Blu-ray Player and Home Theater

Block Diagram

Design Considerations

High-definition video broadcasting and storage requires the use of Blu-ray, also known as Blu-ray Disc (BD) as next-generation optical disc format. While the principle of optical disc drives remain the same, the supported video and audio formats coming with the Blu-ray standard as well as next generation user-interfaces and memories requires some updates in the design.

On the video side MPEG-2, MPEG-4 AVC (H.264) and SMPTE VC-1 (based on WMV) are supported by the standard; HDMI output is a must for this generation of players. The mandatory audio standards LPCM, Dolby Digital (DD) and DTS Digital Surround plus several optional formats require up to 8 channels audio for home theater.

The core subsystem includes:

• DSP/ASSP – performs MPEG decoding, audio processing, controls system electronic, optical disc drive, and user interface. While many functions can be integrated there might be a need for discrete solutions on the audio and video side.
• Audio – provides audio output in different formats as well as allows the audio signal to be digitized by the audio converter and processed by a DSP to provide high-quality audio.
• Video – provides video output with different formats: NTSC/PAL, S-video, YPrPb component video and HDMI. The output stages require high-performance op-amps to amplify the video signal.
• Memory – stores executing code and data/parameters.
• User Interface – allows the user to control the player or home theater using the panel keypad, remote or touch screen control.
• Power Conversion – converts the input power from the AC adaptor to run various functional blocks.

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