Sensor with signature of data relating to sensor
First Claim
Patent Images
1. A pulse oximeter apparatus comprising:
- a pulse oximeter sensor having an output for providing a signal corresponding to a measured physiological characteristic; and
a memory associated with the sensor and located external to a monitor configured to receive the sensor signal, the memory containing data relating to the sensor and containing a digital signature.
3 Assignments
0 Petitions
Accused Products
Abstract
A sensor has codes useful for a monitor which can be authenticated as accurate. The sensor produces a signal corresponding to a measured physiological characteristic and provides codes which can be assured of being accurate and authentic when used by a monitor. A memory associated with the sensor stores both data relating to the sensor and a digital signature. The digital signature authenticates the quality of the code by ensuring it was generated by an entity having predetermined quality controls, and ensures the code is accurate.
50 Citations
20 Claims
-
1. A pulse oximeter apparatus comprising:
-
a pulse oximeter sensor having an output for providing a signal corresponding to a measured physiological characteristic; and a memory associated with the sensor and located external to a monitor configured to receive the sensor signal, the memory containing data relating to the sensor and containing a digital signature. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A method for creating a digital signature in a pulse oximeter apparatus including a memory associated with a pulse oximeter sensor having an output configured to provide a signal corresponding to a measured physiological characteristic, the method comprising:
-
signing at least a portion of data relating to the sensor to create a digital signature; storing the digital signature in the memory; and storing data relating to the sensor in the memory. - View Dependent Claims (7, 8, 9, 10)
-
-
11. A pulse oximeter sensor reader comprising:
-
a housing; a sensor input for receiving a signal from a pulse oximeter sensor corresponding to a measured physiological characteristic; a sensor processing circuit coupled to the sensor input; a memory input for receiving digital data stored in a memory associated with the sensor, the digital data including a digital signature; a first sensor reader memory coupled to the memory input for storing the digital data; a second sensor reader memory storing a signature verification key; a third sensor reader memory storing a program for verifying the digital signature of the digital data using the signature verification key; and a transfer circuit for providing at least a portion of the digital data to the sensor processing circuit. - View Dependent Claims (12, 13, 14, 15, 16)
-
-
17. A pulse oximeter system comprising:
-
(a) a pulse oximeter sensor apparatus comprising a sensor having an output configured to provide a signal corresponding to a measured physiological characteristic, and a sensor memory associated with the sensor, the sensor memory having digital data relating to the sensor and having a digital signature, the digital signature being a signature of at least a portion of the data; and (b) a pulse oximeter sensor reader comprising a sensor reader housing; a sensor input adapted to receive the signal from the sensor corresponding to the measured physiological characteristic; a sensor processing circuit coupled to the sensor input; a memory input adapted to receive the digital data from the sensor memory; a first sensor reader memory coupled to the memory input to store the digital data; a second sensor reader memory storing a signature verification key; and a third sensor reader memory storing a program adapted to verify the digital signature using the signature verification key. - View Dependent Claims (18)
-
-
19. A pulse oximeter apparatus comprising:
-
a sensor having an output configured to provide a sensor signal corresponding to a measured physiological characteristic; and an adapter coupled to the sensor, the adapter including a memory, the memory containing sensor data and containing a digital signature. - View Dependent Claims (20)
-
Specification