SOUND REPRODUCING AND OPTICAL PROJECTOR FUNCTION CONTROL APPARATUS

摘要

A sound reproducing apparatus includes a two channel magnetic tape and transducing head with associated circuitry. A first channel records and reproduces sound. A second channel reproduces and records function control information for controlling the function of an optical projector. The second channel may be used to reproduce and record function control information for controlling the magnetic tape drive motor, or other selected functions. Function control information is in the form of pulses at distinctive frequencies.