Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Method of sheet alignment and method of post-processing comprising the same and method of image formation
Method for distributing advertisements to client devices using an obscured ad monitoring function
Micro vein enhancer
Semiconductor memory device
Inkjet ink
Method of forming a semiconductor package
All-angle light emitting element having high heat dissipating efficiency
  Randomly Featured Patents
Computer front bezel
Foldable panel arrangement for plating barrel
Console redirection for a computer system
Method and apparatus for providing a cryptographically secure interface between the decryption engine and the system decoder of a digital television receiver
Method of molding a shaped article on a heated and insulated molding tool
Rear support adjustment device, particularly for ski boots
Faucet
Convertible carrying handle and shoulder strap for an attache case
Ammonium polyphosphate microencapsulated with aminoplastic resins
Contact spring strip for attaching to a holding strip and contact part with a contact spring strip and a holding strip, especially a front panel of a printed circuit module