Authentication of distributed motion image data using data structures
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United States of America Patent
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Sep 27, 2016
Grant Date -
Feb 25, 2016
app pub date -
Nov 3, 2015
filing date -
May 27, 2008
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Abstract
A motion image distribution system includes a server and a user terminal. The server generates a feature quantity table CHT1 representing a data structure of motion image encoded data VDE, and authenticates the motion image encoded data VDE by using the generated feature quantity table CHT1. Then, the server transmits the motion image encoded data VDE and the feature quantity table CHT1 to the user terminal. The user terminal generates a feature quantity table CHT2 representing a data structure of the received motion image encoded data VDE, and authenticates received motion image encoded data VDE by using the generated feature quantity table CHT2. Then, the user terminal plays back the motion image encoded data VDE and outputs motion image playback information.
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