Location History:
- Ora-Gun, JP (2007)
- Ichinomiya, JP (2013)
Company Filing History:
Years Active: 2007-2013
Title: Hiroyuki Mutou: Innovator in Beam Irradiation Technology
Introduction
Hiroyuki Mutou is a notable inventor based in Ichinomiya, Japan. He has made significant contributions to the field of optical technology, particularly in beam irradiation devices and tilt control mechanisms for optical disc recording and playback apparatus. With a total of 2 patents, his work showcases innovative solutions that enhance the functionality and efficiency of optical systems.
Latest Patents
One of Mutou's latest patents is a beam irradiation device. This device includes a photodetector that receives servo light and outputs a detection signal based on the light receiving position of the servo light. The signal processing section of the device features an A/D conversion circuit that converts the detection signal into a digital signal. Additionally, an error signal adjusting circuit converts an error component signal from the photodetector into a signal that is within a processable range of the A/D conversion circuit. This innovative arrangement allows for precise correction of the first digital signal derived from the detection signal with a second digital signal derived from the error component signal.
Another significant patent by Mutou involves tilt control for optical disc recording and playback apparatus. In this invention, a DC voltage value is obtained at various positions on a disc from a drive signal supplied to a focusing coil in an optical pickup. The relationship between the respective positions and the DC voltage values is stored in a memory circuit. During recording or playback, the calculated DC voltage value, along with the AC signal included in the drive signal, is combined to create a signal for the tilt adjustment coil. This invention enhances the accuracy and reliability of optical disc operations.
Career Highlights
Hiroyuki Mutou is currently employed at Sanyo Electric Co., Ltd., where he continues to develop innovative technologies in the field of optics. His work has been instrumental in advancing the capabilities of optical devices, making them more efficient and effective for various applications.
Collaborations
Mutou has collaborated with notable colleagues such as Tsuyoshi Yamamoto and Koji Tsukagoshi. Their combined expertise has contributed to the successful development of advanced optical technologies.
Conclusion
Hiroyuki Mutou's contributions to beam irradiation technology and optical disc systems highlight his innovative spirit and dedication to advancing optical technology. His patents reflect a commitment to improving the functionality and efficiency of optical devices