BUS PROTOCOL FOR CONTROL OF COMMUNICATIONS BETWEEN TWO COMPUTERS
First Claim
1. A method for operating a communications bus between a first computer and a second computer, the method comprising:
- monitoring a receiver bus coupled to the first computer for activity;
confirming that communications are determinant, the confirmation comprising;
receiving a control label on the receiver bus; and
acknowledging to the second computer through a transmitter bus coupled to the first computer that communications are determinant; and
enabling the second computer to access data accessible by the first computer when the communications are confirmed determinant.
1 Assignment
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Accused Products
Abstract
A method for operating a communications bus between a first computer and a second computer is provided. The method comprising monitoring a receiver bus coupled to the first computer for activity and confirming that the communications are determinant. The communications are confirmed by receiving a control label on the receiver bus and acknowledging to the second computer through a transmitter bus coupled to the first computer that communications are determinant. The method also comprises enabling the second computer to access data accessible by the first computer when the reliability of communications is confirmed.
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Citations
20 Claims
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1. A method for operating a communications bus between a first computer and a second computer, the method comprising:
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monitoring a receiver bus coupled to the first computer for activity; confirming that communications are determinant, the confirmation comprising; receiving a control label on the receiver bus; and acknowledging to the second computer through a transmitter bus coupled to the first computer that communications are determinant; and enabling the second computer to access data accessible by the first computer when the communications are confirmed determinant. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A communication system for an aircraft to communicate externally, the system comprising:
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an avionics computer onboard the aircraft; a first ARINC 429 receiver interface coupled to the avionics computer; wherein the avionics computer enters into an alteration mode upon receipt of a control label through the first ARINC 429 receiver interface; and wherein the alteration mode enables sensitive data accessible by the avionics computer to be altered. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A program product for an avionics computer to communicate with a user computer over a data bus using a ARINC 429 standard, the program product comprising a processor readable medium on which program instructions are embodied, wherein the program instructions are operable, when executed by at least one programmable processor included in the avionics computer, to cause the avionics computer to:
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confirm that communications are determinant when a control label is received on a receiver bus, wherein the control label is a three bit octal label in the range of 300 to 377; and when the communications are confirmed to be determinant, enable the user computer to access one or more data structures accessible by the avionics computer. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification