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
Dynamic facsimile transcoding in a unified messaging platform
Developing device
Modulation of TIM receptor activity in combination with cytoreductive therapy
Buildable dinnerware
Semiconductor device, integrated circuit and method of manufacturing an integrated circuit
System and method for data reconfiguration in an optical communication network
Digital broadcast receiver and method for processing caption thereof
  Randomly Featured Patents
Method for the manufacture of a compound casting
Lamp driving apparatus, backlight assembly and liquid crystal display device using the same
Connection system for reinforced composite structures
Composition for fixing water-color ink, cover film for thermal transfer image using composition for fixing water-color ink, and thermal transfer image recorded medium
Device and method for tracking phase error in digital TV receiver
Semiconductor integrated circuit which properly executes an operational test of a circuit under test in the semiconductor integrated circuit
Sidewall support for dual containment vessels
Method of designing a multi-module single-chip circuit system
Locking load bar carrier and method
Elevator pressure traction arrangement