公开(公告)号：US11670252B2

公开(公告)日：2023-06-06

申请号：US16888606

申请日：2020-05-29

Applicant: Apple Inc.

Inventor： Simon M. Douglas ,  Ross Thompson ,  Russell A. Blaine ,  Arthur L. Spence ,  Brad W. Simeral ,  Giovanni M. Agnoli ,  Chendi Zhang ,  Jacob Z. Weiss ,  Yiqiang Nie ,  Brent W. Schorsch

IPC: G06F1/3218 ,  G09G3/36

CPC classification number: G09G3/3611 ,  G06F1/3218 ,  G09G2330/021 ,  G09G2360/18

Abstract: A device implementing a system for displaying an image includes a processor configured to, generate, during a first power state of a device, a data structure specifying image frames and a respective display time for each of the image frames, and retrieve, during a second power state of the device and from the data structure, an image frame based on the respective display time for the image frame. The at least one processor is further configured to display, during a third power state of the device, the retrieved image frame on a display of the device.

公开(公告)号：US11086800B2

公开(公告)日：2021-08-10

申请号：US16882087

申请日：2020-05-22

Applicant: Apple Inc.

Inventor： Jeremy C. Andrus ,  Joseph R. Auricchio ,  Russell A. Blaine ,  Daniel A. Chimene ,  Simon M. Douglas ,  Landon J. Fuller ,  Yevgen Goryachok ,  John K. Kim-Biggs ,  Arnold S. Liu ,  James M. Magee ,  Daniel A. Steffen ,  Roberto G. Yepez

IPC: G06F12/14 ,  G06F13/10 ,  G06F13/40 ,  G06F9/54 ,  G06F9/445 ,  G06F13/16

Abstract: Embodiments described herein provide techniques to manage drivers in a user space in a data processing system. One embodiment provides a data processing system configured perform operations, comprising discovering a hardware device communicatively coupled to the communication bus, launching a user space driver daemon, establishing an inter-process communication (IPC) link between a first proxy interface for the user space driver daemon and a second proxy interface for a server process in a kernel space, receiving, at the first proxy interface, an access right to enable access to a memory buffer in the kernel space, and relaying an access request for the memory buffer from the user space driver daemon via a third-party proxy interface to enable the user space driver daemon to access the memory buffer, the access request based on the access right.

公开(公告)号：US09336560B2

公开(公告)日：2016-05-10

申请号：US14450789

申请日：2014-08-04

Applicant: Apple Inc.

Inventor： Thomas W. Costa ,  Simon M. Douglas ,  David J. Redman

IPC: G06F15/80 ,  G06T1/20 ,  G06F1/32 ,  G06F9/44 ,  G06F15/76

CPC classification number: G06T1/20 ,  G06F1/3203 ,  G06F1/3287 ,  G06F1/3293 ,  G06F9/4411 ,  G06F15/76 ,  Y02D10/122 ,  Y02D10/171

Abstract: The disclosed embodiments provide a system that facilitates seamlessly switching between graphics-processing units (GPUs) to drive a display. In one embodiment, the system receives a request to switch from using a first GPU to using a second GPU to drive the display. In response to this request, the system uses a kernel thread which operates in the background to configure the second GPU to prepare the second GPU to drive the display. While the kernel thread is configuring the second GPU, the system continues to drive the display with the first GPU and a user thread continues to execute a window manager which performs operations associated with servicing user requests. When configuration of the second GPU is complete, the system switches the signal source for the display from the first GPU to the second GPU.

Abstract translation: 所公开的实施例提供一种便于在图形处理单元（GPU）之间无缝切换以驱动显示的系统。 在一个实施例中，系统接收从使用第一GPU切换到使用第二GPU来驱动显示器的请求。 响应于该请求，系统使用在后台运行的内核线程来配置第二GPU以准备第二GPU来驱动显示。 当内核线程配置第二个GPU时，系统继续使用第一个GPU驱动显示，用户线程继续执行窗口管理器，该窗口管理器执行与维护用户请求相关的操作。 当第二GPU的配置完成时，系统将显示器的信号源从第一GPU切换到第二GPU。

公开(公告)号：US11860796B2

公开(公告)日：2024-01-02

申请号：US17397966

申请日：2021-08-09

Applicant: Apple Inc.

