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Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 5101154 | Open bond detector for an integrated circuit An open bond detection circuit is provided for verifying the continuity through a bonding wire connected between an external pin and a bonding pad of an integrated circuit by monitoring the potential developed across a metal conductor connected between th... | 03/31/1992 |
| 5097141 | Simple distance neuron An artificial neuron is provided using a simple distance calculation between the input signal vector and the synapse weight signals for providing an output signal. A difference signal is developed by subtracting a weight signal from an input signal. The d... | 03/17/1992 |
| 5079519 | Digital phase lock loop for a gate array A phase lock loop for use in gate array applications with fixed transistors geometries maintains a predetermined phase delay between an input signal and an output signal. The phase comparison cycle operates over multiple periods of the input signal for in... | 01/07/1992 |
| 5077491 | Low standby current comparator having a zero temperature coefficient with hysterisis A comparator circuit is provided compatible with CMOS logic levels for the input signal and including a substantially zero standby current when the input signal is initially less than the upper trip threshold. The trip threshold follows a bandgap voltage ... | 12/31/1991 |
| 5067095 | SPANN: Sequence processing artificial neural network An artificial neural network is provided using a modular, self-organizing approach wherein a separate neural field is contained within each module for recognition and synthesis of particular characteristics of respective input and output signals thereby a... | 11/19/1991 |
