Patent ID: 7279999
Filing Date: 2007-10-09
Classification: H03K

Abstract:
1. An automatic page detector, consisting of a time base oscillator, a microprocessor, an array of magnets, and an array of LC oscillators; wherein each oscillator of said array of oscillators consists of an amplifier, an input capacitor, an output capacitor and an inductor; wherein said inductor is coupled to one magnet of said magnets array; wherein the frequency of said LC oscillator is determined by inductance of said inductor and capacitance of said input capacitor and said output capacitor; wherein the distance between said inductor and said magnet will affect the inductance of said inductor and frequency of said LC oscillator; wherein said time base oscillator provides system clock to said microprocessor; wherein said microprocessor calculates and processes the frequency counts for every said LC oscillators comparing said frequency counts with reference counts for each LC oscillators; thus which page of a book is opened can be determined.