Patents by Inventor Yasuhiro Matsui
Yasuhiro Matsui 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).
-
Publication number: 20160039204Abstract: An image formation device may include a recording head which has a plurality of nozzles inlet; a flow channel member which is connected to the inlet and forms a flow channel for supplying the discharge liquid to the recording head; and a heating section which heats the flow channel member. The flow channel member may include a first flow channel section one end of which is inserted into the inlet; and a second flow channel section that is a cylindrical member inside of which the first flow channel section passes through and that externally covers a connection part between the one end of the first flow channel section and the inlet. The second flow channel section may be connected with the first flow channel section and the inlet via an elastic member, and the one end of the first flow channel section and the inlet may be connected.Type: ApplicationFiled: March 20, 2014Publication date: February 11, 2016Inventor: Yasuhiro MATSUI
-
Publication number: 20160018600Abstract: In an embodiment, a delay line interferometer (DLI) multiplexer (MUX) includes a first stage and a second stage. The first stage includes a first DLI and a second DLI. The first DLI includes a first left input, a first right input, and a first output and has a free spectral range (FSR) that is about four times a nominal channel spacing. The second DLI includes a second left input, a second right input, and a second output and has an FSR that is about four times the nominal channel spacing. The second stage is coupled to the first stage and includes a third DLI. The third DLI includes a third left input optically coupled to the first output, a third right input optically coupled to the second output, and a third output. An FSR of the third DLI is about two times the nominal channel spacing.Type: ApplicationFiled: May 11, 2015Publication date: January 21, 2016Inventors: Yasuhiro Matsui, Bernd Huebner, Charles B. Roxlo
-
Patent number: 9231367Abstract: In an embodiment, a laser chip includes a laser, an optical amplifier, a first electrode, and a second electrode. The laser includes an active region. The optical amplifier is integrated in the laser chip in front of and in optical communication with the laser. The first electrode is electrically coupled to the active region. The second electrode is electrically coupled to the optical amplifier. The first electrode and the second electrode are configured to be electrically coupled to a common direct modulation source.Type: GrantFiled: May 17, 2013Date of Patent: January 5, 2016Assignee: FINISAR CORPORATIONInventor: Yasuhiro Matsui
-
Publication number: 20150280400Abstract: In an embodiment, a laser includes a gain section. The gain section includes an active region, an upper separate confinement heterostructure (SCH), and a lower SCH. The upper SCH is above the active region and has a thickness of at least 60 nanometers (nm). The lower SCH is below the active region and has a thickness of at least 60 nm.Type: ApplicationFiled: June 11, 2015Publication date: October 1, 2015Inventor: Yasuhiro Matsui
-
Publication number: 20150215047Abstract: In some examples, a transmit assembly is described that may include a first optical transmitter, a second optical transmitter, and a polarizing beam combiner. The first optical transmitter may be configured to emit a first optical data signal centered at a first frequency. The second optical transmitter may be configured to emit a second optical data signal centered at a second frequency offset from the first frequency by a nominal offset n. The polarizing beam combiner may be configured to generate a dual carrier optical data signal by polarization interleaving the first optical data signal with the second optical data signal. An output of the polarizing beam combiner may be configured to be communicatively coupled via an optical transmission medium to a polarization-insensitive receive assembly.Type: ApplicationFiled: February 9, 2015Publication date: July 30, 2015Inventors: Ilya Lyubomirsky, Yasuhiro Matsui, Daniel Mahgerefteh
-
Patent number: 9048618Abstract: A long wavelength, short cavity laser can include: an active region or gain cavity having a length from about 10 microns to about 150 microns; a gap region adjacent to the active region and having a gap length that is less than 30 microns or less than the length of the active region; and a distributed Bragg reflector (“DBR”) region having a grating with a kappa of at least about 200 cm?1, wherein the gap region is between the active region and the DBR region, and wherein the laser lases at a long wavelength side of a Bragg peak of the laser. The laser can have a second DBR region opposite of the first DBR region.Type: GrantFiled: March 12, 2013Date of Patent: June 2, 2015Assignee: FINISAR CORPORATIONInventor: Yasuhiro Matsui
-
Patent number: 9031359Abstract: In an embodiment, a delay line interferometer (DLI) multiplexer (MUX) includes a first stage and a second stage. The first stage includes a first DLI and a second DLI. The first DLI includes a first left input, a first right input, and a first output and has a free spectral range (FSR) that is about four times a nominal channel spacing. The second DLI includes a second left input, a second right input, and a second output and has an FSR that is about four times the nominal channel spacing. The second stage is coupled to the first stage and includes a third DLI. The third DLI includes a third left input optically coupled to the first output, a third right input optically coupled to the second output, and a third output. An FSR of the third DLI is about two times the nominal channel spacing.Type: GrantFiled: May 3, 2012Date of Patent: May 12, 2015Assignee: Finisar CorporationInventors: Yasuhiro Matsui, Bernd Huebner, Charles B. Roxlo
