Patents by Inventor Yosio Takaya
Yosio Takaya 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).
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Patent number: 6421279Abstract: A semiconductor file system features a first nonvolatile memory electrically erasable, a second nonvolatile memory not electrically erasable, a volatile memory, a controller, and a control section which controls the controller wherein a physical address corresponding to a logical address specified from an external system is accessed. The first nonvolatile memory stores data for the external system to perform operations, first management information indicating correspondence between physical and logical addresses, and second management information indicating a state of the first nonvolatile memory. The second nonvolatile memory previously stores interface information. The controller determines a physical sector address.Type: GrantFiled: August 13, 2001Date of Patent: July 16, 2002Assignees: Hitachi, Ltd., Hitachi Keiyo Engineering Co., Ltd., Hitachi USLI Engineering Corp.Inventors: Tsunehiro Tobita, Jun Kitahara, Takashi Tsunehiro, Kunihiro Katayama, Ryuichi Hattori, Yukihiro Seki, Hajime Yamagami, Takashi Totsuka, Takeshi Wada, Yosio Takaya, Manabu Saito, Kenichi Kaki, Takao Okubo, Takashi Kikuchi, Masamichi Kishi, Takeshi Suzuki, Shigeru Kadowaki
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Publication number: 20020051394Abstract: A semiconductor file system features a first nonvolatile memory electrically erasable, a second nonvolatile memory not electrically erasable, a volatile memory, a controller, and a control section which controls the controller wherein a physical address corresponding to a logical address specified from an external system is accessed. The first nonvolatile memory stores data for the external system to perform operations, first management information indicating correspondence between physical and logical addresses, and second management information indicating a state of the first nonvolatile memory. The second nonvolatile memory previously stores interface information. The controller determines a physical sector address.Type: ApplicationFiled: August 13, 2001Publication date: May 2, 2002Inventors: Tsunehiro Tobita, Jun Kitahara, Takashi Tsunehiro, Kunihiro Katayama, Ryuichi Hattori, Yukihiro Seki, Hajime Yamagami, Takashi Totsuka, Takeshi Wada, Yosio Takaya, Manabu Saito, Kenichi Kaki, Takao Okubo, Takashi Kikuchi, Masamichi Kishi, Takeshi Suzuki, Shigeru Kadowaki
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Patent number: 6275436Abstract: A control method and system when a flash memory is used. as a semiconductor disk or a main memory in an information processing system. A semiconductor file system comprises a first nonvolatile memory electrically erasable, a second nonvolatile memory not electrically erasable, a volatile memory, a controller which controls the memories, and a control section which controls the controller wherein a physical address corresponding to a logical address specified from an external system is accessed. The first nonvolatile memory stores data for the external system to perform operations, first management information indicating the correspondence between physical addresses at which the data is stored and logical addresses, and second management information indicating a state of the first nonvolatile memory. The second nonvolatile memory previously stores interface information required for inputting and outputting the data from and to the external system and read-only data of the data.Type: GrantFiled: May 23, 2000Date of Patent: August 14, 2001Assignees: Hitachi, LTD, Hitachi Keiyo Engineering Co., Ltd., Hitachi ULSI Engineering Corp.Inventors: Tsunehiro Tobita, Jun Kitahara, Takashi Tsunehiro, Kunihiro Katayama, Ryuichi Hattori, Yukihiro Seki, Hajime Yamagami, Takashi Totsuka, Takeshi Wada, Yosio Takaya, Manabu Saito, Kenichi Kaki, Takao Okubo, Takashi Kikuchi, Masamichi Kishi, Takeshi Suzuki, Shigeru Kadowaki
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Patent number: 6078520Abstract: A control method and system when a flash memory is used as a semiconductor disk or a main memory in an information processing system. A semiconductor file system comprises a first nonvolatile memory electrically erasable, a second nonvolatile memory not electrically erasable, a volatile memory, a controller which controls the memories, and a control section which controls the controller wherein a physical address corresponding to a logical address specified from an external system is accessed. The first nonvolatile memory stores data for the external system to perform operations, first management information indicating the correspondence between physical addresses at which the data is stored and logical addresses, and second management information indicating a state of the first nonvolatile memory. The second nonvolatile memory previously stores interface information required for inputting and outputting the data from and to the external system and read-only data of the data.Type: GrantFiled: July 21, 1999Date of Patent: June 20, 2000Assignees: Hitachi, Ltd., Hitachi Keiyo Engineering Co., Ltd., Hitachi ULSIInventors: Tsunehiro Tobita, Jun Kitahara, Takashi Tsunehiro, Kunihiro Katayama, Ryuichi Hattori, Yukihiro Seki, Hajime Yamagami, Takashi Totsuka, Takeshi Wada, Yosio Takaya, Manabu Saito, Kenichi Kaki, Takao Okubo, Takashi Kikuchi, Masamichi Kishi, Takeshi Suzuki, Shigeru Kadowaki
