Don Q Pham

7561072, Jul 14, 2009

Nov 19, 2007

11/942011

Don Pham - Longwood FL, US

H03M 11/00

341 23, 341 21, 341176, 345160, 345166, 379 9001

This invention discloses an interactive sequential system to input letters of the English alphabet and of many world languages, numbers, punctuation marks and many other symbols on keypads with few buttons. The invention includes a device for receiving input characters from a user, having a keypad with a plurality of keys arranged in rows and columns forming a keypad array; a display screen showing a plurality of character sets arranged in rows and columns forming a character set onscreen array wherein each element in the character set array is mapped to each element in the keypad array; and a processor for receiving a selection of one of the plurality of keys on the keypad to designate a character set by its corresponding location coordinate as mapped on the keypad array. Sequential key selection drills down through nested arrays.

20060267804, Nov 30, 2006

May 16, 2006

11/383605

Don Pham - Longwood FL, US

B41J 5/00

341022000, 400486000, 379093270, 379368000

This invention discloses a sequential two-key system to input letters of the English alphabet and of many world languages, numbers, punctuation marks, page-control characters, line-control characters, cursor-control characters and many other symbols on keypads with few buttons. Character repeating, shifting and control access are feasible. Brief and easy to understand notations are displayed on the keypads. The system is easy to learn and the keypads may be used on portable devices such as PDA, hand-held computers, hand-held text-messaging devices and telephones.