Glass Cockpit Architecture
by: Douglas Eagleson 2010

A proper glass window cockpit display is a hard system to design.
Fault tolerance become the primary issue. A display of engine and
flight controls as a primary visual information panel becomes a
central control computer.

I have considered all architectures and have decided on a modifed
system than is commonly found. I invented a modified slave-master
communicattion system suitable for fighter aircraft. Homebuilts
should also avail themselves of this technology.

A glass central computer appears to be suitable as long as auxilary
display is available. Making slave instruments of ALL data displayed
on the glass window. Boot up time afteer poer failure is critical to
proper aircraft control an slave instruments should boot-up and
display data very very fast. A glass window trailing the slaves
allows for a controled recovery following power failures.

One communication line per slave. A multicommunication line master is
demanded. A custom operating system that allows even simple serial
lines as a network appears the best possible world of glass cockpits.
10 com lines are possible in MS-DOS. I would recommend this as a good
homebuilt aircraft glass master computer operating system.

Here is my invention.

A pole command on a serial line demands an answer from the slave.
Normally the issue ends here be close examination determines a fault
with this architecture. Timing of power failure recoveery means that
slave recovery must be faster than glass master recovery. Allowing a
valid communication at ALL times. Noise from a lightnening strike can
cause intermediate states of serial line validity. How to ALWAYS have
valid slave-master communication lines is the technolgy invention.

Invalid serial line communication recovery is critical also.

Making a special version of RS-232 a manditory invention to assure
valid glass operation. SEND-RECIEVE paired lines appears the failure.
A single line system always ensures valid communications. Mistiming
is vertually eliminated.

SO I propose a new RS-255 standard. Watch as a communication line
state appears necessary all the time for the slave and only briefly
for the master. Watching a single line enforces cpu code runtime
synchronization with communication line operation. When the code waits
it only has a certain time span window of waiting.

It is a critical technology for superior glass systems. RS-255.

Modifying MS-DOS to RS-255 is a very small task. Simply twist the
RS-232 send and recieve lines together and runtime code synchronize
the single RS-255 line.

It is hardly patentable so I send it out public domain. Fighter
quality slave-master communication is possible even in a homebuilt.