The programmable modem for digital data of the present invention provides a highly programmable, digital modem implemented in an integrated circuit which can be customized to specific applications. The programmable modem uses spread spectrum techniques and is specifically programmable to alter the parameters...http://www.google.com.au/patents/US6597727?utm_source=gb-gplus-sharePatent US6597727 - Programmable modem apparatus for transmitting and receiving digital data, design method and use method for the modem
