Philips 42PFL9664H/12 - 7.8 Ambi Light

Circuit Descriptions
EN 50 Q549.6E LA7.
2009-May-29
7.6 Common Interface CI+
Together with this platform, an extention to the Common
Interface (CI) Conditional Access system is added, called CI+.
CI+ or Common Interface Plus is a specification that extends
the Common Interface (DVB-CI) as described in the digital
broadcasting standard DVB.
The weakness of the conventional CI module as Conditional
Access system was the absence of a Copy Protection
mechanism, as decrypted content could be sent over the
PCMCIA interface unscrambled. With the CI+ extension, a
form of copy protection is established between the Conditional
Access Module (CAM) and the Integrated Digital Television
(IDTV). The security mechanisms in CI+ are derived/copied
from POD (with the exception of Out Of Band (OOB) used in
US CA systems). For more information about conventional CA
systems using a CI module, refer to the BJ3.0E L/PA or BL2.xU
Service Manual.
The CI+ standard is downwards compatible with the existing CI
standard.
The following figure shows the implementation of the CI+
Conditional Access system in the TV543 platform.
Figure 7-11 CI+ Conditional Access implementation
7.7 Net TV
In this chassis, a feature that enables access to dedicated
internet pages from a limited group of information suppliers,
called “Net TV”, is introduced. A separate Wi-Fi module
enables wireless communication with a local network.
7.8 Ambi Light
The Ambi Light architecture in this platform has been entirely
renewed. The characteristics are:
• Additional DC/DC board generating 12/16/24 V (optional)
• ARM processor (on DC/DC panel or AL board)
• Low-power LEDs
• SPI interface from ARM to LED drivers
•I
2
C upgradeable via USB
• Each AL module has a temperature sensor.
The use of the DC/DC board is optional. In case no DC/DC
board is implemented, the ARM processor is located on one of
the AL boards.
Refer to Figure 7-12
for the Ambi Light architecture.
CAM
PNX8543
TS-INPUT
Transport Streams
CA-Control
CA-MDI
CA-MDO CA-CTRL PCI/XIO
Proprietary CA
scrambling
CI + Standardised CCS
scrambling
DES/AES
descrambler
MHEG MMI
application
Matrix
Matrix
tuner
channel
decoder
DES/AES
scrambler
CA client
MHEG CI+
decoder
demux
(SC)
Command
interface
Transport stream
interface
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