Patent ID: 6792246
Filing Date: 2004-09-14
Classification: G06F,H04M,H04N

Abstract:
A noncontact transmitting apparatus comprising:a first noncontact transmitting unit mounted on a main device; and a second noncontact transmitting unit mounted on an attachment device, said second noncontact transmitting unit being removably attachable to said first noncontact transmitting unit, for enabling noncontact signal transfer between said main device and said attachment device, wherein each of said first and second noncontact transmitting units comprises: a power coil wound on a first core to supply power from said main device to said attachment device by electromagnetic induction, wherein said first core of said first noncontact transmitting unit and said first core of said second noncontact transmitting unit face each other when said attachment device is attached to said main device; and at least one signal coil wound on at least one second core for signal transfer between said main device and said attachment device by electromagnetic induction, wherein, when said attachment device is attached to said main device, said second core of said first noncontact transmitting unit and said second core of said second noncontact transmitting unit may, selectively, face each other, at a first position, for signal transmission between said signal coils by electromagnetic induction, and may be displaced from each other to a second position, inhibiting signal transmission between said signal coils by electromagnetic induction.