Patents by Inventor Takashi Masaki
Takashi Masaki 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: 11971633Abstract: An electrode structure includes: a plurality of pixel electrodes arranged separately from each other; and a plurality of dielectric layers laminated in a first direction with respect to the plurality of pixel electrodes, in which the plurality of dielectric layers includes: a first dielectric layer that spreads over the plurality of pixel electrodes in a direction intersecting with the first direction; and a second dielectric layer that includes dielectric material having a refractive index higher than that of the first dielectric layer, sandwiches the first dielectric layer together with the plurality of pixel electrodes, and has a slit at a position overlapping space between pixel electrodes adjacent when viewed from the first direction.Type: GrantFiled: May 15, 2020Date of Patent: April 30, 2024Assignees: SONY SEMICONDUCTOR SOLUTIONS CORPORATION, SONY GROUP CORPORATIONInventors: Takashi Sakairi, Tomoaki Honda, Tsuyoshi Okazaki, Keiichi Maeda, Chiho Araki, Katsunori Dai, Shunsuke Narui, Kunihiko Hikichi, Kouta Fukumoto, Toshiaki Okada, Takuma Matsuno, Yuu Kawaguchi, Yuuji Adachi, Koichi Amari, Hideki Kawaguchi, Seiya Haraguchi, Takayoshi Masaki, Takuya Fujino, Tadayuki Dofuku, Yosuke Takita, Kazuhiro Tamura, Atsushi Tanaka
-
Publication number: 20220389163Abstract: A method for producing a polyamide of the present invention, the method including polymerizing a raw material monomer having at least one alkylene group and at least one amide bond in the presence of a basic catalyst and a polymerization initiator. The number of carbons of the alkylene group is 1 or more and 3 or less. The polymerization initiator is a linear carboxylate having a structure derived from a secondary or tertiary alcohol.Type: ApplicationFiled: October 22, 2020Publication date: December 8, 2022Applicant: Kureha CorporationInventors: Takashi MASAKI, Yoshinori SUZUKI
-
Patent number: 9637672Abstract: A polyester resin composition comprising: 100 parts by mass of a polyester resin having at least 50% by mass of a glycolic acid resin; and from 0.5 to 50 parts by mass of a carboxylic acid anhydride.Type: GrantFiled: April 26, 2013Date of Patent: May 2, 2017Assignee: KUREHA CORPORATIONInventors: Takashi Masaki, Masahiro Yamazaki, Takuma Kobayashi, Hiroyuki Sato
-
Publication number: 20150361326Abstract: A well treatment fluid material comprising 100 parts by mass of polyester resin containing 50% by mass or more of a lactic acid resin and at least one of the degradation accelerators of 0.01 to 10 parts by mass of an organophosphorus compound and 10 to 50 parts by mass of a carboxylic acid anhydride.Type: ApplicationFiled: January 14, 2014Publication date: December 17, 2015Inventors: TAKASHI MASAKI, TAKUMA KOBAYASHI, MASAHIRO YAMAZAKI, HIROYUKI SATO
-
Publication number: 20150051119Abstract: A polyester resin composition comprising: 100 parts by mass of a polyester resin having at least 50% by mass of a glycolic acid resin; and from 0.5 to 50 parts by mass of a carboxylic acid anhydride.Type: ApplicationFiled: April 26, 2013Publication date: February 19, 2015Inventors: Takashi Masaki, Masahiro Yamazaki, Takuma Kobayashi, Hiroyuki Sato
-
Patent number: 7345972Abstract: A storage apparatus rotates an optical recording medium at two or more kinds of rotational speeds. The rotational speed is decreased when a read or write margin becomes less than or equal to a first predetermined value or, when a frequency of generation of a servo abnormality of a tracking servo and/or a focus servo is greater than or equal to a first predetermined frequency. On the other hand, the rotational speed is increased when the read or write margin becomes greater than or equal to a second predetermined value or, when the frequency of generation of the servo abnormality of the tracking servo and/or the focus servo is less than or equal to a second predetermined frequency.Type: GrantFiled: July 5, 2005Date of Patent: March 18, 2008Assignee: Fujitsu LimitedInventors: Takashi Masaki, Toru Ikeda, Shigenori Yanagi
-
Patent number: 7072252Abstract: The present invention provides a low-cost optical recording device that determines an optimum quantity of light for recording and reproducing, and an optimum focus offset value. The present invention also relates to a method of determining such an optimum focus offset value. The optical recording device is equipped with a focus control system for performing a focus control operation to focus light from a light source onto a recording face of an optical recording medium.Type: GrantFiled: September 17, 2002Date of Patent: July 4, 2006Assignee: Fujitsu LimitedInventors: Takashi Masaki, Toru Ikeda
-
