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
Verbena plant named `Duempsopicha`
Morphinan compounds
Packaging for socks
Control of an electric machine
Secure soft SIM credential transfer
Flexible circuit routing
Access control method, information display device using the same, and information display system
  Randomly Featured Patents
Fungicide composition based on halosulphone in particular for packaging
Double helix, method of making same and spiral link belt made therefrom
Reproducing circuit having common base amplifier, low-pass filter and peak detector for use with magnetoresistive head
Computer monitor support arm
Modular office furniture system
Hybrid scrambled transmission coding
Container with removable drawer
Method and apparatus for audio/video synchronization
Push button arrangement for a device
Automatic espresso coffee machine