Abstract: An optical identification record system is provided that combines physical record with digital music. The optical identification record system includes a record and a record player. The surface of the record is printed with optical identification codes. The record player includes a turntable, a first motor, a tone arm, a processor, a memory, and a second motor. The turntable of the record player is used to rotate the record. The tone arm includes a cartridge that reads the optical identification codes on the surface of the record to decode a corresponding audio file for playing.

Abstract: A disk drive having a disk stack and a movable actuator movable between position limits for moving one or more transducers between inner and outer radial limits with respect to the disk stack, established by a crash stop structure having at least one crash stop arm or projection for engaging the movable actuator and limiting actuator travel. The crash stop projection is stiff in the direction of actuator impact forces and is also displaceable from crash stop position in a direction different from the direction or impact forces, but biased to crash stop position, to permit forcible displacement of the crash stop projection in the different direction so that the actuator may be moved therepast during actuator installation or removal when assembling or disassembling the disk drive.

Abstract: An auto return record player is provided which can be simply and economically adapted to function as an automatic set down player. Either the auto return player or the automatic set down player is capable of playing a record on the turntable twice and then returning the tone arm to the rest post and shutting the machine off, the tone arm being automatically set down on the lead-in groove of the record between the first and second playing cycles. The record player is of the so-called quarter panel sub base type and may be assembled in a main base or cabinet without removing the turntable from the quarter panel sub base. The record player also has a 45 rpm record adaptor which is provided with an integral stub centering spindle portion for small hole records which may be grasped to lift the adaptor to a 45 rpm large hole record playing position, the adaptor covering a separate inexpensive stub shaft which acts as a bearing for the turntable.

Abstract: An extremely simple record changer mechanism is provided wherein only two members interconnect the tone arm subassembly with the main cycling gear in the spindle area of the changer. One of these members is employed to lift and lower the tone arm and the other member is used for the dual purpose of moving the tone arm horizontally during the record changing cycle and also acts as a velocity trip actuating member during the playing cycle. Both members are designed to avoid damage to the mechanism if the tone arm is moved or restrained during the record changing cycle.