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
Planarizing agents and devices
Plants and seeds of corn variety CV092363
Systems and methods for updating a data store using a transaction store
Method and system for Bluetooth low power link layer connection setup
Sense-amplifier monotizer
Method and device for determining a set of frequencies that can be used for transmitting information between radio transceivers of a network operating with frequency hopping
Semiconductor device with hetero-junction bodies
  Randomly Featured Patents
Wheel game with holes
Method for laser scanning flip-chip integrated circuits
Multiple functionality in a virtual storage area network device
Artificial Christmas trees
Video quality estimation apparatus, method, and program
Insulation work apparatus
Thermally and oxidatively stable solid lubricants
Thermostat with automatic heat/air conditioning changeover
Processor-implemented method for ensuring software integrity
Method for producing a cage of the ball bearing