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
Controlling a resource demand system
Radio communication system, transmission apparatus, reception apparatus, and radio communication method in radio communication
System for controlled release of an active principle and method for preparation
Method for transforming a single reactor line
Cardiac function management integrating cardiac contractility modulation
  Randomly Featured Patents
Dart game with blunt dart having magnet surrounded by non-magnetic sleeve and board including magnetic material
Device for eliminating inrush-current
Cracking furnace
Identification holders for dogs and cats
Method and apparatus for operating vacuum cleaner
Method for checking the transfer of data cells in an asynchronous switching arrangement, elementary switching unit and network equipped for such a method
Soft Cr-containing steel
Aster plant named `Victoria Gaby`
Photographic lens system
Retractable window crank