Resources Contact Us Home
Wireless prepaid telephone system with extended capability

Image Number 8 for United States Patent #6754481.

A telecommunication system incorporates individual station instruments simplified by wireless operation, voice dialing, prepaid accounting and out-call operation, all enabled by cooperative system operation including supporting central equipment. Wireless operation of the central equipment involves a multiple port wireless platform along with other units for interfacing a multitude of mobile station instruments simultaneously for interactive audio communication to, regulate control, monitor and record operations of the instruments, and bridge communication with selected remote terminals through the public switched telephone network. Message capability, emergency abort to an operator station and security features supplement the basic system.

  Recently Added Patents
Pre-fetching map data using variable map tile radius
Apparatus, electronic component and method for generating reference voltage
Modified polyolefin resin for glass fiber treatment, surface-treated glass fiber, and fiber-reinforced polyolefin resin
Method and system for dynamic digital rights bundling
Visual indicator of online backup
Artificial engine sound control unit, approaching vehicle audible system, and electric vehicle having them
Phase locking loop
  Randomly Featured Patents
Rod-mounted holder bracket for hand shower
Aromatic sulfonation reactions
Vehicle light including multi-focal lens and plurality of lighting elements
Method and apparatus for cutting blanks from webs of material
Non-invasive distraction system for ankle arthroscopy
Polypropylene resin composition, and film and sheet using the same
Apparatus for display movement of a laptop computer
Method of fabricating image sensors using a thin film photodiode above active CMOS circuitry
Transitional background for a portion of a display screen
Liquid crystal display and a method for fabricating the same