Patents Assigned to Hitachi Maxell, Ltd.
  • Publication number: 20170221513
    Abstract: A magnetic recording medium of the present invention includes a non-magnetic substrate, and a magnetic layer containing a magnetic powder. The magnetic powder is constituted by an ?-iron oxide powder. The magnetic layer has a squareness in a thickness direction of 0.65 or more. In a differential curve obtained by differentiating a hysteresis curve in the thickness direction of the magnetic layer, two or more peaks are present. In a case where, out of peaks in the same direction among the above-described peaks, a local maximum of a largest peak in a magnetic field range of +500 oersted [Oe] or more is taken as P1 and a local maximum of a largest peak in a magnetic field range of ?500 oersted [Oe] or more and less than +500 oersted [Oe] is taken as P2, a relationship below is satisfied: 0.25?P2/P1?0.60.
    Type: Application
    Filed: January 31, 2017
    Publication date: August 3, 2017
    Applicant: HITACHI MAXELL, LTD.
    Inventors: Toshio HIROI, Shinji KAWAKAMI, Kenji TANAKA
  • Publication number: 20170219179
    Abstract: Provided is a vehicular lighting apparatus which is relatively small, can be manufactured at low cost, is superior in mountability to an automobile, and is superior in recognizeability of an object illuminated by a head lamp. The vehicular lighting apparatus attachable to a front end part of a vehicle includes: a composite lens element that is a light guide element constructed by molding a translucent resin substantially into a plate-like shape; a planar light-emitting unit that emits illumination light; an optical system that transforms planar light from the light-emitting unit into linear light and that causes the linear transformed light to be incident on a rear side face of the light guide element; and a diffraction lens formed on the rear side face of the light guide element on which the linear transformed light is incident, and condensing the linear transformed light.
    Type: Application
    Filed: September 30, 2014
    Publication date: August 3, 2017
    Applicant: HITACHI MAXELL, LTD.
    Inventors: Koji HIRATA, Masahiko YATSU, Hiroyuki KAJIKAWA, Hiroyuki NAKAMURA
  • Patent number: 9720213
    Abstract: An infrared lens unit includes, in order from the object side, an aperture, a lens group, and a band-pass filter which passes a light beam of a prescribed wavelength band of the infrared region. The lens group further includes, in order from the object side, a first meniscus lens which has a positive power and is convex on the object side, a second meniscus lens which has a positive power and is convex on the image side, and a convex lens which has a positive power and is convex on the object side. The lens group further includes a near-telecentric state on the image side, wherein the angle of entry of the light beam into the band-pass filter is either 0° or close to 0°. Thus, it is possible to accurately pass a light beam of a prescribed wavelength band of the infrared region by the lens unit.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: August 1, 2017
    Assignee: HITACHI MAXELL, LTD.
    Inventors: Takashi Kamitakahara, Yoshiaki Minagawa, Takashi Sugiyama
  • Patent number: 9721462
    Abstract: A terminal device and a remote control method having high usability are provided. In a terminal device having a function for remote control of electric equipments, the current position and the current height of the terminal device are detected. In addition, an azimuth and an inclination toward which the terminal device is placed are detected. Furthermore, position information and height information of electric equipments to be controlled are stored, an electric equipment having the azimuth and the inclination toward which the terminal device is placed within predetermined ranges is selected by referring to information of the position, the height, the azimuth, and the inclination of the terminal device and information of the position and the height of the electric equipments, and the selected electric equipment is remotely controlled.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: August 1, 2017
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Masayuki Hirabayashi, Hideo Nishijima, Yasunobu Hashimoto
  • Patent number: 9723268
    Abstract: A videophone system includes a processor which selectively sets a television (TV) broadcast program viewing function mode and videophone function mode in response to manual operation of a remote control, a decoder which performs, in the TV program view mode, a TV program-use decode function for decoding a broadcast program signal received from a TV tuner to thereby display it on a display screen while producing audio sounds by loudspeakers and which performs, in the videophone function mode a videophone-use decode function for decoding a videophone signal received from a distant party to thereby display on the screen an image of the distant party using the screen and speakers, and an encoder which performs a videophone-use encode function for encoding a video signal from a camera and a voice signal from a microphone to generate a videophone signal, which is sent to the distant party via a network.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: August 1, 2017
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Kazunori Iwabuchi, Hiroki Mizosoe, Mutsumi Shimoda, Setiawan Bondan, Manabu Sasamoto
  • Patent number: 9718217
    Abstract: A kneading apparatus for a thermoplastic resin, includes: a plasticizing cylinder which has a high pressure kneading zone and a pressure reduction zone; a screw in the plasticizing cylinder; a downstream side seal mechanism which shuts off communication between the high pressure kneading zone and the pressure reduction zone; and a pressure reduction zone pressure adjusting mechanism which is connected to the pressure reduction zone and which controls a pressure of the pressure reduction zone so that the pressure is not less than an atmospheric pressure and the pressure is not more than a maximum pressure of the high pressure kneading zone that is achieved when kneading a molten resin with a pressurized fluid, when the downstream side seal mechanism shuts off the communication between the high pressure kneading zone and the pressure reduction zone.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: August 1, 2017
    Assignee: HITACHI MAXELL, LTD.
