Abstract: A programmable phonograph record changer which provides automatic sound track selection for each of a plurality of records played sequentially by the record changer. The record changer includes an electro-optic scanner mounted on the pickup arm for sensing the land areas located between the various sound tracks of a disc-type record. An auxiliary tone arm lift and sweep mechanism is controlled by a digital logic system connected to the electro-optic scanner to drive the tone arm across various bands which the user does not want to be reproduced. The logic system includes a programmable memory which stores the preselected sound tracks of a sequence of records which the user intends to be reproduced.

Abstract: A programmable phonograph record changer which provides automatic sound track selection for each of a plurality of records played sequentially by the record changer. The record changer includes an electro-optic scanner mounted on the pickup arm for sensing the land areas located between the various sound tracks of a disc-type record. An auxiliary tone arm lift and sweep mechanism is controlled by a digital logic system connected to the electro-optic scanner to drive the tone arm across various bands which the user does not want to be reproduced. The logic system includes a programmable memory which stores the preselected sound tracks of a sequence of records which the user intends to be reproduced. A land sensing circuit includes a means for developing a threshold signal which varies with the record surface reflectivity characteristics.

Abstract: A simulated volley ball game apparatus including a central standard about which a ball is connected for universal movement by a tethering arm. A net is provided to define a pair of opposed playing areas and three ball impellers are disposed on each side of the net and spaced therefrom generally the length of the tethering arm. The ball impellers are manually actuatable so that the players may attempt to contact the ball as in the game of volley ball to pass it to another of his teammates or across the net to opposing ball impellers. The standard has a plurality of detents spaced radially about the top thereof in alignment with the six ball impellers to guide the tethering means and thus the ball in the direction of one of the impellers.