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Patent number: 5973964Abstract: A control method and system when a flash memory is used as a semiconductor disk or a main memory in an information processing system. A semiconductor file system comprises a first nonvolatile memory electrically erasable, a second nonvolatile memory not electrically erasable, a volatile memory, a controller which controls the memories, and a control section which controls the controller wherein a physical address corresponding to a logical address specified from an external system is accessed. The first nonvolatile memory stores data for the external system to perform operations, first management information indicating the correspondence between physical addresses at which the data is stored and logical addresses, and second management information indicating a state of the first nonvolatile memory. The second nonvolatile memory previously stores interface information required for inputting and outputting the data from and to the external system and read-only data of the data.Type: GrantFiled: October 30, 1998Date of Patent: October 26, 1999Assignees: Hitachi, Ltd., Hitachi Keiyo Engineering Co., Ltd., Hitachi ULSI Engineering Co., Ltd.Inventors: Tsunehiro Tobita, Jun Kitahara, Takashi Tsunehiro, Kunihiro Katayama, Ryuichi Hattori, Yukihiro Seki, Hajime Yamagami, Takashi Totsuka, Takeshi Wada, Yosio Takaya, Manabu Saito, Kenichi Kaki, Takao Okubo, Takashi Kikuchi, Masamichi Kishi, Takeshi Suzuki, Shigeru Kadowaki
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Patent number: 5862083Abstract: A control method and system when a flash memory is used as a semiconductor disk or a main memory in an information processing system. A semiconductor file system comprises a first nonvolatile memory electrically erasable, a second nonvolatile memory not electrically erasable, a volatile memory, a controller which controls the memories, and a control section which controls the controller wherein a physical address corresponding to a logical address specified from an external system is accessed. The first nonvolatile memory stores data for the external system to perform operations, first management information indicating the correspondence between physical addresses at which the data is stored and logical addresses, and second management information indicating a state of the first nonvolatile memory. The second nonvolatile memory previously stores interface information required for inputting and outputting the data from and to the external system and read-only data of the data.Type: GrantFiled: April 30, 1996Date of Patent: January 19, 1999Assignees: Hitachi, Ltd., Hitachi Keiyo Engineering Co., Ltd., Hitachi ULSI Engineering Corp.Inventors: Tsunehiro Tobita, Jun Kitahara, Takashi Tsunehiro, Kunihiro Katayama, Ryuichi Hattori, Yukihiro Seki, Hajime Yamagami, Takashi Totsuka, Takeshi Wada, Yosio Takaya, Manabu Saito, Kenichi Kaki, Takao Okubo, Takashi Kikuchi, Masamichi Kishi, Takeshi Suzuki, Shigeru Kadowaki
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Patent number: 5530673Abstract: A control method and system when a flash memory is used as a semiconductor disk or a main memory in an information processing system. A semiconductor file system comprises a first nonvolatile memory electrically erasable, a second nonvolatile memory not electrically erasable, a volatile memory, a controller which controls the memories, and a control section which controls the controller wherein a physical address corresponding to a logical address specified from an external system is accessed. The first nonvolatile memory stores data for the external system to perform operations, first management information indicating the correspondence between physical addresses at which the data is stored and logical addresses, and second management information indicating a state of the first nonvolatile memory. The second nonvolatile memory previously stores interface information required for inputting and outputting the data from and to the external system and read-only data of the data.Type: GrantFiled: April 8, 1994Date of Patent: June 25, 1996Assignees: Hitachi, Ltd., Hitachi Keiyo Engineering Co., Ltd., Hitachi ULSI Engineering Corp.Inventors: Tsunehiro Tobita, Jun Kitahara, Takashi Tsunehiro, Kunihiro Katayama, Ryuichi Hattori, Yukihiro Seki, Hajime Yamagami, Takashi Totsuka, Takeshi Wada, Yosio Takaya, Manabu Saito, Kenichi Kaki, Takao Okubo, Takashi Kikuchi, Masamichi Kishi, Takeshi Suzuki, Shigeru Kadowaki