CXD1922Q Datasheet, PDF (1/4 Pages) Sony Corporation – MPEG-2 Video Encoder

MPEG-2 Video Encoder
CXD1922Q
Description
The CXD1922Q is a highly-integrated device includ-
ing MPEG-2 encoder, motion estimation, and system
and rate controller on a single chip. The device is ideal
for low-cost solutions in consumer products, storage
media, communications and authoring applications.
The CXD1922Q supports MPEG-2 MP@ML encoding
compliant with ISO/IEC 13818-2 for frame structure
encoding.
Features
MPEG-2 Encoding
• High quality, real-time encoding (I, B, P)
• Supports MP@ML, SP@ML
— Image size: up to NTSC 720x480 @ 30fps
up to PAL 720x576 @ 25fps
— Up to 2 “B-frame” (M ≤ 3)
— Frame structure
• Encoding rates:
— Max. bit-rates: 15Mbps (P, B)
25Mbps (I only)
• MPEG-2 Video Elementary Stream Output
— 4:2:0 chroma format encoding
Motion Estimation
• Adaptive motion estimation algorithms
• Wide motion vector search range:
— Horizontal:
–288 to +287.5
— Vertical:
–96 to +95.5
• Frame/field motion estimation
• Half-pel accuracy
• Dual-prime encoding support
208-Pin QFP (Plastic)
Encoding Controller (Closed)
• Programmable rate and system control
• Host independent operation
• CBR and VBR encoding support
• Constant length coding for storage media
• Adaptive frame/field MC/DCT coding
• Programmable parameters including:
— Bit rate
— GOP structure (M&N value)
— Encoding image size
— Quantization matrix tables, etc.
Interfaces
• Host: 16-bit controller
• Input video: 4:2:2 YUV CCIR 656 (8-bit parallel)
• Output video: 8-bit video elementary stream (8-bit
parallel)
• External memory: 32Mbits
— Supports SDRAM (e.g. 512K x 16 x 2-chips)
Other:
• Supports MPEG-1 encoding
• Multi-level temporal noise reduction
• Image conversion for free size encoding
• 4:2:2 to 4:2:0 video conversion
• Automatic scene change detection
• Automatic 3:2 pull-down inversion
• Error concealment I-frame motion vectors
• Support for user data insertion in encoded stream
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication
or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony
cannot assume responsibility for any problems arising out of the use of these circuits.
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