Time-shifting for push to talk voice communication systems
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United States of America Patent
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Mar 19, 2013
Grant Date -
Oct 15, 2009
app pub date -
Dec 16, 2008
filing date -
Apr 11, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A network communication device located on a Push To Talk (PTT) communication network and configured to provide time-shifting capabilities to a user of a PTT communication device. The network communication device includes a receiver configured to progressively receive time-based media. The network communication device also includes a time-shifting buffer for progressively storing the received time based media as the time-based media is received and a time-shifting buffer controller configured to control the rendering of the time-based media at the PTT device. In response to a control signal received from the PTT device of the user, the time-based media is rendered at the PTT communication device either (i) in a near real-time mode as the time-based media is progressively received at the network communication device and progressively transmitted to the PTT device or (ii) at an arbitrary later time after the storage of the time-based media in the time-shifting buffer by retrieving the time-based media from the time-shifting buffer at the arbitrary later time and transmitting the retrieved time-based media to the PTT communication device.
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