 Portable wireless device |
| In view of the foregoing, an object of this invention is to provide a portable wireless device in ... |
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| Method of defining short keys used to select desired functions of a communication terminal by the user |
| OF THE PREFERRED EMBODIMENT In the following description, for purposes of explanation rather than ... |
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| Memory call origination system for automatically originating a call to a calling party |
| It is therefore an object of the present invention to provide a memory call origination system ... |
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| Drive circuit modal filter for a vibrating tube flowmeter |
| Coriolis Flowmeter in General--FIG. 1 FIG. 1 shows a Coriolis flowmeter 5 comprising a Coriolis ... |
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| Quadrature signal generator with feedback type frequency doubler |
| The present invention has been made in view of the above mentioned problems, and an object of the ... |
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| System and method for locating misplaced items |
| A system for locating lost keys or other items includes a compact, pocket-sized device that ... |
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| Voice mail intervention |
| The present invention comprises a system, method, and apparatus for retrieving a telephone call ... |
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| Wireless centrex call screen |
| The instant invention addresses this need for an untethered communication systems created by the ... |
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| Location updating in a cellular radio system |
| An object of the present invention is a cellular radio network in which the signalling load caused ... |
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Digital cordless telephone with speakerphone in a remote handset
| Details |
Inventors: Iyengar, Vasu; Popa, James Charles;
Assignee: Agere Systems Inc. (Allentown, PA)
Primary Examiner: Nguyen; Lee
Assistant Examiner: Persino; Raymond B.
Attorney, Agent or Firm: Bollman; William H.
A digital cordless telephone combines speakerphone control information together with voice data information in each of a plurality of data packets transmitted between the remote handset and the base unit while the remote handset is operating in a speakerphone mode. To allow half-duplex speakerphone functionality in the digital remote handset, the speakerphone control information includes break-in information relating to a break in by the user of the remote handset into an ongoing conversation. To allow full-duplex, echo cancellation mode operation of the speakerphone functionality at the digital remote handset, the speakerphone control information includes coordinating information relating to an amount of echo cancellation performed by the base unit and by the remote handset. In the disclosed embodiment, the speakerphone control information further includes switching and signal level information. |
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DETAILED DESCRIPTION In accordance with the principles of the present invention, a digital packet transmitted between a base unit and a remote handset of a digital cordless telephone comprises speakerphone control information adapted to allow speakerphone functionality in the remote handset, and voice data information relating to a telephonic conversation.
A digital cordless telephone in accordance with another aspect of the present invention comprises a base unit comprising a controller, an RF transmitter, and an RF receiver.
A remote handset comprises a controller, a speakerphone including a microphone and a speaker, an RF transmitter, and an RF receiver.
A digital communication link is coupled between the base unit and the remote handset.
The digital communication link is adapted to digitally transmit information packets between the base unit and the remote handset in a half-duplex mode.
The information packets comprise voice data and control information, the control information comprising break-in indicia indicating an occurrence of a break-in communication emanating from the microphone of the remote handset or a line-in signal from the base unit.
A digital cordless telephone in accordance with yet another aspect of the present invention comprises a base unit comprising a controller, an RF transmitter, and an RF receiver.
A remote handset comprises a controller, a speakerphone including a microphone and a speaker, an RF transmitter, and an RF receiver.
A digital communication link is coupled between the base unit and the remote handset.
The digital communication link is adapted to digitally transmit information packets between the base unit and the remote handset in a full-duplex echo cancellation mode.
The information packets comprise voice data and control information.
The control information comprises echo cancellation information indicating an amount of echo cancellation performed by a transmitting one of the base unit and the remote handset.
A method of implementing a speakerphone function in a cordless telephone system in accordance with yet another aspect of the present invention comprises providing a base unit comprising a controller, an RF transmitter, and an RF receiver
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Ring Tones 
