Patents by Inventor Mitsuhiro Nagao
Mitsuhiro Nagao 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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Publication number: 20200298345Abstract: A laser processing device configured to emit laser light on an object to perform laser processing of the object, the laser processing device including: a laser output unit configured to output the laser light; a spatial light modulator configured to reflect the laser light output from the laser output unit while modulating the laser light in accordance with a phase pattern; and an objective lens configured to converge the laser light from the spatial light modulator toward the object, in which the spatial light modulator includes an entrance surface, a reflective surface, and a modulation layer configured to display the phase pattern to modulate the laser light, and a dielectric multilayer film having a high reflectance region in a plurality of wavelength bands non-contiguous with each other is formed on the reflective surface.Type: ApplicationFiled: March 28, 2017Publication date: September 24, 2020Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Junji OKUMA, Mitsuhiro NAGAO, Norihiro FUKUCHI, Yasunori IGASAKI
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Publication number: 20190030644Abstract: A laser processing device includes: a device frame; a support unit attached to the device frame and configured to support an object to be processed; a laser output unit attached to the device frame; and a laser converging unit attached to the device frame so as to be movable with respect to the laser output unit. The laser output unit includes a laser light source configured to emit laser light, and the laser converging unit includes: a reflective spatial light modulator configured to reflect the laser light while modulating the laser light; a converging optical system configured to converge the laser light at the object to be processed; and an imaging optical system constituting a double telecentric optical system in which a reflective surface of the reflective spatial light modulator and an entrance pupil plane of the converging optical system are in an imaging relationship.Type: ApplicationFiled: January 24, 2017Publication date: January 31, 2019Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Junji OKUMA, Mitsuhiro NAGAO, Yasunori IGASAKI
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Patent number: 8443131Abstract: Operational information read out by a read-out sense amplifier (19) is transferred via the data line DB to a volatile memory section. The volatile memory section is configured with the volatile memory section (21) having a SRAM configuration and the second volatile memory section (23) configured with latch circuits, both sections respectively connected in parallel with the data line DB. The operational information, which may be provided depending on an operation state of the write-protect information and other information stored in the non-volatile memory cell MC selected by the word line WLWP, is written and read out with respect to the first volatile memory section (21) in response to the identification information linked with the operational information. The operational information which must be constantly accessible, is written into the second volatile memory section (23). Thus, the operational information is available in response to attributes of the operational information.Type: GrantFiled: October 26, 2005Date of Patent: May 14, 2013Assignee: Spansion LLCInventors: Mitsuhiro Nagao, Kenta Kato
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Patent number: 8380917Abstract: Systems, methods, and circuits for command control for synchronous memory device are disclosed. In one embodiment, a memory device comprises a first synchronous memory controlled by a second group of commands which includes a first command receiving section for receiving a first group of commands, and a second command receiving section for receiving a command that is unique to the first synchronous memory and different from the first group of commands during execution of the first group of commands received by the first command receiving section. The synchronous memory further comprises a second synchronous memory controlled by the first group of commands, where the first synchronous memory and the second synchronous memory are coupled to a same data bus, and where the second group of commands is different from the first group of commands.Type: GrantFiled: June 12, 2008Date of Patent: February 19, 2013Assignee: Spansion LLCInventors: Kenji Shibata, Mitsuhiro Nagao, Satoru Kawmoto
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Patent number: 8219743Abstract: The present invention provides a semiconductor device and a method for controlling the semiconductor device, the semiconductor device including memory regions; program prohibition information units storing program prohibition information to be used for determining whether to prohibit or allow programming in the memory regions corresponding to the program prohibition information units; a first prohibition information control circuit that prohibits a change of the program prohibition information from a program prohibiting state with respect to a memory region based on first prohibition information; and a second prohibition information control circuit that prohibits a change of the program prohibition information from a program allowing state to a program prohibiting state with respect to the corresponding memory region based on second prohibition information with respect to the corresponding memory region.Type: GrantFiled: March 21, 2011Date of Patent: July 10, 2012Assignee: Spansion LLCInventors: Kenji Shibata, Masahiko Okura, Mitsuhiro Nagao
