Saunamäki
Esa Ilmari Saunamäki, Virrat FI
Patent application number | Description | Published |
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20110057606 | SAFETY FEATURE FOR WIRELESS CHARGER - Example embodiments are disclosed for detecting the proximity of a user to a wireless charger and switching off or gradually reducing the power applied to the transmitting coils as long as the user is closer than a threshold distance. In embodiments, a power source circuit in a wireless charging device is configured to produce a source alternating current. A transmitting coil is configured to magnetically couple with a proximately located receiving coil in a user's device, using contact-less electromagnetic induction, to wirelessly provide power to the receiving coil. A power control circuit is coupled between the power source and the transmitting coil, having a control input configured to control power delivered from the power source to the transmitting coil. A proximity detector is positioned near the transmitting coil and coupled to the control input of the power control circuit, to detect proximity of the user to the detector and provide a control signal to the power control circuit to cause the power control circuit to reduce power delivered from the power source to the transmitting coil. In this manner, the exposure of the user is minimized near the active charging surface, to the intense electromagnetic fields required in wireless chargers. | 03-10-2011 |
20110115430 | WIRELESS ENERGY REPEATER - Embodiments of the invention are disclosed for generating a first alternating current in a resonant receiving coil at a resonant frequency in a self-resonant circuit tuned to resonate at substantially the same resonant frequency as a resonant transmitting coil in a self-resonant circuit of a wireless charger, the resonant receiving coil operating as a magnetically coupled resonator with the resonant transmitting coil. The separation distance between the two coils may be several times larger than geometric sizes of the coils. The embodiments convert the first alternating current in a power control circuit to a second alternating current at a different frequency than the resonant frequency. The embodiments drive a the power transmitting coil using the second alternating current to inductively couple with a proximately located power receiving coil in a user's device, to provide power to the power receiving coil in the user's device by contact-less electromagnetic induction. | 05-19-2011 |
Jarkko Tapio Saunamäki, Vantaa FI
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20120078999 | APPARATUS WITH ELASTICALLY TRANSFORMABLE BODY - An apparatus comprises a transformable body configured to be elastically stretchable between at least a first configuration and a second configuration, a user input device, a user input device configured to receive user input signal, a communication interface configured to provide a wireless link for the apparatus and a flexible interconnection between at least two components within the transformable body. The apparatus may perform determining of user information based on the user input signal, transmitting at least part of the user information over the wireless link to a remote processing unit, receiving feedback information from the remote processing unit and presenting the feedback information to the user. | 03-29-2012 |
Reijo Saunamäki, Espoo FI
Patent application number | Description | Published |
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20120164239 | COMPOSITION AND METHOD FOR TREATING WOOD-BASED MATERIAL AND WOOD-BASED MATERIAL TREATED WITH COMPOSITION - A composition for treating wood-based material including at least one C | 06-28-2012 |