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Browse by Category: Main > Communications
Class Information
Number: 379/368
Name: Telephonic communications > Supervisory or control line signaling > Substation originated > Plural-switch number input device (e.g., keypad)
Description: Subject matter including a manually actuated device having several switches for determining the content of the selective control signal.










Patents under this class:
1 2 3 4 5 6 7

Patent Number Title Of Patent Date Issued
8605889 Method and device for encoding characters and routing calls using expanded dual-tone multi-frequency (DTMF) encoding scheme Dec. 10, 2013
8564460 Keyboard device and method of identifying a key operation Oct. 22, 2013
8564461 Handheld electronic device and associated method enabling text input in a language employing non-roman characters Oct. 22, 2013
8559622 Multifunctional keyboard for a mobile communication device and method of operating the same Oct. 15, 2013
8498406 Integrated keypad system Jul. 30, 2013
RE44260 Dual keypad phone Jun. 4, 2013
8441445 Electrophoretic display keypad structure May. 14, 2013
8391468 Multifunctional keyboard for a mobile communication device and method of operating the same Mar. 5, 2013
8381137 Explicit character filtering of ambiguous text entry Feb. 19, 2013
8284925 Jack detection circuit Oct. 9, 2012
8254565 Hand-held device Aug. 28, 2012
8229077 Multi-use telephone test sets and related systems and methods Jul. 24, 2012
8208620 Hand-held device Jun. 26, 2012
8203467 Apparatus, method, and medium for expanding number of input channels Jun. 19, 2012
8196815 Secure card terminal using keypad scanning sequence determined by card Jun. 12, 2012
8104942 Light guide sheet and movable contact element using the same Jan. 31, 2012
8098814 Handheld electronic device with keyboard Jan. 17, 2012
8094806 Input devices and their use Jan. 10, 2012
8059810 Role-based programmable telephone keys Nov. 15, 2011
7817067 Apparatus for sensing button-pressed state and method therefor in mobile device Oct. 19, 2010
7808969 Voice over internet protocol (VoIP) ready computer system and method Oct. 5, 2010
7755520 Apparatus and method using color-coded or pattern-coded keys in two-key input per character text entry Jul. 13, 2010
7715882 Mobile terminal apparatus, character input method and character input program May. 11, 2010
7712053 Explicit character filtering of ambiguous text entry May. 4, 2010
7705752 Character input apparatus and method for mobile communications terminal Apr. 27, 2010
7684829 Input apparatus of a mobile terminal and a display method thereof Mar. 23, 2010
7636082 Dialing methods and related devices Dec. 22, 2009
7634080 Multifunctional keyboard for a mobile communication device and method of operating the same Dec. 15, 2009
7627110 Enhanced user functionality from a telephone device to an IP network Dec. 1, 2009
7610194 Dynamic database reordering system Oct. 27, 2009
7572023 Key module with multi-layer light guiding structure Aug. 11, 2009
7561685 Handheld electronic device with keyboard Jul. 14, 2009
7489775 Input method using standard numeric keypad Feb. 10, 2009
7444163 Mobile digital devices Oct. 28, 2008
7437184 Input device, especially for a mobile telephone, module comprising an input device, mobile telephone and method for the production thereof Oct. 14, 2008
7425904 Keypad circuit with electrostatic discharge protection Sep. 16, 2008
7397413 Communication unit provided with intra-changeable elements Jul. 8, 2008
7391861 Input devices and their use Jun. 24, 2008
7373180 Method and apparatus for accentuating graphical elements on a mobile handset housing May. 13, 2008
7362243 Apparatus and method using color-coded or pattern-coded keys in two-key input per character text entry Apr. 22, 2008
7356361 Hand-held device Apr. 8, 2008
7352363 Single finger or thumb method for text entry via a keypad Apr. 1, 2008
7348512 Key unit with reinforcing plate Mar. 25, 2008
7349688 Mobile communications terminal, application program execution state control method, and execution state control computer program product Mar. 25, 2008
7333602 Information entry system Feb. 19, 2008
7268705 Input detection based on speckle-modulated laser self-mixing Sep. 11, 2007
7266194 Self-lighting type push button input device Sep. 4, 2007
7259339 Enhanced key structure with combined keycap for a mobile computing device Aug. 21, 2007
7218727 Apparatus and method for inputting alphabet characters on small keypad May. 15, 2007
7209730 Telephone adapted for emergency dialing by touch Apr. 24, 2007

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