Patents by Inventor Mitsuru Shiozaki
Mitsuru Shiozaki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11637982Abstract: A solid-state imaging device includes a pixel part, a reading part for reading a pixel signal from the pixel part and a response data generating part including a fuzzy extractor. The response data generating part generates response data including a unique key in association with at least one selected from among variation information of pixels and variation information of the reading part. The response data generating part generates, when regenerating a key, a unique key using helper data acquired in generation of an initial key, variation information acquired in the regeneration of the key, and reliability information determined based on the variation information acquired in the regeneration of the key.Type: GrantFiled: January 18, 2019Date of Patent: April 25, 2023Assignees: BRILLNICS JAPAN INC., THE RITSUMEIKAN TRUSTInventors: Shunsuke Okura, Masayoshi Shirahata, Takeshi Fujino, Mitsuru Shiozaki, Takaya Kubota
-
Patent number: 11336857Abstract: A fuzzy extractor includes an initial key generating part including a true random number generator, and a key regenerating part. The true random number generator generates a true random number using a read-out signal read from the reading part or a pixel signal read from the pixels of the pixel part in a true random number generation mode. The initial key generating part generates helper data and an initial key based on the true random number generated by the true random number generator and variation information acquired as a response when the initial key is generated. The key regenerating part generates, when a key is regenerated, a unique key based on helper data acquired when the initial key is generated and variation information acquired as a response including an error when the key is regenerated.Type: GrantFiled: March 4, 2020Date of Patent: May 17, 2022Assignees: BRILLNICS JAPAN INC., THE RITSUMEIKAN TRUSTInventors: Shunsuke Okura, Kenichiro Ishikawa, Masayoshi Shirahata, Takeshi Fujino, Mitsuru Shiozaki, Takaya Kubota
-
Publication number: 20210127080Abstract: A solid-state imaging device includes a pixel part, a reading part for reading a pixel signal from the pixel part and a response data generating part including a fuzzy extractor. The response data generating part generates response data including a unique key in association with at least one selected from among variation information of pixels and variation information of the reading part. The response data generating part generates, when regenerating a key, a unique key using helper data acquired in generation of an initial key, variation information acquired in the regeneration of the key, and reliability information determined based on the variation information acquired in the regeneration of the key.Type: ApplicationFiled: January 18, 2019Publication date: April 29, 2021Inventors: Shunsuke OKURA, Masayoshi SHIRAHATA, Takeshi FUJINO, Mitsuru SHIOZAKI, Takaya KUBOTA
-
Publication number: 20200288078Abstract: A fuzzy extractor includes an initial key generating part including a true random number generator, and a key regenerating part. The true random number generator generates a true random number using a read-out signal read from the reading part or a pixel signal read from the pixels of the pixel part in a true random number generation mode. The initial key generating part generates helper data and an initial key based on the true random number generated by the true random number generator and variation information acquired as a response when the initial key is generated. The key regenerating part generates, when a key is regenerated, a unique key based on helper data acquired when the initial key is generated and variation information acquired as a response including an error when the key is regenerated.Type: ApplicationFiled: March 4, 2020Publication date: September 10, 2020Inventors: Shunsuke OKURA, Kenichiro ISHIKAWA, Masayoshi SHIRAHATA, Takeshi FUJINO, Mitsuru SHIOZAKI, Takaya KUBOTA
-
Patent number: 10484638Abstract: A solid-state imaging device having a pixel portion in which a plurality of pixels each including a photodiode are arranged in rows and columns, a reading part for reading pixel signals from the pixel portion, and a key generation part which generates a unique key by using, as the key generation-use data, at least one of fluctuation information of pixels and fluctuation information of the reading part, wherein the key generation part includes a tamper resistance enhancement processing part for processing the key generation-use data to enhance the tamper resistance making it difficult to break the unique key as tamper resistance enhancement processing. Due to this, it is possible to generate a unique key having a high confidentiality. Further, it is possible to improve reproducibility and uniqueness of the unique ID, is possible to secure a high tamper resistance of the unique key, and consequently is possible to reliably prevent tampering and forgery of an image.Type: GrantFiled: March 21, 2019Date of Patent: November 19, 2019Assignees: Brillnics Japan Inc., The Ritsumeikan TrustInventors: Shunsuke Okura, Masato Yamaguchi, Masayoshi Shirahata, Takeshi Fujino, Mitsuru Shiozaki, Takaya Kubota
-
Patent number: 10382708Abstract: A solid-state imaging device 10 includes a pixel portion 20 in which a plurality of pixels including photodiodes are arranged in rows and columns, a reading part 90 for reading pixel signals from the pixel portion, and a key generation part 82 which generates a unique key by using at least one of pixel fluctuation information or reading part fluctuation information. According to this configuration, the tamper resistance of the unique key can be secured and consequently alteration and falsification of images can be prevented.Type: GrantFiled: March 18, 2016Date of Patent: August 13, 2019Assignees: BRILLNICS INC., THE RITSUMEIKAN TRUSTInventors: Isao Takayanagi, Shunsuke Tanaka, Shinichiro Matsuo, Shunsuke Okura, Shusuke Iwata, Takeshi Fujino, Mitsuru Shiozaki, Takeshi Kumaki, Takaya Kubota, Masayoshi Shirahata
-
Publication number: 20190222789Abstract: A solid-state imaging device having a pixel portion in which a plurality of pixels each including a photodiode are arranged in rows and columns, a reading part for reading pixel signals from the pixel portion, and a key generation part which generates a unique key by using, as the key generation-use data, at least one of fluctuation information of pixels and fluctuation information of the reading part, wherein the key generation part includes a tamper resistance enhancement processing part for processing the key generation-use data to enhance the tamper resistance making it difficult to break the unique key as tamper resistance enhancement processing. Due to this, it is possible to generate a unique key having a high confidentiality. Further, it is possible to improve reproducibility and uniqueness of the unique ID, is possible to secure a high tamper resistance of the unique key, and consequently is possible to reliably prevent tampering and forgery of an image.Type: ApplicationFiled: March 21, 2019Publication date: July 18, 2019Applicants: Brillnics Japan Inc., The Ritsumeikan TrustInventors: Shunsuke Okura, Masato Yamaguchi, Masayoshi Shirahata, Takeshi Fujino, Mitsuru Shiozaki, Takaya Kubota
-
Patent number: 10356353Abstract: A solid-state imaging device having a pixel portion in which a plurality of pixels each including a photodiode are arranged in rows and columns, a reading part for reading pixel signals from the pixel portion, and a key generation part which generates a unique key by using, as the key generation-use data, at least one of fluctuation information of pixels and fluctuation information of the reading part, wherein the key generation part includes a tamper resistance enhancement processing part for processing the key generation-use data to enhance the tamper resistance making it difficult to break the unique key as tamper resistance enhancement processing. Due to this, a unique key having a high confidentiality can be generated. Further, reproducibility and uniqueness of the unique ID can be improved to secure a high tamper resistance of the unique key, and tampering and forgery of an image can be reliably prevented.Type: GrantFiled: January 18, 2018Date of Patent: July 16, 2019Assignees: BRILLNICS JAPAN INC., THE RITSUMEIKAN TRUSTInventors: Shunsuke Okura, Masato Yamaguchi, Masayoshi Shirahata, Takeshi Fujino, Mitsuru Shiozaki, Takaya Kubota
-
Publication number: 20180205901Abstract: A solid-state imaging device having a pixel portion in which a plurality of pixels each including a photodiode are arranged in rows and columns, a reading part for reading pixel signals from the pixel portion, and a key generation part which generates a unique key by using, as the key generation-use data, at least one of fluctuation information of pixels and fluctuation information of the reading part, wherein the key generation part includes a tamper resistance enhancement processing part for processing the key generation-use data to enhance the tamper resistance making it difficult to break the unique key as tamper resistance enhancement processing. Due to this, a unique key having a high confidentiality can be generated. Further, reproducibility and uniqueness of the unique ID can be improved to secure a high tamper resistance of the unique key, and tampering and forgery of an image can be reliably prevented.Type: ApplicationFiled: January 18, 2018Publication date: July 19, 2018Applicants: Brillnics Japan Inc., The Ritsumeikan TrustInventors: Shunsuke Okura, Masato Yamaguchi, Masayoshi Shirahata, Takeshi Fujino, Mitsuru Shiozaki, Takaya Kubota
