H.261 Encoder

The VP2611 Video Compression Source Coder forms part of a chip set used in Video conferencing, Video Telephony and Multimedia applications. It produces data which conforms to the H261 standard for Video compression with rates between 64K and 2M bits per second. With a 27 MHz Clock the device will accept data produced to full CIF resolution at 30 Hz frame rates. The pipeline latency through the device is only 3 macro block periods. The VP2611 contains all the elements necessary for the compression algorithm. It incorporates a Motion Vector Esti- mator which performs a +/- 7 pixel search. The decision to use inter or intra frame compression is made by the device, and the selected data blocks are read from the frame store. New or difference data is then passed through a Discrete Cosine Transformer and quantized. Data from the quantizer is also inverse quantized and passed through an Inverse Discrete Cosine Transformer. This re-constructed data is then written to the frame store for use in the next frame period.This frame store is managed by an internal DRAM controller, and no external Logic is needed. By Mitel
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VP2611 Pinout will be updated soon..., now you can download the pdf datasheet to check the pinouts !
VP2611 circuits will be updated soon..., now you can download the pdf datasheet to check the circuits!

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