MULTISTAGE MODULE EXPANSION SYSTEM AND MULTISTAGE MODULE COMMUNICATION METHOD
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United States of America Patent
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Issued Date -
Jul 3, 2014
app pub date -
Feb 6, 2013
filing date -
Dec 28, 2012
priority date (Note) -
Abandoned
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Abstract
A multistage module expansion system and multistage module communication method, applicable to a set-top box, are introduced. The system includes a master module, at least a preceding expansion module, and at least a succeeding expansion module. The master module generates and sends a control instruction to the preceding expansion module and the succeeding expansion module. The preceding expansion module and the succeeding expansion module each determine whether the control instruction is of a type executable by the preceding expansion module and the succeeding expansion module, respectively. If the determination is affirmative, the preceding expansion module creates and sends a preceding data packet to the master module, and the succeeding expansion module creates and sends a succeeding data packet to the preceding expansion module, such that the preceding expansion module sends the succeeding data packet to the master module.
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