Perry E. Metzger sez:
Uhh, could you tell us? Sounds like quite a breakthrough. Credit card sized? Much cheaper than a modem, like $50 maybe? And it digititizes and securely encrypts speech (full duplex?) on the fly?
By definition anything that does this in the digital domain needs a modem, so it can't be cheaper than a modem. None of the analogue methods are going to be terribly secure.
Remember that a "modem" such as we are used to is a much more complex device (at least the firmware, and you do pay for that :-) than what is required for simply modulating and demodulating a fixed rate, framed bit stream. Today's modem chip sets invariably have a general purpose microprocessor to do all the Hayes type stuff and a DSP to do the actual bit stream modulation/demodulation (and digital filtering and echo cancelation, etc.) where my device can be the DSP alone and requires no RS232 ports or the like. This will result in a saving. In short, what is required for a voice-only device such as I am initially thinking about is a subset of what is required for a computer modem. Peace, Bob -- Bob Cain rcain@netcom.com 408-354-8021 "I used to be different. But now I'm the same." --------------PGP 1.0 or 2.0 public key available on request.------------------