Patents by Inventor Tsuyoshi Maeda

Tsuyoshi Maeda 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: 20100296033
    Abstract: A liquid crystal display device, without light leakage in a black display mode, is provided. The liquid crystal display (LCD) device includes a LCD panel, a light source, and an optical filter between the LCD and the light source. When the LCD panel is in the black display mode without the optical filter, leakage light leaking from the LCD panel in an oblique direction shows a hue having a local minimum value in a wavelength range from 450 nm to 550 nm. Normal incident light entering into the LCD in a normal direction shows a hue same as that of light just emitted from the light source, and oblique incident light entering into the LCD panel in an oblique direction shows a hue having a local maximum value in a wavelength range from 400 nm to less than 550 nm.
    Type: Application
    Filed: April 26, 2010
    Publication date: November 25, 2010
    Inventors: Tsuyoshi MAEDA, Toyokazu Ogasawara
  • Patent number: 7834958
    Abstract: A liquid crystal device includes a pair of substrates and a liquid crystal layer between the pair of substrates. In addition, the device includes a plurality of dots capable of independently applying voltage to the liquid crystal layer, each dot having a dot area that includes a first section and a second section. A color filter is arranged in the first section of at least one of the dots. A substantially transparent area is arranged in the at least one of the dots in the second section where the color filter is not arranged.
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: November 16, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Osamu Okumura, Eiji Okamoto, Tsuyoshi Maeda, Toshiharu Matsushima
  • Patent number: 7826004
    Abstract: There is provided a liquid crystal display device that includes a liquid crystal panel in a vertically aligned liquid crystal mode, a backlight source placed at the back of the liquid crystal panel to emit white light to the liquid crystal panel, and an optical film placed between the liquid crystal panel and the backlight source and containing dichroic dye aligned in a substantially perpendicular direction.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: November 2, 2010
    Assignee: Sony Corporation
    Inventors: Tsuyoshi Maeda, Toyokazu Ogasawara
  • Publication number: 20100208911
    Abstract: In a noise reduction apparatus for controlling noise up to a predetermined upper limited frequency, a distance from a noise source to control point X is made larger than a distance obtained by subtracting a one-half wavelength from a distance, obtained by adding up a distance from the noise source to a noise detecting microphone, a distance corresponding to time as a sum of respective delay time of the noise detecting microphone, a noise controller, and a control speaker, and a distance from the control speaker to control point X, where one wavelength is a period corresponding to the upper limited frequency.
    Type: Application
    Filed: February 15, 2010
    Publication date: August 19, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Tsuyoshi Maeda, Yoshifumi Asao, Hiroyuki Kano
  • Patent number: 7769083
    Abstract: In an image processing method of sequentially loading, compressing, and transmitting images to thereby display the images, there is provided the image processing method capable of preventing the images from degradation while keeping the responsibility until the image is displayed. When a changed region is determined to be present, the image is compressed using a method with a high compression ratio, while when there is no changed region and a predetermined period of time elapses, the image is determined to be static to thereby be compressed using a method with a low compression ratio and very little distortion.
    Type: Grant
    Filed: March 10, 2004
    Date of Patent: August 3, 2010
    Assignee: Panasonic Corporation
    Inventors: Tsuyoshi Maeda, Takashi Watanabe
  • Publication number: 20100166202
    Abstract: A noise control device includes the following structural elements. A signal memory records both of a noise signal supplied from a noise microphone and an error signal supplied from an error microphone. A filter coefficient calculator calculates a fixed filter coefficient of a control filter by using data recorded in the signal memory. A filter coefficient renewing section renews, at a given timing, a filter coefficient set at a fixed filter in a control filter to a filter coefficient read out from the filter coefficient calculator.
    Type: Application
    Filed: December 18, 2009
    Publication date: July 1, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Keiji Mori, Hiroyuki Kano, Tsuyoshi Maeda, Yoshifumi Asao
  • Publication number: 20100111317
    Abstract: A noise reduction device, including a microphone for detecting noise, a noise controller for reversing the phase of noise detected by the microphone based on information outputted from the microphone, and a speaker for outputting sound based on information outputted from the noise controller, is arranged at a seat surrounded by a shell portion having a cavity, wherein a speaker is disposed in the cavity of the shell portion.
    Type: Application
    Filed: December 11, 2008
    Publication date: May 6, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Yoshifumi Asao, Hiroyuki Kano, Masaaki Higashida, Tsuyoshi Maeda, Toshihiro Ezaki
  • Publication number: 20100104110
    Abstract: It includes a microphone for detecting noise emitted from a noise source, a noise controller for generating control sound signal to reduce noise detected by the microphone based on information from the microphone, and a speaker for outputting control sound based on control sound signal from the noise controller, wherein a plurality of microphones and speakers are arranged for each seat, and a plurality of microphones are arranged in higher density for each seat in a specific direction.
