Abstract: A frequency estimate of an incoming data input is generated and transmitted with network traffic to a receiver. At the receiver, the estimate is recovered, decoded, and is used to seed an algorithm for locking the data access rate of the receiver to the incoming data. Data is buffered in buffers at each end of the system, and data flow out of the buffers is managed depending upon data rate.

Abstract: A frequency estimate of an incoming data input is generated and transmitted with network traffic to a receiver. At the receiver, the estimate is recovered, decoded, and is used to seed an algorithm for locking the data access rate of the receiver to the incoming data. Data is buffered in buffers at each end of the system, and data flow out of the buffers is managed depending upon data rate.

Abstract: An imaging detector on a medical imager is provided with a proximity sensor for automatically maintaining a desired distance from the subject to be imaged. The proximity sensor is formed from three infrared beams at decreasing distances from the imaging detector. The imaging detector is moved toward the subject until the first two beams are interrupted. If the third beam is interrupted, the imaging detector is moved back from the subject until only the first beam is interrupted. Faults are detected by monitoring the order in which the beams are interrupted, whether the beams are interrupted when the imaging detector is fully retracted, and whether beams are present when no signal is applied to the beam emitters.