Patents by Inventor Masahiro Nakata
Masahiro Nakata 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: 7559998Abstract: A hot press-formed member having stable strength and toughness is manufactured from a high strength steel sheet by hot press forming. In the cooling stage during hot press forming, the cooling rate is at least the critical cooling rate until the Ms point is reached and it is then in the range of 25-150° C./s in the temperature range from the Ms point to 200° C. The Vickers hardness of the hot pressed member is less than the value of (maximum quenching hardness—10) and at least the value of (maximum quenching hardness—100).Type: GrantFiled: November 28, 2005Date of Patent: July 14, 2009Assignees: Sumitomo Metal Industries, Ltd., Toyota Jidosha Kabushiki Kaisha, Toyoda Iron Works Co., Ltd.Inventors: Toshinobu Nishibata, Masahiro Nakata, Shuntaro Sudo, Akira Obayashi, Masanobu Ichikawa
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Patent number: 7512332Abstract: A camera has a viewfinder that forms a subject image to be observed, a multipoint auto-focus adjuster that focuses the subject image on the basis of multiple focus points defined on the subject image, a superimposer that superimposes an indicator mark on a position of a given focus point, and a focus point luminance detector that detects a luminance of the position. Then, the superimposer superimposes the indicator mark such that a brightness of the indicator mark increases as the luminance of the position increases.Type: GrantFiled: June 16, 2005Date of Patent: March 31, 2009Assignee: Hoya CorporationInventors: Shigeru Iwamoto, Tadahisa Ohkura, Masahiro Nakata
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Patent number: 7496290Abstract: A multipoint autofocus system in which a pair of object images, obtained by pupil-division of an object light bundle in each detection area, are projected onto different zones of a sensor and are converted into image signals, so that a defocus amount can be determined based on the image signals, the multipoint autofocus system including intersecting detection areas whose detection areas partly overlap and a plurality of sensor arrays of the sensor corresponding to respective the intersecting detection areas; and a selection device for selecting a defocus amount whose absolute value is smallest out of defocus amounts obtained by each sensor array of the intersecting detection areas.Type: GrantFiled: November 2, 2005Date of Patent: February 24, 2009Assignee: Hoya CorporationInventor: Masahiro Nakata
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Patent number: 7493034Abstract: A focus detection system includes a line sensor array wherein the line sensor array photoelectrically converts object light into an electric charge, and outputs the accumulated electric charge as an image signal; a monitor sensor array for monitoring an integral value of the line sensor array to output a monitor signal; a controller; and an amplifier. The controller detects the integral value of the line sensor array from the monitor signal, continues to make the line sensor array perform an integral operation until a secondary maximum integral time elapses if, upon a lapse of a predetermined primary maximum integral time, a value of the monitor signal needs to be amplified at an amplification factor greater than a maximum amplification factor of the amplifier, and increases the amplification factor of the amplifier after a lapse of the secondary maximum integral time.Type: GrantFiled: November 8, 2005Date of Patent: February 17, 2009Assignee: Hoya CorporationInventor: Masahiro Nakata
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Patent number: 7460779Abstract: A focus detection system includes a line sensor array having areas including pixels, wherein the line sensor array photoelectrically converts object light received by each pixel into electric charges, and outputs accumulated electric charges as an image signal; monitor sensor arrays, adjacent to the areas of the line sensor array, for monitoring amounts of light received thereby to output monitor signals, respectively; a controller which terminates an integral operation of the line sensor array immediately after the monitor signals reach an integration termination value; and a saturation detecting device for detecting whether the image signal reaches a predetermined level of saturation. If the saturation detecting device detects that the image signal reaches the predetermined level of saturation, the controller changes the integration termination value so that the monitor signals reach the integration termination value quicker, and makes the line sensor array perform the integral operation again.Type: GrantFiled: November 8, 2005Date of Patent: December 2, 2008Assignee: Hoya CorporationInventor: Masahiro Nakata