    Inventors: Atsushi Yusa, Satoshi Yamamoto, Tetsuya Ano, Hironori Ota
  • Publication number: 20170214862
    Abstract: A projection video display device 1 includes a signal input unit 120 that receives a plurality of video signals, a projection unit 115 that projects a video to be displayed on a projection plane, an imaging unit 100 that images one or more operators who operate the projection plane, operation detection units 104 to 109 that detect an operation of the operator from the captured image of the imaging unit, and a control unit 110 that controls display of the video to be projected through the projection unit. The control unit selects the video signal to be projected and displayed through the projection unit among the video signals input to the signal input unit based on a detection result of the operation detection unit.
    Type: Application
    Filed: August 7, 2014
    Publication date: July 27, 2017
    Applicant: HITACHI MAXELL, LTD.
    Inventors: Takashi MATSUBARA, Sakiko NARIKAWA, Naoki MORI, Minoru HASEGAWA
  • Publication number: 20170212335
    Abstract: An imaging lens is provided with: a first lens with negative power; a second lens with negative power; a third lens with positive power; and a fourth lens with positive power. The cemented fourth lens is formed from an object side lens with negative power and an image side lens with positive power. The thickness of a resin adhesive layer that bonds the object side lens and the image side lens is 20 ?m or greater on the optical axis, and when Sg1H is the amount of sag in the image side lens surface of the object side lens and Sg2H is the amount of sag in the object side lens surface of the image side lens. The bonding operation is easy without damage occurring to the cemented surfaces, with a design that takes into account thickness of the resin adhesive layer; therefore various forms of aberration can be corrected.
    Type: Application
    Filed: March 15, 2017
    Publication date: July 27, 2017
    Applicant: HITACHI MAXELL, LTD.
    Inventors: Masaki YAMAZAKI, Takashi SUGIYAMA
  • Patent number: 9715167
    Abstract: According to the present invention, a projection type image display apparatus enables control of a large amount of light masking through a light-masking unit while maintaining a uniform illumination distribution in an area to be illuminated by the illumination light. The apparatus uses two array lenses on which lens cells are arranged in matrix form, where light-masking unit masks the array lens installed on the light source side in their particular area. The light-masking unit adjusts the amount of light emitted from the light source. The light-masking area of lens cells adjacent to lens cells closest to an optical axis is made smaller than the light-masking area of other cells.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: July 25, 2017
    Assignee: HITACHI MAXELL, LTD.
    Inventors: Takuya Shimizu, Kentaro Kato
  • Publication number: 20170199308
    Abstract: A free-form surface lens is made of a transparent resin forming an oblique projection optical system including a free-form surface mirror in a projection type video display apparatus, this lens includes a lens effective region having a surface on which a predetermined free-form surface is formed, and an edge surface formed to surround the lens effective region, the lens effective region and the edge surface in a part of a circumference surrounding the lens effective region where the edge surface is not formed are joined to each other by at least either one of a curved surface and a flat surface set so as not to change a direction of a tilt of the lens effective region in vicinity of the lens effective region, and an end surface including at least either one of the curved surface and the flat surface is set as a tapered surface.
    Type: Application
    Filed: May 29, 2014
    Publication date: July 13, 2017
    Applicant: HITACHI MAXELL, LTD.
    Inventors: Koji HIRATA, Masahiko YATSU, Yuki MATSUMIYA, Shuji KATO, Kayono KIMURA
  • Patent number: 9704389
    Abstract: An objective of the present invention is to provide an easy to use terminal device and remote control method. Provided is a terminal device having electric equipment remote control function, comprising a location information detection means for acquiring the present location of the terminal device, a near field communication means, and an information storage means. Upon acquiring identification information of electric equipment by the near field communication means, the location information is detected by the location information detection means, linked with the identification information of the electric equipment, and stored in the storage means. To carry out the remote control of the electric equipment, the location information is detected by the location information detection means, the distance between the location information and the location information stored in the storage means is computed, and the control is switched according to the distance.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: July 11, 2017
    Assignee: HITACHI MAXELL, LTD.
