Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2001-11-02
2004-12-28
Hudspeth, David (Department: 2681)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S556100, C455S575100, C455S090300, C379S420010, C379S420040
Reexamination Certificate
active
06836676
ABSTRACT:
BACKGROUND
1. Technical Field
This invention relates generally to speakerphones, and more particularly, to a speakerphone module having a universally accommodating form factor that is connectible to either a cellular telephone or battery charger.
2. Background Art
Conference calls have become an everyday occurrence in business. Speakerphones are often used during these conference calls. Due to their relatively small size, cellular telephones are generally not well suited for use as speakerphones. As the normal audio output from a cellular phone is designed for single-user, close range only, it is difficult for large numbers of people to huddle around a cellular phone and hear the caller on the other end. People attempting to do this often bump heads with each other and become quite grouchy.
To alleviate this problem, manufacturers have developed speakerphone accessories. These speakerphones couple electrically and mechanically to the cellular telephone to provide speaker phone functionality. The units often involve speakerphone circuitry that is built into a cellular battery-charging unit. Sometimes the recharging units are desktop chargers (meaning they charge a battery on the phone only) or multi-chargers (meaning that they also charge a spare battery). As the user must buy a desktop charger just to get a speaker phone accessory, this design greatly limits a consumer's choice. Additionally, the user must aim the speaker of the speakerphone in his or her direction for maximum effectiveness. This “aiming” is cumbersome and time consuming.
There is thus a need for an improved speakerphone accessory.
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Baxter Charles S.
Faerber Paul James
Lloyd Grant Harries
Townsend David
Afshar Kamran
Burrus, IV Philip H.
Hudspeth David
Motorola Inc.
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