Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Controller port switch arrangement for sharing stored data among different systems










Image Number 5 for United States Patent #4381543.

A switching arrangement is disclosed which permits storage devices to be shared by two separate controllers, each controller in turn receives commands and transfers the stored data to a different data processing system. The arrangement involves a plurality of subchannels, each of which comprises at least one addressable storage device and two addressable interlocked port switches, each of which functions to connect one side of the subchannel and the device to one of the controllers. The subchannel switching arrangement is characterized by each switch being addressable as if it were another device, which permits the port switches to be implemented with minimal changes to either the controller or the device.








 
 
  Recently Added Patents
Weight-balanced polygonal mirror, light scanning unit using the polygonal mirror, and image forming apparatus
Oscillation circuit
Dual-leadframe multi-chip package and method of manufacture
Security authentication method, apparatus, and system
Bio-pesticide and method for pest control
Photoacoustic joulemeter utilizing beam deflection technique
Method for testing multi-chip stacked packages
  Randomly Featured Patents
Golf ball dispensing and teeing device
Method to pattern small features by using a re-flowable hard mask
Method for adding plasma treatment on bond pad to prevent bond pad staining problems
Hybrid circuit device
Portable, dock-mounted fishing pole holder
Nonvolatile memory sensing circuit and techniques thereof
Process for producing irradiated multilayer film for primal meat packaging
Non-stick polymer-coated articles of manufacture
Method and apparatus for monitoring and treatment of sleep-related conditions
Composite cryogenic tank apparatus