Patent number: 7065012Abstract: An optical storage device decreases the influence of return light to the laser light source and prevents an increase of power consumption even if high frequency superimposing is performed. The optical storage device applies drive current, to which a high frequency signal is superimposed, to the laser light source, and reads/writes data from/in the storage medium. The high frequency superimposing is set to OFF as a default to save power consumption, and high frequency superimposing is turned ON only when it is judged that servo is unstable, and high frequency superimposing is turned OFF when it is judged that servo is stable.Type: GrantFiled: February 14, 2003Date of Patent: June 20, 2006Assignee: Fujitsu LimitedInventor: Takashi Masaki
-
Patent number: 7046603Abstract: There is disclosed an information storage apparatus in which even when a remaining power of a battery or a galvanic cell is low, an information recording medium can safely be removed. An MPU, a spindle motor driver, and a spindle motor constitute a decelerator for decelerating rotation of the information recording medium, and as a deceleration mode, a first deceleration mode with a relatively large power consumption and a second deceleration mode with a relatively small power consumption are used. The MPU monitors a voltage of a power supply line via a DSP, decelerates the rotation of the information recording medium in the first deceleration mode when the voltage exceeds a predetermined level, and decelerates the rotation of the information recording medium in the second deceleration mode when the voltage indicates the predetermined level or less.Type: GrantFiled: January 22, 2001Date of Patent: May 16, 2006Assignee: Fujitsu LimitedInventors: Hideshi Mochizuki, Takashi Masaki
-
Patent number: 7031242Abstract: A storage apparatus rotates an optical recording medium at two or more kinds of rotational speeds. The rotational speed is decreased when a read or write margin becomes less than or equal to a first predetermined value or, when a frequency of generation of a servo abnormality of a tracking servo and/or a focus servo is greater than or equal to a first predetermined frequency. On the other hand, the rotational speed is increased when the read or write margin becomes greater than or equal to a second predetermined value or, when the frequency of generation of the servo abnormality of the tracking servo and/or the focus servo is less than or equal to a second predetermined frequency.Type: GrantFiled: March 14, 2001Date of Patent: April 18, 2006Assignee: Fujitsu LimitedInventors: Takashi Masaki, Toru Ikeda, Shigenori Yanagi
-
Publication number: 20060018222Abstract: There is disclosed an information storage apparatus in which even when a remaining power of a battery or a galvanic cell is little, an information recording medium can safely be taken out. An MPU 12, a spindle motor driver 38, and a spindle motor 40 constitute a decelerator for decelerating rotation of the information recording medium, and as a deceleration mode, a first deceleration mode with a relatively large power consumption and a second deceleration mode with a relatively small power consumption are disposed. The MPU 12 monitors a voltage of a power supply line 13 via a DSP 16, decelerates the rotation of the information recording medium in the first deceleration mode when the voltage exceeds a predetermined level, and decelerates the rotation of the information recording medium in the second deceleration mode when the voltage indicates the predetermined level or less.Type: ApplicationFiled: September 21, 2005Publication date: January 26, 2006Applicant: Fujitsu LimitedInventors: Hideshi Mochizuki, Takashi Masaki
-
Patent number: 6985419Abstract: A tracking control method measures an optimum offset by measuring a light beam irradiation state of a light beam while offsetting a tracking target position of the light beam on a recording medium so that an optimum light beam irradiation state is obtained at the tracking target position, and carries out a tracking control by setting the measured optimum offset.Type: GrantFiled: January 15, 2002Date of Patent: January 10, 2006Assignee: Fujitsu LimitedInventors: Toru Ikeda, Shigenori Yanagi, Takashi Masaki
-
Publication number: 20050243675Abstract: A storage apparatus rotates an optical recording medium at two or more kinds of rotational speeds. The rotational speed is decreased when a read or write margin becomes less than or equal to a first predetermined value or, when a frequency of generation of a servo abnormality of a tracking servo and/or a focus servo is greater than or equal to a first predetermined frequency. On the other hand, the rotational speed is increased when the read or write margin becomes greater than or equal to a second predetermined value or, when the frequency of generation of the servo abnormality of the tracking servo and/or the focus servo is less than or equal to a second predetermined frequency.Type: ApplicationFiled: July 5, 2005Publication date: November 3, 2005Inventors: Takashi Masaki, Toru Ikeda, Shigenori Yanagi
-
