Resources Contact Us Home
Peripheral unit controller

Image Number 6 for United States Patent #4428044.

A synchronization scheme is used in a peripheral unit controller which consists of two duplicated units whose outputs are matched. In addition, each duplicated unit contains a pair of microprocessors whose outputs are also matched. The synchronization scheme allows each microprocessor to run its own diagnostics independently, and to synchronize itself with the other microprocessor of the pair. After the synchronization occurs in both microprocessor pairs, the duplicated units are synchronized. Synchronization is achieved by using a real-time clock and the interrupt structure of each microprocessor.

  Recently Added Patents
Image processing apparatus, remote management system, license update method, and computer program product
Systems and methods to provide communication history for communication devices
Near-field optical disk having surface plasmon amplification by stimulated emission of radiation
Thermochromic microparticles, dispersions thereof, and manufacturing method thereof, as well as light-modulating coatings, light-modulating films and light-modulating inks
Methods and devices for creating, compressing and searching binary tree
Device, system, and method for logging near field communications tag interactions
Input system including position-detecting device
  Randomly Featured Patents
System and method for home energy monitor and control
Filter assembly with lockable lug means
Fuel supply device for fuel returnless system
Method for manufacturing fluid compression/compressor rotor
Data collection system having EIR terminal interface node
Electronic system for providing specificity in an electrochemical analytical device
Filter system for hearing protection device for continuous noise exposure monitoring
Shallow draft boat
Method and apparatus for detecting high level white noise in a sequence of video frames