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Patent number: 8122204Abstract: Systems and methods for controlling memory devices are disclosed. In one embodiment, a memory system comprises a memory controller for forwarding a command signal and an address signal and for receiving and forwarding a data signal, and a first memory device for receiving the command signal and the address signal from the memory controller, where the first memory device comprises a first command judging circuit for receiving and forwarding the data signal and for decoding the command signal. The memory system further comprises a second memory device for receiving the command signal and the address signal from the memory controller, where the second memory device comprises a second command judging circuit for receiving and generating the data signal and for decoding the command signal. The command signal, the address signal and the data signal are commonly connected to the first memory device and the second memory device.Type: GrantFiled: June 11, 2008Date of Patent: February 21, 2012Assignee: Spansion LLCInventors: Mitsuhiro Nagao, Kenji Shibata, Satoru Kawmoto
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Publication number: 20110173379Abstract: The present invention provides a semiconductor device and a method for controlling the semiconductor device, the semiconductor device including memory regions; program prohibition information units storing program prohibition information to be used for determining whether to prohibit or allow programming in the memory regions corresponding to the program prohibition information units; a first prohibition information control circuit that prohibits a change of the program prohibition information from a program prohibiting state with respect to a memory region based on first prohibition information; and a second prohibition information control circuit that prohibits a change of the program prohibition information from a program allowing state to a program prohibiting state with respect to the corresponding memory region based on second prohibition information with respect to the corresponding memory region.Type: ApplicationFiled: March 21, 2011Publication date: July 14, 2011Inventors: Kenji SHIBATA, Masahiko OKURA, Mitsuhiro NAGAO
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Patent number: 7934051Abstract: The present invention provides a semiconductor device and a method for controlling the semiconductor device, the semiconductor device including memory regions that include nonvolatile memory cells; program prohibition information units, the program prohibition information units storing program prohibition information to be used for determining whether to prohibit or allow programming in a plurality of memory regions corresponding to the program prohibition information units; a first prohibition information control circuit that prohibits a change of the program prohibition information from a program prohibiting state to a program allowing state with respect a memory region, the memory region is one of the plurality of corresponding memory regions, based on first prohibition information to be used for determining whether to prohibit a change of the program prohibition information from a program prohibiting state to a program allowing state with respect to the corresponding memory region; and a second prohibitioType: GrantFiled: February 1, 2008Date of Patent: April 26, 2011Assignee: Spansion LLCInventors: Kenji Shibata, Masahiko Okura, Mitsuhiro Nagao
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Patent number: 7895406Abstract: To provide a memory device and a password storing method thereof, according to which an improved security function is realized by resourcefully designing the storage position and/or storing order of password data stored in the memory device to prevent unauthorized password acquisition. The memory device makes a determination of whether or not rewriting and/or reading of data is permitted by verification of a password, the memory device comprising a plurality of partial memory areas which store a plurality of partial bit strings that comprise a bit string of the password, and wherein the plurality of partial memory areas are located apart from each other in a memory cell array.Type: GrantFiled: November 20, 2007Date of Patent: February 22, 2011Assignee: Spansion LLCInventor: Mitsuhiro Nagao
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Patent number: 7574576Abstract: A semiconductor device includes: a memory cell array that includes non-volatile memory cells; a first memory region and a second memory region that are located in the memory cell array, the first memory region being protected during a protecting period, the second memory region being not protected; an address change circuit that changes an address in an address space of the first memory region and the second memory region in the memory cell array, to an address in an address space of the second memory region, during the protecting period; and a control circuit that prohibits access to the first memory region, and allows access to the second region, during the protecting period.Type: GrantFiled: December 22, 2006Date of Patent: August 11, 2009Assignee: Spansion LLCInventors: Kenta Kato, Masahiko Okura, Kenji Shibata, Mitsuhiro Nagao, Stewart Wang
