Information signal recorder/reader

Abstract

Abstract PURPOSE: To prevent the interruption of an information signal for position information by recording the bi-phase modulation position information of a required frequency spectrum for the frequency spectrum of the information signal by track modulation in the specified spot of an information zone. CONSTITUTION: A track portion 40 having a length L bi-phase modulated by track modulation and indicating the position information of 3 bits or the like following a synchronized track portion 43 bi-phase modulation recorded in the positive and negative directions of the length (1+1/2) L in a track 4. The frequency spectrum of the vibration of this track modulation is positioned roughly outside the frequency spectrum of an information signal 44, an optical reading signal is processed via a corresponding BPF and simultaneously read separately from the information signal 44. By this recording system, the recording interruption of the information signal is prevented by position information recording.

Inventors

• 👤 Maruchiin Rieinsuburuher Yohan

Bibliographic Details