Thursday, September 13, 2007

LCD TV

LCD TV is a digital television system that displays digital video on an LCD (Liquid Crystal Display) and supports digital/analog video broadcasting (cable, satellite, terrestrial), broadband connection, personal video recording (PVR), interactive internet, and wireless connectivity

Core Subsystem include:

DSP - performs MPEG encoder/decoder, video, voice/AC3/MPEG audio processing.

RF Demodulation - performs COFDM/QAM/QPSK demodulation, Forward Error Correction (FEC) and video mux.

MCU - controls system electronic, network, and user interface.

Memory - stores executing code and data/parameters.

Video Interface - selects video source to be decoded/encoded by ADC/DAC and DSP.

Audio Interface - allows audio to be digitized by the audio codec and processed by DSP to provide high-quality audio for MPEG/AC3 requirements.

LCD Interface - parallel digital video is converted into serial data for transmitting to the TFT (Thin Film Transistor) controller via the LVDS (Low-Voltage Differential Signaling) transmitters and receivers.

The LCD display is controlled by the CCFL (Cold-Cathode Fluorescent Lamp) backlight and the TFT gate/source drivers.

Power Conversion - converts the input power from the AC adaptor to run various functional blocks.

http://focus.ti.com/vf/docs/blockdiagram.tsp?blockDiagramId=6010&family=vf

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