    Inventor: Masayuki Hirabayashi
  • Patent number: 9706202
    Abstract: The present invention provides an image encoding/decoding technique that is capable of achieving the higher compression efficiency. An image encoding method comprises: an intra prediction step which performs intra prediction on a block basis to generate a predicted image; a subtraction step which calculates the difference in prediction between the predicted image generated by the intra prediction step and an original image; a frequency conversion step which performs frequency conversion processing for the difference in prediction; a quantization step which subjects the output of the frequency conversion step to quantization processing; and a variable-length encoding step which subjects the output of the quantization step to variable-length encoding processing; wherein the intra prediction encoding step predicts a target pixel to be encoded by use of pixel values of two reference pixels between which the target pixel to be encoded is located.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: July 11, 2017
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Masashi Takahashi, Tomokazu Murakami
  • Patent number: 9699458
    Abstract: The present invention provides an image encoding/decoding technique that is capable of achieving the higher compression efficiency. An image encoding method comprises: an intra prediction step which performs intra prediction on a block basis to generate a predicted image; a subtraction step which calculates the difference in prediction between the predicted image generated by the intra prediction step and an original image; a frequency conversion step which performs frequency conversion processing for the difference in prediction; a quantization step which subjects the output of the frequency conversion step to quantization processing; and a variable-length encoding step which subjects the output of the quantization step to variable-length encoding processing; wherein the intra prediction encoding step predicts a target pixel to be encoded by use of pixel values of two reference pixels between which the target pixel to be encoded is located.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: July 4, 2017
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Masashi Takahashi, Tomokazu Murakami
  • Patent number: 9696425
    Abstract: An optical distance measuring apparatus including a light source, a variable mirror scanning the light on an object, a receiving device receiving light from the object, a detected signal amplifying unit detecting a light receiving signal obtained by the receiving device, an amplification control unit detecting a set target value of light sensitivity of the receiving device or sets the light sensitivity based on a light quantity of reflected light, and a distance calculation unit detecting a flight time of the ranging light from a light emitting signal and calculating a distance up to the object, wherein in a first scan period, the amplification control unit detects the set target value based on a light quantity of the reflected light, and in a second scan period, the amplification control unit sets sensitivity of the receiving device to the set target value and the distance calculation unit calculates the distance.
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: July 4, 2017
    Assignee: HITACHI MAXELL, LTD.
    Inventors: Shoji Yamamoto, Yoshiho Seo
  • Patent number: 9699459
    Abstract: The present invention provides an image encoding/decoding technique that is capable of achieving the higher compression efficiency. An image encoding method comprises: an intra prediction step which performs intra prediction on a block basis to generate a predicted image; a subtraction step which calculates the difference in prediction between the predicted image generated by the intra prediction step and an original image; a frequency conversion step which performs frequency conversion processing for the difference in prediction; a quantization step which subjects the output of the frequency conversion step to quantization processing; and a variable-length encoding step which subjects the output of the quantization step to variable-length encoding processing; wherein the intra prediction encoding step predicts a target pixel to be encoded by use of pixel values of two reference pixels between which the target pixel to be encoded is located.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: July 4, 2017
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Masashi Takahashi, Tomokazu Murakami
  • Patent number: 9686578
    Abstract: The present invention is intended to permit both real-time display of a picture represented by a non-compressed video signal on a television and display of a picture represented by a compressed video signal at any desired time by simultaneously transmitting the compressed video signal and non-compressed video signal via one interface. An STB packetizes a compressed video signal, and multiplexes the compressed video signal and a blanking signal combined with a non-compressed video signal. Thus, both the video signals are transmitted simultaneously. A picture represented by the non-compressed video signal is displayed on a television in real time. The compressed video signal is stored in a storage medium incorporated in the television, read at any user's desired time, and decoded so that a picture represented by the compressed video signal can be viewed at the user's desired time.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: June 20, 2017
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Nobuaki Kabuto, Akira Shibata, Yoshiaki Mizuhashi
  • Patent number: 9678256
    Abstract: A transparent heat-shielding member according to the present invention includes a transparent base substrate, an infrared reflective layer and a transparent screen function layer. The infrared reflective layer includes at least one selected from a metal oxide layer and a metal nitride layer, and a metal layer. The transparent screen function layer is formed of a light diffusing layer. The light diffusing layer contains light diffusing particles and a transparent resin. The light diffusing particles are dispersed in the transparent resin. The transparent heat-shielding member has a visible light reflectance measured in accordance with JIS R3106-1998 of 12% or more and 30% or less, a haze value measured in accordance with JIS K7136-2000 of 5% or more and 35% or less, and a shading coefficient measured in accordance with JIS A5759-2008 of 0.69 or less.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: June 13, 2017
    Assignee: HITACHI MAXELL, LTD.
    Inventors: Teruhisa Miyata, Yoshimasa Mitsumoto
  • Patent number: 9678415
    Abstract: In order to cool the discharge lamp, cooling air generated by first and second cooling fans conveyed via first and second ducts into first and second lamp-cooling air inlets of the discharge lamp, and is blown into the discharge lamp. The first and second lamp-cooling air inlets are disposed so as to be symmetrical with respect to the optical axis of the discharge lamp, and are divided into a plurality of air inlets each having different opening surface areas. Having passes through the plurality of air inlets and diverging into a plurality of air currents, the cooling air is respectively blown to different parts of the discharge lamp. The rotational frequency of the first and second cooling fans is optimally controlled in accordance with the installation position (S) of the projector device.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: June 13, 2017
    Assignee: Hitachi Maxell, Ltd.
    Inventor: Hideharu Saito
  • Patent number: D789437
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: June 13, 2017
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Shigetaka Kimura, Shinji Shibuya, Kazumasa Ueoka, Yusuke Nakajima
  • Patent number: D790621
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: June 27, 2017
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Eiki Ishijima, Hiroshi Oshima, Shinro Inui