Signal Processing Application - Morse Code

   This was a Group Experiment performed by Aishwarya Bannore, Varad Choudhari, Gauri Joijode, Amisha Khimani and Apoorva Laharia. We choose "Morse Code Generator from a given Analog Signal" as an application.

Problem Definition :
1) Accept Analogy input and convert it into Digital Signal(Binary).
2) Covert Binary to Morse and implement the dots and dashes as 0 and 1 respectively.
    (Dots = 1 = LED ON, Dash = 0 = LED OFF)

Patent Review :International Morse Code Number GeneratorPatent Number :- US4292624
Inventors :- Serp William K.
Publication Date :- 09/29/1981
Application Number :- 05/517813

Summary :- 
Morse code is a code in which letters are represented by combinations of long and short light or sound signals.It transmits text as a series of on-off tones,lights or clicks. The code which is to be transmitted is loaded into preset-able counters.Switch mean is used to connect the  binary level to a specific memory location.The counter thereby sends data sequentially generating Morse Code.It sends one digit at a time.The next lesser significant digit to the address and binary counter are recycled. Switching means are used for the generation of leading zeros and for selectively abbreviating the international Morse code of certain digit comprising the numbers.

Applications:-
It allows physically handicapped person to communicate by the means of tap or blink.
In aviation, pilots use the Morse code to ensure whether the stations are servicable or not by transmitting a short set of identification numbers.

Patent's Link :- International Morse Code Generator

IEEE Paper Review:
Automatic Morse Code recognition with adaptive variable ratio threshold prediciton for physically handicapped persons.Authors :- Ching-Hsing Luo
                 Ming-Che Hsien
Publisher :- IEEE
Published in :- Engineering in Medicine and Biology,1999. 21st annual conference and the 1999 annual fall meeting of biomedical engineering society.
Date of Conference :- 1999

Summary:-
Morse code helps physically impaired persons to communicate easily. However they have difficulties in maintaining a stable type. Hence the threshold and prediction method is in demand. In threshold prediction, the Morse code time series with unit time period and ratio are used.Two least mean square predictors are applied to trace the dash and the dot interval and the dot-dash difference and a predicted threshold based on a variable ratio decision rule is used to distinguish between dashes and dots. The same method is applied to identify the character space.

Paper's Link :- Predictive threshold Morse Code

The link to the IEEE paper on our application and its plagiarism report is mentioned below:-
Plagiarism
Morse Code Generator