Patents by Inventor Eiko Kanbara

Eiko Kanbara 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).

  • Displacement detection apparatus
    Patent number: 7238931
    Abstract: The present invention provides a displacement detection apparatus uses short scales and can provide a long measurable range comparable to a single long scale with a short bed length.
    Type: Grant
    Filed: April 19, 2005
    Date of Patent: July 3, 2007
    Assignee: Sony Corporation
    Inventors: Nobuo Nabeshima, Kayoko Taniguchi, Eiko Kanbara
  • Displacement detection apparatus
    Publication number: 20050236558
    Abstract: The present invention provides a displacement detection apparatus uses short scales and can provide a long measurable range comparable to a single long scale with a short bed length.
    Type: Application
    Filed: April 19, 2005
    Publication date: October 27, 2005
    Inventors: Nobuo Nabeshima, Kayoko Taniguchi, Eiko Kanbara
  • Displacement pickup
    Patent number: 6879405
    Abstract: A displacement pickup is provided which comprising a scale (12) having defined thereon a first area (12a) where positional information is recorded with a predetermined pitch and a second area (12b) where positional information is recorded with a pitch different from that in the first area (12a), a first reader (10) which reads the positional information recorded in the first area (12a), a first phase detector (14) which detects a first phase on the basis of the positional information read by the first reader (10), a second reader (11) which reads the positional information recorded in the second area (12b), a second phase detector (15) which detects a second phase on the basis of the positional information read by the second reader (11), a phase comparator (16) which makes a comparison between the first and second phases, and an origin signal selector (18) which produce a plurality of signals according to the result of comparison and selects an arbitrary one of the plurality of signals on the basis of the pos
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: April 12, 2005
    Assignee: Sony Precision Technology, Inc.
    Inventors: Hideaki Tamiya, Kayoko Taniguchi, Eiko Kanbara
  • Displacement pickup
    Publication number: 20040095583
    Abstract: A displacement pickup is provided which comprising a scale (12) having defined thereon a first area (12a) where positional information is recorded with a predetermined pitch and a second area (12b) where positional information is recorded with a pitch different from that in the first area (12a), a first reader (10) which reads the positional information recorded in the first area (12a), a first phase detector (14) which detects a first phase on the basis of the positional information read by the first reader (10), a second reader (11) which reads the positional information recorded in the second area (12b), a second phase detector (15) which detects a second phase on the basis of the positional information read by the second reader (11), a phase comparator (16) which makes a comparison between the first and second phases, and an origin signal selector (18) which produce a plurality of signals according to the result of comparison and selects an arbitrary one of the plurality of signals on the basis of the pos
    Type: Application
    Filed: November 10, 2003
    Publication date: May 20, 2004
    Applicant: Sony Precision Technology Inc.
    Inventors: Hideaki Tamiya, Kayoko Taniguchi, Eiko Kanbara