Patent ID: 6429838
Filing Date: 2002-08-06
Classification: G09G,H03M

Abstract:
A correlation demodulating apparatus, comprising:means for receiving an analog signal formed by compressing at least two parallel bit data and a key clock synchronized with the analog signal; quantizing means for quantizing the analog signal from the receiving means to form a quantized analog signal, wherein the quantizing means includes at least (2nâˆ’1) level detectors connected in parallel between the receiving means and the coding means, each level detector being configured to detect different voltage levels of the analog signal, wherein each of the at least (2nâˆ’1) level detectors comprises: a transistor controlled by the analog signal from the receiving means; and output voltage control means connected to the transistor to output the quantized analog signal to the coding means in response to the analog signal, wherein the output voltage control means includes a pull-up resistor; coding means for coding the quantized analog signal to reconstruct the at least two bit parallel data; and reverse aligning means for aligning the at least two parallel bit data using the key clock.