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US 10,360,938 B2Granted
Apparatus, methods, and systems for controlling tonearm tracking for a record turntable
OwnerKioan Cheon, AnKuk Songinventors
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Abstract
Apparatus, methods, and systems for use in providing tangential (linear) tracking of a stylus on a record during play. In some embodiments, a tonearm assembly includes a tonearm with a laser emission source mounted thereto, and a receiver for receiving a light beam from the laser emission source and for splitting the light beam, and a movement actuator for adjusting a position of the tonearm based on a differential in light intensity between different portions of the split beam.
Claims13
A turntable assembly for use in playing a record comprising:
- a tonearm having a rear pivot;
- a laser emission source attached to the tonearm;
- a sensor for sensing light generated by the laser emission source;
- a movement actuator configured to adjust a position of the rear pivot of the tonearm in at least a forward and rearward direction along a horizontal axis parallel to a face of a platter, as a function of light intensity sensed by the sensor.
1 more element
A tonearm assembly comprising:
- a tonearm having at least one rear pivot and at least one front pivot;
- a laser emission source attached to a front section of the tonearm;
- a receiver for receiving a laser beam from the laser emission source;
- a movable base attached to a rear portion of the tonearm;
- and
- a movement actuator attached to the moveable base, the movement actuator being configured to move as a function of position with which the laser beam from the laser emission source strikes a component of the receiver.
3 more elements
A turntable system for use in playing a record comprising:
- a platter;
- a tonearm, with a laser light source attached thereto;
- a beam splitter positioned to receive laser light emitted from the laser light source and for splitting the laser light emitted from the laser light source;
- a movement actuator coupled to the tonearm, wherein the movement actuator comprises an electromagnetic assembly configured to receive control signals as a function of light intensity;
- and
- a tonearm pivot, wherein the movement actuator is configured to adjust a position of the tonearm pivot laterally toward and away from the platter.
3 more elements
Dependencies are inferred from the claim text.