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Patent Searching and Data


Title:
POWER SUPPLY SHEET AND ELECTRICALLY CONNECTING CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2008/032746
Kind Code:
A1
Abstract:
A power supply sheet (22) is formed by: a power supply coil sheet (50) having a plurality of power supply coils (52) arranged in a matrix; a power supply circuit sheet (60) having a power supply circuit (60a) formed for applying power for power supply to the respective power supply coils (52); a position detecting coil sheet (30) having position detecting coils (32) arranged in a matrix; and a position detecting circuit sheet (40) having a position detecting circuit (40a) for electrical connection to scan the respective position detecting coils (32). The power supply sheet (22) detects whether an electronic device having a power receiving coil exists on the power supply sheet (22) and applies power for power supply only to the power supply coils (52) corresponding to the position of the electronic device upon detection of one. This improves the efficiency of power supply to an electronic device and increases the freedom of placement of an electronic device on the power supply sheet (22).

Inventors:
SOMEYA TAKAO (JP)
SAKURAI TAKAYASU (JP)
TAKAMIYA MAKOTO (JP)
SEKIYA TSUYOSHI (JP)
Application Number:
PCT/JP2007/067755
Publication Date:
March 20, 2008
Filing Date:
September 12, 2007
Export Citation:
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Assignee:
UNIV TOKYO (JP)
SOMEYA TAKAO (JP)
SAKURAI TAKAYASU (JP)
TAKAMIYA MAKOTO (JP)
SEKIYA TSUYOSHI (JP)
International Classes:
H01F38/14; H02J17/00
Foreign References:
JP2006149168A2006-06-08
JPH11188113A1999-07-13
JPH11176677A1999-07-02
JP2003224937A2003-08-08
JP2006246633A2006-09-14
JP2005110412A2005-04-21
Attorney, Agent or Firm:
ITEC INTERNATIONAL PATENT FIRM (3-3 Uchisaiwai-cho 1-chome, Chiyoda-k, Tokyo 11, JP)
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