Publication number: 20040062164Abstract: An apparatus automatically controls the laser power of the light source by the feedback output of the APC detector and prevents the increase of laser power due to an abnormality of the APC detector. The automatic power control unit controls the drive amount of the light source by the detection output of the APC detector, which monitors the emission power of the light source, measures the relationship between the APC drive instruction amount and the detection output of the APC detector, and compares this inclination with the inclination at normal time. Also the automatic power control unit compares the error values before and after APC, and detects the change of the quantity of returned light during a predetermined period. As a result, data destruction due to separation, deviation, contamination or deterioration of the APC detector can be prevented effectively.Type: ApplicationFiled: September 17, 2003Publication date: April 1, 2004Applicant: FUJITSU LIMITEDInventors: Shinji Miyamoto, Yuji Karakawa, Toru Ikeda, Takashi Masaki, Masatsugu Nishida
-
Publication number: 20030231563Abstract: An optical storage device decreases the influence of return light to the laser light source and prevents an increase of power consumption even if high frequency superimposing is performed. The optical storage device applies drive current, to which a high frequency signal is superimposed, to the laser light source, and reads/writes data from/in the storage medium. The high frequency superimposing is set to OFF as a default to save power consumption, and high frequency superimposing is turned ON only when it is judged that servo is unstable, and high frequency superimposing is turned OFF when it is judged that servo is stable.Type: ApplicationFiled: February 14, 2003Publication date: December 18, 2003Applicant: FUJITSU LIMITEDInventor: Takashi Masaki
-
Patent number: 6633523Abstract: An optical memory apparatus has an offset inserting unit for inserting a predetermined offset to the focus error signal, and a focus servo pull-in determining unit for inserting, when the focus servo control unit executes focus servo pull-in, offset to the focus error signal, detecting level change of the focus error signal and determining success or failure of focus servo pull-in.Type: GrantFiled: April 4, 2000Date of Patent: October 14, 2003Assignee: Fujitsu LimitedInventors: Takashi Masaki, Toru Ikeda
-
Publication number: 20030161229Abstract: The present invention provides a low-cost optical recording device that determines an optimum quantity of light for recording and reproducing, and an optimum focus offset value. The present invention also relates to a method of determining such an optimum focus offset value. The optical recording device is equipped with a focus control system for performing a focus control operation to focus light from a light source onto a recording face of an optical recording medium.Type: ApplicationFiled: September 17, 2002Publication date: August 28, 2003Applicant: FUJITSU LIMITEDInventors: Takashi Masaki, Toru Ikeda
-
Patent number: 6526014Abstract: A division test write processing unit is provided and a test writing process for deciding an optimum light emitting power by executing a test writing on a medium is divided into a plurality of division test writing processes. When an upper command is received, in the division test write processing unit, a division control unit skips to a division executing unit locating at the head of the processes which are not yet executed among a plurality of division executing units and allows the dividing processes of the test writing to be executed for a predetermined time.Type: GrantFiled: July 2, 2001Date of Patent: February 25, 2003Assignee: Fujitsu LimitedInventors: Takashi Masaki, Shigenori Yanagi
-
Patent number: 6522606Abstract: A servo control apparatus of an optical pickup in which an offset and a gain can be adjustable for each servo control apparatus, and influences caused by changes in environmental conditions and changes with time are reduced without a decrease in operational speed, and increase in size and an increase in cost is disclosed. The servo control apparatus includes a nonvolatile memory for storing compensatory values which correspond to differences of servo characteristics of each servo apparatus and which are measured with the assistance of external measurement instruments, and a compensation portion for compensating an optical pick-up servo signal according to the compensatory values stored in the nonvolatile memory.Type: GrantFiled: April 7, 1995Date of Patent: February 18, 2003Assignee: Fujitsu LimitedInventors: Shigeyoshi Tanaka, Toru Ikeda, Shigenori Yanagi, Takashi Masaki
-
Patent number: 6515949Abstract: When a migration is predicted and judged of continuous recording and regeneration to an adjacent next optimum condition effective area in the course of data sequential processing for recording or regenerating data continuous in a certain optimum condition effective area, a setting control unit performs optimum condition setting processing (erase, recording, regeneration) of the next optimum condition effective area under the control of an optimum condition setting processing unit, to thereby previously determine the optimum emission power and the optimum magnetic field.Type: GrantFiled: December 1, 2000Date of Patent: February 4, 2003Assignee: Fujitsu LimitedInventors: Takashi Masaki, Shigenori Yanagi