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
Nonvolatile semiconductor memory device
Fungal transcriptional activators useful in methods for producing a polypeptide
Infant head cradle with controlled head movement
Transformer structure
Semiconductor light emitting device, composite light emitting device with arrangement of semiconductor light emitting devices, and planar light source using composite light emitting device
Temperature control for cooking appliance including combination heating system
Recombinant fusion proteins to growth hormone and serum albumin
  Randomly Featured Patents
Method of making ceramic tapes
Pneumatic tire
Pump with radial packing ring
Carafe with elongated handle and spout
Electrical connectors
Method and apparatus for burning gaseous fuel, wherein fuel composition varies
Electrooptic diaphragm and circuit operative for causing the diaphragm to open up stepwise and then close to terminate exposure
Acoustic transducer
Loading module for currency cartridges
Variable suction aspirator head with solids trap