-
Patent number: 8953947Abstract: In some examples, a transmit assembly is described that may include a first optical transmitter, a second optical transmitter, and a polarizing beam combiner. The first optical transmitter may be configured to emit a first optical data signal centered at a first frequency. The second optical transmitter may be configured to emit a second optical data signal centered at a second frequency offset from the first frequency by a nominal offset n. The polarizing beam combiner may be configured to generate a dual carrier optical data signal by polarization interleaving the first optical data signal with the second optical data signal. An output of the polarizing beam combiner may be configured to be communicatively coupled via an optical transmission medium to a polarization-insensitive receive assembly.Type: GrantFiled: April 24, 2012Date of Patent: February 10, 2015Assignee: Finisar CorporationInventors: Ilya Lyubomirsky, Yasuhiro Matsui, Daniel Mahgerefteh
-
Patent number: 8908734Abstract: In an embodiment, a distributed Bragg reflector (DBR) laser includes a gain section and a passive section. The gain section includes an active region, an upper separate confinement heterostructure (SCH), and a lower SCH. The upper SCH is above the active region and has a thickness of at least 60 nanometers (nm). The lower SCH is below the active region and has a thickness of at least 60 nm. The passive section is coupled to the gain section, the passive section having a DBR in optical communication with the active region.Type: GrantFiled: May 17, 2013Date of Patent: December 9, 2014Assignee: Finisar CorporationInventor: Yasuhiro Matsui
-
Publication number: 20140300772Abstract: An image pickup apparatus includes: a dimming device configured to adjust light quantity of incident image pickup light; an image pickup device configured to obtain an image pickup signal based on image pickup light emitted from the dimming device; and a color correction processing section configured to perform color correction on the image pickup signal that is obtained by the image pickup device, based on information relating to light quantity of the image pickup light emitted from the dimming device. The color correction processing section performs the color correction to allow a color balance value of the image pickup signal to be substantially constant independent of the light quantity of the image pickup light emitted from the dimming device.Type: ApplicationFiled: November 13, 2012Publication date: October 9, 2014Applicant: SONY CORPORATIONInventors: Keita Kaifu, Yasuhiro Matsui, Noriko Chino, Kiyotaka Nakabayashi, Tomoya Myojin, Junya Suzuki, Manli Yuan
-
Publication number: 20140269807Abstract: A long wavelength, short cavity laser can include: an active region or gain cavity having a length from about 10 microns to about 150 microns; a gap region adjacent to the active region and having a gap length that is less than 30 microns or less than the length of the active region; and a distributed Bragg reflector (“DBR”) region having a grating with a kappa of at least about 200 cm?1, wherein the gap region is between the active region and the DBR region, and wherein the laser lases at a long wavelength side of a Bragg peak of the laser. The laser can have a second DBR region opposite of the first DBR region.Type: ApplicationFiled: March 12, 2013Publication date: September 18, 2014Applicant: FINISAR CORPORATIONInventor: Yasuhiro Matsui
-
Patent number: 8777401Abstract: A recording medium transfer apparatus is provided with: an endless belt; a plurality of transfer rollers, which intermittently rotate the endless belt; a slide unit, which can freely move back and forth between the initial position and the end position of the endless belt; a driving device, which returns the slide unit to the initial position from the end position; a linear encoder, which detects a transfer amount of the slide unit; a calculation unit, which calculates a transfer amount of the recording medium on the basis of the detection results obtained from the linear encoder; and a control unit, which controls the transfer amount of the recording medium on the basis of the transfer amount.Type: GrantFiled: November 30, 2011Date of Patent: July 15, 2014Assignee: Konica Minolta, Inc.Inventor: Yasuhiro Matsui
-
Patent number: 8781336Abstract: In an embodiment, an optical communication system includes an optical transmitter and an optical discriminator. The optical transmitter is configured to emit a frequency modulated signal having a bit rate frequency and a frequency excursion between 20% and 80% of the bit rate frequency. The optical discriminator is configured to convert the frequency modulated signal to a substantially amplitude modulated signal and includes a delay line interferometer (DLI). The DLI includes an input, an output, a first optical path coupling optical signals from the input to the output and a second optical path coupling optical signals from the input to the output. The first and second optical paths have different lengths.Type: GrantFiled: February 10, 2012Date of Patent: July 15, 2014Assignee: Finisar CorporationInventors: Xueyan Zheng, Kevin J. McCallion, Daniel Mahgerefteh, Vincent Lixiang Bu, Yasuhiro Matsui
-
