Resources Contact Us Home
Peripheral unit controller

Image Number 8 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
Process for the preparation of ethylene homopolymers or copolymers in a high-pressure reactor controlled by a model based predictive controller
Lithographic apparatus and device manufacturing method
Sampling filter device
System and method for managing content on a network interface
Computer-implemented method of constructing a stock index using index rotation
Protective circuit board and battery pack using the same
Dielectric insulation medium
  Randomly Featured Patents
Olefin polymerization process
Transaction tray with communications means
Interrogating multi-featured arrays
Electronic measurement apparatus having a function to a display a function menu over a plurality of pages in a list and function menu display method
Grooving blade for textile core
Spring for knife
Remote control
Copying using pyroelectric film
Dishwashing machine
Combined bottle and cap