Tadayuki Yamada

Title: Tadayuki Yamada: Innovator in Pattern Discrimination Technology

Introduction

Tadayuki Yamada is a notable inventor based in Hino, Japan. He has made significant contributions to the field of pattern discrimination technology, holding a total of four patents. His work focuses on enhancing the efficiency and accuracy of scanning data processing.

Latest Patents

One of Yamada's latest patents is a sophisticated pattern discriminator. This device receives scanning data obtained by raster scanning objects within predefined window regions using a photoelectric converter. It converts the scanned data into pixel binary data by employing a threshold value that is dependent on the scanning position and window region. The pattern discriminator evaluates the binary data according to predetermined criteria to produce an output signal indicative of the evaluation. Additionally, a memory component stores data representing the window regions in a compressed format, indicating the coordinates of the beginning and ending points of each window region on each scanning line, along with the corresponding threshold values for each segment.

Another significant aspect of his patent involves obtaining data that specifies the shapes of desired window regions approximated by polygons. This is achieved by specifying the apexes of the polygons, while a programmed CPU computes the coordinates of each pixel along the lines connecting adjacent apexes. The memory also stores the apex and coordinate data that defines the starting and ending points of each window region. Furthermore, polygonal masks within each window and sub-mask polygonal window regions can be defined similarly. A shifting detector and position corrector are also included, which detects any positional shift of an object being scanned in relation to a previously scanned reference object, allowing for adjustments to the defined window regions.

Career Highlights

Tadayuki Yamada has built a successful career at Fuji Electric Co., Ltd., where he has been instrumental in developing innovative technologies. His expertise in pattern discrimination has positioned him as a key figure in the advancement of scanning technologies.

Collaborations

Yamada has collaborated with notable colleagues, including Michiaki Miyagawa and Kouichi Ohki. Their combined efforts have contributed to the development of cutting-edge technologies in their field.

Conclusion

Tadayuki Yamada's contributions to pattern discrimination technology have made a significant impact in the industry. His innovative patents and collaborative efforts continue to drive advancements in scanning technology.