One-way bus bridge

Abstract

A one-way bus bridge pair that transfers secure data in one direction, the bus bridge pair including a transmitting bus bridge, a receiving bus bridge, and a link. The link can connect the transmitting bus bridge and receiving bus bridge. The transmitting bus bridge may be arranged not to receive any data from the receiving bus bridge, and the receiving bus bridge may be arranged not to send any data to the transmitting bus bridge.

1 - 64 . (canceled) 
     
     
         65 . A one-way data transfer system that securely transfers data, at bus level utilizing only bus architecture, in only one direction without a capability to transfer any data in a reverse direction, the one-way data transfer system comprising:
 a transmitting bus;   a receiving bus; and   a one-way bus bridge pair connecting the transmitting bus and the receiving bus, the one-way bus bridge pair capable of transmitting data from the transmitting bus to the receiving bus, in only the one direction from the transmitting bus to the receiving bus and without the capability to transfer any data in the reverse direction from the receiving bus to the transmitting bus, and utilizing only bus architecture and only bus layer protocol without using network layer protocol.   
     
     
         66 . The one-way data transfer system of  claim 65 , wherein the one-way bus bridge pair comprises:
 a transmitting bus bridge configured to be a transmit-only device capable only of transmitting data without a capability to receive any data and capable of utilizing only bus layer protocol without using network layer protocol; and   a receiving bus bridge configured to be a receive-only device capable only of receiving data without a capability to transmit any data and capable of utilizing only bus layer protocol without using network layer protocol.   
     
     
         67 . The one-way data transfer system of  claim 66 , wherein:
 the transmitting bus bridge includes a transmitter, wherein the transmitter is connected to the transmitting bus via a first interface; and   the receiving bus bridge includes a receiver, wherein the receiver is connected to the receiving bus via a second interface,   wherein the transmitter accepts an input data from the transmitting bus and transmits the input data to the receiver via one-way communication over a transfer medium utilizing only the bus architecture and only the bus layer protocol and without using the network layer protocol; and   wherein the receiver obtains the input data from the first bus via the one-way communication over the transfer medium and supplies the input data to the receiving bus.   
     
     
         68 . The one-way data transfer system of  claim 67 , wherein the input data comprises at least a command from a device driver. 
     
     
         69 . The one-way data transfer system of  claim 67 , wherein the receiving bus bridge further comprises at least one buffer; and
 wherein the buffer is used to store the input data.   
     
     
         70 . The one-way data transfer system of  claim 67 , wherein the buffer connects the receiver and the second interface. 
     
     
         71 . The one-way data transfer system of  claim 67 , wherein the transmitter is directly connected to the first interface. 
     
     
         72 . The one-way data transfer system of  claim 67 , wherein the transmitting bus is directly connected to the first interface. 
     
     
         73 . The one-way data transfer system of  claim 67 , wherein the receiver is directly connected to the second interface. 
     
     
         74 . The one-way data transfer system of  claim 67 , wherein the receiving bus is directly connected to the second interface. 
     
     
         75 . The one-way data transfer system of  claim 67 , wherein the transfer medium includes a single direction fiber optic connection connecting the transmitting bus bridge to the receiving bus bridge for the one-way communication utilizing the bus architecture and the bus layer protocol and without using the network layer protocol. 
     
     
         76 . The one-way data transfer system of  claim 67 , wherein the transfer medium includes a single direction copper cable connection connecting the transmitting bus bridge to the receiving bus bridge for the one-way communication utilizing the bus architecture and the bus layer protocol and without using the network layer protocol. 
     
     
         77 . The one-way data transfer system of  claim 67 , wherein the transfer medium includes a single direction wireless connection connecting the transmitting bus bridge to the receiving bus bridge for the one-way communication utilizing the bus architecture and the bus layer protocol and without using the network layer protocol. 
     
     
         78 . The one-way data transfer system of  claim 67 , wherein the receiver includes a controlling device, wherein the controlling device controls the one-way communication between the transmitting bus bridge and the receiving bus bridge utilizing the bus architecture and the bus layer protocol and without using the network layer protocol.