Text entry on portable device

• US 6,528,741 B2
• Filed: 08/01/2001
• Issued: 03/04/2003
• Est. Priority Date: 08/02/2000
• Status: Expired due to Term

• Current Assignee: Uniloc 2017 LLC (SoftBank Group Corp.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Walker, David P.
• Primary Examiner(s): Scott, J. R.
• Application Number:
  US09/920,040
• Publication Number:
  US 20020014395A1
• Time in Patent Office: 580 Days
• Field of Search: 200/5.R, 200/5.A, 200/6.A, 200/512-517, 235/145.R, 341/22, 345/168, 345/169, 400/485, 400/486, 400/488, 400/489, 379/428-1-4, 455/90
• US Class Current: 200/5.00R
• CPC Class Codes: G06F 3/0234 using switches operable in different directions
• CPC Class Codes: H01H 2221/012 Joy stick type
• CPC Class Codes: H04M 1/2748 by matching character strings
• CPC Class Codes: H04M 1/724 User interfaces specially adapted for cordless or mobile telephones
• CPC Class Codes: H04M 1/72436 for text messaging, e.g. short messaging services [SMS] or e-mails
• CPC Class Codes: H04M 2250/70 methods for entering alphabetical characters, e.g. multi-tap or dictionary disambiguation methods for entering alphabetical characters per se G06F3/0237

Abstract

A portable electronic device has a keypad for entering alphanumeric characters including a plurality of single contact keys and a multi-way shift key. A character is entered by actuating a single contact key (2) alone or in combination with the multi-way shift key (3). The multi-way shift key (3) may be a four-way rocker switch, with each single contact key having five character labels, four of which are arranged to indicate the direction in which the rocker switch should be actuated to enter the corresponding character.

Claims

1. A character selecting system for selecting characters for entry into a portable electronic device, said character selecting system comprising:

a multi-contact key operable to activate one of N number of selection switch contacts, N being equal to or greater than 2; and

a single contact key operable to activate a character switch contact,

wherein said single contact key is associated with n number of characters, n being equal to or greater than 1,

wherein each character of the n number of characters corresponds to one of the N number of selection switch contacts, and

wherein a first character of the n number of characters is entered into the portable electronic device in response to concurrent activations of said character switch contact and a first selection switch contact of the N number of selection switch contacts, said first selection switch contact corresponding to the first character.

2. The character selecting system of claim 1,

wherein a confirmation of an entering of the first character into the portable electronic device is achieved by a deactivation of said character switch contact prior to a deactivation of said first selection switch.

3. The character selecting system of claim 1,

wherein a cancellation of an entering of the first character into the portable electronic device is achieved by a deactivation of said first selection switch prior to a deactivation of said character switch contact.

4. The character selecting system of claim 1,

wherein a second character excluded from the n number of characters and associated with said single contact key is entered into the portable electronic device in response to a concurrent activation of said character switch contact and deactivation of all of the N number of selection switch contacts.