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Patent number: 7454135Abstract: A camera system incorporating a seamless lens-drive switching mechanism includes a lens drive ring, a manual operation ring, a motor, a first one-way rotational transfer mechanism preventing the manual operation ring and the lens drive ring from being connected with each other in a first neutral state, and maintains the first neutral state even if the lens drive ring is rotated by the motor; a second one-way rotational transfer mechanism which prevents the motor and the lens drive ring connecting with each other in a second neutral state, connects the motor with the lens drive ring when the motor rotates from the second neutral state, and maintains the second neutral state even if the lens drive ring is rotated by the manual operation ring; and a controller which stops and reverses the motor to bring the second one-way rotational transfer mechanism into the second neutral state.Type: GrantFiled: November 17, 2005Date of Patent: November 18, 2008Assignee: Hoya CorporationInventors: Masahiro Nakata, Makoto Iikawa
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Patent number: 7315009Abstract: A material for welding 5 having a region 11 in which welding such as laser welding or arc welding is performed, the region including indentations 5a-1 which are produced by carrying out a first working step comprising embossing, V-bending, U-bending, L-bending, drawing, stepped drawing, or a combination of these to form a curved portion 5a in the material being worked, and a second working step which is press working which crushes the curved portion 5a which is formed by the first working step. The indentations 5a-1 have a protruded portion 11a which projects from a flat surface which forms the surface of the material being worked 5, and a recessed portion 11b which is formed on the inside of the protruded portion 11. Indentations 5a-1 are provided in the form of at least two separated dots so as to be generally parallel to the predicted welding position and are arranged on the expected welding position.Type: GrantFiled: January 13, 2006Date of Patent: January 1, 2008Assignee: Sumitomo Metal Industries, Ltd.Inventors: Hiroki Fujimoto, Masahiro Nakata
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Publication number: 20070172226Abstract: A digital single-lens reflex camera with preview functionality is provided that includes an imaging device, a monitor, and a preview image display processor. The imaging device captures an image through a photographing lens. The monitor displays the image captured by the imaging device. The preview image display processor displays the preview image captured by the imaging device on a monitor.Type: ApplicationFiled: January 24, 2007Publication date: July 26, 2007Applicant: PENTAX CorporationInventors: Masahiro Nakata, Tomohiko Kanzaki
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Publication number: 20070081864Abstract: A sleeve 10 for introduction of a pressurized fluid, which is attached to a rockbolt main body 1, comprises a cylindrical projecting part 11 of a large diameter and a bearing-plate-holding part 12 of a diameter smaller than an aperture of a bearing plate 6. The projecting part 11 and the bearing-plate-holding part 12 preferably has the same inner diameter. When the rockbolt main body 1 is embedded in a bedrock or ground, the bearing plate 6 locates on an edge of a rockbolt-setting hole of the bedrock or ground, and the bearing-plate-holding part 12 extends through the bearing plate 6 into the rockbolt-setting hole. Since the projecting part 11 and the bearing plate 6 are disposed on a sprayed concrete layer, a projection height of the rockbolt is remarkably decreased. Consequently, lining concrete 8 is applied onto the sprayed concrete layer with ease, and the bedrock or ground is reinforced with high reliability.Type: ApplicationFiled: July 29, 2004Publication date: April 12, 2007Applicant: Nisshin Steel Co.,LTDInventors: Tatsurou Iwasaki, Masahiro Nakata, Hiromichi Shiroma, Tetsuo Itou, Kenji Ooshima, Hiroyuki Tanase, Takefumi Nakako, Takeyuki Yoshida, Toshiharu Kittaka
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Publication number: 20070025221Abstract: When a hybrid optical disc is loaded on a player, the next generation DVD layer is reproduced in preference to the DVD layer. Jump to the DVD layer is appropriately performed based on the content of the reproduction list held in the next generation DVD. The jump to the DVD layer is performed based on the command information (jump command) held in the reproduction list of the next generation DVD layer. When reproduction of the title specified by the command information is finished after the jump to the DVD layer, the process returns to the HDDVD layer, and reproduction is performed from the position following the reproducing position at the time of the jump. Thus, the content of the HDDVD layer and the content of the DVD layer are reproduced as one stream.Type: ApplicationFiled: June 28, 2006Publication date: February 1, 2007Inventors: Morio Nakatani, Keiji Horiuchi, Masahiro Nakata
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Publication number: 20070002713Abstract: When a disc loaded on a player is a hybrid next generation DVD, determination is made on whether the connected TV device is adaptable for the HD mode. Such determination is performed by whether or not the copyright protecting function of the connected TV device satisfies a condition set in advance. When adaptable for the HD mode, reproduction prioritizing the HDDVD layer is performed. When not adaptable for the HD mode, reproduction prioritizing the DVD layer is performed. Thus, the video content of HD mode recorded on the HDDVD layer is protected against leakage to the outside via the connected TV device by reproducing the DVD layer in preference in the case the copyright protecting function of the TV device is not sufficient.Type: ApplicationFiled: June 27, 2006Publication date: January 4, 2007Inventors: Morio Nakatani, Masahiro Nakata, Noboru Mamiya
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Publication number: 20060291359Abstract: When it is determined that the disc loaded on a player is a hybrid next generation DVD, the DVD layer is reproduced with a red laser light. In parallel with this reproduction process, a process for notifying the presence of the HDDVD layer is performed. That is, determination is made on whether the notification timing defined in advance has been reached. If the notification timing has been reached, a control instruction is output from a controller to an AV processing circuit, and the image information including the image notifying the presence of the HDDVD layer is output from the AV processing circuit. Thus, the user may learn that the HDDVD layer can be reproduced.Type: ApplicationFiled: June 27, 2006Publication date: December 28, 2006Inventors: Morio Nakatani, Masahiro Nakata
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Patent number: 7150391Abstract: A material for welding 5 having a region 11 in which welding such as laser welding or arc welding is performed, the region including indentations 5a-1 which are produced by carrying out a first working step comprising embossing, V-bending, U-bending, L-bending, drawing, stepped drawing, or a combination of these to form a curved portion 5a in the material being worked, and a second working step which is press working which crushes the curved portion 5a which is formed by the first working step. The indentations 5a-1 have a protruded portion 11a which projects from a flat surface which forms the surface of the material being worked 5, and a recessed portion 11b which is formed on the inside of the protruded portion 11. Indentations 5a-1 are provided in the form of at least two separated dots so as to be generally parallel to the predicted welding position and are arranged on the expected welding position.Type: GrantFiled: December 23, 2004Date of Patent: December 19, 2006Assignee: Sumitomo Metal Industries, Ltd.Inventors: Hiroki Fujimoto, Masahiro Nakata
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Publication number: 20060185774Abstract: A hot press-formed member having stable strength and toughness is manufactured from a high strength steel sheet by hot press forming. In the cooling stage during hot press forming, the cooling rate is at least the critical cooling rate until the Ms point is reached and it is then in the range of 25-150° C./s in the temperature range from the Ms point to 200° C. The Vickers hardness of the hot pressed member is less than the value of (maximum quenching hardness ?10) and at east the value of (maximum quenching hardness ?100).Type: ApplicationFiled: November 28, 2005Publication date: August 24, 2006Inventors: Toshinobu Nishibata, Masahiro Nakata, Shuntaro Suda, Akira Obayashi, Masanobu Ichikawa
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Publication number: 20060175310Abstract: A material for welding 5 having a region 11 in which welding such as laser welding or arc welding is performed, the region including indentations 5a-1 which are produced by carrying out a first working step comprising embossing, V-bending, U-bending, L-bending, drawing, stepped drawing, or a combination of these to form a curved portion 5a in the material being worked, and a second working step which is press working which crushes the curved portion 5a which is formed by the first working step. The indentations 5a-1 have a protruded portion 11a which projects from a flat surface which forms the surface of the material being worked 5, and a recessed portion 11b which is formed on the inside of the protruded portion 11. Indentations 5a-1 are provided in the form of at least two separated dots so as to be generally parallel to the predicted welding position and are arranged on the expected welding position.Type: ApplicationFiled: January 13, 2006Publication date: August 10, 2006Inventors: Hiroki Fujimoto, Masahiro Nakata
