Patent ID: 6628596
Filing Date: 2003-09-30
Classification: G11B,H04L

Abstract:
A method for transmitting data, the method comprising the steps of:(a) selecting a notation system for representing data, with the notation system including digits that include at least three values for each digit; (b) encoding the data in a signal train by varying a parameter of the signal in accordance with the notation system to represent values of the data as expressed in the notation system; (c) impressing the encoded data on a carrier wave, and repeatedly transmitting the carrier wave with the data in block format that includes code signals; (d) receiving the carrier wave and decoding the data therefrom and recording the decoded data; (e) comparing subsequently transmitted data with recorded data, and indicating valid data received only if blocks or code signals are recognizable to be the same; and (f) at least one of reading and writing data using magnetization intensity levels for data recording locations on recording media for indicating the value of a digit of data recorded at each location, wherein the magnetization intensity levels corresponding to at least any three of the group consisting substantially of an erased state, a partially magnetized state, a fully magnetized state and a state including magnetization spins all aligned the same.