公开(公告)号：US09083525B2

公开(公告)日：2015-07-14

申请号：US13850159

申请日：2013-03-25

Applicant: Apple Inc.

Inventor： Colin Whitby-Strevens

IPC: G06F11/00 ,  H04L1/24 ,  H04B17/00

CPC classification number: H04L1/244 ,  H04B17/0085

Abstract: The present invention provides a method for generating random jitter test patterns by generating a sequence of maximum-size asynchronous packets according to the P1394b standard and transmitting the sequence to the device under test. The present invention provides a method for generating jitter test patterns by disabling the transmitter data scrambler of the second device; clearing the port_error register of the device under test; and sending a test pattern to said device under test. The present invention provides for a method for generating supply noise test patterns comprising: transmitting a test pattern to the DUT comprising a maximum length asynchronous packet containing alternate 0016 and FF16 bytes.

Abstract translation: 本发明提供了一种通过根据P1394b标准产生最大尺寸异步分组的序列来产生随机抖动测试模式的方法，并将该序列发送到被测设备。 本发明提供一种通过禁用第二设备的发射机数据加密器来产生抖动测试模式的方法; 清除被测设备的port_error寄存器; 并将测试模式发送到被测设备。 本发明提供了一种用于产生供应噪声测试模式的方法，包括：向DUT包括测试模式，包括包含交替的0016和FF16字节的最大长度异步分组。

公开(公告)号：US20150085905A1

公开(公告)日：2015-03-26

申请号：US14500817

申请日：2014-09-29

Applicant: Apple Inc.

Inventor： Colin Whitby-Strevens

IPC: H04B17/00 ,  H04B1/40

CPC classification number: H04B1/40 ,  H04B17/11 ,  H04L1/0001 ,  H04L25/03343

Abstract: Methods and apparatus for calibration of interface operation of a display device. In one exemplary embodiment of the invention, an embedded DisplayPort (eDP) source element (such as a graphics processing unit (GPU)) configures itself to support the minimum requirements necessary to support a sink element (such as a screen display). Unlike prior art solutions, minimum sink requirements are identified during a calibration process, and the source is configured accordingly. By tailoring the source to the specific requirements of the sink, the device can initialize faster, consume less power, etc. Moreover, in another aspect of the present invention, if a device does not initialize to an expected configuration based on prior calibration settings, the device can be flagged as having faulty or failing components.

Abstract translation: 用于校准显示装置的接口操作的方法和装置。 在本发明的一个示例性实施例中，嵌入式DisplayPort（eDP）源元件（例如图形处理单元（GPU））配置自身以支持支持宿元件（例如屏幕显示）所需的最低要求。 与现有技术的解决方案不同，在校准过程中识别最小接收器要求，并相应地配置信号源。 通过根据信宿的具体要求定制源，设备可以更快地初始化，消耗更少的功率等。此外，在本发明的另一方面，如果设备基于现有的校准设置未初始化为期望的配置， 该设备可被标记为有故障或故障组件。

公开(公告)号：US20150078479A1

公开(公告)日：2015-03-19

申请号：US14273258

申请日：2014-05-08

Applicant: Apple Inc.

Inventor： Colin Whitby-Strevens

IPC: H04B1/04 ,  H04B1/12

CPC classification number: H04B1/0475 ,  G08C19/00 ,  H04B1/12 ,  H04L25/4908

Abstract: Methods and apparatus for the intelligent association of control symbols with special symbols that are transmitted over a network. In one embodiment, the association is utilized to improve DC-balance on a transmission medium. In an exemplary variant, the special symbols originate from line codes such as the 8B/10B line code, which format a digital signal so that is optimized for transmission over a given physical channel. These control symbols are divided up according to a first criterion, while the special symbols are further divided up according to a second criterion. The divided control symbols are then allocated to the divided special symbols using a pre-designated allocation algorithm, which may or may not include a scrambling algorithm. The allocation of the control symbols improves signal characteristics and electromagnetic interference (EMI) when various ones of control symbols are ultimately transmitted over a given transmission medium.

