Abstract: A device and method for measuring the concentration of analytes in the blood of a portion of tissue. The device includes a sensor module, a monitor, and a processor (separate from or integral with the sensor module). The sensor module includes a radiation source for emitting radiation to the tissue; a collimator and narrow band filter for processing the radiation after it has transmitted through or been reflected by the tissue; and one or more sensors for sensing the transmitted or reflected radiation. The one or more sensors send a signal to the processor which algorithmically converts the radiation using linear regression or orthogonal functions to determine the concentration of one or more blood analytes. The device self-calibrates to eliminate error caused by variables such as skin character.

Abstract: A device and method for measuring the concentration of analytes in the blood of a portion of tissue. The device includes a sensor module, a monitor, and a processor (separate from or integral with the sensor module). The sensor module includes a radiation source for emitting radiation to the tissue; a collimator and narrow band filter for processing the radiation after it has transmitted through or been reflected by the tissue; and one or more sensors for sensing the transmitted or reflected radiation. The one or more sensors send a signal to the processor which algorithmically converts the radiation using linear regression or orthogonal functions to determine the concentration of one or more blood analytes. The device self-calibrates to eliminate error caused by variables such as skin character.

Abstract: A magnetic data storage system includes a storage medium wherein bits of data are stored by perpendicular recording with a density sufficiently high to provide for the simultaneous presence of more than one data bit beneath the magnetic sensing element of a read head. A relative motion is imparted between the head and the medium during playback of data, and the sensed magnetic field changes produce sensor signals. The sensor signals are delayed by one or more delay elements providing delay times which differ from each other by one increment of delay, such delay increment being equal to the amount of time elapsed by a stored data bit passing a point on the pole piece of the read head. By summing together the respective delayed signals, cancellation of the spurious response is obtained so that the stored data can be retrieved.