US4924520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Defining aircraft protocol by shorted pins
Assignee: Grumman Corp
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Filing: 1988-10-17
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Granted: 1990-05-08
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Expires: 2008-10-17
Abstract
Abstract Data protocol and format parameters are encoded by a modified connector located between a data source and a receiving memory. The modification includes the opening or shorting of pin connectors in a unique pattern corresponding to particular protocol and format parameters of a data utilization device.
Inventors
- 👤 Melvin Kolbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:12
CPC Classifications
H; H04; H04L; H04L9/00; H04L9/40; H04L69/00; H04L69/30; H04L69/32; H04L69/322; H04L69/323
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
110 words
A method for initializing security data communication between a portable data source and bidirectional data utilization devices on board an aircraft, the method comprising the steps: mechanically modifying normally connected pins of an electrical connector between a microprocessor on board the aircraft and a utilization device which establishes a coded bit pattern corresponding to data format and protocol requirements of the device; communicating the coded bit pattern from the microprocessor to the source; subsequently transmitting data from the source to a buffer memory in the required format and protocol; and reading out the data from the memory to the utilization device through normally retained connected pins of the electrical connector.
Claim 2
Independent Claim
110 words
A method for initializing security data communication between a portable data source and bidirectional data utilization devices on board an aircraft, the method comprising the steps: mechanically modifying normally connected pins of an electrical connector between a microprocessor on board the aircraft and a utilization device which establishes a coded bit pattern corresponding to data format and protocol requirements of the device; communicating the coded bit pattern from the microprocessor to the source; subsequently transmitting data from the source to a buffer memory in the required format and protocol; and reading out the data from the memory to the utilization device through normally retained connected pins of the electrical connector.
Claim 3
Dependent Claim
21 words
The method set forth in claim 1 wherein the mechanical modification comprises the step of short-circuiting preselected pins of the connector.
Claim 4
Dependent Claim
21 words
The method set forth in claim 1 wherein the mechanical modification comprises the step of open-circuiting preselected pins of the connector.
Claim 5
Dependent Claim
26 words
The method set forth in claim 1 together with the step of inductively coupling all signals between the source and the memory through an aircraft skin.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-07 | 1993-11-06 | 1994-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-07 | 1997-11-06 | 1998-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-07 | 2001-11-06 | 2002-05-08 | $7700.00 | Window Closed / Lapsed |