Resources Contact Us Home
Frequency hopping in digital cellular networks

Image Number 2 for United States Patent #5430713.

A circuit is for providing frequency hopping in a Time Division Multiple Access (TDMA) system. A microprocessor determines the frequency to be transmitted in a particular broadcast frame. A dual port random access member (RAM) provides an interface between the microprocessor and a time division multiplex bus so that the time slots are mapped to addresses in the memory. A plurality of transceivers coupled to the bus transmits and receives at different designated frequencies, the transceivers being chosen for particular users during a particular broadcast frame based on the location in the memory chosen by the microprocessor.

  Recently Added Patents
Controlling a video window position relative to a video camera position
Method of transmitting and receiving a paging message in a mobile communication system
Image-monitoring method for electroporation treatment and as associated image-monitoring appliance
Electrode structure and its manufacturing method, and semiconductor module
Optoelectronic semiconductor chip comprising a reflective layer
System and method for ranking content and applications through human assistance
Pear-shaped convertible reading glasses
  Randomly Featured Patents
GPS for telephone line records
Machine for laying conduct and methods for use thereof
Cylinder injection type internal combustion engine, control method for internal combustion engine, and fuel injection valve
Method of system for creating an electronic message
Two-component preparations containing epoxy compounds
Finger ring
Mobile phone
Flap development device and method of progressively increasing skin area
Memory module having signal lines configured for sequential arrival of signals at a plurality of memory devices
Liquid cleaning and disinfecting compositions comprising a zinc inorganic salt