Video ASIC for 4-Channel Multiplexing
AL37204
Video ASIC for 4 Channel multiplexing
Applications Time Division Multiplexer Digital Video Recorder Video Server...
Description
AL37204
Video ASIC for 4 Channel multiplexing
Applications Time Division Multiplexer Digital Video Recorder Video Server General Description AL37204 is an ASIC solution for QUAD, Color Multiplexer, DVR and Video Server in CCTV system. It can support 4 camera inputs multiplexer for triplex operation. The input data interface is CCIR656 4:2:2 8-bit format. It has (Max.) 3 output paths for flexible combination of live/ spot monitoring, play and VCR/DVR recording. The output data interface has the analog s-video/ composite/ RGB progressive and digital CCIR656 YUV 4:2:2 8-bit and progressive RGB 4:4:4 24-bit video formats in NTSC/PAL video system. (NTSC: 30 frame/sec, PAL: 25 frame/sec). Direct memory access (DMA) allows image data to be uploaded to PC. DDR memory is supported via a direct video frame buffer interface for quick replay. Via serial I2C interface or host parallel bus, the fully programmable register sets allow flexible control of the video window overlay, OSD display, VBI, and input/output channel source selection etc. More features offered include PIP, POP, channel freeze, scaling down, re-play function, OSD function, VBI decoding and encoding, zooming with H/ V linear interpolation, anti-rolling, image panning/ flipping/ mirroring, channel switching, priority (weighting) recording, GOP recording for DVR, video loss/ blind detection and motion detection that increase the value of a high quality system designn. External Device Interface - Image CODEC Interface - AL37...
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