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6. CURRENT PLAYER CONDITION REQUEST DESCRIPTIONS
6.1 P-Block Number Request
Function : The command returns information for the following groups:
DVD – Title Numbers, Chapter Numbers, Time
CD/VCD – Track Numbers, Index Numbers, Block Numbers, Time
Format : ?A
Explanation : If the P-Block Number Request command is sent to a DVD disc,
Title numbers, Chapter numbers and Time Code information are grouped
together then the data is returned in a single report. A request sent to a
CD/VCD disc returns Track numbers, Index numbers, Block numbers and
Time Codes.
If the player is in Random Access Mode, the report contains correct values.
NOTE:The Time Code shows the elapsed time based on the chapter when
playing DVD Video disc. And it shows the elapsed time based on the title
when playing DVD VR disc.
Execution :
String Status Return DVD player
?A<CR> 1201033545<CR>
Play mode (CD)
Track 12, Index 1, 3 minutes, 35
seconds 45 Blocks
?A<CR> 0135001247<CR>
Play mode (DVD)
Title 1, Chapter 35, 12 minutes,
47 seconds
6.2 Title/Track Number Request
Function : Returns the current Title/Track number
DVD : Title
CD/VCD : Track
Format : ?R
Explanation : The player returns the contents of the Title/Track Number
Register. The Track number is a 2-digit integer. Correct values show only
when the player is in Random Access Mode.
Execution :
String Status Return DVD player
Play mode (CD)
?R<CR> 12<CR>
Player plays Track 12