Record player for a stationary record disc
AssigneeSony Corporation
InventorsYoshihisa Mori, Norio Mashimo, Takeo Eguchi
Life of this patent
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Abstract
A record player for use with a stationary conventional record disc having a sprial sound groove with signals recorded therein includes a movable body which is placed on the record disc, a drive assembly for causing the movable body to travel over the record disc, a pick-up or cartridge pivotally mounted at the underside of the movable body for engaging the sound groove and reproducing the signals recorded therein while tracking the spiral sound groove as the movable body travels on the record disc, and an arrangement for controlling the travel on the movable body relative to the record disc in response to pivotal movement of the pick-up.
Claims14
A record player for use on a stationary record disc having a surface on which signals are recorded in a spiral sound groove comprising
- a freely movable body adapted to be steerably supported on said surface of the record disc for random movement in respect to the latter;
- drive means operatively associated with said randomly movable body for propelling said movable body relative to the record disc;
- sound pick-up means for engaging and tracking the spiral sound groove of said record disc and reproducing the signals recorded therein as said movable body is propelled;
- means mounting said sound pick-up means in respect to said movable body for movement in a plane substantially parallel to the plane of the surface of said record disc;
- and
- control means for steering said movable body and thereby controlling the direction of movement of said movable body on said record disc in response to movement of said sound pick-up means relative to said movable body while engaging and tracking the spiral groove on said record disc.
A record player for use with a stationary record disc having signals recorded in a spiral groove in a surface of the disc;
- said record player comprising
- a freely movable body adapted to be steerably supported on said surface of the record disc for random movement in respect to the latter;
- drive means for propelling said body over said record disc;
- pick-up means depending from said body for engaging and tracking said spiral groove and reproducing the signals recorded in the latter;
- means mounting said pick-up means for movement relative to said body in a plane parallel to said surface of the record disc;
- and
- control means responsive to said movement of said pick-up means relative to said body for steering said movable body and thereby controlling the direction of said random movement of said body over said disc and for varying the speed of said movement of the body over said disc.
Dependencies are inferred from the claim text.