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3.3 Command and Status
The computer transmits a command to the DVD-V7200 and the player responds
with the message, ‘execution complete’.
Example
COMPUTER DVD-V7200
(1) “Search to Frame 1000” ⇒⇒ (2) Search Execution
⇐⇐ (3) Complete
(4) “Play to Frame 2000” ⇒⇒ (5) Play Execution
⇐⇐ (6) Complete
NOTE: The length of a command string is limited to 32 characters. Please refer to
COMMAND STRUCTURE.
When using a computer to control the DVD-V7200 player, follow the command
protocols listed below:
• ASCII character codes are used for the actual commands and status response
• Command mnemonic is expressed as two (2) ASCII characters
• Uppercase letters are recommended; however, usually there are no
distinctions between the use of uppercase or lowercase letters
• Some commands require an argument, (e.g. chapter number or speed)
• Use a command as the terminator of the argument
The player executes a command as soon as the carriage return <CR> is received.
The <CR> acts as the command line terminator.
Example
CH<CR> : Set chapter for address mode
10SE<CR> : Search to chapter 10
The player has a command buffer, which stores a command string of up to 32
characters in length.
Example
10SE 20PL<CR> : Search to chapter 10 then play to 20
The command string enters into the buffer with the left character and continues
sequentially from left to right. When the <CR> is entered, the commands are
executed sequentially beginning with the first command in the buffer. In the
example above, the first command is 10SE.
NOTE: The player ignores codes in the command string such as <SPACE> or <LF>
(line feed) which do not affect the player’s operation.