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
Trim bead for a building wall
Image processing system adapted to eliminate a difference between stored image data and image data to be printed
Method for rapidly approximating similarities
Audio amplifier
Glycoside compounds and pharmaceutical compositions thereof
Dual flush handle
Device for cushioning of compression surfaces
  Randomly Featured Patents
Image forming apparatus with image fixing device including an induction heater and a shield located between two sections of a core of the induction heater
Method for the destruction of methylene iodide
Image forming apparatus belt having a detecting portion for position detection
Metal-to-metal sealing pipe swivel joint
Noise reduction system
Image scanning and recording method
Therapeutic liposome composition and method
Compositions for production of electronic coatings
Memory cell having a super supply voltage
Method for packaging chicken parts