Patents by Inventor Kenichiro Yamada
Kenichiro Yamada 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: 10139290Abstract: Provided is an optical temperature sensor including a temperature sensing element having light transmission characteristics that vary with temperature, a hollow holding member that holds the temperature sensing element, and an optical fiber that is arranged inside the holding member, the optical fiber including a tip face that is disposed to face the temperature sensing element at a position separated from the temperature sensing element by a predetermined distance. The temperature sensing element allows light emitted from the tip face of the optical fiber to be incident thereon, allows the incident light to be transmitted therethrough, and allows reflected light of the transmitted light that has been reflected by a measuring object to be transmitted therethrough.Type: GrantFiled: March 2, 2015Date of Patent: November 27, 2018Assignee: Tokyo Electron LimitedInventors: Takari Yamamoto, Kenichiro Yamada, Yoshiki Yamakawa, Yuji Mizuma, Hirokazu Taniguchi, Masatoshi Tabira
-
Patent number: 10139289Abstract: A temperature measurement device includes a light emitting part including a first light source configured to output measurement light with a first wavelength and a second light source configured to output reference light with a second wavelength, a light receiving part configured to receive reflected light of the measurement light and reflected light of the reference light that have passed through a temperature sensing device that changes light transmission characteristics with changes in temperature, a control part configured to measure a temperature detected by the temperature sensing device based on an amount of light of the received reflected light of the measurement light and an amount of light of the received reflected light of the reference light, and a temperature adjustment part configured to separately adjust the temperature of the first light source and the temperature of the second light source.Type: GrantFiled: February 25, 2015Date of Patent: November 27, 2018Assignee: Tokyo Electron LimitedInventors: Takari Yamamoto, Kenichiro Yamada, Shinya Yamanaka
-
Publication number: 20180296094Abstract: An object of the invention is to provide a technology for further improving scanning performance. Provided is an optical scanning device including: a scanning unit including an optical waveguide configured to guide incident light and emit the light from an emission end, and a vibration unit configured to generate a vibration and vibrate the emission end; and a signal transmission unit configured to transmit a signal to the scanning unit and cause the scanning unit to scan an object, characterized in that the scanning unit includes a first bonding and vibration attenuating unit configured to bond, with an elastic member, an end surface of the vibration unit closer to the emission end and the optical waveguide.Type: ApplicationFiled: March 24, 2016Publication date: October 18, 2018Inventors: Toshiteru NAKAMURA, Satoshi OUCHI, Yoshiho SEO, Kouji FUJITA, Shinsuke ONOE, Kenichiro YAMADA, Tomoto KAWAMURA
-
Publication number: 20180268848Abstract: A magnetic recording apparatus includes a magnetic recording medium; a magnetic recording head including a first magnetic pole part, a second magnetic pole part, and a magnetic flux control part provided between the first magnetic pole part and the second magnetic pole part, wherein the magnetic flux control part includes a first layer provided between the first magnetic pole part and the second magnetic pole part, a second layer provided between the first magnetic pole part and the first layer, and a third layer provided between the second magnetic pole part and the first layer; an electrode for applying a current to the magnetic flux control part; and an electric circuit for energizing the current to the electrode, wherein an oscillation frequency of magnetization of the magnetic layer is greater than a ferromagnetic resonance frequency of the magnetic recording medium.Type: ApplicationFiled: August 28, 2017Publication date: September 20, 2018Applicant: Kabushiki Kaisha ToshibaInventors: Naoyuki Narita, Masayuki Takagishi, Kenichiro Yamada, Tomoyuki Maeda, Akihiko Takeo
-
Publication number: 20180261241Abstract: According to one embodiment, a magnetic head includes a magnetic pole, and a first shield, and a stacked body provided between the magnetic pole and the first shield. The stacked body includes a first layer, a second layer and a third layer. The first layer includes at least one first element selected from the group consisting of Fe, Co, and Ni. The second layer is provided between the magnetic pole and the first layer, and includes at least one second element selected from the group consisting of Cr, V, Mn, Ti, and Sc. The third layer is provided between the first layer and the first shield, and includes at least one third element selected from the group consisting of Cr, V, Mn, Ti, and Sc.Type: ApplicationFiled: September 13, 2017Publication date: September 13, 2018Applicant: Kabushiki Kaisha ToshibaInventors: Naoyuki NARITA, Hitoshi IWASAKI, Mariko SHIMIZU, Katsuhiko KOUI, Kenichiro YAMADA