-
Publication number: 20180115723Abstract: A solid-state imaging device 10 includes a pixel portion 20 in which a plurality of pixels including photodiodes are arranged in rows and columns, a reading part 90 for reading pixel signals from the pixel portion, and a key generation part 82 which generates a unique key by using at least one of pixel fluctuation information or reading part fluctuation information. According to this configuration, the tamper resistance of the unique key can be secured and consequently alteration and falsification of images can be prevented.Type: ApplicationFiled: March 18, 2016Publication date: April 26, 2018Applicants: Brillnics Inc., The Ritsumeikan TrustInventors: Isao Takayanagi, Shunsuke Tanaka, Shinichiro Matsuo, Shunsuke Okura, Shusuke Iwata, Takeshi Fujino, Mitsuru Shiozaki, Takeshi Kumaki, Takaya Kubota, Masayoshi Shirahata
-
Patent number: 8373210Abstract: A semiconductor device includes a pair of electromagnetically coupled inductors. Each of the inductors is comprised of a plurality of through electrodes which extend through a semiconductor substrate, and wires which connect the plurality of through electrodes in series.Type: GrantFiled: April 7, 2010Date of Patent: February 12, 2013Assignee: Elpida Memory, Inc.Inventors: Hiroaki Ikeda, Mitsuru Shiozaki, Atsushi Iwata
-
Publication number: 20100308434Abstract: A semiconductor device includes a pair of electromagnetically coupled inductors. Each of the inductors is comprised of a plurality of through electrodes which extend through a semiconductor substrate, and wires which connect the plurality of through electrodes in series.Type: ApplicationFiled: April 7, 2010Publication date: December 9, 2010Applicant: ELPIDA MEMORY, INC.Inventors: Hiroaki Ikeda, Mitsuru Shiozaki, Atsushi Iwata
-
Patent number: 7538603Abstract: Provided is a grid-type high-speed clock signal distribution network capable of reducing a difference in amplitude of a standing wave on a transmission line and of supplying a signal from any position. The network for transmitting the clock signal is such that ends of the differential signal transmission line are connected via an inductor, a low-amplitude segment is eliminated by a phase shift in the inductor and a standing wave of substantially uniform phase and amplitude is produced, wherein the number of lines connected to the grid point is made the same for entire grid points.Type: GrantFiled: May 4, 2007Date of Patent: May 26, 2009Assignee: Elpida Memory, Inc.Inventors: Hiroaki Ikeda, Mamoru Sasaki, Atsushi Iwata, Mitsuru Shiozaki, Atsushi Mori
-
Publication number: 20070285179Abstract: Provided is a grid-type high-speed clock signal distribution network capable of reducing a difference in amplitude of a standing wave on a transmission line and of supplying a signal from any position. The network for transmitting the clock signal is such that ends of the differential signal transmission line are connected via an inductor, a low-amplitude segment is eliminated by a phase shift in the inductor and a standing wave of substantially uniform phase and amplitude is produced, wherein the number of lines connected to the grid point is made the same for entire grid points.Type: ApplicationFiled: May 4, 2007Publication date: December 13, 2007Applicant: ELPIDA MEMORY, INC.Inventors: Hiroaki Ikeda, Mamoru Sasaki, Atsushi Iwata, Mitsuru Shiozaki, Atsushi Mori
-
Patent number: 6657389Abstract: A glow discharge lamp has a discharge vessel, a pair of electrodes mounted in the discharge vessel, ionizable filling which is principally made of rare gas and filled in the discharge vessel, and emissive material containing zinc alloy and provided on at least one of the electrodes.Type: GrantFiled: May 29, 2002Date of Patent: December 2, 2003Assignee: Toshiba Lighting & Technology CorporationInventors: Akiko Saitou, Shigeru Osawa, Nobuhiro Tamura, Noriyuki Hayama, Yoshiyuki Matsunaga, Takashi Yorifuji, Mitsuru Shiozaki, Masahiro Izumi
-
Publication number: 20020185977Abstract: A glow discharge lamp has a discharge vessel, a pair of electrodes mounted in the discharge vessel, ionizable filling which is principally made of rare gas and filled in the discharge vessel, and emissive material containing zinc alloy and provided on at least one of the electrodes.Type: ApplicationFiled: May 29, 2002Publication date: December 12, 2002Inventors: Akiko Saitou, Shigeru Osawa, Nobuhiro Tamura, Noriyuki Hayama, Yoshiyuki Matsunaga, Takashi Yorifuji, Mitsuru Shiozaki, Masahiro Izumi