Abstract: Described is a portable recorder for use by first-response emergency service personnel while providing care to a human subject. The recorder includes memory for storing data and sensor circuitry for sensing physiological signals through electrodes attached to a human subject and for converting the physiological signals into electrical signals. The recorder also has a transducer for converting sound waves into electrical signals and analog-to-digital converter circuitry for converting the electrical signals corresponding to the physiological signals and the electrical signals corresponding to the sound waves into digital data. A processing unit stores the digital data corresponding to the sound waves and the digital data corresponding to the physiological signals in the memory. The data stored in the memory are transferred to a remote computing system. An application program on that computing system automatically generates a report based on the data transferred from the memory.

Abstract: A meter (10) for measuring extremely-low-frequency radiation includes a coil circuit (22) whose output is filtered by a sharp-cut-off high-pass filter (24) to pass standard house-current frequencies but suppress the frequency components that would predominate as a result of movement of the meter with respect to the earth's magnetic field. An integrator (26) compensates for the frequency response of the coil circuit (22), an RMS circuit (35) converts the signal to its root-mean-square value, and a display circuit (28) provides a display determined by the resultant signal.

Abstract: An ultra-thin streaming tape cassette transport has its magnetic read/write head assembly mounted on a rigid transverse beam. The front wall of the transport through which a cassette is loaded is fixedly spaced in front of that beam and tracks exist between the front wall and the transverse beam for guiding the cassette to locating surfaces on that beam so that the cassette is positioned precisely vertically relative to the head assembly. A base plate which supports the drive spindles and cassette locating pins is hingedly mounted relative to the transverse beam and front wall so that it is movable between a position wherein the spindles and locating pins intercept the plane defined by the tracks to precisely position the cassette in the other two directions relative to the head assembly and a loading position wherein the spindles and pins are disposed below that plane permitting the cassette to be inserted into and withdrawn from the transport.

Abstract: In a magnetic tape cassette, the cassette housing is divided between the two roll cores by an elongated isolator extending from the working edge of the cassette to the opposite edge thereof to prevent tape loops formed in the housing adjacent one roll core due to a slack tape condition from propagating to the other core where they could become snagged by tape winding onto that other core thereby causing a tape jam or break. One end of the isolator is pivotally mounted to the housing so that the isolator can swing freely between the two roll cores as the amount of tape wound on the two cores varies and, during operation of the cassette, the isolator does not exert any appreciable drag on the rotating tape rolls.