Abstract translation: 用于通过网络传输的具有特殊符号的控制符号的智能关联的方法和装置。 在一个实施例中，该关联用于改善传输介质上的DC平衡。 在示例性变型中，特殊符号源自诸如8B / 10B线路代码的线路码，其格式化数字信号，以使其被优化用于在给定物理信道上的传输。 这些控制符号根据第一标准被分割，而特殊符号根据第二标准被进一步分割。 然后使用预先指定的分配算法将划分的控制符号分配给划分的特殊符号，预分配算法可以包括或可以不包括加扰算法。 当各种控制符号最终在给定的传输介质上传输时，控制符号的分配改善了信号特性和电磁干扰（EMI）。

公开(公告)号：US20140269954A1

公开(公告)日：2014-09-18

申请号：US13841897

申请日：2013-03-15

Applicant: APPLE, INC.

Inventor： Colin Whitby-Strevens

IPC: H04L25/03

CPC classification number: H04L25/03866 ,  G06F3/14 ,  G09G5/006 ,  G09G5/12 ,  G09G2330/06 ,  G09G2370/12 ,  H04L25/03872

Abstract: 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.

Abstract translation: 用于通过多通道串行接口加扰符号的方法和装置，以便改善不期望的电磁辐射。 在一个实施例中，加扰基于与每个通道相关联的种子值。 在第二实施例中，从加扰分量的各种抽头中选择加扰值，其中选择基于相关联的通道。 在仍然第三实施例中，每个通道与不同的加扰分量相关联。

公开(公告)号：US20130254604A1

公开(公告)日：2013-09-26

申请号：US13897312

申请日：2013-05-17

Applicant: Apple Inc.

Inventor： Colin Whitby-Strevens

IPC: G06F11/07

CPC classification number: G06F11/0751 ,  G09G3/006 ,  G09G5/005 ,  G09G5/363 ,  G09G2370/12 ,  H04L1/00 ,  H04L1/0007 ,  H04L1/203

Abstract: Methods and apparatus for estimating received error rates. In one embodiment, the estimation of received error rates is conducted in relation to a bus interface such as a high-speed High-Definition Multimedia Interface (HDMI) interface, and the method utilizes corrupted symbols that violate TMDS symbol rules, the corrupted symbols being easily detected and counted. In one exemplary implementation, a symbol error rate (SER) can be estimated from the number of detected invalid symbols. The SER can be used to diagnose the performance of the HDMI interface, and optionally as a basis for selecting or implementing corrective action(s).

公开(公告)号：US10680858B2

公开(公告)日：2020-06-09

申请号：US16443647

申请日：2019-06-17

Applicant: Apple Inc.

Inventor： Colin Whitby-Strevens

IPC: H04L25/03 ,  H04B1/04 ,  H04B15/00 ,  H04L9/00 ,  H04L9/06 ,  H03K19/17728

Abstract: 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.

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.

公开(公告)号：US10114781B2

公开(公告)日：2018-10-30

申请号：US15243824

申请日：2016-08-22

Applicant: Apple Inc.

Inventor： Colin Whitby-Strevens ,  Kevin M. Keeler ,  Christophe B. Daniel

IPC: G06F3/00 ,  G06F13/38 ,  G06F13/42 ,  G06F11/30 ,  G06F13/40

Abstract: 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.

公开(公告)号：US09979570B2

公开(公告)日：2018-05-22

申请号：US15269831

申请日：2016-09-19

Applicant: Apple Inc.

Inventor： Colin Whitby-Strevens

IPC: H04B3/00 ,  H04L25/03 ,  H04L25/08 ,  G09G5/00 ,  H04N21/4363

CPC classification number: H04L25/03866 ,  G09G5/006 ,  G09G2330/06 ,  G09G2370/12 ,  H04L25/08 ,  H04N21/43635

Abstract: 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.