DIGITAL PROCESSING OF SENSOR SIGNALS FOR READING BINARY STORAGE MEDIA

摘要

A method of processing an electrical signal produced by one or more sensors in a device for reading binary storage media, which signal represents a set of successive stored binary values. Digital values which represent a selection of two or more samples of the electrical signal are combined using digital circuits, to produce an intermediate digital representation held in shift register (502) of the samples of the selection. The intermediate digital representation is then processed (501, 505 and 506) to derive one of the binary values (522). These combining and processing steps are repeated for other selections of the samples to obtain the desired set of successive stored binary values.