MULTIPLE ACCESS METHOD TO SERIAL BUS BY PLURAL CIRCUITS

    公开(公告)号:JPH11120118A

    公开(公告)日:1999-04-30

    申请号:JP21473798

    申请日:1998-06-24

    Abstract: PROBLEM TO BE SOLVED: To enable plural circuit boards to flexibly perform multiple connection to a serial bus. SOLUTION: An original software address must be allocated to each circuit board 12 before the board 12 can be used together with other circuit boards on a common serial bus 18. The original software address is allocated when a bus master device 20 outputs an address allocation command and the command utilizes an original serial number that is stored in each board 12. This address allocation command inquires each board 12 which is connected to the bus 18 and allocates an original software address to each board 12 which responds completely. An address allocation command is repeatedly issued to each board 12 on the bus 18 until the original software address is allocated to all of the boards 12 on the bus 18.

    2.
    发明专利
    未知

    公开(公告)号:AT302422T

    公开(公告)日:2005-09-15

    申请号:AT00918454

    申请日:2000-03-28

    Abstract: A radio frequency identification tag device having a sensor input which modifies a tag data word bitstream read by an interrogator/tag detector. The sensor input may be a switch contact(s), digital and/or analog. The sensor input may be voltage, current, pressure, temperature, resistance, acceleration, moisture, gas and the like. Power from the radio frequency interrogator/tag reader may be used to power the circuits of the radio frequency tag device, which in turn may supply power to any sensor connected thereto.

    3.
    发明专利
    未知

    公开(公告)号:DE60021971D1

    公开(公告)日:2005-09-22

    申请号:DE60021971

    申请日:2000-03-28

    Abstract: A radio frequency identification tag device having a sensor input which modifies a tag data word bitstream read by an interrogator/tag detector. The sensor input may be a switch contact(s), digital and/or analog. The sensor input may be voltage, current, pressure, temperature, resistance, acceleration, moisture, gas and the like. Power from the radio frequency interrogator/tag reader may be used to power the circuits of the radio frequency tag device, which in turn may supply power to any sensor connected thereto.

    4.
    发明专利
    未知

    公开(公告)号:DE60021971T2

    公开(公告)日:2006-05-18

    申请号:DE60021971

    申请日:2000-03-28

    Abstract: A radio frequency identification tag device having a sensor input which modifies a tag data word bitstream read by an interrogator/tag detector. The sensor input may be a switch contact(s), digital and/or analog. The sensor input may be voltage, current, pressure, temperature, resistance, acceleration, moisture, gas and the like. Power from the radio frequency interrogator/tag reader may be used to power the circuits of the radio frequency tag device, which in turn may supply power to any sensor connected thereto.

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