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AssigneeHughes Aircraft Company
InventorsManfred W. Reissmueller, Rudolf F. Zurcher
Estimating the term…
A digital watch has a face mounted local pulse sensor unit which is coupled to infrared plethysmograph electronics within the watch. The local pulse sensor includes transmitter and receiver photodiodes connected to the electronics by a plurality of moveable contact fingers. A connector at one end of a flat cable is insertable into a slotted opening on the side of the local pulse sensor and between the contact fingers and the two local photodiodes to disconnect the photodiodes from the electronics. Simultaneously, a remote pulse sensor unit at the other end of the cable is electrically coupled to the contact fingers by the connector for enabling the wearer's pulse at his finger to be sensed. A loop about the connector end of the cable maintains the connector in position when inserted into the local pulse sensor receptacle. A cuff at the remote sensor end of the cable secures the sensor to a wearer's finger for pulse monitoring.
In an infrared plethysmograph having a remote pulse sensing feature having a mounting case, digital display pulse monitoring electronics mounted within said mounting case for computing and displaying a wearer's pulse rate, and a local pulse sensor unit in said mounting case and switchably coupled to said electronics, the improvement comprising a connector receptacle , means associated therewith disengageably coupling said local pulse sensor unit with said electronics, and a connector coupled to a remote pulse sensor unit and insertable within said receptacle and engageable with said means for disengaging said local pulse sensor unit from said electronics and for coupling said remote pulse sensor unit thereto.
Dependencies are inferred from the claim text.