Data storage and retrieval system for non-contiguous medical device operational data

A method for storing and retrieving non-contiguous device data, the method comprising:

• receiving, by a media server, messages from a device via a computer network, wherein the messages contain status information about the device;
• storing, by the media server, the status information from the received messages into a media file of a data store, wherein the media server stores status information from consecutive received messages contiguously, in time order, in the media file with time gaps caused by occasional gaps in connectivity of the computer network between the device and the media server;
• receiving, by the media server, a status request for status information stored in the media file, wherein the status request includes a status information time at which the requested status information was captured at the device;
• accessing, by the media server, a network connectivity log and calculating an index, relative to an end of the media file, wherein the network connectivity log includes (a) times at which the device connects to the computer network and (b) times at which the device disconnects from the computer network, and wherein the media server is configured to calculate the index by:
• (a) locating a connect-disconnect pair in the network connectivity log that includes the status information time, (b) calculating a first offset from the media file beginning to a media file segment beginning at the device connect time of the connect-disconnect pair, (c) calculating a second offset from the media file segment beginning to the status information time, and (d) combining the first offset and the second offset;
• requesting, by the media server, from the data store via a provisional request, a portion of the media file beginning at the calculated index;
• and
• providing, by the media server, in response to the status request, the portion of the media file beginning at the calculated index returned from the data store.

A non-transitory computer-readable medium encoded with instructions that, when executed by a processor, establish processes for performing a computer-implemented method for storing and retrieving non-contiguous device data, the processes comprising:

• a process configured to receive, by a media server, messages from a device via a computer network, wherein the messages contain status information about the device;
• a process configured to store, by the media server, the status information from the received messages into a media file of a data store, wherein the media server stores status information from consecutive received messages contiguously in time order, in the media file with time gaps caused by occasional gaps in connectivity of the computer network between the device and the media server;
• a process configured to receive, by the media server, a status request for status information stored in the media file, wherein the status request includes a status information time at which the requested status information was captured at the device;
• a process configured to access, by the media server, a network connectivity log and calculate an index, relative to an end of the media file, wherein the network connectivity log includes (a) times at which the device connects to the computer network and (b) times at which the device disconnects from the computer network, and wherein the media server is configured to calculate the index by:
• (a) locating a connect-disconnect pair in the network connectivity log that includes the status information time, (b) calculating a first offset from the media file beginning to a media file segment beginning at the device connect time of the connect-disconnect pair, (c) calculating a second offset from the media file segment beginning to the status information time, and (d) combining the first offset and the second offset;
• a process configured to request, by the media server, from the data store via a provisional request, a portion of the stored media file beginning at the calculated index;
• and
• a process configured to provide, by the media server, in response to the status request, the portion of the media file beginning at the calculated index returned from the data store.