公开(公告)号：US20200004378A1

公开(公告)日：2020-01-02

申请号：US16436756

申请日：2019-06-10

Applicant: Apple Inc.

Inventor： Anshi Liang ,  He Yi ,  Yang Xu ,  Paolo Sacchetto ,  Jun Li ,  Jingyu Huang ,  Marc Joseph DeVincentis ,  Yue Jack Chu

IPC: G06F3/041 ,  G06F3/044 ,  G06F3/046

Abstract: Display-to-touch noise may be perceptible when a touch image generated during an active period of an electronic display of an electronic device is used to determine a touch indication on the display. The electronic device may include a display pixel layer including a plurality of display pixels that write display images to the display during a display active period and continue displaying the display image during a display blanking period. The electronic device may also include a touch sense layer including a plurality of touch sense pixels that facilitate generation of a first touch image during a first display active period and generation of a second touch image during a first display blanking period. The electronic device may further include a controller coupled to the display pixel layer and the touch sense layer that facilitates the reduction or elimination of display-to-touch interference. In particular, the controller may determine a first noise metric associated with touch images generated during the first display active period and a second noise metric associated with touch images generated during the first display blanking period. Further, the controller may instruct the touch sense layer to not generate touch images during a second display active period in response to the first noise metric being greater than a noise threshold and the second noise metric not being greater than the noise threshold.

公开(公告)号：US20190068002A1

公开(公告)日：2019-02-28

申请号：US15891210

申请日：2018-02-07

Applicant: Apple Inc.

Inventor： Anshi Liang ,  Yang Xu ,  Rui Zhang ,  Marc J. DeVincentis ,  Paolo Sacchetto

IPC: H02J50/60 ,  H02J50/80 ,  H02J50/10

Abstract: A wireless power system may have a wireless power transmitting device and a wireless power receiving device. The wireless power receiving device may have a display that operates at a frame rate. The wireless power transmitting device may transmit wireless power signals to the wireless power receiving device at an initial frequency. In response to receiving the wireless power signals or in response to a request sent by the wireless power transmitting device, the wireless power receiving device transmits information on the frame rate to the wireless power transmitting device. The wireless power transmitting device uses the initial frequency and the frame rate in determining a safe frequency to use in transmitting wireless signals to avoid or at least reduce interference with the display. The wireless power transmitting device then adjusts the wireless power transmission frequency from the initial frequency to the safe frequency.