公开(公告)号：US10963027B2

公开(公告)日：2021-03-30

申请号：US16673426

申请日：2019-11-04

Applicant: Apple Inc.

Inventor： Colin Whitby-Strevens ,  Bob Ridenour

IPC: G06F1/26 ,  G06F1/3215 ,  G06F1/28 ,  G06F1/3206 ,  G06F1/3218

Abstract: Methods and apparatus for the safe negotiation of high current for a High-Definition Multimedia Interface (HDMI) active cable assembly. In one embodiment, a method for detecting a Power for Cable Assembly (PCA)-capable source is disclosed, the method including: detecting, by a cable assembly, an assertion of a defined voltage on a power supply pin; forwarding an assertion of a hot plug detect signal pin, by the cable assembly, from a sink device towards the PCA-capable source; detecting, by the cable assembly, a reduction in the defined voltage on the power supply pin for a defined period of time in response to the forwarding; and detecting, by the cable assembly, a re-assertion of the defined voltage on the power supply pin subsequent to the lapse of the defined period of time. PCA dependent cable assemblies and PCA capable source devices are also disclosed.

公开(公告)号：US10466757B2

公开(公告)日：2019-11-05

申请号：US15720466

申请日：2017-09-29

Applicant: Apple Inc.

Inventor： Colin Whitby-Strevens ,  Bob Ridenour

IPC: G06F1/26 ,  G06F1/3215 ,  G06F1/3206 ,  G06F1/3218

Abstract: Methods and apparatus for the safe negotiation of high current for a High-Definition Multimedia Interface (HDMI) active cable assembly. In one embodiment, a method for detecting a Power for Cable Assembly (PCA)-capable source is disclosed, the method including: detecting, by a cable assembly, an assertion of a defined voltage on a power supply pin; forwarding an assertion of a hot plug detect signal pin, by the cable assembly, from a sink device towards the PCA-capable source; detecting, by the cable assembly, a reduction in the defined voltage on the power supply pin for a defined period of time in response to the forwarding; and detecting, by the cable assembly, a re-assertion of the defined voltage on the power supply pin subsequent to the lapse of the defined period of time. PCA dependent cable assemblies and PCA capable source devices are also disclosed.

公开(公告)号：US20190018465A1

公开(公告)日：2019-01-17

申请号：US15720466

申请日：2017-09-29

Applicant: Apple Inc.

Inventor： Colin Whitby-Strevens ,  Bob Ridenour

IPC: G06F1/26 ,  G06F1/32

CPC classification number: G06F1/266 ,  G06F1/28 ,  G06F1/3206 ,  G06F1/3215 ,  G06F1/3218

Abstract: Methods and apparatus for the safe negotiation of high current for a High-Definition Multimedia Interface (HDMI) active cable assembly. In one embodiment, a method for detecting a Power for Cable Assembly (PCA)-capable source is disclosed, the method including: detecting, by a cable assembly, an assertion of a defined voltage on a power supply pin; forwarding an assertion of a hot plug detect signal pin, by the cable assembly, from a sink device towards the PCA-capable source; detecting, by the cable assembly, a reduction in the defined voltage on the power supply pin for a defined period of time in response to the forwarding; and detecting, by the cable assembly, a re-assertion of the defined voltage on the power supply pin subsequent to the lapse of the defined period of time. PCA dependent cable assemblies and PCA capable source devices are also disclosed.