Patent ID: 6617988
Filing Date: 2003-09-09
Classification: H03K,H03L,H04L

Abstract:
An apparatus for analogue information transfer which comprises a transmit circuit and a receive circuit, said transmit circuit communicating with the receive circuit through a transmission means, transmit circuit generating, from a first analogue signal, a first pulse signal which is transferred to the receive circuit via the transmission means, said receive circuit generating a second analogue signal from a second pulse signal, wherein the first pulse signal consists of a series of coded pulses, wherein a first code marks a positive flank, while a second code marks a negative flank, wherein the receive circuit comprises a shape generator which generates a shape signal with uniform and well-defined flanks from the second pulse signal, wherein the spacing between flanks approximately corresponds to the spacing between a first code and a second code in the first pulse signal, where rising and falling edges of the binary information are aligned with clock markings, where a refresh pulse identical with the preceding information pulse is generated, wherever the digital information does not have an edge at the respective clock marking, and wherein the receive circuit moreover contains a frequency generator which generates a clock sign on the basis of the coded pulses of the second and pulse signal, wherein a signal generator from a third pulse signal from the clock signal and the shape signal, said third pulse signal generating the second analogue signal after D/A demodulation.