Fujitsu stylistic lt, Reference Manual

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1-2 Stylistic LT Features
Zoomed Video Support 1
The Zoomed Video (ZV) Port Standard is an adaptation of the PC Card Standard that defines a
high-speed multimedia (video and audio) bus between a PC Card controller and other system
components. Upon insertion of a Zoomed Video card, the PC Card controller reconfigures the PC Card
socket to form the ZV bus.
In the Stylistic LT pen tablet, the ZV bus connects the system’s PC Card socket to the system’s audio and
video controllers as shown in Figure 1-1. This allows a Zoomed Video card to send large amounts of
video and audio data directly to the video frame buffer and audio controller. Since this all takes place
over the ZV bus, the CPU and system bus do not need to process or carry video and audio data and are
therefore, free to perform other tasks. The end result is that the system can play back full-screen,
full-motion video and audio in real time while the system performs other tasks.
Figure 1-1 Zoomed Video Port
Note: Figure 1-1 is intended to illustrate the concept of the ZV bus. This figure does not depict a complete
system block diagram. Individual system buses, such as the ISA and PCI buses are not called out.
In the case of Zoomed Video playback, MPEG compressed data is transferred from the hard disk to the
Zoomed Video card (via the system bus and the PC Card controller). The MPEG data is then
decompressed by the PC Card and sent to the display and audio controller via the ZV bus.
ZV Bus
CPU
IDE
ZV Port
PC Card
Video
Display
Controller
Controller
Audio
Controller
Screen
PC Card
Audio
w/ ZV Port
w/ ZV Port
HDD
Out
PC Card
Socket
SYSTEM BUS