Acoustic coupler and data transmission apparatus using the same

Details Acoustic coupler and data transmission apparatus using the same Acoustic coupler and data transmission apparatus using the same

1990-06-26

1991-11-05

Dwyer, James L.

Telephonic communications

Telephone line or system combined with diverse electrical...

Having transmission of a digital message signal over a...

379444, 455 89, H04M 1100

Patent

active

050635905

ABSTRACT:
An acoustic coupler for a data communication device with a housing having a receiver and a coupling member mechanically coupling the receive housing and the transmitter housing. The acoustic coupler also includes a first microphone as part of the receiver for receiving an acoustic signal from a transmitter portion of a handset of a telephone, when the acoustic coupler is set to the handset. A first speaker is fastened to the second end of the receive part and outputting an acoustic signal to an operator, with yet a second speaker being fastened receiver portion of the housing for outputting an acoustic signal to a receiver portion of the handset. A second microphone is fastened to another part of the receiver which is for inputting an acoustic signal from the operator, and a coupling circuit for electrically coupling the first microphone, the second microphone, the first speaker and the second speaker to a data transmission apparatus. This arrangement allows for a more reliable connection of a data transmission device to the communication medium, be it radio or wired.

REFERENCES:
patent: 3496298 (1970-02-01), Crookshanks et al.
patent: 3553374 (1971-01-01), Wolf et al.
patent: 3882277 (1975-05-01), Depedro et al.
Fullmann, Rene: Elf Akustikkopplern aufs Bit geschaut in: Elo 9/1985, pp. 68-75.

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