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Patent number: 7565477Abstract: A semiconductor device includes: memory regions that include non-volatile memory cells; disabling information memory units that correspond to the memory regions, each of the disabling information memory units storing first program disabling information indicating whether programming is to be disabled or enabled in each corresponding memory region; a program disabling information selection circuit that outputs second program disabling information for disabling programming in a corresponding memory region, regardless of the first program disabling information, when programming is disabled collectively in the memory regions in accordance with collective program disabling information indicating whether programming is to be disabled collectively in the memory regions, the program disabling information selection circuit outputting the first program disabling information as the second program disabling information when programming is not collectively disabled; and a program control circuit that disables or enables pType: GrantFiled: December 22, 2006Date of Patent: July 21, 2009Assignee: Spansion LLCInventors: Kenji Shibata, Masahiko Okura, Kenta Kato, Mitsuhiro Nagao, Stewart Wang, Katherine Butler, Cheung Nga Tik
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Patent number: 7564720Abstract: A nonvolatile storage including a plurality of blocks each serving as one unit in erasing operation and performs a plurality of erasing operations successively, the nonvolatile storage comprising: a volatile memory cell array for storing erase setting information on each block, the information indicating whether or not its associated block is a target to be erased; a write amplifier for writing the erase setting information in the volatile memory cell array; a first readout amplifier for reading out the erase setting information on a target block from the volatile memory cell array upon start of the erasing operation; and a second readout amplifier for reading out the erase setting information on a target block from the volatile memory cell array upon start of readout operation.Type: GrantFiled: July 18, 2007Date of Patent: July 21, 2009Assignee: Spansion LLCInventors: Mitsuhiro Nagao, Masahiro Niimi, Kenji Nagai
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Publication number: 20090150701Abstract: Systems and methods for controlling memory devices are disclosed. In one embodiment, a memory system comprises a memory controller for forwarding a command signal and an address signal and for receiving and forwarding a data signal, and a first memory device for receiving the command signal and the address signal from the memory controller, where the first memory device comprises a first command judging circuit for receiving and forwarding the data signal and for decoding the command signal. The memory system further comprises a second memory device for receiving the command signal and the address signal from the memory controller, where the second memory device comprises a second command judging circuit for receiving and generating the data signal and for decoding the command signal. The command signal, the address signal and the data signal are commonly connected to the first memory device and the second memory device.Type: ApplicationFiled: June 11, 2008Publication date: June 11, 2009Inventors: Mitsuhiro NAGAO, Kenji SHIBATA, Satoru KAWMOTO
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Publication number: 20090150635Abstract: Systems, methods, and circuits for command control for synchronous memory device are disclosed. In one embodiment, a memory device comprises a first synchronous memory controlled by a second group of commands which includes a first command receiving section for receiving a first group of commands, and a second command receiving section for receiving a command that is unique to the first synchronous memory and different from the first group of commands during execution of the first group of commands received by the first command receiving section. The synchronous memory further comprises a second synchronous memory controlled by the first group of commands, where the first synchronous memory and the second synchronous memory are coupled to a same data bus, and where the second group of commands is different from the first group of commands.Type: ApplicationFiled: June 12, 2008Publication date: June 11, 2009Inventors: Kenji SHIBATA, Mitsuhiro NAGAO, Satoru KAWAMOTO
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Publication number: 20090049253Abstract: The present invention provides a semiconductor device and a method for controlling the semiconductor device, the semiconductor device including memory regions that include nonvolatile memory cells; program prohibition information units, the program prohibition information units storing program prohibition information to be used for determining whether to prohibit or allow programming in a plurality of memory regions corresponding to the program prohibition information units; a first prohibition information control circuit that prohibits a change of the program prohibition information from a program prohibiting state to a program allowing state with respect a memory region, the memory region is one of the plurality of corresponding memory regions, based on first prohibition information to be used for determining whether to prohibit a change of the program prohibition information from a program prohibiting state to a program allowing state with respect to the corresponding memory region; and a second prohibitioType: ApplicationFiled: February 1, 2008Publication date: February 19, 2009Inventors: Kenji Shibata, Masahiko Okura, Mitsuhiro Nagao
