Akiomi Kunisa is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of digital watermarking, holding a total of 9 patents. His innovative work focuses on enhancing the robustness and efficiency of watermarking systems.

Latest Patents

Among his latest patents is a digital watermarking system that utilizes a scrambling method. This invention includes an encoding apparatus designed to embed a watermark in host data. A multiplexer generates multiple bit sequences by adding initial data to the head of the watermark. A scrambler then scrambles these bit sequences, producing several scrambled watermarks. An embedder embeds these watermarks into the host data, creating various candidate watermarked host data. A signal-to-noise ratio calculator evaluates the robustness of the hidden watermarks, while a selector identifies the candidate with the highest robustness as the final watermarked host data.

Another notable patent is a digital watermark extracting apparatus that extracts a watermark hidden in host data. This system generates multiple candidate watermark locations based on a secret key. An extractor retrieves the watermark from each candidate location and assesses a soft decision value on the extracted watermark. A decision value evaluator calculates the sum of the absolute values of the components of each soft value. Finally, a selector determines the true watermark location based on the evaluated soft decision value, providing it to an ECC decoder for error-correction decoding.

Career Highlights

Akiomi Kunisa is currently employed at Sanyo Electric Co., Ltd., where he continues to develop innovative technologies in digital watermarking. His work has significantly advanced the field, making watermarking systems more reliable and effective.

Collaborations

Throughout his career, Akiomi has collaborated with notable colleagues, including Nobuo Itoh and Seiichiro Takahashi. These collaborations have further enriched his contributions to the field of digital watermarking.

Conclusion

Akiomi Kunisa is a distinguished inventor whose work in digital watermarking has led to numerous patents and advancements in technology. His innovative approaches continue to shape the future of watermarking systems, ensuring their robustness and effectiveness.

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