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Publication number: 20060120711Abstract: A multipoint autofocus system in which a pair of object images, obtained by pupil-division of an object light bundle in each detection area, are projected onto different zones of a sensor and are converted into image signals, so that a defocus amount can be determined based on the image signals, the multipoint autofocus system including intersecting detection areas whose detection areas partly overlap and a plurality of sensor arrays of the sensor corresponding to respective the intersecting detection areas; and a selection device for selecting a defocus amount whose absolute value is smallest out of defocus amounts obtained by each sensor array of the intersecting detection areas.Type: ApplicationFiled: November 2, 2005Publication date: June 8, 2006Applicant: PENTAX CorporationInventor: Masahiro Nakata
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Publication number: 20060115612Abstract: The present invention discloses an ink-jet recording sheet which, on at least one surface of a support, has a porous ink absorbing layer containing fine particle silica having the average particle size of 0.5 ?m or smaller produced by wet process, electrolytes such as alkaline metal salts and alkaline earth metal salts, and polyvinyl alcohol; and then has a gloss layer. The ink-jet recording sheet has excellent features, that is, it has gloss like that of photographic printing paper, the excellent ink absorption speed and ink absorption capacity, and does not produce defects of the coating due to the cracks generated during drying in production processes of the ink absorbing layer. Therefore, the ink-jet recording sheet is suitable as a recording sheet for an ink-jet printer.Type: ApplicationFiled: December 1, 2005Publication date: June 1, 2006Applicant: OJI PAPER CO., LTD.Inventors: Masahiro Nakata, Akane Okawa, Kozo Tajiri
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Patent number: 7049571Abstract: A focus detection device includes a plurality of line sensors, each having a plurality of pixels, the line sensor photoelectrically converting and integrating light from a photographic object received by each of the pixels so as to output the received light as an image signal; a plurality of monitor sensors provided adjacent to respective the line sensors, each of the monitor sensors monitoring an integrated value of the respective line sensors; an output terminal for externally outputting a monitor signal which is output from each of the monitor sensors and the image signal which is output from each of the line sensors; and an output selection device for selectively outputting any one of the monitor signal and the image signal from a common the output terminal.Type: GrantFiled: February 17, 2004Date of Patent: May 23, 2006Assignee: PENTAX CorporationInventors: Masahiro Nakata, Satoru Horita
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Publication number: 20060104624Abstract: A camera system incorporating a seamless lens-drive switching mechanism includes a lens drive ring, a manual operation ring, a motor, a first one-way rotational transfer mechanism preventing the manual operation ring and the lens drive ring from being connected with each other in a first neutral state, and maintains the first neutral state even if the lens drive ring is rotated by the motor; a second one-way rotational transfer mechanism which prevents the motor and the lens drive ring connecting with each other in a second neutral state, connects the motor with the lens drive ring when the motor rotates from the second neutral state, and maintains the second neutral state even if the lens drive ring is rotated by the manual operation ring; and a controller which stops and reverses the motor to bring the second one-way rotational transfer mechanism into the second neutral state.Type: ApplicationFiled: November 17, 2005Publication date: May 18, 2006Applicant: PENTAX CorporationInventors: Masahiro Nakata, Makoto Iikawa
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Publication number: 20060104621Abstract: A focus detection system includes a line sensor array wherein the line sensor array photoelectrically converts object light into an electric charge, and outputs the accumulated electric charge as an image signal; a monitor sensor array for monitoring an integral value of the line sensor array to output a monitor signal; a controller; and an amplifier. The controller detects the integral value of the line sensor array from the monitor signal, continues to make the line sensor array perform an integral operation until a secondary maximum integral time elapses if, upon a lapse of a predetermined primary maximum integral time, a value of the monitor signal needs to be amplified at an amplification factor greater than a maximum amplification factor of the amplifier, and increases the amplification factor of the amplifier after a lapse of the secondary maximum integral time.Type: ApplicationFiled: November 8, 2005Publication date: May 18, 2006Applicant: PENTAX CorporationInventor: Masahiro Nakata