公开(公告)号：WO2009124127A1

公开(公告)日：2009-10-08

申请号：PCT/US2009/039162

申请日：2009-04-01

Applicant: APPLE INC. ,  CONROY, David, G. ,  MILLET, Timothy, J. ,  SMITH, Michael, J. ,  DE CESARE, Joshua, P.

Inventor： CONROY, David, G. ,  MILLET, Timothy, J. ,  SMITH, Michael, J. ,  DE CESARE, Joshua, P.

IPC: G06F13/28

CPC classification number: G06F13/28

Abstract: A method and system is disclosed for transforming of data by a DMA controller (202) without first saving the transmitted data on an intermediate medium. The method includes the DMA controller (202) accessing data for transfer between an origination location in the system and a destination location in the system. The accessed data is passed through the DMA controller (202) before being sent to the destination location. While the data is being passed through the DMA controller (202), it is transformed into a modified state. This transformation may include encryption or decryption of the data. The transformation may also include adding error correction bits to the data through an encoding process or decoding previously encoded data. Upon completion of the transformation, the data is sent directly to a prescribed destination location, typically either a memory circuit or an I/O device. Also disclosed is a DMA controller (202) capable of performing the data transformation.

Abstract translation: 公开了一种用于通过DMA控制器（202）转换数据而不首先在中间介质上保存所发送的数据的方法和系统。 该方法包括DMA控制器（202）访问用于在系统中的发起位置和系统中的目的地位置之间传送的数据。 访问的数据在被发送到目的地位置之前通过DMA控制器（202）传送。 当数据通过DMA控制器（202）时，它被转换成修改状态。 该变换可以包括数据的加密或解密。 该变换还可以包括通过编码处理或对先前编码的数据解码来向数据添加纠错位。 完成变换后，数据直接发送到规定的目的地位置，通常是存储器电路或I / O设备。 还公开了能够执行数据变换的DMA控制器（202）。

公开(公告)号：EP2350841B1

公开(公告)日：2014-09-24

申请号：EP09791269.5

申请日：2009-08-07

Applicant: APPLE INC.

Inventor： MILLET, Timothy, J. ,  CONROY, David, G. ,  CULBERT, Michael

IPC: G06F13/12

CPC classification number: G06F13/128 ,  Y02D10/14

Abstract: A method and system is disclosed for passing data processed by a DMA controller through a transmission filter. The method includes the DMA controller accessing data for transfer between an origination location in the system and a destination location in the system. The accessed data is passed through the DMA controller before being sent to the destination location. While the data is being passed through the DMA controller, it is passed through a transmission filter for processing. This processing may include the addition or removal of transmission protocol headers and footers, and determination of the destination of the data. This processing may also include hash-based packet classification and checksum generation and checking. Upon completion of the processing, the data is sent directly to a prescribed destination location, typically either a memory circuit or an I/O device.

公开(公告)号：EP2524297A1

公开(公告)日：2012-11-21

申请号：EP11701167.6

申请日：2011-01-05

Applicant: Apple Inc.

Inventor： BRATT, Joseph, P. ,  CHOO, Shing, Horng ,  HOLLAND, Peter, F. ,  MILLET, Timothy, J.

IPC: G06F3/14 ,  H04N5/265

CPC classification number: G06F3/14 ,  G09G5/14 ,  G09G5/397 ,  G09G2340/10 ,  G09G2360/12

Abstract: A user interface unit in a graphics processing display pipe may include registers programmable with information that defines active regions of an image frame. Pixels within the active regions of the image frame are meant to be displayed, while pixels outside of the active regions of the image frame are not to be displayed. Fetch circuitry within the user interface unit may fetch frames from memory, fetching only the pixels within the active regions of the image frames as defined by the programmed contents of the registers. The user interface unit may then provide the fetched pixels to a blend unit to blend the fetched pixels with pixels from other frames or pixels of a video stream to produce output frames. When blended with pixels of a video stream, the fetched pixels may be displayed as a graphics overlay on top of the video stream.

公开(公告)号：EP2271993A1

公开(公告)日：2011-01-12

申请号：EP09726988.0

申请日：2009-04-01

Applicant: APPLE INC.

Inventor： CONROY, David, G. ,  MILLET, Timothy, J. ,  SMITH, Michael, J. ,  DE CESARE, Joshua, P.

IPC: G06F13/28

CPC classification number: G06F13/28

Abstract: A method and system is disclosed for transforming of data by a DMA controller (202) without first saving the transmitted data on an intermediate medium. The method includes the DMA controller (202) accessing data for transfer between an origination location in the system and a destination location in the system. The accessed data is passed through the DMA controller (202) before being sent to the destination location. While the data is being passed through the DMA controller (202), it is transformed into a modified state. This transformation may include encryption or decryption of the data. The transformation may also include adding error correction bits to the data through an encoding process or decoding previously encoded data. Upon completion of the transformation, the data is sent directly to a prescribed destination location, typically either a memory circuit or an I/O device. Also disclosed is a DMA controller (202) capable of performing the data transformation.