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
Method for the treatment, alleviation of symptoms of, relieving, improving and preventing a cognitive disease, disorder or condition
Lifting apparatus
Modulators of cystic fibrosis transmembrane conductance regulator
Surfcraft fin
EpCAM as a reprogramming factor for non-pluripotent cells
Reflective non-invasive sensor
Method and apparatus to maintain welding current to compensate for deterioration of welding contact tip
  Randomly Featured Patents
Vegetable room for refrigerator
System and method for obtaining items at a traveler's destination
Semiconductor memory device and method of manufacturing the same
Fluid-elastomeric damper assembly including internal pumping mechanism
Portable radiographic image capturing device
Radar system for motor vehicles
Memory lifetime gauging system, method and computer program product
Split serial-parallel hybrid dual-power drive system
Hole saw
Method for installing a water well pump