Then the issue becomes making a PCMCIA-to-CF (or SD) adapter that has the proper protocol chips to speak the "P2" language to the camera. But for pure recording of DVCPRO-HD, a single Extreme III could be fast enough (presuming that real-world experience matches the printed specs, that is!) The P2 cards are made of four of those same speed class of SD cards, RAIDed together to get an 80mBps data transfer rate, which is very handy for offloading the card at high speed. The SanDisk Extreme III CF card may actually be a single-chip solution that could be fast enough - it boasts a minimum sustained write speed of 20 megabytes per second - which would be enough to handle a DVCPRO-HD data stream. The prospect of cheap, re-loadable P2-compatible cards is very tantalizing, of course. Think of these chips as the cream of the crop cause that's literally what they are and are therefore in shorter supply. This always exacts a premium price for the chipmaker because not all the devices in a given lot will stand up to this specification. They must be zero defect with high operating temp range. Much of the cost of these cards comes from the spec Panasonic places on the makers of the SD devices. The issue of datarate is also addressed by P2 in that the 4 zero defect SD memory devices are arranged in a raid array. There are issues if compact flash is fast enough without having an array.or maybe just fast enough to write a dvcpro 50 stream.also data integrety would probably suffer.but that may not be an issue for some folks. If a p2 card costs $1,000 for 15 minutes of storage, how much wold you pay for a pcmcia card that will give you unlimited storage (of course you supply the storage)
Peter although Chris is 100% correct, don't be suprised to see the market hit with knock offs, my goal is to find a way to get the hvx to write to a pcmcia card that can be hooked up to a harddrive, compact flash array or whatever.the p2 card basically has embedded chips that give the hx the green light, the key is to get microcode and have them always give the green light.įirst person that does this i figure will be quite popular.not sure how legal it will be, it involves reverse engineering, but it can be done.
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