The invention relates to receiving, transmitting, and generating a manifest describing a plurality of versions of partitioned timed media data comprising timed samples that comprise subsamples. A transmitter amplifier 440 is provided between the antenna 110 and the transmitter circuit 145, and is configured to have an operational transmitter output impedance when the transceiver 400 is in a transmit mode and an isolation transmitter output impedance when the transceiver 400 is in a receive mode. The metallic layers are generally already present in the integrated circuit for signal routing. Non-confidential documents are mapped into the vector space to generate a document vector corresponding to each non-confidential document, wherein the generation of each document vector is based on a subset of the received term vectors. Opening the casings increases the sound collecting rate of the microphone during a phone call and prevents a top face of the operation unit from being rubbed or scratched by the other. Each blade passes through the inner shroud and is attached to it with sealing cement containing an organic polymer adhesive.