Resources Contact Us Home
Obstacle detecting apparatus using ultrasonic waves

Image Number 4 for United States Patent #4103278.

The present invention relates to an obstacle detecting apparatus using ultrasonic waves, wherein an ultrasonic transmitter-receiver and an ultrasonic receiver are provided at a desired interval, and thereby the distance and the direction to the obstacle are obtained by the intersecting point between the circular locus of the first reflected wave returning after reflection at the obstacle, and the elliptical locus of the second reflected wave to the ultrasonic receiver. Under this structure, when any person or any obstacle like a building exists within the dead angle of a motor vehicle in case a driver is going to back it, the driver is informed of the distance and the direction to the obstacle by means of the obstacle detecting apparatus using ultrasonic waves.

  Recently Added Patents
Display apparatus
Managing aging of silicon in an integrated circuit device
Light-emitting device, film-forming method and manufacturing apparatus thereof, and cleaning method of the manufacturing apparatus
Powerline communication receiver
Liquid crystal display panel
Semiconductor integrated circuit
Method for determining an object class of an object, from which light is emitted and/or reflected to a vehicle
  Randomly Featured Patents
Database management system and method of using it to transmit packets
Machine for the production of puffed cereals
Method for processing receiving message of monitor terminal in communication operating system
Transmittting light with lateral variation
Source code management method for malicious code detection
Gateway, base station and method for window-based content synchronization
Relay for personal interpreter
Media manager for controlling autonomous media devices within a network environment and managing the flow and format of data between the devices
Nonvolatile memory device and method for fabricating the same