And so on measurement feature of position of stylus for linear velocity roll control feature of motor of player for linear velocity groove disk record and the like

摘要

(57) Abstract (Modified) Topic It is not the former constant angular velocity record board, and so on the linear velocityDevelopment of degree record board. Solutions And so on linear velocity groove disk record(And so on linear velocity record board) suitable electric resistance homogeneity derivedIt produces in electric Characteristic material te equal thickness Characteristic. That and the like linear velocity record boardIn stylus of pickup of player of business suitable electricityFlow flows. Linear velocity record board on that player and the likeIn median margin part, on extended belt of locus of that stylusWay it contacts suitable position, the reverse side of the cover of that playerAnd so on of making use, the electric contact is provided. That stylusWith to let flow suitable electric current between the electric contact, electricity at that timeFrom here at air value of resistance the tsu te, reko on that and the like linear velocity record boardTry to be able to display the position of the do needle electrically. As though it is aboveIt was constituted, and so on for the linear velocity groove disk recordreko for linear velocity roll control feature of motor of player and the likeMeasurement feature of position of do needle.