US 9,812,891 B2
Method for transferring wireless power
Yun Jae Won, Yongin-si (KR); and Seung Ok Lim, Seongnam-si (KR)
Assigned to Korea Electronics Technology Institute, Seongnam-si (KR)
Filed by Korea Electronics Technology Institute, Seongnam-si (KR)
Filed on May 17, 2016, as Appl. No. 15/156,909.
Application 15/156,909 is a division of application No. 14/255,641, filed on Apr. 17, 2014, granted, now 9,543,779.
Claims priority of provisional application 61/812,879, filed on Apr. 17, 2013.
Prior Publication US 2016/0261140 A1, Sep. 8, 2016
Int. Cl. H02J 7/00 (2006.01); H02J 7/02 (2016.01); H02J 7/04 (2006.01)
CPC H02J 7/025 (2013.01) [H02J 7/045 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method performed by a wireless charging device for receiving wireless power from a power transmission apparatus, the method comprising:
entering a hibernation power level detection state as the wireless charging device is turned on;
detecting a power level of the wireless charging device in the hibernation power detection state; and
entering one hibernation state from among a power down hibernation state, a low power hibernation state, and a stable hibernation state, according to the detected power level,
starting to receive the wireless power in response to the one hibernation state being the power down hibernation state, and detecting different types of wake-up signals based on whether the one hibernation is the low power hibernation state or the stable hibernation state.