A method of selecting characters from a keypad, and a telephone set operating according to this method
CA 2214709 C · Owner: Telefonaktiebolaget Lm Ericsson · Inventors: Van Der Salm, Peter; Ten Wolde, Jan Hendrik Louis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed a method of selecting characters from a group of characters assigned to a single key, in particular a key of a telephone dialling keypad. Actuation of a key (8; 16) invokes a cursor controlled display of the characters (2; 18). The cursor is held at a particular position (11) while a key is actuated within a predetermined time interval (t1; 6 7). The character , string corresponding to a particular key actuation is read (18) and is used for the retrieval of the closest matching data entry from memory means (19). If the key is not further actuated within this time interval (t1) the cursor , is moved to a next position (22) provided the selected character string …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed March 8, 1996 and granted January 16, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 8, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 8, 2018.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.