Audio-visual apparatus and record member therefore

Claim 1

An audio-visual apparatus comprising in combination: a record disc assembly composed of concentrically arranged first and second disc members, means for rotatably supporting one of said disc members with respect to the other and means for separately power rotating both of said disc members about a common axis, a spiral groove formed in a first of said disc members, magnetic recording material defining a spiral track on said firsT disc member, said second disc member being provided with a plurality of image frame locations extending in a circular track which is concentric with said first disc member and means for removably securing at least one photographic image containing member at each of said frame locations, first means for rotating said first disc member at substantially constant speed, means for holding said second disc member from rotating while said first disc rotates, a projection optical system including means for projecting light through a selected frame of said second disc member, means for receiving said projected light and displaying an image of the frame photographic containing member scanned, means for selectively rotating said second disc member to selectively bring each of said photographic image containing members into the field of said projection optical system, a pivoted arm including a needle operative to ride in and follow the groove in said first disc member as said disc member rotates, a magnetic transducer supported by said pivoted arm and located thereon to scan said spiral magnetic track when said needle is riding in said spiral groove of said first disc member, amplifier and speaker means operatively connected to said magnetic transducer for generating audio playback of the recordings on said spiral magnetic track as said magnetic transducer reproduces signals therefrom, electrically operated means for causing said second disc member to step rotate to remove and replace one photographic image containing member disposed in the field of said projection optical system with the next photographic image containing member of said second disc, control means for said electrically operated means, and means for generating control signals as said first disc rotates for intermittently activating said control means and for synchronizing the operation of said first and second rotating means whereby selected portions of the sound produced from said magnetic track are generated while selected respective images are projected to said displaying means.