Patents by Inventor Junichi KIJIMA
Junichi KIJIMA 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: 10803950Abstract: According to one embodiment, a memory controller transmits a first instruction to a memory device. The memory device includes cell transistors; word lines coupled to gates of the cell transistors; a first data latch; and a second latch. The first instruction instructs application of a positive voltage to one of the word lines. The memory controller transmits a second instruction after the transmission of the first instruction and before transmitting a third instruction. The third instruction instructs output of data from the memory device. The second instruction is different from the third instruction and a fourth instruction instructing copy of data from the first data latch to the second data latch.Type: GrantFiled: May 23, 2019Date of Patent: October 13, 2020Assignee: Toshiba Memory CorporationInventors: Yasuhiro Shimura, Tomoki Higashi, Sumito Ohtsuki, Junichi Kijima, Keisuke Yonehama, Shinichi Oosera, Yuki Kanamori, Hidehiro Shiga, Koki Ueno
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Publication number: 20190279716Abstract: According to one embodiment, a memory controller transmits a first instruction to a memory device. The memory device includes cell transistors; word lines coupled to gates of the cell transistors; a first data latch; and a second latch. The first instruction instructs application of a positive voltage to one of the word lines. The memory controller transmits a second instruction after the transmission of the first instruction and before transmitting a third instruction. The third instruction instructs output of data from the memory device. The second instruction is different from the third instruction and a fourth instruction instructing copy of data from the first data latch to the second data latch.Type: ApplicationFiled: May 23, 2019Publication date: September 12, 2019Applicant: Toshiba Memory CorporationInventors: Yasuhiro Shimura, Tomoki Higashi, Sumito Ohtsuki, Junichi Kijima, Keisuke Yonehama, Shinichi Oosera, Yuki Kanamori, Hidehiro Shiga, Koki Ueno
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Patent number: 10347338Abstract: According to one embodiment, a memory controller transmits a first instruction to a memory device. The memory device includes cell transistors; word lines coupled to gates of the cell transistors; a first data latch; and a second latch. The first instruction instructs application of a positive voltage to one of the word lines. The memory controller transmits a second instruction after the transmission of the first instruction and before transmitting a third instruction. The third instruction instructs output of data from the memory device. The second instruction is different from the third instruction and a fourth instruction instructing copy of data from the first data latch to the second data latch.Type: GrantFiled: September 8, 2017Date of Patent: July 9, 2019Assignee: Toshiba Memory CorporationInventors: Yasuhiro Shimura, Tomoki Higashi, Sumito Ohtsuki, Junichi Kijima, Keisuke Yonehama, Shinichi Oosera, Yuki Kanamori, Hidehiro Shiga, Koki Ueno
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Patent number: 10255979Abstract: According to one embodiment, a semiconductor memory device includes: a memory cell array including a plurality of memory strings, each of the memory strings including a plurality of memory cells connected in series; a plurality of word lines commonly connected to the memory strings and connected to the memory cells; and a control circuit which executes a write operation including a plurality of program loops, each of the program loops including a program operation and a verify operation. When a suspend command for instructing an operation suspend is externally received during execution of the program operation, the control circuit executes a dummy read operation in which the word lines are applied with a voltage after the program operation, and enters into a suspend mode after the dummy read operation.Type: GrantFiled: March 9, 2018Date of Patent: April 9, 2019Assignee: Toshiba Memory CorporationInventors: Yasuhiro Shimura, Shinichi Oosera, Junichi Kijima, Tomoki Higashi, Sumito Ohtsuki, Tomohiro Oda, Keisuke Yonehama
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Publication number: 20190088342Abstract: According to one embodiment, a semiconductor memory device includes: a memory cell array including a plurality of memory strings, each of the memory strings including a plurality of memory cells connected in series; a plurality of word lines commonly connected to the memory strings and connected to the memory cells; and a control circuit which executes a write operation including a plurality of program loops, each of the program loops including a program operation and a verify operation. When a suspend command for instructing an operation suspend is externally received during execution of the program operation, the control circuit executes a dummy read operation in which the word lines are applied with a voltage after the program operation, and enters into a suspend mode after the dummy read operation.Type: ApplicationFiled: March 9, 2018Publication date: March 21, 2019Applicant: Toshiba Memory CorporationInventors: Yasuhiro SHIMURA, Shinichi Oosera, Junichi Kijima, Tomoki Higashi, Sumito Ohtsuki, Tomohiro Oda, Keisuke Yonehama
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Publication number: 20180268906Abstract: According to one embodiment, a memory controller transmits a first instruction to a memory device. The memory device includes cell transistors; word lines coupled to gates of the cell transistors; a first data latch; and a second latch. The first instruction instructs application of a positive voltage to one of the word lines. The memory controller transmits a second instruction after the transmission of the first instruction and before transmitting a third instruction. The third instruction instructs output of data from the memory device. The second instruction is different from the third instruction and a fourth instruction instructing copy of data from the first data latch to the second data latch.Type: ApplicationFiled: September 8, 2017Publication date: September 20, 2018Applicant: Toshiba Memory CorporationInventors: Yasuhiro SHIMURA, Tomoki HIGASHI, Sumito OHTSUKI, Junichi KIJIMA, Keisuke YONEHAMA, Shinichi OOSERA, Yuki KANAMORI, Hidehiro SHIGA, Koki UENO