-
Publication number: 20180205854Abstract: An optical scanning device for displaying or capturing an image is used, the device including: an optical scanning unit configured to scan emitted light while drawing a spiral trajectory, wherein the unit includes: a light guide path configured to guide incident light to output the emitted light from an emission end; and a vibration unit configured to vibrate the emission end; a light emission control unit configured to control light emission of the emitted light; a polar coordinate generation unit configured to generate a radius and a deflection angle relating to the spiral trajectory; a driving signal generation unit configured to generate a driving signal for driving the vibration unit; an angle correction unit configured to perform calculation for correcting an angle based on information from the driving signal generation unit and output an corrected angle; and a coordinate calculation unit configured to calculate coordinates of an image.Type: ApplicationFiled: January 12, 2018Publication date: July 19, 2018Inventors: Shinsuke ONOE, Toshiteru NAKAMURA, Kenichiro YAMADA, Takahiro MATSUDA, Yoshiho SEO
-
Patent number: 10002637Abstract: According to one embodiment, a magnetic recording and reproducing device which has a magnetic recording medium, a magnetic head, and a recording current output unit. Magnetic data is recorded on the magnetic recording medium. The magnetic head records the magnetic data on the magnetic recording medium. The recording current output unit supplies a recording current to the magnetic head so as to magnetize the magnetic head. A waveform of the recording current has a first slope for a first period to record data of first information continuously and a second slope for a following second period to switch the data to data of second information and to record the data of the second information. The first slope and the second slope are different from each other.Type: GrantFiled: February 28, 2017Date of Patent: June 19, 2018Assignee: Kabushiki Kaisha ToshibaInventors: Naoyuki Narita, Kenichiro Yamada, Masayuki Takagishi, Tomoko Taguchi
-
Patent number: 9978404Abstract: According to one embodiment, a magnetic recording head includes an air bearing surface, a magnetic pole having a distal end portion, a write shield opposed to the distal end portion of the magnetic pole across a write gap, and a high-frequency oscillator between the magnetic pole and the write shield in the write gap. The high-frequency oscillator includes a spin injection layer, an intermediate layer and an oscillation layer which are stacked in a head travel direction. A film thickness of the spin injection layer in the head travel direction at a height position away from the air bearing surface is greater than a film thickness of the spin injection layer in the head travel direction on the air bearing surface.Type: GrantFiled: July 13, 2015Date of Patent: May 22, 2018Assignee: Kabushiki Kaisha ToshibaInventors: Tomoko Taguchi, Yusuke Tomoda, Kenichiro Yamada, Satoshi Shirotori, Naoyuki Narita
-
Publication number: 20180114539Abstract: According to one embodiment, a magnetic recording head includes a magnetic pole, a stacked body, and a first non-magnetic layer. The stacked body includes a first magnetic layer, a second magnetic layer provided between the first magnetic layer and the magnetic pole, and a non-magnetic intermediate layer provided between the first magnetic layer and the second magnetic layer. The first non-magnetic layer is provided between the second magnetic layer and the magnetic pole, and contacts the magnetic pole and the second magnetic layer. The first magnetic layer has a first thickness and a first saturation magnetic flux density. The second magnetic layer has a second thickness and a second saturation magnetic flux density. A second product of the second thickness and the second saturation magnetic flux density is larger than a first product of the first thickness and the first saturation magnetic flux density.Type: ApplicationFiled: December 14, 2017Publication date: April 26, 2018Applicant: Kabushiki Kaisha ToshibaInventors: Kenichiro Yamada, Shuichi Murakami, Naoyuki Narita, Katsuhiko Koui, Akihiko Takeo, Mariko Shimizu, Hitoshi Iwasaki
-
Publication number: 20180090167Abstract: According to one embodiment, a magnetic recording and reproducing device which has a magnetic recording medium, a magnetic head, and a recording current output unit. Magnetic data is recorded on the magnetic recording medium. The magnetic head records the magnetic data on the magnetic recording medium. The recording current output unit supplies a recording current to the magnetic head so as to magnetize the magnetic head. A waveform of the recording current has a first slope for a first period to record data of first information continuously and a second slope for a following second period to switch the data to data of second information and to record the data of the second information. The first slope and the second slope are different from each other.Type: ApplicationFiled: February 28, 2017Publication date: March 29, 2018Applicant: Kabushiki Kaisha ToshibaInventors: Naoyuki Narita, Kenichiro Yamada, Masayuki Takagishi, Tomoko Taguchi
