Patent ID: 6842711
Filing Date: 2005-01-11
Classification: G11B

Abstract:
1. A system for calibrating a signal producing apparatus, said signal producing apparatus being able to produce a plurality of signals having a first signal, said system comprising: a detecting means used for receiving said plurality of signals and outputting a plurality of analog signals having a first analog signal which related to said first signal; a measuring means used for receiving said plurality of analog signals and outputting a plurality of digital signals having a first digital signal which related said first analog signal; a memory means used for saving a set of standards, wherein said standards are the corresponding relation between a plurality of standard signals and a plurality of standard digital signals, said plurality of standard signals being output from a standard signal producing apparatus, said plurality of standard signals being received and processed by said detecting means and said measuring means for generating said plurality of standard digital signals; a judging means used for reading said standards from said memory means and receiving said first digital signal, wherein said first digital signal is larger than a second digital signal and smaller than a third digital signal, both said second digital and said third signal being in the range of said standards, said judging means further calibrating said first signal by using said first, second, and third digital signals.