Resources Contact Us Home

Image Number 2 for United States Patent #7245557.

A sonar emits an ultrasonic wave into the water from a transducer on the basis of a transmission signal outputted from a transmission circuit, receives an echo reflected in the water with the transducer and converts the echo into an electric signal, and displays underwater information on a display unit on the basis of an echo signal extracted by processing the electric signal. A tailing signal removing unit for removing a tailing signal and extracting only the echo signal is provided in the sonar such that a video of a surface layer fish shoal is clearly displayed on a screen of the display unit without being hidden by a video of the tailing signal.

  Recently Added Patents
Creation and use of test cases for automated testing of media-based applications
Method and apparatus for cutting high quality internal features and contours
Method and apparatus for providing auto-completion of information
Device and method for producing a fluidic connection between cavities
High-density 3-dimensional structure
Modular connector for touch sensitive device
Antenna array system
  Randomly Featured Patents
Multiphase polymer blends
High-voltage switch having series-connected light-responsive semiconductor elements and light concentrating means for the semiconductor elements
Kickback compensation techniques
Systems and methods to send and receive encrypted DTMF digits in a data flow
Portable shelter
Method and means for using sound to indicate flow of control during computer program execution
Telephone operator console set
Container for watches, jewelry, pens, or eye-glasses
Mechanism for assembly of ultrasonic instrument
Method and template for producing a tensile test coupon