    Type: Application
    Filed: December 11, 2008
    Publication date: April 29, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Yoshifumi Asao, Hiroyuki Kano, Masaaki Higashida, Tsuyoshi Maeda, Toshihiro Ezaki
  • Patent number: 7682028
    Abstract: An image transmission system enabling a user to recognize a communication status between a PC and a projector, and including a PC (300) as an image generating apparatus and a projector (400) as an image projecting apparatus. The projector (400) monitors a status of communication with the PC (300), and includes a status monitoring unit (402) generating information related to the communication status being monitored, and also a projector communication unit transmitting the generated information related to the communication status to the PC (300). The PC (300) includes a PC communication unit (301) receiving information related to the communication status from the projector (400), a beacon analyzing unit (302) analyzing the received information and a display output unit (303) displaying a result of the analysis by the beacon analyzing unit (302).
    Type: Grant
    Filed: March 8, 2005
    Date of Patent: March 23, 2010
    Assignee: Panasonic Corporation
    Inventors: Tsuyoshi Maeda, Takashi Watanabe, Yasuaki Sakanishi
  • Patent number: 7671941
    Abstract: The invention provides a liquid crystal display capable of obtaining light and high-contrast display having a wide viewing angle in a transflective liquid crystal display. A liquid crystal display of the present invention employs a vertical alignment mode using a liquid crystal layer that is vertically aligned in the initial alignment state. A transparent display area is disposed to surround the periphery of a reflective display area in one dot, and an insulating film is provided in the area that corresponds to the reflective display area in the center of the dot. The insulating film makes the thickness of the liquid crystal layer in the reflective display area to be smaller than the thickness of the liquid crystal layer in the transparent display area.
    Type: Grant
    Filed: May 17, 2006
    Date of Patent: March 2, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Kinya Ozawa, Nobutaka Urano, Tsuyoshi Maeda
  • Patent number: 7668760
    Abstract: A distribution management device, a distribution management method, a program storage medium and a distribution management system are disclosed. The client order data of the merchandise 4 of the sales channel utilized the internet 3 and the store order data of the merchandise 4 for the quantity sold of the sales channels excluding the Internet 3 are received by the sales managing server 20 via the internet 3. The stock of merchandise 4 is controlled by the settlement/delivery instructing server 21 based on the client and store order data. The actual sales condition of merchandise in each sales channel is grasped by the shipment control server 55 based on the storage data and the delivery condition data obtained from the client and store order data and the storage data and delivery condition data obtained from the settlement/delivery instructing server 21, and the supply of merchandise 4 to the manufacturing factory will be instructed based on the actual sales condition.
    Type: Grant
    Filed: March 8, 2001
    Date of Patent: February 23, 2010
    Assignee: Sony Corporation
    Inventors: Kunimasa Suzuki, Yukari Takehira, Yasuhiro Ueda, Shigeaki Arai, Michiko Sekikawa, Lisa Naomi Schlais, Takashi Yamazaki, Tsuyoshi Maeda, Noriko Ishii, Kentaro Tanigaki, Hirokazu Takahashi, Futaba Shinohara
  • Publication number: 20100014683
    Abstract: A noise reduction device including a noise detection microphone including a high-frequency noise detection microphone and a low-frequency noise detection microphone for respectively detecting a high-frequency noise and a low-frequency noise generated from a noise source; a noise control unit for generating a control sound signal for cancelling a noise detected by the noise detection microphone in a control center of control space; and a loudspeaker for outputting a control sound based on the control sound signal from the noise controlling unit. The high-frequency noise microphone is disposed in a vicinity of a head portion of a user in a state in which directivity in an opposite direction with respect to the control center is added, and the low-frequency noise detection microphone is disposed outside of a sound-insulating wall.
    Type: Application
    Filed: July 13, 2009
    Publication date: January 21, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Tsuyoshi Maeda, Masaaki Higashida, Toshihiro Ezaki, Yoshifumi Asao, Hiroyuki Kano
  • Publication number: 20090268140
    Abstract: A liquid crystal display device with a vertical alignment mode in which a high image quality and a wide viewing angle are secured includes a liquid crystal layer having an initial state of vertical alignment interposed between a pair of substrates opposite to each other. A plurality of alignment control structures including a dielectric protrusion protruded toward the liquid crystal layer from the inner surface of the substrate is provided in a dot area constituting one unit of display. When that the dielectric constant of the dielectric protrusion is ?t1, the dielectric constant of a major axis direction of liquid crystal molecules constituting the liquid crystal layer is ?//, and the dielectric constant of a minor axis direction thereof is ??, the dielectric constants satisfy the expression ??>?//?t1.
