US PATENT SUBCLASS 250 / 206.1
.~.~ Having means to generate positional information in at least one plane of a target moving relative to one or more photodetectors

Current as of: June, 1999
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250 /   HD   RADIANT ENERGY

200  DF  PHOTOCELLS; CIRCUITS AND APPARATUS {11}
206  DF  .~ Photocell controlled circuit {9}
206.1.~.~ Having means to generate positional information in at least one plane of a target moving relative to one or more photodetectors {1}
206.2  DF  .~.~.~> Detection of positional information in two or more planes (e.g., azimuth and elevation; hour angle and declination) {1}

DEFINITION

Classification: 250/206.1

(under subclass 206) Having means to generate positional information in at least one plane of a target moving relative to one or more photodetectors: Subject matter in which photodetecting means generate signals proportional to the position in at least one plane of a target moving relative to the photodetecting means.

(1) Note. In order to be classified in this and indented subclasses, the electrical or electromechanical system should be significant. It is significant if it is recited in the claims more specifically than by name only, or if it is disclosed as being nonconventional.

(2) Note. Subject matter in this subclass is differentiated from that in subclasses 203+ because in those subclasses, photocell output signals are used to control the pre-photocell optical system whereas in this subclass, no control of the pre-photocell optical system occurs or, if it does, is not claimed.

(3) Note. If a means for indicating the positional information is claimed, then classification is in Class 356, subclasses 139.04 through 139.08, 141.1 through 141.5 and 152.1 through 152.3.

(4) Note. The subject matter in this and indented subclasses is differentiated from that in subclasses 231.4+, in that, the latter subclasses deal with rotating shafts which are not considered to be moving targets since their location in global space is fixed even though they are rotating on an axis. Targets, on the other hand, are changing their global position regardless of whether they are spinning about an axis.