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Class Information
Number: 379/420.01
Name: Telephonic communications > Terminal > Having loudspeaking conversation capability (e.g., hands- free type or speakerphone)
Description: Subject matter which permits conversation with a user without physical contact with the terminal.

Sub-classes under this class:

Class Number Class Name Patents
379/420.04 Hands-free accesory or attachment 56
379/420.02 Hands-free loudspeaker feature 84
379/420.03 Hands-free microphone feature 57

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8670556 Multi-participant communication system with audio manager responsive to mode change requests Mar. 11, 2014
8611578 Charging cradle for a headset device and an earphone cover for the headset device Dec. 17, 2013
8600443 Sensor network system for acquiring high quality speech signals and communication method therefor Dec. 3, 2013
8582755 Headset with a retractable speaker portion Nov. 12, 2013
8560005 Mobile communication terminal and text-to-speech method Oct. 15, 2013
8477954 Controlling audio signals Jul. 2, 2013
8401513 Proximity sensor, in particular microphone for reception of sound signals in the human audible sound range, with ultrasonic proximity estimation Mar. 19, 2013
8401593 Enabling speaker phone mode of a portable voice communications device having a built-in camera Mar. 19, 2013
8369901 Hands-free telephony and in-vehicle communication Feb. 5, 2013
8326343 Mobile communication terminal and text-to-speech method Dec. 4, 2012
8280419 Adaptable communication techniques for electronic devices Oct. 2, 2012
8260343 Electronic devices including vertically mounted loudspeakers and related assemblies and methods Sep. 4, 2012
8260369 Vehicle hands-free communication apparatus and vehicle hands-free communication method Sep. 4, 2012
8213871 Data management tool Jul. 3, 2012
8144897 Adjusting acoustic speaker output based on an estimated degree of seal of an ear about a speaker port Mar. 27, 2012
8131322 Enabling speaker phone mode of a portable voice communications device having a built-in camera Mar. 6, 2012
8116500 Microphone orientation and size in a speakerphone Feb. 14, 2012
8112132 Mobile device having cord retractor Feb. 7, 2012
8112104 Adaptable communication techniques for electronic devices Feb. 7, 2012
8010056 Method of selecting one of dual antennas Aug. 30, 2011
7949120 Information processing system in which information expressing a current time point is transmitted from one computer to another for use in calculating an amount of delay in transferring data be May. 24, 2011
7940923 Speakerphone with a novel loudspeaker placement May. 10, 2011
7937125 Communications system providing automatic text-to-speech conversion features and related methods May. 3, 2011
7925312 Mobile terminal device Apr. 12, 2011
7869768 Techniques for controlling speaker volume of a portable communications device Jan. 11, 2011
7869386 Method and system for conveying media source location information Jan. 11, 2011
7844311 Mobile terminal having acoustic transducer and control method thereof Nov. 30, 2010
7796773 Communication device comprising sound-conveying means for two sound-producing modes Sep. 14, 2010
7760869 Method and apparatus for controlling the transmit volume level of a speakerphone Jul. 20, 2010
7689233 Remote switching for handset handsfree speakerphone Mar. 30, 2010
7646862 Speakerphone with a novel loudspeaker placement Jan. 12, 2010
7610016 System and method for providing an adapter module Oct. 27, 2009
7580685 Radio communication system Aug. 25, 2009
7529566 Speakerphone with a cellular phone connection May. 5, 2009
7519175 Integral microphone and speaker configuration type two-way communication apparatus Apr. 14, 2009
7469051 Method and apparatus for maintaining audio level preferences in a communication device Dec. 23, 2008
7450961 Portable communication device interface to a projection display Nov. 11, 2008
7433715 Mobile station for telecommunications system Oct. 7, 2008
7403611 Small size hands-free speakerphone apparatus Jul. 22, 2008
7352859 Audio earpiece for wideband telephone handsets Apr. 1, 2008
7333837 Universal hands-free unit for mobile telephones Feb. 19, 2008
7248902 Multi-mode power supply device of wireless earphone Jul. 24, 2007
7242970 Bluetooth.TM. hands-free kit structure Jul. 10, 2007
7231038 Eyeglasses with wireless communication features Jun. 12, 2007
7224992 Four pole stereo headset with push to talk capability in a duplex radio May. 29, 2007
7194084 System and method for stereo conferencing over low-bandwidth links Mar. 20, 2007
7092745 Portable electronics device with variable sound output Aug. 15, 2006
7050834 Vehicular, hands-free telephone system May. 23, 2006
7013009 Eyeglasses with wireless communication features Mar. 14, 2006
6987992 Multiple wireless microphone speakerphone system and method Jan. 17, 2006

1 2 3

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