-
Patent number: 9922674Abstract: A magnetic recording and reproducing device according to an embodiment includes a magnetic recording medium and a controller. The magnetic recording medium includes in sequence a substrate, a storage layer, an exchange layer, and a surface recording layer. The controller executes following steps (1) to (6): (1) magnetically recording first information on the surface recording layer; (2) transferring the first information recorded on the surface recording layer to the storage layer; (3) magnetically recording second information on the surface recording layer; (4) magnetically reproducing the second information from the surface recording layer; (5) transferring the first information recorded on the storage layer to the surface recording layer; and (6) magnetically reproducing the first information transferred to the surface recording layer.Type: GrantFiled: June 11, 2015Date of Patent: March 20, 2018Assignee: Kabushiki Kaisha ToshibaInventors: Akira Kikitsu, Tomoyuki Maeda, Masayuki Takagishi, Kenichiro Yamada
-
Publication number: 20180075868Abstract: A magnetic recording head includes a main magnetic pole extending to an air bearing surface of the magnetic recording head and having an end portion that is exposed at the air bearing surface, a magnetic shield having an end portion that is exposed at the air bearing surface and faces the end portion of the main magnetic pole with a gap therebetween, a stacked-layer element disposed in the gap, and including a first conductive layer in contact the main magnetic pole, a second conductive layer in contact with the magnetic shield, and an magnetic permeability adjusting layer disposed between the first conductive layer and the second conductive layer, and first and second terminals between which a current flows through the main magnetic pole, the stacked-layer element, and the magnetic shield when the current is supplied to one of the terminals.Type: ApplicationFiled: February 28, 2017Publication date: March 15, 2018Inventors: Katsuhiko KOUI, Kenichiro YAMADA, Tomoko TAGUCHI
-
Publication number: 20180068679Abstract: According to one embodiment, a magnetic head includes a magnetic pole, and a coil. The coil includes a first coil portion separated from the magnetic pole in a first direction. The magnetic pole includes a magnetic pole end portion, and first and second magnetic pole edge portions connected to the magnetic pole end portion. The first coil portion includes first and second coil edge portions, and a third coil edge portion overlapping the magnetic pole and being connected to the first and second coil edge portions. The first magnetic pole edge portion includes a first magnetic pole overlap portion overlapping the first coil edge portion. The second magnetic pole edge portion includes a second magnetic pole overlap portion overlapping the second coil edge portion. The magnetic pole end portion has a magnetic pole end portion center in a second direction connecting the first and second magnetic pole overlap portions.Type: ApplicationFiled: February 27, 2017Publication date: March 8, 2018Applicant: Kabushiki Kaisha ToshibaInventors: Masayuki TAKAGISHI, Kenichiro YAMADA, Naoyuki NARITA, Tomoyuki MAEDA, Katsuya SUGAWARA, Yousuke ISOWAKI
-
Patent number: 9886971Abstract: According to one embodiment, a magnetic recording head includes a magnetic pole, a stacked body, and a first non-magnetic layer. The stacked body includes a first magnetic layer, a second magnetic layer provided between the first magnetic layer and the magnetic pole, and a non-magnetic intermediate layer provided between the first magnetic layer and the second magnetic layer. The first non-magnetic layer is provided between the second magnetic layer and the magnetic pole, and contacts the magnetic pole and the second magnetic layer. The first magnetic layer has a first thickness and a first saturation magnetic flux density. The second magnetic layer has a second thickness and a second saturation magnetic flux density. A second product of the second thickness and the second saturation magnetic flux density is larger than a first product of the first thickness and the first saturation magnetic flux density.Type: GrantFiled: September 1, 2016Date of Patent: February 6, 2018Assignee: Kabushiki Kaisha ToshibaInventors: Kenichiro Yamada, Shuichi Murakami, Naoyuki Narita, Katsuhiko Koui, Akihiko Takeo, Mariko Shimizu, Hitoshi Iwasaki
-
Patent number: 9885612Abstract: An optical temperature sensor includes an light-emitting-side measurement unit to measure a first light intensity of a measuring beam and a second light intensity of a reference beam, and a light-receiving-side measurement unit to measure a third light intensity of a first reflected beam of the measuring beam and a fourth light intensity of a second reflected beam of the reference beam. The optical temperature sensor further includes a control unit to adjust at least one of a first control target value of the first light intensity and a second control target value of the second light intensity based on at least one of the third light intensity and the fourth light intensity. The control unit controls at least one of the first light intensity and the second light intensity based on the adjusted at least one of the first and second control target values.Type: GrantFiled: July 21, 2015Date of Patent: February 6, 2018Assignee: Tokyo Electron LimitedInventors: Kenichiro Yamada, Takari Yamamoto
-
Publication number: 20170372928Abstract: Disclosed is a substrate processing system including a substrate processing apparatus; and a control device that controls the substrate processing apparatus. The substrate processing apparatus includes: a chamber; a placing table provided within the chamber; and heaters embedded in the placing table corresponding to division regions, respectively. The control device includes: a holding unit that holds a table for each of the division regions; a measuring unit that measures the resistance value of each of the heaters embedded in the placing table for each of the division regions; and a controller that estimates a temperature of each of the division regions corresponding to the resistance value of each of the heaters measured by the measuring unit with reference to the table for each of the division regions, and controls an electric power to be supplied to each of the heaters so that the estimated temperature becomes a target temperature.Type: ApplicationFiled: June 22, 2017Publication date: December 28, 2017Applicant: TOKYO ELECTRON LIMITEDInventors: Kenichiro YAMADA, Satoru TERUUCHI, Kenichiro NAKAMURA, Takari YAMAMOTO
-
Patent number: 9824724Abstract: According to one embodiment, a magnetic recording and reproducing device includes a magnetic recording medium including a plurality of recording tracks, a magnetic head, and a controller. The plurality of recording tracks includes a first track. The controller causes the magnetic head to implement a first recording operation of recording first information in at least two of a plurality of first track recording components included in the first track. The controller causes the magnetic head to implement a first reproduction operation of reproducing the first information from a first information reproducing/recording component of one of the at least two of the plurality of first track recording components.Type: GrantFiled: August 23, 2016Date of Patent: November 21, 2017Assignee: Kabushiki Kaisha ToshibaInventors: Katsuya Sugawara, Kenichiro Yamada
-
Patent number: 9824703Abstract: According to one embodiment, a magnetic recording and reproducing device includes a magnetic recording medium, a magnetic head, and a processor. The magnetic head includes a first reproducing element portion and a second reproducing element portion. The processor is configured to acquire a first signal and a second signal, and to output an output signal according to either one of the first signal and the second signal. The first signal is obtained by reproducing information recorded on a first recording region by the first reproducing element portion. The second signal is obtained by reproducing the information recorded on the first recording region by the second reproducing element portion.Type: GrantFiled: September 7, 2016Date of Patent: November 21, 2017Assignee: Kabushiki Kaisha ToshibaInventors: Katsuya Sugawara, Tomoyuki Maeda, Kenichiro Yamada
-
Patent number: 9799354Abstract: According to one embodiment, a magnetic recording head includes a magnetic pole, a stacked body, and a first nonmagnetic layer. The stacked body includes first magnetic layer, a second magnetic layer provided between the first magnetic layer and the magnetic pole, and an intermediate layer provided between the first magnetic layer and the second magnetic layer and being nonmagnetic. The first nonmagnetic layer is provided between the second magnetic layer and the magnetic pole. A product of a thickness and a saturation magnetic flux density of the second magnetic layer is larger than a product of a thickness and a saturation magnetic flux density of the first magnetic layer. The length of the first magnetic layer is shorter than a length of the second magnetic layer. A current flows from the second magnetic layer toward the first magnetic layer.Type: GrantFiled: September 12, 2016Date of Patent: October 24, 2017Assignee: Kabushiki Kaisha ToshibaInventors: Shuichi Murakami, Kenichiro Yamada, Katsuhiko Koui, Mariko Shimizu, Akihiko Takeo, Naoyuki Narita, Hitoshi Iwasaki
-
Publication number: 20170243604Abstract: According to one embodiment, a magnetic recording and reproducing device includes a magnetic recording medium, a magnetic head, and a processor. The magnetic head includes a first reproducing element portion and a second reproducing element portion. The processor is configured to acquire a first signal and a second signal, and to output an output signal according to either one of the first signal and the second signal. The first signal is obtained by reproducing information recorded on a first recording region by the first reproducing element portion. The second signal is obtained by reproducing the information recorded on the first recording region by the second reproducing element portion.Type: ApplicationFiled: September 7, 2016Publication date: August 24, 2017Inventors: Katsuya SUGAWARA, Tomoyuki Maeda, Kenichiro Yamada