Patents by Inventor Yusuke Ohta

Yusuke Ohta 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: 20070216879
    Abstract: A projection apparatus for inexpensively adjusting the irradiating region of light on an image forming device to irradiate the light to the entire image forming surface of the image forming device is provided. The projector including a light tunnel for passing the light emitted from a lamp and changing the light to condensed uniform light, a mirror for reflecting the light passed through the light tunnel, a DMD for reflecting the light at an image forming surface irradiated with the light reflected by the mirror and forming an image, a lens for projecting the image formed with the DMD, and a frame for attaching these components of an image projection optical system; further includes a rotation adjustment fixing mechanism for fixing the light tunnel to the frame with the rotation angle having the axis of the light tunnel as substantially the center adjusted with an incident port of light of the light tunnel facing the lamp and an exit port facing the mirror.
    Type: Application
    Filed: March 12, 2007
    Publication date: September 20, 2007
    Applicant: Funai Electric Co., Ltd.
    Inventors: Tsutomu Yoshikawa, Yusuke Ohta
  • Publication number: 20070216871
    Abstract: A projector capable of preventing a light tunnel from positional deviation is obtained. This projector comprises a rectangular light tunnel having a hollow light guide path capable of passing light therethrough for shaping the light with the light guide path, an optical component holding member provided with a holding portion holding the light tunnel and a light tunnel clip including a first pressing portion and a second pressing portion pressing first and second surfaces, adjacent to each other, of the light tunnel toward the holding portion of the optical component holding member for holding the light tunnel in a pressed state, while the first pressing portion and the second pressing portion press positions of the first and second surfaces of the light tunnel located substantially on the same line perpendicular to the traveling direction of the light respectively.
    Type: Application
    Filed: March 9, 2007
    Publication date: September 20, 2007
    Applicant: Funai Electric Co., Ltd.
    Inventors: Tsutomu Yoshikawa, Yusuke Ohta
  • Publication number: 20070198462
    Abstract: A document access control system for determining whether to allow a client to access a target document file according to a security policy set in a server, the system includes a cache timing determination part for determining the timing for caching policy determination data corresponding to the target document file in the client, a policy determination data obtaining part for obtaining the policy determination data from the server according to a report from the cache timing determination part, a policy determination data storage part for storing the obtained policy determination data in correspondence with the target document file, and a file access control part for controlling access to the target document file according to the policy determination data stored in the policy determination data storage part in a case where the user of the client requests access to the target document file when the client is in an offline mode.
    Type: Application
    Filed: January 26, 2007
    Publication date: August 23, 2007
    Inventors: Yusuke Ohta, Kazuyo Hashimoto, Hiroyuki Minamide
  • Publication number: 20060031677
    Abstract: A digital signing method includes a signature object data inputting step for inputting data to be signed with digital signature, a signature key presentation requesting step for requesting presentation of attribute information of one or more signature keys, a signature key displaying step for displaying the attribute information of one or more signature keys presented in the signature key presentation requesting step to a user, signature data creation requesting step requesting creation of signature data by using: the electronic data inputted in the signature object data inputting step; and a signature key corresponding to the attribute information of signature key selected by the user from the attribute information of one or more signature keys displayed in the signature key displaying step, and a signature data saving step for saving signature data created in response to the request in the signature data creation requesting step or a signature file created based on the signature data in a storage unit.
    Type: Application
    Filed: August 2, 2005
    Publication date: February 9, 2006
    Inventor: Yusuke Ohta
  • Publication number: 20050108548
    Abstract: A product validity verifying system for verifying validity of a product including a system management unit configured to collect specific information associated with components of a verification target product. The system also includes an electronic signature generating unit configured to generate an electronic signature based on specific information provided from the system management unit, and a verification unit configured to verify the validity of the target product based on making comparisons between specific information restored from the electronic signature and specific information provided from the system management unit.
    Type: Application
    Filed: November 8, 2004
    Publication date: May 19, 2005
    Inventor: Yusuke Ohta
  • Publication number: 20050085009
    Abstract: A method of manufacturing a semiconductor device involves the steps of: forming a plurality of product formation areas each having a circuit and a plurality of first electrode pads over a main surface of a semiconductor wafer; arranging a plurality of second electrode pads with larger pitches than the first electrode pads in each of the product formation areas; segmenting the semiconductor wafer to separate the plural product formation areas and provide a plurality of semiconductor devices each having the circuit, the plural first electrode pads and the plural second electrode pads on a first surface; and cleaning foreign matter off the first surface of the semiconductor device after the step of segmenting the semiconductor devices.
    Type: Application
    Filed: September 30, 2004
    Publication date: April 21, 2005
    Inventors: Yoshihiko Yamaguchi, Atsushi Fujishima, Yusuke Ohta
  • Patent number: 6130763
    Abstract: A method and a system for correcting output color component values for a color image output used in devices such as a printer and a digital copier based upon independently selected input and output values and an interpolated curve line based upon a predetermined conditional polynomial equation.
    Type: Grant
    Filed: February 4, 1998
    Date of Patent: October 10, 2000
    Assignee: Ricoh Company, Ltd.
    Inventors: Yusuke Ohta, Noboru Murayama
  • Patent number: 5982379
    Abstract: A system for and a method visualizes a color system for specifying a portable color system representation. The portable color system representation does not require a large table or a large amount of calculation. The same system and the method allows the user to interactively edit each of color components of a given color system so as to generate a portable color system framework representation between unrelated devices whose input and output ranges are different.
    Type: Grant
    Filed: June 4, 1997
    Date of Patent: November 9, 1999
    Assignee: Ricoh Company, Ltd.
    Inventors: Koichi Suzuki, Yusuke Ohta, Noboru Murayama