Method and apparatus for text input
First Claim
Patent Images
1. A text entry apparatus, comprising:
- a keypad comprising four directional keys;
a display device; and
a parsing algorithm for determining a user intended text input based upon a received sequence of directional keys;
wherein eight sets of characters are defined, each set comprising at least two characters;
wherein a different two sets of the eight sets of characters are simultaneously assigned to each of the four directional keys,wherein a first individual actuation of a directional key selects all of the characters from one of the sets assigned thereto for the parsing algorithm; and
a second consecutive individual actuation of the same directional key selects all of the characters from the other set assigned thereto for the parsing algorithm;
wherein the parsing algorithm determines the user intended text input using a predetermined probability distribution that indicates, for one or more character set selections possible using the keypad, a probability that a user unintentionally performed a received actuation when the user intended to perform a different intended actuation;
wherein the parsing algorithm further determines the user intended text input by;
determining a context of the text entry apparatus comprising a set of elements including one or more of;
a set of songs, a set of contacts, or a set of stations; and
limiting possible user intended text inputs to the set of elements;
wherein, concurrently with the first individual actuation or the second consecutive individual actuation, the display device is configured to display, for each of the four directional keys, simultaneous indications of the different two sets of characters assigned to that directional key; and
wherein the sum of the characters in the four sets of characters that correspond to the first individual actuation of each of the four directional keys comprise all the characters in an alphabet.
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Abstract
A method and apparatus for text entry are provided. The method provides a keypad comprising four directional keys and a center selection key, and assigns a set of letters to each of the four directional keys. A representation of the set of letters assigned to each of the four directional keys is provided. A sequence of selected directional keys is received in accordance with a user input, and in accordance with the selected directional keys, the set of letters assigned to each of the selected directional keys are selectively passed to a parsing algorithm. The parsing algorithm determines a user intended text input based upon the passed sequence of letter groupings.
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Citations
22 Claims
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1. A text entry apparatus, comprising:
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a keypad comprising four directional keys; a display device; and a parsing algorithm for determining a user intended text input based upon a received sequence of directional keys; wherein eight sets of characters are defined, each set comprising at least two characters; wherein a different two sets of the eight sets of characters are simultaneously assigned to each of the four directional keys, wherein a first individual actuation of a directional key selects all of the characters from one of the sets assigned thereto for the parsing algorithm; and a second consecutive individual actuation of the same directional key selects all of the characters from the other set assigned thereto for the parsing algorithm; wherein the parsing algorithm determines the user intended text input using a predetermined probability distribution that indicates, for one or more character set selections possible using the keypad, a probability that a user unintentionally performed a received actuation when the user intended to perform a different intended actuation; wherein the parsing algorithm further determines the user intended text input by; determining a context of the text entry apparatus comprising a set of elements including one or more of;
a set of songs, a set of contacts, or a set of stations; andlimiting possible user intended text inputs to the set of elements; wherein, concurrently with the first individual actuation or the second consecutive individual actuation, the display device is configured to display, for each of the four directional keys, simultaneous indications of the different two sets of characters assigned to that directional key; and wherein the sum of the characters in the four sets of characters that correspond to the first individual actuation of each of the four directional keys comprise all the characters in an alphabet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 20, 21)
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8. A text entry apparatus, comprising:
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a keypad comprising four directional keys and a menu selection key; and a display; wherein actuation of the menu selection key allows for selection of a type of character to be entered by a user; wherein, upon selection of text entry in accordance with the menu selection key, two sets of characters are simultaneously assigned to each of the four directional keys, each set of characters assigned to the four directional keys comprising two or more characters each; wherein each letter of an alphabet is assigned to a directional key, wherein a first individual actuation of any of the four directional keys selects all of the characters from one set of characters assigned thereto, the selected characters provided to a parsing algorithm for determining a user intended text input based upon a received sequence of directional keys; wherein a second consecutive individual actuation of any of the four directional keys selects all of the characters from the other set of characters assigned thereto, the selected characters provided to the parsing algorithm for determining the user intended text input based upon the received sequence of directional keys; wherein the parsing algorithm determines the user intended text input using a predetermined probability distribution that indicates, for one or more character set selections possible using the keypad, a probability that a user unintentionally performed a received actuation when the user intended to perform a different intended actuation; wherein the parsing algorithm further determines the user intended text input by; determining a context of the text entry apparatus comprising a set of elements including one or more of;
a set of songs, a set of contacts, or a set of stations; andlimiting possible user intended text inputs to the set of elements; wherein, concurrently with the first individual actuation or the second consecutive individual actuation, the display device is configured to display, for each of the four directional keys, simultaneous indications of the two sets of characters assigned to that directional key; wherein upon selection of numbers in accordance with the menu selection key, a set of numbers is assigned to each of the four directional keys; and wherein upon selection of symbols in accordance with the menu selection key, a set of symbols is assigned to each of the four directional keys. - View Dependent Claims (9, 10, 11, 18, 19, 22)
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12. A method for text entry, comprising:
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assigning, to each of four directional keys of a keypad, a different two sets of characters such that each directional key is simultaneously assigned two sets of characters, wherein each set of characters assigned to the four directional keys comprise two or more characters, and receiving a sequence of indications of a character set, each indication of a character set comprising either a first individual actuation of a directional key or a second of two individual actuations of the directional key; wherein the first individual actuation of the directional key selects, as a selected set, all of the characters from one set of characters assigned thereto; and wherein the second individual actuation of the directional key selects, as the selected set, all of the characters from the other set of characters assigned thereto; concurrently with receiving at least one of the indications of the character sets in the sequence, displaying, for each of the four directional keys, simultaneous indications of the two sets of characters assigned to that directional key; sequentially passing the selected sets of characters to a parsing algorithm that; determines a user intended text input using a predetermined probability distribution that indicates, for one or more character set selections possible using the keypad, a probability that a user unintentionally performed a received actuation when the user intended to perform a different intended actuation; determines a context of the text entry apparatus comprising a set of elements including one or more of;
a set of songs, a set of contacts, or a set of stations; andlimits possible user intended text inputs to the set of elements; and receiving, from the parsing algorithm, the determined user intended text input based upon the passed sets of characters. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification