公开(公告)号：US10462417B2

公开(公告)日：2019-10-29

申请号：US15692966

申请日：2017-08-31

Applicant: Apple Inc.

Inventor： William Cornelius ,  In Jae Chung ,  Bryan Follis ,  Pierre Michael ,  Kofi Boateng ,  Jongbae Park ,  Joseph Karaszewski

IPC: H04N7/10 ,  H04N7/015 ,  H04N21/4363 ,  H04B3/02 ,  H04B3/14 ,  G09G3/20 ,  G09G5/00

Abstract: Methods and apparatus for reducing electromagnetic interference resultant from data transmission over a high-speed audio/visual interface. In one embodiment, an HDMI source device is disclosed. The HDMI source device includes a wireless interface and an HDMI interface coupled with an active filter circuit topology. The active filter circuit topology includes a pair of differential signal lanes; a passive filter circuit disposed within each of the pair of differential signal lanes; a plurality of active filter circuits, with at least a first active filter circuit disposed on one side of the passive filter circuit and at least a second active filter circuit disposed on the other side of the passive filter circuit; a plurality of diodes, with each of the plurality of active filter circuits coupled with a respective diode; and switching logic coupled with the plurality of diodes. Methods of operating the HDMI source device and HDMI systems are also disclosed.

公开(公告)号：US20190068918A1

公开(公告)日：2019-02-28

申请号：US15692966

申请日：2017-08-31

Applicant: Apple Inc.

Inventor： William Cornelius ,  In Jae Chung ,  Bryan Follis ,  Pierre Michael ,  Kofi Boateng ,  Jongbae Park ,  Joseph Karaszewski

IPC: H04N7/10 ,  H04N7/015 ,  H04N21/4363

CPC classification number: H04N7/102 ,  G09G3/2096 ,  G09G5/006 ,  G09G2330/06 ,  G09G2370/12 ,  H04B3/02 ,  H04B3/14 ,  H04N7/015 ,  H04N7/108 ,  H04N21/43635

Abstract: Methods and apparatus for reducing electromagnetic interference resultant from data transmission over a high-speed audio/visual interface. In one embodiment, an HDMI source device is disclosed. The HDMI source device includes a wireless interface and an HDMI interface coupled with an active filter circuit topology. The active filter circuit topology includes a pair of differential signal lanes; a passive filter circuit disposed within each of the pair of differential signal lanes; a plurality of active filter circuits, with at least a first active filter circuit disposed on one side of the passive filter circuit and at least a second active filter circuit disposed on the other side of the passive filter circuit; a plurality of diodes, with each of the plurality of active filter circuits coupled with a respective diode; and switching logic coupled with the plurality of diodes. Methods of operating the HDMI source device and HDMI systems are also disclosed.