Apple Inc.

Colin Whitby-Strevens

Jerrold Von Hauck

Sreeraman Anantharaman

Moon Jung Kim

Brijesh Tripathi

William P Cornelius

Michael David Johas Teener

Eric Werner Anderson

Geertjan Joordens

George C Kyriazis

Min Chul Kim

Keith E Diefendorff

Paul A Baker

Richard J Middlehurst

Glenn Wheelock

Michael W Murphy

Raman S Thiara

David Ferguson

Stewart Shannon Fields

Ron Hochsprung

Matthew K Herndon

Anilkumar Raman Pannikkat

Bob Ridenour

Ron Larson

Ian C Hendry

David Gerard Conroy

Robert J Johnston

Eric G Smith

Kevin M Keeler

Robert L Ridenour

Brijesh Tripathy

Micheal D Johas Teener

Christophe B Daniel

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.

Methods and apparatus for safe negotiation of high current for active cable assemblies

Video data and auxiliary data may be sent between a processor and a display device via a single cable using a link aggregator. As such, the link aggregator may receive a first parallel signal that may include the video data and a second parallel signal that may include auxiliary data from the processor. The link aggregator may then send the first parallel signal and the second parallel signal as an aggregated signal to the display device. Upon receiving the aggregated signal at the display device, the link aggregator may de-aggregate the aggregated signal into the first parallel signal and the second parallel signal. The link aggregator may then send the first parallel signal and the second parallel signal to a timing controller of the display device, such that the timing controller may display the video data using the display device.

Link aggregator for an electronic display

Methods and apparatus for the scrambling of control symbols. In one embodiment, the control symbols are associated with an HDMI interface, and the methods and apparatus are configured to scramble the symbols to as to mitigate the effects of electromagnetic interference (EMI) created by the transmission of otherwise unscrambled sequences of symbols which may contain significant 'clock pattern' or other undesirable artifact.

Methods and apparatus for the intelligent scrambling of control symbols

Methods and apparatus for virtual channel allocation within an electronic device. In one exemplary embodiment, the device is a consumer electronics device having multiple camera sensors uses a modified high-speed protocol (e.g., DisplayPort Multi-Stream Transport (MST) protocol) to process camera data via one or more virtual channels. Unlike traditional solutions which rely on an intelligent source device to manage a network of devices, the present disclosure describes in one aspect a network of nodes internal to a consumer electronic device that is managed by the sink node (i.e., a 'smart sink'). Additionally, since the full suite of protocol (e.g., DisplayPort) capabilities are unnecessary for certain design scenarios, certain further disclosed simplifications improve performance for sink nodes having very modest capabilities.

Apparatus for virtual channel allocation via a high speed bus interface

Methods and apparatus for packing and transporting data within an electronic device. In one embodiment, a consumer electronics device having one or more sensors (e.g., camera sensors) uses modified DisplayPort micro-packets for transmission of RAW format data over one or more lanes of a DisplayPort Main Steam. The RAW data is transported over the one or more lanes by mapping symbol sequences generated from the RAW data based on Y-only data mappings schemes of DisplayPort. A mapping scheme is in one variant selected based on the bits length (e.g., bits per pixel) of the RAW data, in addition to the number of lanes used to transport over the Main Stream. In order for the sink correctly unpack received the micro-packets, the transmitting source transmits Main Stream Attribute (MSA) data packets configured to indicate at least the mapping scheme used.

Apparatus and methods for packing and transporting raw data

Methods and apparatus for the selection and/or configuration of scrambling operations to accommodate e.g., both scrambling and non-scrambling connections (such as to e.g., legacy type devices). In one embodiment, media interface devices (such as e.g., HDMI (High-Definition Multimedia Interface)) devices may provide enhanced scrambling capabilities; solutions disclosed herein provide, among other things, support for both enhanced scrambling capable devices and legacy devices, and enable a device to determine the scrambling capabilities of a connected device.

Methods and apparatus for enabling and disabling scrambling of control symbols

A display system includes a host device that provides source data to a display. The source data includes one or more data-centric blocks free from a fixed-frame size imposition, fixed-frame rate imposition, or both from the display. Further, the source data includes presentation data. The display system includes a display that receives the source data, decodes the source data to discern a presentation time, a presentation positioning, or both for the presentation data. Further, the display presents the presentation data according to the presentation time, the presentation positioning, or both.

Data centric display communications

Methods and apparatus for virtual channel allocation via a high speed bus interface

Methods, structures, and apparatus that limit the amount of dendritic growth and metal migration between contacts in order to prevent an erroneous detection of a connection and/or functional failure. One example may reduce dendritic growth and metal migration by limiting an amount of time that a connection detection voltage is applied to CC contacts of a USB Type-C connector when an electronic device is detecting a connection. This and other examples may further limit dendritic growth by not applying the connection detection voltage to the CC contacts for a first duration following a detection of a disconnection.

Contact corrosion mitigation

Methods and apparatus for scrambling symbols over multi-lane serial interfaces in order to improve undesired electromagnetic emissions. In one embodiment the scrambling is based on a seed value associated with each lane. In a second embodiment, the scrambling values are selected from various taps of a scrambling component, where the selection is based on the associated lane. In still a third embodiment, each lane is associated with a distinct scrambling component.

Methods and apparatus for scrambling symbols over multi-lane serial interfaces

Growing community of inventors

Ben Lomond, CA, United States of America

Colin Whitby-Strevens