Patent number: 8661180Abstract: Disclosed herein is a memory controlling device including: an address converting section configured to convert a logical address included in a request issued from a plurality of clients into a physical address of a memory; a request dividing section configured to divide a converted request converted by the address converting section by a command unit for the memory on a basis of the physical address of the converted request; and an arbitrating section configured to perform arbitration on a basis of the physical address indicated in a divided request output from the request dividing section.Type: GrantFiled: April 23, 2010Date of Patent: February 25, 2014Assignee: Sony CorporationInventors: Satoshi Takagi, Yasuhiro Matsui, Masao Tanaka, Takahiro Ikarashi, Akihiko Saotome, Hiroshi Sumihiro, Yukinao Kenjo
-
Publication number: 20140049590Abstract: An inkjet recording device, using ink which changes phase between a gel or solid state and a liquid state depending on temperature includes a recording medium fixing section to which a recording medium sticks to be fixed thereon with air suction through sticking holes; a negative pressure generation section to generate a negative pressure for the air suction; and an inkjet recording head. The recording medium fixing section includes a recording medium holding layer which has the sticking holes and is maintained at a temperature for the ink to be in the gel or solid state; and a support layer which has suction holes communicating with the sticking holes and includes at least one layer to support the recording medium holding layer. The opening area of the open end of each sticking hole is smaller than that of each suction hole.Type: ApplicationFiled: April 25, 2012Publication date: February 20, 2014Applicant: KONICA MINOLTA, INC.Inventors: Tomotaka Tateishi, Yasuhiro Matsui
-
Publication number: 20130314484Abstract: A recording medium transfer apparatus is provided with: an endless belt; a plurality of transfer rollers, which intermittently rotate the endless belt; a slide unit, which can freely move back and forth between the initial position and the end position of the endless belt; a driving device, which returns the slide unit to the initial position from the end position; a linear encoder, which detects a transfer amount of the slide unit; a calculation unit, which calculates a transfer amount of the recording medium on the basis of the detection results obtained from the linear encoder; and a control unit, which controls the transfer amount of the recording medium on the basis of the transfer amount.Type: ApplicationFiled: November 30, 2011Publication date: November 28, 2013Applicant: KONICA MINOLTA , INC.Inventor: Yasuhiro Matsui
-
Publication number: 20130308178Abstract: In an embodiment, a laser chip includes a laser, an optical amplifier, a first electrode, and a second electrode. The laser includes an active region. The optical amplifier is integrated in the laser chip in front of and in optical communication with the laser. The first electrode is electrically coupled to the active region. The second electrode is electrically coupled to the optical amplifier. The first electrode and the second electrode are configured to be electrically coupled to a common direct modulation source.Type: ApplicationFiled: May 17, 2013Publication date: November 21, 2013Applicant: FINISAR CORPORATIONInventor: Yasuhiro Matsui
-
Publication number: 20130308959Abstract: In an embodiment, a distributed Bragg reflector (DBR) laser includes a gain section and a passive section. The gain section includes an active region, an upper separate confinement heterostructure (SCH), and a lower SCH. The upper SCH is above the active region and has a thickness of at least 60 nanometers (nm). The lower SCH is below the active region and has a thickness of at least 60 nm. The passive section is coupled to the gain section, the passive section having a DBR in optical communication with the active region.Type: ApplicationFiled: May 17, 2013Publication date: November 21, 2013Applicant: FINISAR CORPORATIONInventor: Yasuhiro Matsui
-
Publication number: 20130279912Abstract: In some examples, a transmit assembly is described that may include a first optical transmitter, a second optical transmitter, and a polarizing beam combiner. The first optical transmitter may be configured to emit a first optical data signal centered at a first frequency. The second optical transmitter may be configured to emit a second optical data signal centered at a second frequency offset from the first frequency by a nominal offset n. The polarizing beam combiner may be configured to generate a dual carrier optical data signal by polarization interleaving the first optical data signal with the second optical data signal. An output of the polarizing beam combiner may be configured to be communicatively coupled via an optical transmission medium to a polarization-insensitive receive assembly.Type: ApplicationFiled: April 24, 2012Publication date: October 24, 2013Applicant: FINISAR CORPORATIONInventors: Ilya Lyubomirsky, Yasuhiro Matsui, Daniel Mahgerefteh
-
Patent number: 8439624Abstract: A transfer apparatus which performs long-distance transfer at a high speed, while preventing dimensions of the apparatus from increasing. Specifically, a transfer apparatus transfers a work to a pressing machine The transfer apparatus is provided with a base section, a follower arm, which is connected to the base section on the base-section end side such that the follower arm can rotate and vertically slide, and a first driving arm which is rotatably connected to the base section on the base-section end side. The transfer apparatus also includes a driving arm, which is rotatably connected to the first driving arm on the base-section end side and rotatably connected to the follower arm on the leading end side, and a holding apparatus arranged on the leading end side of the follower arm for holding the work.Type: GrantFiled: March 2, 2009Date of Patent: May 14, 2013Assignee: Honda Motor Co., Ltd.Inventors: Yoshihiro Kageyama, Hiroyuki Nobuta, Yasuhiro Matsui, Tatsuya Sato