This inventor holds 5 USPTO granted patents. Top assignees: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Electric Engineering Company, Limited, Other. Active years: 1994-2002.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Itami, JP (1994)
- Tokyo, JP (1999 - 2001)
- Hyogo, JP (2002)
Company Filing History:
3 out of 21,351 
3 out of 177 
2 out of 834,453 Years Active: 1994-2002
Title: Shunichi Kondoh: Innovator in Signal Detection and Motor Control Technologies
Introduction
Shunichi Kondoh is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the fields of signal detection and motor control technologies. With a total of 5 patents to his name, his work has had a considerable impact on various applications.
Latest Patents
One of his latest patents is the VISS signal detection circuit. This invention involves comparators receiving reference voltages, where an output signal from a differential amplifier is applied to these comparators. The relationship of Vref > Vref > Vref > Vref > Vref > Vbias > Vref > Vref > Vref > Vref > Vref is established. The output signals from the comparators are then applied to a data latch/threshold level select circuit. This select circuit retains the maximum peak level of the prior comparison by the comparators and the minimum peak value of the prior comparison. It selects the output signal of the comparator of one lower level than the comparator that detects the maximum peak level to supply the selected signal to an RS flip-flop circuit. Similarly, it selects the output signal of the comparator of one higher level than the comparator that detects the minimum peak level. The RS flip-flop circuit outputs a detection signal of a VISS signal in response to these select signals, allowing for reliable detection of the VISS signal without interference from erase noise.
Another notable patent is the motor driving apparatus, which aims to reduce acoustic noise across a wide range of rotating speeds while implementing PWM control. A trapezoidal wave signal (VCTL) is generated, which rises and falls in each given electrical angle section. This signal is generated in the opposite phase as well. A control circuit appropriately selects among the signals and inputs them to comparators. These comparators compare the input signals with a carrier signal provided as a triangular wave. The switch elements for controlling the current-supply pattern to the motor turn on and off based on the output signals from the comparators. This results in a soft switching of the current-supply pattern by PWM control.
Career Highlights
Shunichi Kondoh has worked with notable companies such as Mitsubishi Denki and Mitsubishi Electric Engineering Company, Limited. His experience in these organizations has contributed to his expertise in developing innovative technologies.
Collaborations
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile