Method, keyboard and system for transmitting key characters

Details Method, keyboard and system for transmitting key characters Method, keyboard and system for transmitting key characters

1997-10-10

2000-02-22

Horabik, Michal

Coded data generation or conversion

Bodily actuated code generator

Including keyboard or keypad

341 22, 341 26, 345168, H03K 1794

Patent

active

060285389

ABSTRACT:
A method for transmitting key characters representative of keys on a keyboard is provided. A probability of use for one or more of the key characters may be determined by counting the number of occurrences of the key characters for a predetermined time period or for a literary work. Alternatively, the number of occurrences of one or more of the key characters may be calculated in real time and the probability of use adjusted accordingly for the key characters. Based on their calculated probability of use, the key characters are mapped into transmission formats. A system and a keyboard are also disclosed which map key characters into transmission formats based on probability of use of the key characters. Additional methods are disclosed for using error detection data in the transmission formats. Exemplary error detection may include adding parity bits or configuring the data in the transmission formats to indicate errors. Further methods are provided for providing unique addresses in the transmission formats to differentiate between key characters sent from one keyboard and key characters sent from another keyboard.

REFERENCES:
patent: 5189543 (1993-02-01), Lin et al.
patent: 5515051 (1996-05-01), Tanaka et al.
patent: 5585792 (1996-12-01), Liu et al.
patent: 5684471 (1997-11-01), Bernardi et al.
patent: 5724106 (1998-03-01), Autrys et al.
patent: 5737107 (1998-04-01), Umeda
patent: 5818437 (1998-10-01), Grover et al.

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