Patents Assigned to Transient Dynamics
  • High-speed logarithmic photo-detector
    Patent number: 6002122
    Abstract: According to the present invention, a photomultiplier tube is used with a high-speed feedback mechanism to continuously modulate the gain of the tube in response to the size of the input signal. The gain of the tube and the anode current are independently converted to ideal logarithms. These signals are then subtracted from one another to reconstruct a true logarithmic representation of the optical signal. This log-light-level signal has a higher dynamic range and faster temporal response than has previously been achieved by other methods.
    Type: Grant
    Filed: January 23, 1998
    Date of Patent: December 14, 1999
    Assignee: Transient Dynamics
    Inventor: Ralph C. Wolf