Takeshi Shimada

Title: The Innovations of Takeshi Shimada

Introduction

Takeshi Shimada is a prominent inventor based in Kanagawa, Japan. He has made significant contributions to the field of photoelectric conversion technology. With a total of 2 patents, his work has advanced the capabilities of photoelectric systems.

Latest Patents

Shimada's latest patents include a photoelectric conversion apparatus, a photoelectric conversion system, and a photoelectric conversion method for shading correction. The photoelectric conversion apparatus features a read circuit designed to read signals from a pixel array. It also includes a signal processing unit that generates pixel signals by performing correlated double sampling (CDS) on the signals read by the read circuit, along with shading correction on the pixel signals. The read circuit is capable of reading signals from the pixel array with both first and second gain levels. It reads the noise level using the first gain and the optical signal level using either the first or second gain from selected effective pixels for the correlated double sampling. In the shading correction process, the pixel signal from the effective pixel, which has been read with the first gain, is corrected based on a first correction value. Meanwhile, the pixel signal from the effective pixel read with the second gain is corrected based on a second correction value.

The photoelectric conversion apparatus also includes a pixel array with multiple column signal lines divided into several groups. A readout circuit is configured to read signals from the pixel array through these column signal lines. A holding unit consists of one first region and multiple second regions. The first region stores a variety of first correction values corresponding to the columns, while each second region is associated with a readout condition for reading signals from each pixel unit of the pixel array. Additionally, a range of second correction values corresponding to the groups is stored in each second region.

Career Highlights

Takeshi Shimada is currently employed at Canon Kabushiki Kaisha, where he continues to innovate in the field of photoelectric technology. His work has been instrumental in enhancing the performance and efficiency of photoelectric conversion systems.

Collaborations

Shimada has collaborated with notable coworkers, including Keita Masuda and Keisuke Takahashi. Their combined expertise has contributed to the successful development of advanced photoelectric technologies.

Conclusion

Takeshi Shimada's contributions to photoelectric conversion technology demonstrate his innovative spirit and