Annexure‐II
Redundancy of Sortie Information
1. FIELD OF THE INVENTION
The new invention is to establish the Sortie Information verification & correct Sortie
storage in Protected Memory module in order to ensure that the important data of
sortie information is not lost in case when the primary NVRAM (Non Volatile RAM) is
malfunctioning during Flight or during data down loading.
2. BACKGROUND OF THE INVENTION
During the time of flight military aircraft faces many environmental conditions and
recording/replaying of critical parameters are very essential for aircraft snags or
crash investigation or training purposes. Sortie information plays most important role
for storing data information of any flight of the aircraft. After completion of flight all
critical parameters are analyzed in Ground Equipment, if any corruption is found in
storing Sortie Information during flight, then Recorders malfunctions and it is very
difficult to retrieve/read back the information from Recorders (memory module). This
procedure is developed for redundant purpose to store sortie information at two
place, using NVRAM and flash Memory.
3. SUMMARY OF PRESENT INVENTION
In accordance with one aspect of present invention for simulating corruption in Sortie
Information, Non Volatile memory were made non accessible by software and
hardware.
In accordance with second aspect of present invention a memory map of 512 byte is
reserved in PMM (Consisting of Flash Memory) .Whenever the record condition is
met, whole sortie information is written at PMM (Protected Memory Module) &
NVRAM. Each second it is updated in the NVRAM, not in the Flash (PMM).
In accordance with another aspect of present invention when ever record condition
is off, it is written in PMM. In case of sudden power off, in next sortie, it searches the
frame data and on the basis of that sortie table is updated.
Annexure‐II
In accordance yet another aspect of present invention In case of failure of NVRAM
Software send the command to read sortie information from the PMM & sent it to
Ground Equipment during replay mode.
In accordance yet another aspect of present invention is to provide redundancy of
sortie Information at two places by using NVRAM and Flash.
4. BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1: It shows the Sortie information write a during Course of Initialization.
Figure 2: It shows the Sortie information activities during course of Reply mode
Figure 3: It shows the Sortie information read back setup during reply mode.
5. DETAILED DESCRIPTION
Referring to Figure 1,2& 3 , the present invention is a Redundancy of Sortie
Information at two places, using NVRAM & Flash Memory consists of printed circuit
board (PCB) assembly mounted with NVRAM, Flash Memory, Processor
(Microcontroller) and associated electronic circuitry for digital information storage.
The connection between the NVRAM, Flash Memory and associated equipment is
achieved through the interface connector socket which could be easily plugged into
a connector on the associated Ground equipment. A memory map of 512 byte is
reserved in Flash Memory .Whenever the record condition is met, whole sortie
information is written at PMM & NVRAM. Each second it is updated in the NVRAM,
not in the PMM. But when ever record condition is off, it is written in PMM. In case of
sudden power off, in next sortie, it searched the frame data and on the basis of that
sortie table is updated. Following activities done during Sortie information read:
1. Initially Built in Test of NVRAM & Flash RAM is performed with known
patterns of different combinations and establish fault/No fault condition
in memory.
2. As soon as pre-defined condition is met, sortie is incremented by one
(1) form previous one & store it in PMM & NVRAM ,simultaneously
store the latest twenty sortie.
3. To download the data from PMM, initially byte status of components
mounted on processor board to Ground Equipment is sent.
4. If NVRAM byte test pass, latest 20 sortie from NVRAM is passed to
ground equipment.
Annexure‐II
5. In case of byte failure of NVRAM, sortie information from the PMM is
read & sent to Ground Equipment.

CLAIMS:Accordingly, the description of the present invention is to be considered as illustrative only and is for the purpose of teaching those skilled in the art of the best mode of carrying out the invention. The details may be varied substantially without departing from the spirit of the invention, and exclusive use of all modifications which are within the scope of the appended claims is reserved. We Claim

1. The system as described, comprising,
- Atleast two non-volatile/permanent memories,
- Atleast a processor capable of controlling the said memories,
- A suitable power supply to energise the arrangement &
- Looms and cables to connect each other using suitable interface.

2. The system according to claim 1, further comprising an arrangement
- Capable of downloading data using a suitable mobile/immobile computing device,
- Necessary looms and cables to connect it to the arrangement.

3. The system according to claim 1, uses two non-volatile/permanent memory not necessarily mounted on same module.

4. The system according to claim 1, capable to store the Sortie information in both the non-volatile/permanent memories.

5. The system according to claim 1, capable to read the Sortie information from both the non-volatile/permanent memories.

6. The system according to claim 1, capable to store atleast 20 latest sorties in both the memories.

7. The system according to claim 1, capable of reading the sorties from another memory in case failure of other memory is detected.

8. The system according to claim 2, 5, 7, used to milk data as stored in memory.

9. The system according to claim 1, capable of assessing health of all the memories. ,TagSPECI:As per Annexure-II