Guntermann & Drunck DVIVision-USB 2.0 - Handbuch (Seite 45)

Further information
G&D DVIVision-USB 2.0 · 16
DDC transmission with cache function
The DVIVision-USB 2.0 system supports Enhanced-DDC (Enhanced Display Data
Channel) to read out the data from the monitor, which is connected to the computer
module (DVIVision-CON) and to transmit them to the computer. This data includes
information regarding the preferred resolution and the supported monitor frequen-
cies.
A cache function is integrated in the system. This way the computer, which is con-
nected to the computer module (DVIVision-USB 2.0-CPU) already has access to the
actual capabilities of the remote monitor during the boot process. Even if the com-
puter module or the user module are turned off or if the devices are not intercon-
nected, the properties of the most recently connected monitor or a default data block
are provided in the DVIVision-USB 2.0 system.
The DDC information of the monitor are basically transmitted one-to-one. In case
the DVIVision-USB 2.0 system determines that the display cannot be read without
errors or that the entries are invalid, the information are completed or corrected.