Location History:
- Sagamihara, JP (2007 - 2009)
- Tokyo, JP (2008 - 2010)
Company Filing History:
Years Active: 2007-2010
Title: Koji Tomioka: Innovator in Circuit Design
Introduction
Koji Tomioka is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of circuit design, holding a total of 4 patents. His work focuses on improving electronic devices through innovative circuit solutions.
Latest Patents
One of his latest patents is a waveform generating circuit and spread spectrum clock generator. This invention enhances the spread spectrum effect while minimizing circuit costs by modifying the shape of a triangular wave used for frequency modulation. The output signal from the modulation waveform generating circuit is input to a voltage-controlled oscillator (VCO), which modulates the oscillation frequency in response to the modulation waveform. This results in an output clock that varies its frequency effectively.
Another notable patent involves an optical disc device, including a circuit for the optical disc device, wobble signal reproduction method, and land pre-pit signal reproduction method. This invention utilizes a mark S/H circuit to sample signals generated by a photodetector detecting return beams from marks on an optical disk. The circuit justifies the amplitudes of the sampled signals and combines them to reproduce a wobble signal, enhancing the performance of optical disc devices.
Career Highlights
Koji Tomioka is currently employed at Asahi Kasei Microsystems Co., Ltd., where he continues to innovate in the field of circuit design. His work has been instrumental in advancing technologies related to electronic devices and optical systems.
Collaborations
Throughout his career, Tomioka has collaborated with notable colleagues, including Tamotsu Nagashima and Makoto Kobayashi. These collaborations have contributed to the development of cutting-edge technologies in their respective fields.
Conclusion
Koji Tomioka's contributions to circuit design and his innovative patents demonstrate his commitment to advancing technology. His work continues to influence the development of electronic devices and optical systems, making him a significant figure in the field.