US PATENT SUBCLASS 369 / 184
.~.~ Tone arm position control by sensing of disc (e.g., disc or hole size)

Current as of: June, 1999
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369 /   HD   DYNAMIC INFORMATION STORAGE OR RETRIEVAL

176  DF  DYNAMIC MECHANISM SUBSYSTEM {8}
178  DF  .~ Access of multiple storage elements (e.g., record changer) {14}
184.~.~ Tone arm position control by sensing of disc (e.g., disc or hole size) {4}
185  DF  .~.~.~> Disc size sensor on or using tone arm
186  DF  .~.~.~> Stepped tone arm stop element
187  DF  .~.~.~> Disc size sensor in feed path
188  DF  .~.~.~> Disc size sensor at turntable position

DEFINITION

Classification: 369/184

Tone arm position control by sensing of disc (e.g., disc or hole size):

(under subclass 178) Subject matter including moving a tone arm away from the path of storage disc movement during disc changing and moving the tone arm to the starting position on the disc to be placed in use after changing in accordance with a sensed dimension indicative of the starting position.

(1) Note. Such dimension may be the diameter of the disc or of a spindle aperture therein.

SEE OR SEARCH THIS CLASS, SUBCLASS:

217, for tone arm set down control responsive to disc sensing, in general.