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US 4,396,802 AGranted
Aswixs remote speaker and handset set
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorDennis P. Hurst
Life of this patent
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Abstract
A remote speaker and handset unit is interfaced with a satellite communicons system and a number of common users. A vocoder is interposed between each unit and the communications system to enable a real-time voice modulation-demodulation with suitable encryption. Means are provided for permitting a user to listen over a loudspeaker and to interrupt the loudspeaker with the handset when it is desired to transmit a transmission.
Claims1
In a communication system having a number of users each connected through a vocoder an improvement therefor is provided comprising:
- a speaker for audioly broadcasting the communications of the system;
- a keyed handset having an earphone and a microphone for providing a restricted listening to the communications of the system and for entering audio communications into the system;
- a push-to-talk switch connected to a first solenoid switch electrically coupled to the speaker and to a second solenoid switch electrically coupled to the keyed handset for selectively decoupling the speaker from the system and for selectively coupling the keyed handset having an earphone and a microphone into the system when the speaker is decoupled and vice versa and
- at least one suitably connected pin header for interfacing the speaker, the keyed handset and the push-to-talk switch.
1 more element
Dependencies are inferred from the claim text.