Simultaneous personal sensing and data storage
A personal sensing device that may be used for storing personal data and sensed data arbitrates and prioritizes competing requests for memory access from sensing, wireless, and wired interfaces. The personal sensing device enables power efficiency with burst-writes to the memory at higher data rates then an incoming sensor data stream without risk of data loss. Sensing operations coordinated by reconfigurable control logic are partitioned from storage operations coordinated by a multi-port memory controller. The interface between the functional partitioning uses message passing, status/control registers and buffering to reduce or eliminate system interdependencies.
1. An apparatus comprising:
a data acquisition subsystem to process a real-time data stream received from a sensor; and
a multi-port memory controller including an arbitration module, the multi-port memory controller to allow concurrent access to a memory by at least two ports, at least one of the ports to store real time data processed by the data acquisition subsystem in the memory, a dynamically configurable priority allocated to each of the ports for prioritizing access to the memory to minimize loss of the real-time data received from the data acquisition subsystem, the priority dependent on a state of the arbitration module, the state configurable remotely from a system accessible through a network communications port.
2. The apparatus of claim 1 , wherein at least one of the ports to transfer data over a communications network.
3. The apparatus of claim 2 , wherein the communications network is wireless.
4. The apparatus of claim 2 , wherein the communications network is wired.
5. The apparatus of claim 1 , wherein the memory has a partition for storing user data.
6. The apparatus of claim 5 , wherein the user data is personal medical data.
7. The apparatus of claim 1 , wherein the real time data is behavioral monitoring data.
8. The apparatus of claim 1 , wherein the real time data includes physiological measures.
9. The apparatus of claim 1 , wherein the real time data includes environmental measures.
10. The apparatus of claim 1 , wherein the state of the arbitration module is configured remotely based on a command received via the network communications port.
11. A method comprising:
processing a real time data stream received from a sensor by a data acquisition subsystem; and
prioritizing requests to store the acquired real time data in a memory to allow concurrent access to the memory by at least two ports in a multi-port memory controller, the multi-port memory controller including an arbitration module, a dynamically configurable priority allocated to each of the ports for prioritizing access to the memory to minimize loss of the acquired real-time data received from the data acquisition subsystem, the priority dependent on a state of the arbitration module, the state configurable remotely from a system accessible through a network communications port.
12. The method of claim 11 , wherein at least one of the ports to transfer data over a communications network.
13. The method of claim 12 , wherein the communications network is wireless.
14. The method of claim 12 , wherein the communications network is wired.
15. The method of claim 11 , wherein the memory has a partition for storing user data.
16. The method of claim 15 , wherein the user data is personal medical data.
17. The method of claim 11 , wherein the real time data is behavioral monitoring data.
18. The method of claim 11 , wherein the real time data includes physiological measures.
19. The method of claim 11 , wherein the real time data includes environmental measures.
20. The method of claim 11 , wherein the state of the arbitration module is configured remotely based on a command received via the network communications port.