    Type: Application
    Filed: June 9, 2009
    Publication date: October 29, 2009
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Tsuyoshi MAEDA
  • Patent number: 7609352
    Abstract: The invention provides a reflection type liquid crystal device, and a projection type display and electronic equipment in which display defects caused by disclination are reduced, minimized or prevented from being produced for a highly fine liquid crystal display with a space between pixels made to be narrow to make it possible to provide a high-contrast and bright display. A liquid crystal device includes a liquid crystal layer sandwiched between a first substrate and a second substrate, and a first electrode and a second electrode formed on a face of the above-described second substrate on a side of the above-described liquid crystal layer. The above-described first electrode and the above-described second electrode are formed so that an electric field substantially parallel to the surface of the substrate with respect to the above-described liquid crystal layer can be applied thereto.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: October 27, 2009
    Assignee: Seiko Epson Corporation
    Inventors: Tsuyoshi Maeda, Kinya Ozawa, Osamu Okumura, Eiji Okamoto, Hirotaka Kawata, Toshiharu Matsushima, Takumi Seki, Kimitaka Kamijo
  • Publication number: 20090256995
    Abstract: A liquid crystal display device according to the present invention includes a liquid crystal panel which has a liquid crystal cell including a predetermined liquid crystal layer and polarizing plates for holding the liquid crystal cell, a backlight source which is arranged on the rear side of the liquid crystal panel, for irradiating the liquid crystal panel with white light, and an absorbing layer which is arranged between the backlight source and the liquid crystal cell, for absorbing only the light of the wavelength band corresponding to a changed color of the white light while passing through the liquid crystal panel in the oblique direction with respect to the normal direction of the liquid crystal panel.
    Type: Application
    Filed: April 8, 2009
    Publication date: October 15, 2009
    Inventors: Toyokazu Ogasawara, Tsuyoshi Maeda
  • Publication number: 20090256999
    Abstract: A lens array sheet includes a lens layer having a lens surface on which a plurality of lenses are formed in an array, a light reflection layer arranged at an opposite side to the lens surface of the lens layer and having an opening within a light focusing region in the lenses to transmit light, for reflecting light at a site other than the opening, and a light diffusion layer arranged between the lens layer and the light reflection layer, for diffusing light, which passes through the opening and is directed toward the lens layer.
    Type: Application
    Filed: April 7, 2009
    Publication date: October 15, 2009
    Inventors: Toyokazu OGASAWARA, Tsuyoshi Maeda
  • Publication number: 20090257000
    Abstract: A lens array sheet includes a lens layer having a lens surface on which a plurality of lenses are formed in an array, and a light diffusion layer arranged at an opposite side to the lens surface of the lens layer, for diffusing light directing toward the lens layer, wherein the light diffusion layer has a light reflection portion, which is embedded in at least a part of a non-light focusing region of the lens layer, for reflecting light passing through the non-light focusing region and directing toward the lens layer.
    Type: Application
    Filed: April 14, 2009
    Publication date: October 15, 2009
    Inventors: Toyokazu OGASAWARA, Tsuyoshi MAEDA
  • Publication number: 20090251636
    Abstract: A liquid crystal display device according to the present invention includes a liquid crystal panel, a backlight source provided on a rear surface of the liquid crystal panel, for irradiating the liquid crystal panel with white light, and an optical film provided between the liquid crystal panel and the backlight source, in which the optical film includes a base material which passes the white light irradiated from the backlight source, a colored layer partially provided on one surface of the base material at the side of the liquid crystal, panel, and a reflective layer provided on another surface of the base material at the side of the backlight source opposite to the colored layer, for reflecting the white light.
    Type: Application
    Filed: April 1, 2009
    Publication date: October 8, 2009
    Inventors: Tsuyoshi MAEDA, Toyokazu OGASAWARA
  • Publication number: 20090252951
    Abstract: A protective sheet for preventing scratches which comprises a substrate (1) having one face exhibiting the self-sticking property and a foam rubber layer (3) disposed on the other face of the substrate (1) and, in particular, the protective sheet for preventing scratches described above which further comprises a sheet layer (5) which is disposed on the foam rubber layer (3) and exhibits releasing property from the face exhibiting the self-sticking property of the substrate (1). The protective sheet is used for protecting the surface of various articles, in particular, for preventing scratches on coated portions of panels of the body in the assembly step of vehicles.
    Type: Application
    Filed: August 1, 2007
    Publication date: October 8, 2009
    Inventors: Hidenori Ozaki, Yosimi Saito, Hiroaki Ishizawa, Tsuyoshi Maeda, Yoshiaki Kato, Yu Isozaki
  • Patent number: 7589809
    Abstract: The invention provides a thin reflective plate having cholesteric liquid crystal that can prevent or reduce a decrease of reflection efficiency. A reflective plate includes a cholesteric liquid crystal layer, and the cholesteric liquid crystal layer includes a plurality of regions in which the helical axes of the cholesteric liquid crystal are aligned in different directions in the plane of a substrate, and therefore, the regions can reflect color light components having different wavelengths. Consequently, the cholesteric liquid crystal layer can reflect light formed of light components of different colors (for example, white light) as a whole. When the reflective plate is applied to a reflective liquid crystal display device or the like, it is possible to appropriately reflect white light for display.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: September 15, 2009
    Assignee: Seiko Epson Corporation
    Inventors: Tsuyoshi Maeda, Kimitaka Kamijo, Kinya Ozawa, Hitoshi Tsuchiya