On Thursday, February 19, 2004 at 5:07:28 AM UTC-7, Ben Bulsink DGT Projects wrote:
The pieces contain a LC tuned resonator on a ferrite rod, in the
frequency range of 90-350 KHz.
Thank you for your informative post.
That avoids reliance on such high-tech as RFID, but it still allows individual pieces to
be differentiated, making the board more convenient than old-style "sensory" boards
which still required players to take certain artificial steps when playing.
Frank Camaratta, the man behind House of Staunton, holds a patent on a method of
making heavily-weighted chess pieces that can still be used with DGT, patent US20160059115A1.
John Savard
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