![]() Regardless, each key for the characters from the most frequent key-pairs (digraphs) is placed under different hands, on the middle row, and under the strongest fingers (i.e., the index and the middle fingers). Thereafter, one or more metaheuristic optimization algorithms such as a tabu search, genetic algorithm, simulated annealing, or ant colony optimization algorithm may be employed to optimize the keyboard layout. ![]() The percent of frequencies of characters and the frequencies among pair of the characters (e.g., digraph values) is determined. ![]() A frequency analysis is then carried out on the texts, both of the characters, and among characters (i.e., monograph and digraph). In one implementation, this corpus is created using gathered texts, for example texts from leading (e.g., public domain) e-books that are available on the Internet or in libraries. The first step for developing a keyboard layout is to determine both monograph and digraph of the characters used in writing in the subject language. arrangements for interpreting keyboard generated codes as alphanumeric codes, operand codes or instruction codes G06F3/023- Arrangements for converting discrete items of information into a coded form, e.g.G06F3/018- Input/output arrangements for oriental characters.G06F3/02- Input arrangements using manually operated switches, e.g.G06F3/01- Input arrangements or combined input and output arrangements for interaction between user and computer.G06F3/00- Input arrangements for transferring data to be processed into a form capable of being handled by the computer Output arrangements for transferring data from processing unit to output unit, e.g.208000001254 Occupational Disease Diseases 0.000 description 1.206010073713 Musculoskeletal injury Diseases 0.000 description 1.238000002922 simulated annealing Methods 0.000 description 2.230000002093 peripheral Effects 0.000 claims description 5. ![]() Publication of US20130335331A1 publication Critical patent/US20130335331A1/en Application granted granted Critical Publication of US9041657B2 publication Critical patent/US9041657B2/en Status Active legal-status Critical Current Adjusted expiration legal-status Critical Links Assignors: OSMAN, MOHAMED ZAKI RAMADAN, MR. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by King Saud University filed Critical King Saud University Priority to PCT/US2011/037067 priority Critical patent/WO2012158170A1/en Assigned to KING SAUD UNIVERSITY reassignment KING SAUD UNIVERSITY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Original Assignee King Saud University Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) ( en Inventor Mohamed Zaki Ramadan Osman Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Active, expires Application number US14/001,169 Other versions US20130335331A1 ![]()
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