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 that “CONTROL UNIT” for FDR system

1. Utilizes minimum configuration in terms of resources. It provides
a) The controls for the FDR
b) Facility for amplifying the MIC input signal Is not using any separate dedicated external memory.
c) Self-test and facility for erasing voice data of previous flight when it on ground.
2. Can be interfaced with any FDR with connector interface.
3. Is for use on Civil/Military aircraft for airborne application. However, the invention is not limited to airborne application and can be used control signal is required for Flight Data Recorder System
4. The Control Panel unit is a sub-system of FDR mounted separately.
5. A compression technique has been implemented to compress the audio data which may store in less memory space.
6. One MIC input from area microphone and amplified MIC signal Output
7. LED Visual Indication for test results
8. Test and Erase input signals
9. Tone output ,TagSPECI:Refer Annexure-1