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
Wrench head
Uplink interference mitigation method and apparatus
Memory management configuration
Sample chamber for laser ablation inductively coupled plasma mass spectroscopy
Sperm factor sequences
Method and apparatus for using virtual machine technology for managing parallel communicating applications
Beaconing and superframe structure for millimeter wave wireless technologies
  Randomly Featured Patents
Conveyor belt for treatment of particulate solid material
Shared closures on demand
Method and apparatus for providing a private communication system in a public switched telephone network
Diet and activity-monitoring device
2-amino benzimidazole derivatives and their use as modulators of small-conductance calcium-activated potassium channels
Circuit for reducing distortion produced by an r.f. power amplifier
Cover plate construction for boat decks
Target game
Protein-coated medical substrates for local delivery of genes and method of forming coatings on the substrates
Smart digital modules and smart digital wall surfaces combining the same, and context aware interactive multimedia system using the same and operation method thereof