Inventor： Jeremy C. Andrus ,  Joseph R. Auricchio ,  Russell A. Blaine ,  Daniel A. Chimene ,  Simon M. Douglas ,  Landon J. Fuller ,  Yevgen Goryachok ,  John K. Kim-Biggs ,  Arnold S. Liu ,  James M. Magee ,  Daniel A. Steffen ,  Roberto G. Yepez

IPC: G06F9/54 ,  G06F21/57 ,  G06F13/10 ,  G06F13/40 ,  G06F9/445 ,  G06F13/16

CPC classification number: G06F13/102 ,  G06F9/44505 ,  G06F9/545 ,  G06F9/546 ,  G06F13/1673 ,  G06F13/4072

Abstract: Embodiments described herein provide techniques to manage drivers in a user space in a data processing system. One embodiment provides a data processing system configured perform operations, comprising discovering a hardware device communicatively coupled to the communication bus, launching a user space driver daemon, establishing an inter-process communication (IPC) link between a first proxy interface for the user space driver daemon and a second proxy interface for a server process in a kernel space, receiving, at the first proxy interface, an access right to enable access to a memory buffer in the kernel space, and relaying an access request for the memory buffer from the user space driver daemon via a third-party proxy interface to enable the user space driver daemon to access the memory buffer, the access request based on the access right.

公开(公告)号：US20200379925A1

公开(公告)日：2020-12-03

申请号：US16882087

申请日：2020-05-22

Applicant: Apple Inc.

Inventor： Jeremy C. Andrus ,  Joseph R. Auricchio ,  Russell A. Blaine ,  Daniel A. Chimene ,  Simon M. Douglas ,  Landon J. Fuller ,  Yevgen Goryachok ,  John K. Kim-Biggs ,  Arnold S. Liu ,  James M. Magee ,  Daniel A. Steffen ,  Roberto G. Yepez

IPC: G06F13/10 ,  G06F13/40 ,  G06F9/54 ,  G06F9/445 ,  G06F13/16

Abstract: Embodiments described herein provide techniques to manage drivers in a user space in a data processing system. One embodiment provides a data processing system configured perform operations, comprising discovering a hardware device communicatively coupled to the communication bus, launching a user space driver daemon, establishing an inter-process communication (IPC) link between a first proxy interface for the user space driver daemon and a second proxy interface for a server process in a kernel space, receiving, at the first proxy interface, an access right to enable access to a memory buffer in the kernel space, and relaying an access request for the memory buffer from the user space driver daemon via a third-party proxy interface to enable the user space driver daemon to access the memory buffer, the access request based on the access right.

公开(公告)号：US20140340411A1

公开(公告)日：2014-11-20

申请号：US14450789

申请日：2014-08-04

Applicant: Apple Inc.

Inventor： Thomas W. Costa ,  Simon M. Douglas ,  David J. Redman

IPC: G06T1/20 ,  G06F15/76

CPC classification number: G06T1/20 ,  G06F1/3203 ,  G06F1/3287 ,  G06F1/3293 ,  G06F9/4411 ,  G06F15/76 ,  Y02D10/122 ,  Y02D10/171

Abstract: The disclosed embodiments provide a system that facilitates seamlessly switching between graphics-processing units (GPUs) to drive a display. In one embodiment, the system receives a request to switch from using a first GPU to using a second GPU to drive the display. In response to this request, the system uses a kernel thread which operates in the background to configure the second GPU to prepare the second GPU to drive the display. While the kernel thread is configuring the second GPU, the system continues to drive the display with the first GPU and a user thread continues to execute a window manager which performs operations associated with servicing user requests. When configuration of the second GPU is complete, the system switches the signal source for the display from the first GPU to the second GPU.

Abstract translation: 所公开的实施例提供一种便于在图形处理单元（GPU）之间无缝切换以驱动显示的系统。 在一个实施例中，系统接收从使用第一GPU切换到使用第二GPU来驱动显示器的请求。 响应于该请求，系统使用在后台运行的内核线程来配置第二GPU以准备第二GPU来驱动显示。 当内核线程配置第二个GPU时，系统继续使用第一个GPU驱动显示，用户线程继续执行窗口管理器，该窗口管理器执行与维护用户请求相关的操作。 当第二GPU的配置完成时，系统将显示器的信号源从第一GPU切换到第二GPU。