Patents Represented by Attorney, Agent or Law Firm Posz & Bethard, PLC
  • Apparatus for detecting reciprocating motion of object and/or amplitude thereof
    Patent number: 6700114
    Abstract: A system working to detect a reciprocating motion of an object such as a scanner mirror of an optical scanner. The system is designed to compensate for an error which is concluded in an amplified sensor signal used to determine a reference position of the scanner mirror and which is sensitive to a change in environmental condition of use such as a change in ambient temperature. The system also works to monitor a change in amplitude of swing of the scanner mirror accurately to keep it constant.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: March 2, 2004
    Assignee: Denso Corporation
    Inventors: Tamotsu Mizuno, Takamoto Watanabe, Katsuji Kosaka, Yoshiaki Hoashi