC connector and a USB connector. This USB device is equipped with a USB cable and a DC connector, which detects the state in which power supply voltage is supplied to two sets of USB cables. A transistor power supply switch is activated based on this detection. Additionally, an identification circuit is incorporated in the USB conversion cable to distinguish it from an AC adaptor. When the AC adaptor is connected, the USB device operates as a self-powered USB device.

Another significant patent is a data conversion apparatus featuring a safety circuit. This invention includes a CD-ROM drive that integrates a safety circuit with a NOR gate. The NOR gate has one input connected to a disk motor drive control signal terminal of a system controller and another input connected to the output of a sensor. The system controller outputs a signal that activates or deactivates the motor. The motor is set into rotation when the NOR gate is high and stops when the NOR gate is low. However, if the sensor is high, the NOR gate goes low, stopping the motor regardless of the other input from the system controller.

Career Highlights

Throughout his career, Niinuma has worked with prominent companies such as Pioneer Electronic Corporation and Teac Corporation. His experience in these organizations has allowed him to refine his skills and contribute to innovative projects in the electronics industry.

Collaborations

Some of his notable coworkers include Toshiyuki Kimura and Akira Haeno. Their collaboration has likely fostered a creative environment that encourages innovation and the development of cutting-edge technologies.

Conclusion

Susumu Niinuma's contributions to electronic devices demonstrate his commitment to innovation and safety in technology. His patents reflect a deep understanding of the challenges faced in the industry and