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Patent number: 7436715Abstract: In a memory cell array, aside from a normal-data storing region, a control-information storing region is also allocated, and the control-information storing region is composed of a predetermined number of control-information storing memory cells in each bit of control information, and same bit data is stored in the predetermined number of control-information storing memory cells, and the data is read out simultaneously at the time of reading out. When being read-out the control information, since data is read out simultaneously from the predetermined number of memory cells, the driving capacity of reading route when reading out is reinforced. Reading time of control information being read out at the time of turning on the power or initializing after resetting can be shortened, and the operation can be quickly transferred to normal access action.Type: GrantFiled: June 30, 2006Date of Patent: October 14, 2008Assignee: Spansion LLCInventors: Kenta Kato, Mitsuhiro Nagao
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Publication number: 20080155217Abstract: A semiconductor device includes: a memory cell array that includes non-volatile memory cells; a first memory region and a second memory region that are located in the memory cell array, the first memory region being protected during a protecting period, the second memory region being not protected; an address change circuit that changes an address in an address space of the first memory region and the second memory region in the memory cell array, to an address in an address space of the second memory region, during the protecting period; and a control circuit that prohibits access to the first memory region, and allows access to the second region, during the protecting period.Type: ApplicationFiled: December 22, 2006Publication date: June 26, 2008Inventors: Kenta Kato, Masahiko Okura, Kenji Shibata, Mitsuhiro Nagao, Stewart Wang
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Publication number: 20080155180Abstract: A semiconductor device includes: memory regions that include non-volatile memory cells; disabling information memory units that correspond to the memory regions, each of the disabling information memory units storing first program disabling information indicating whether programming is to be disabled or enabled in each corresponding memory region; a program disabling information selection circuit that outputs second program disabling information for disabling programming in a corresponding memory region, regardless of the first program disabling information, when programming is disabled collectively in the memory regions in accordance with collective program disabling information indicating whether programming is to be disabled collectively in the memory regions, the program disabling information selection circuit outputting the first program disabling information as the second program disabling information when programming is not collectively disabled; and a program control circuit that disables or enables pType: ApplicationFiled: December 22, 2006Publication date: June 26, 2008Inventors: Kenji Shibata, Masahiko Okura, Kenta Kato, Mitsuhiro Nagao, Stewart Wang, Katherine Butler, Cheung Nga Tik
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Publication number: 20080147967Abstract: To provide a memory device and a password storing method thereof, according to which an improved security function is realized by resourcefully designing the storage position and/or storing order of password data stored in the memory device to prevent unauthorized password acquisition. The memory device makes a determination of whether or not rewriting and/or reading of data is permitted by verification of a password, the memory device comprising a plurality of partial memory areas which store a plurality of partial bit strings that comprise a bit string of the password, and wherein the plurality of partial memory areas are located apart from each other in a memory cell array.Type: ApplicationFiled: November 20, 2007Publication date: June 19, 2008Inventor: Mitsuhiro Nagao
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Publication number: 20080049503Abstract: A nonvolatile storage is disclosed which has a plurality of blocks each serving as one unit in erasing operation and performs a plurality of erasing operations successively, the nonvolatile storage comprising: a volatile memory cell array for storing erase setting information on each block, the information indicating whether or not its associated block is a target to be erased; a write amplifier for writing the erase setting information in the volatile memory cell array; a first readout amplifier for reading out the erase setting information on a target block from the volatile memory cell array upon start of the erasing operation; and a second readout amplifier for reading out the erase setting information on a target block from the volatile memory cell array upon start of readout operation.Type: ApplicationFiled: July 18, 2007Publication date: February 28, 2008Inventors: Mitsuhiro Nagao, Masahiro Niimi, Kenji Nagai