AT2043 Multi-channel MPEG
AT2043
Multi-channel MPEG-4 Encoder
The AT2043 is a multi-channel audio/video encoder chip with MPEG-4 advanced simple
profile@level 5 that provides a highly integrated video compression solution in digital video
recording systems, video editing systems, network camera, and etc. It also supports various
video compression standards such as JPEG, MPEG-1, MPEG-2 and H.263.
Specifications/Features
Multi-standards video encoding
MPEG-4 advanced simple profile@level 5
MPEG-2 main profile@main level
MPEG-1
ITU-T Rec. H.263
JPEG Baseline
Multi-channel video encoding
Encoding of time-division multiplexed video data
up to 16 channels
Encoding each video channel in different
resolution and frame rate
Multi-channel encoding spatially sub-divided
image
Encoding each video channel in different video
standard
Support various spatial resolutions and frame rates
Up to 720×480(576) pixels@30(25)frames/sec
Up to 720×240(288) pixels@60(50)fields/sec
Up to 360×240(288) pixels@120(100)frames/sec
Up to 176×120(144) piexels@480(400)fields/sec
Pre-processing in encoding part
High performance horizontal scaler : 9:8, 2:1, 9:4
horizontal scaler (640, 360, 320)
High performance vertical 2:1 scaler
Chroma format conversion filter (4:2:0 format)
Optional noise reduction filter (LPF, Median, etc.)
Video encoding features
Adaptive field/frame prediction
4MV motion estimation
Unrestricted motion estimation
Direct coding mode
Variable group of VOP
Adaptive field/frame DCT
Resync marker
CBR/VBR encoding mode
Audio/speech encoding
Multi-channels speech encoding
Single channel audio encoding
(MPEG-1 Layer II Audio)
Commercial audio codec interface
Multiplex
MPEG-1 system stream (ISO/IEC 11172-1)
MPEG-2 PES/PS/TS (ISO/IEC 13818-1)
AVI, ASF, MP4 file formats
Internal water-marker embedding function for
authentication purpose
Embedded ARM946E core for control processor
Glue-less CPU interface
Motorola-type CPU interface
Intel-type CPU interface
Strong ARM interface
PCI local interface
General purposed I/Os
Special Features
Proprietary motion detection (area & sensitivity
control)
Multi-channel encoding by frame memory extension
2-way coding for dual-stream generation
Technology
1.8V power supply and 3.3V I/O
208 LQFP Package
Applications
Digital Video Surveillance Systems
Video Transmission Server Systems
Network Cameras
Digital Camcorders
Personal Video Recorders
Distance Learning Systems
Video Editing Systems
Chipset & Solution Provider for the Security World
AT2043
Multi-channel MPEG-4 Encoder
Functional Block Diagram
Video
Video
Input
Input
Interface
Interface
Digital
Video
Motion
Motion
Estimation
Estimation
/Prediction
/Prediction
DCT/Q
DCT/Q
IQ/IDCT
IQ/IDCT
VLC
VLC
System
System
Multiplex
Multiplex
RISC
RISC Core
Core
(ARM946E)
(ARM946E)
SDRAM
SDRAM
Controller
Controller
Speech/Audio
Speech/Audio
Encoder
Encoder
Host
Host
I/F
I/F
Frame Memory I/F
Digital
Audio
Host
Data
Descriptions
The AT2043 is a real-time MPEG-4 encoder chip that complies with MPEG-4 advanced simple profile@level 5. It also
supports various compression standards such as MPEG-2, MPEG-1, H.263, JPEG, and etc. It specifically has essential
features for DVR(Digital Video Recorder) supporting simultaneous encoding of time-division multiplexed video up to
16 channels. It enables simultaneous encoding of full D1 screen at 30(25) frames per second, CIF at 120(100) frames
per second (or fields per second) and QCIF at 480(400) frames per second. It also includes various pre-processing and
scaler functions for low resolution encoding and higher compression ratio. And it enables users to insert "Watermark" in
the video file during the encoding for authentication in the security field. The AT2043 provides ADPCM speech
encoding up to 16 channels or single channel MPEG-1 layer-II audio encoding.
It carries special features such as motion detection and multi-channel encoding, which are very essential functions for
DVR systems. The proprietary motion detection algorithm is adopted for high performance in low-illuminated
environment. The users can set up the motion detection area and control the detection sensitivity. The multi-channel
encoding function supports compression of multiple video sources up to 16 channels; the function can be simply
implemented by adding more frame memories according to the number of video sources.
System Application
Cam 1
Video
Video
Decoder
Decoder
Cam 2
Video
Video
Decoder
Decoder
MultiQuad
/Ⅲ
MultiQuad Ⅱ
Ⅱ/Ⅲ
Cam 3
Video
Video
Decoder
Decoder
AT4012E
AT4012E
(AT4013E)
(AT4013E)
AT2043
AT2043
Multi
Multi-channel
Multi-channel
4(9)
4(9) Channel
Channel
Display
Display // Multiplexer
Multiplexer
Cam N
PCI
PCI
I/F
I/F
MPEG
MPEG-4 Encoder
MPEG-4
Encoder
Video
Video
Decoder
Decoder
[4/9 Channel PC-based DVR]
Pentamicro Inc.
Office: 5F, M&S PLAZA, 141-2, Songpa-dong, Songpa-gu, Seoul, Korea 138-170
Tel: +82-2-417-3450 Fax: +82-2-417-3490 E-mail : sales@pentamicro.com Web: www.pentamicro.com
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