Patent ID: 7945441

Claim:
A portable electronic device that device that is arranged to manage time domain data with a quantized feature index trajectory methodology, the portable electronic device comprising: a feature quantizer block that is arranged to convert the time domain data into a stream of feature indexes; a buffer block that is arranged to store the time domain data and also store at least a portion of the stream of feature indexes as buffered feature indexes, wherein the buffered feature indexes are associated with the time domain data; a QFIT processing block that is arranged to process the buffered feature indexes and the time domain data by: associating each buffered feature index with a respective time index relative to the corresponding time domain data; linking each buffered feature index together in a feature trail such that each buffered feature index in the feature trail is linked to a preceding buffered feature index that has an earlier time index; and generating a feature vector that is associated with the time domain data and the feature trail; and updating indexes for searching and retrieval operations such that the feature vector operates as an index for the time domain data.