Method and apparatus for utilizing extended AV/C command frames including status inquiry, notify inquiry and control inquiry command types
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United States of America Patent
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Sep 13, 2005
Grant Date -
Apr 10, 2003
app pub date -
Oct 4, 2001
filing date -
Oct 4, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A modified AV/C command set includes status inquiry, notify inquiry and control inquiry commands. The status inquiry, notify inquiry and control inquiry commands include an opcode and any number of operands. Thus, the status inquiry, notify inquiry and control inquiry commands can include only an opcode. The status inquiry, notify inquiry and control inquiry commands are sent from a controller to a target device to determine if the target device supports a particular status, notify or control command, respectively. In response to a status inquiry, notify inquiry or control inquiry command, a target device sends a response to the controller notifying the controller as to whether or not the target device supports the particular command.
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