Patent ID: 6194978
Filing Date: 2001-02-27
Classification: H03C,H04L

Abstract:
A method of modulating an analog carrier with digital information, which comprises the steps of passing said analog carrier through a compensated analog switch;turning said analog switch off when said digital information is in a high state and turning said analog switch on when said digital information is in a low state;establishing a transition period of carrier to no carrier of a duration between 2 to 10 nanoseconds or faster;whereby said analog carrier is absent at the output of said analog switch when said digital information is in a high state and said analog carrier is present at the output of said analog switch when said digital information is in a low state thereby resulting in an interrupt modulated carrier; including the steps of equalizing the band width of the modulated carrier substantially to the band width of the analog carrier,and modulating said analog carrier with digital information at a rate of up to 100 megabits per second.