1. Forum
  2. Usenet
  3. REC.GAMES.CHESS.MISC

  • How electronic chessboards works

    From Tugy tuk@21:1/5 to Cesar A. K. Grossmann on Wed Apr 21 19:34:16 2021
    On Thursday, February 19, 2004 at 9:04:49 PM UTC+8, Cesar A. K. Grossmann wrote:
    Ben Bulsink DGT Projects wrote:

    Study patent documents US5129654 and 5,188,368 and (NL 1009574 or US 09/345593 or DE 19929931A1 (being identical).
    Do you know is there's some sensory chessboard that is not covered by patents?
    The pieces contain a LC tuned resonator on a ferrite rod, in the
    frequency range of 90-350 KHz.
    So, no RFID/SmartTag...
    []s
    --
    .O. Cesar A. K. Grossmann ICQ UIN: 35659423
    ..O http://www.LinuxByGrossmann.cjb.net/
    OOO Quidquid Latine dictum sit, altum viditur
    Hi how to do draughts board in home

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Quadibloc@21:1/5 to DGT Projects on Thu Apr 29 17:14:23 2021
    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

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From shubham yadav@21:1/5 to Quadibloc on Wed May 17 05:08:41 2023
    On Friday, April 30, 2021 at 5:44:24 AM UTC+5:30, Quadibloc wrote:
    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
    Can we try to make this chessboard at home ourselves?

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)