Resources Contact Us Home
Ultrasonic distance detection for visually impaired pedestrians

Image Number 4 for United States Patent #6469956.

Ultrasound is used to determine, by echo ranging, the distance of objects in front of a user for allowing a visually impaired pedestrian to walk safely. A double circuit allows two simultaneous measurements. Distances measured are converted into human paces or steps. Then each ear of the human receives measurement information. The user can calibrate the apparatus for his or her own stride.

  Recently Added Patents
Device for producing a connection grid with an integrated fuse
Systems and methods for a signed magnitude adder in one's complement logic
Nutritional supplement method
Transcoded images for improved trick play
Antenna device
  Randomly Featured Patents
Child's car booster seat and restraint system
Medical data draft for tracking and evaluating medical treatment
Nitridation of titanium-tungsten interconnects
Constraint-based language configuration files for updating and verifying system constraints
Portable lecterns
Memorialization of human cremain in artificial reef
Method of forming a flexible graphite composite sheet
Data retention circuit
Semiconductor device and method of manufacturing the same
Method for connecting a glow plug for operation at two different voltages