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LC7.1E - Super TV Servis M+S

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EN 74<br />

9.<br />

<strong>LC7.1E</strong> PA<br />

Circuit Descriptions, Abbreviation List, and IC Data Sheets<br />

9.8 HDMI<br />

9.9 Abbreviation List<br />

9.8.1 Introduction<br />

Note: Text below is an excerpt from the ”HDMI Specification”<br />

that is issued by the HDMI founders (see http://www.hdmi.org).<br />

The High-Definition Multimedia Interface is developed for<br />

transmitting digital signals from audiovisual sources to<br />

television sets, projectors and other video displays.<br />

HDMI can carry high quality multi-channel audio data and can<br />

carry all standard and high-definition consumer electronics<br />

video formats. Content protection technology is available.<br />

HDMI can also carry control and status information in both<br />

directions.<br />

HDMI is backward compatible with DVI (1.0). Compared with<br />

DVI, HDMI offers extra:<br />

• YUV 4:4:4 (3 x 8-bit) or 4:2:2 (up to 2 x 12-bit), where DVI<br />

offers only RGB 4:4:4 (3 x 8 bit).<br />

• Digital audio in CD quality (16-bit, 32/44.1/48 kHz), higher<br />

quality available (8 channels, 192 kHz).<br />

• Remote control via CEC bus (Consumer Electronics<br />

Control): allows user to control all HDMI devices with the<br />

<strong>TV</strong>'s remote control and menus.<br />

• Smaller connector (SCART successor).<br />

• Less cables: e.g. from 10 audio/9 video cables to 3 HDMI<br />

cables.<br />

9.8.2 Implementation<br />

The IC used is the Sil 9025 (Silicon Image) third generation<br />

HDMI receiver (item 7817 on the SSB) with following features:<br />

• Dual HDMI input connector.<br />

• Two EEPROMS to support EDID.<br />

• HDMI audio.<br />

• I 2 S output to DACs which operating freq. of 32 to 192 kHz.<br />

• Integrated HDCP decryption engine.<br />

• Built-in pre-programmed HDCP keys for copy protection.<br />

• Colour space conversion RGB to YCbCr.<br />

• “Hot Plug Reset” signal.<br />

HDMI 1<br />

HDMI 2<br />

EDID<br />

EDID<br />

COMP_AUDIO LR<br />

for DVI audio input<br />

only<br />

(Port 1)<br />

Hot plug<br />

Reset<br />

HDMI<br />

Receiver<br />

Sil9025<br />

(Port 2)<br />

DDC Reset<br />

24 bits YCbCr 4:4:4<br />

H and V Sync<br />

I2S DAC<br />

Figure 9-10 HDMI implementation<br />

Trident<br />

CX32<br />

HDMI connectors 1 and 2 are connected to resp. ports 1 and 2<br />

of the HDMI receiver. The ports cannot be activated at the<br />

same moment. Switching is controlled by software.<br />

“Hot Plug Reset” and “DDC Reset” are controlled by the<br />

microprocessor.<br />

I2S<br />

HDMI_HOTPLUG_RESET<br />

DDC_RESET<br />

Data Enable<br />

HDMI CLK<br />

HDMI_Audio LR<br />

Microprocessor<br />

Audio Processor<br />

Micronas MSP4450P<br />

The HDMI receiver will convert all RGB or YCbCr 4:2:2 signals<br />

to 24-bit YCbCr 4:4:4. When it receives a YCbCr 4:4:4 signal it<br />

will just pass the signal directly to the Trident Video Processor.<br />

RST<br />

I 2 C<br />

G_16860_078.eps<br />

010207<br />

1080i<br />

1080 visible lines, interlaced<br />

1080p<br />

1080 visible lines, progressive scan<br />

2CS<br />

2 Carrier Sound<br />

2DNR<br />

Spatial (2D) Noise Reduction<br />

3DNR<br />

Temporal (3D) Noise Reduction<br />

480i<br />

480 visible lines, interlaced<br />

480p<br />

480 visible lines, progressive scan<br />

AARA<br />

Automatic Aspect Ratio Adaptation:<br />

algorithm that adapts aspect ratio to<br />

remove horizontal black bars; keeping<br />

up the original aspect ratio<br />

ACI<br />

Automatic Channel Installation:<br />

algorithm that installs <strong>TV</strong> channels<br />

directly from a cable network by<br />

means of a predefined TXT page<br />

ADC<br />

analogue to Digital Converter<br />

AFC<br />

Automatic Frequency Control: control<br />

signal used to tune to the correct<br />

frequency<br />

AGC<br />

Automatic Gain Control: algorithm that<br />

controls the video input of the feature<br />

box<br />

AM<br />

Amplitude Modulation<br />

AUO<br />

Acer Unipack Optronics<br />

AP<br />

Asia Pacific<br />

AR Aspect Ratio: 4 by 3 or 16 by 9<br />

ASD<br />

Automatic Standard Detection<br />

AV<br />

Audio Video<br />

B/G<br />

Monochrome <strong>TV</strong> system. Sound<br />

carrier distance is 5.5 MHz<br />

BTSC<br />

Broadcast Television System<br />

Committee<br />

CAM<br />

Conditional Access Module<br />

CBA<br />

Circuit Board Assembly (or PWB)<br />

CEC<br />

Consumer Electronics Control bus;<br />

remote control bus on HDMI<br />

connections<br />

CI<br />

Common Interface; E.g PCMCIA slot<br />

for a CAM in a set top box<br />

CL<br />

Constant Level: audio output to<br />

connect with an external amplifier<br />

CLUT<br />

Colour Look Up Table<br />

ComPair<br />

Computer aided rePair<br />

COFDM<br />

Coded Orthogonal Frequency Division<br />

Multiplexing; A multiplexing technique<br />

that distributes the data to be<br />

transmitted over many carriers<br />

CSM<br />

Customer Service Mode<br />

CVBS<br />

Composite Video Blanking and<br />

Synchronisation<br />

CVBS-MON<br />

CVBS monitor signal<br />

CVBS-TER-OUT CVBS terrestrial out<br />

CVI<br />

Component Video Input<br />

DAC<br />

Digital to analogue Converter<br />

DBE<br />

Dynamic Bass Enhancement: extra<br />

low frequency amplification<br />

DDC<br />

Display Data Channel; is a part of the<br />

"Plug and Play" feature<br />

DFU<br />

Directions For Use: owner's manual<br />

DNR<br />

Dynamic Noise Reduction<br />

DRAM<br />

Dynamic RAM<br />

DSP<br />

Digital Signal Processing<br />

DST<br />

Dealer Service Tool: special<br />

(European) remote control designed<br />

for service technicians<br />

DTS<br />

Digital Theatre Sound<br />

DVB(T)<br />

Digital Video Broadcast; An MPEG2<br />

based standard for transmitting digital<br />

audio and video. T= Terrestrial<br />

DVD<br />

Digital Versatile Disc<br />

DVI<br />

Digital Visual Interface<br />

DW<br />

Double Window

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