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Data transmission method and device for transmitting video frame based on SRIO

A data transmission method and a technology of a data transmission device, which are applied in the field of image processing, can solve problems such as difficult and complex mutual exclusion access, achieve the effects of reducing the number of interactions, reducing the difficulty of design and implementation, and avoiding secondary copying

Active Publication Date: 2015-07-22
北京瀚景锦河科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of mutual exclusion operation is generally implemented by mechanisms such as semaphores inside the processor, but it is difficult or too complicated to realize mutual exclusion access to public resources across processors

Method used

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  • Data transmission method and device for transmitting video frame based on SRIO
  • Data transmission method and device for transmitting video frame based on SRIO
  • Data transmission method and device for transmitting video frame based on SRIO

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Embodiment Construction

[0041] In order to better understand the present invention, the solution of the present invention will be further described through specific examples below, and the protection scope of the present invention should include the entire content of the claims, but is not limited thereto.

[0042] As an application example of the method and device proposed by the present invention, it is described in detail in conjunction with the accompanying drawings as follows: figure 1 As shown in the figure, assume that the processors on both sides of the SRIO interface are processor A and processor B respectively, and processor A is the sender, which collects high-definition video images according to the set frequency. Image data is processed by SRIO transfer processor B. Processor B is the receiver, receiving each frame of high-definition image data for other processing. Processor A and processor B are connected by SRIO, and SRIO is configured as Direct I / O mode, so that processor B will not a...

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PUM

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Abstract

The invention provides a data transmission method and a data transmission device for transmitting video frame based on an SRIO, wherein the method comprises the steps as follows: writing one frame video data collected by a processor A via an SRIO interface in a first annular buffer of a memorizer interface buffer of a processor B; writing information of each field in a writing address unit of a second annular buffer of the memorizer interface buffer of the processor B according to the sequence of frame information field in turn; transmitting interrupt information with the processor A to inform the processor B; and updating the structure of a local transmission header information buffer; responding to the interrupt information with the processor B, taking the frame information from a read pointer of the second annular buffer and detecting the frame information; copying frame video transmission header information of the received frame video data to a local memorizer of the processor B, and simultaneously updating local Frame No, which represents the Frame No of the frame to be processed.

Description

technical field [0001] The invention belongs to the field of image processing, and in particular relates to an inter-processor interface method and device for transmitting video frames using an SRIO interface. Background technique [0002] SRIO (Serial RapidIO) high-speed serial interface is a new generation of high-speed interconnection technology, which is widely used in high-performance microprocessors and system interconnection interfaces. It can achieve data transmission performance levels from 1Gbps to 60Gbps. It was standardized internationally in 2004 Organization (ISO) and International Electrotechnical Commission (IEC) approved as ISO / IEC DIS 18372 standard. There are two ways for SRIO to transmit data: Direct I / O and Message Passing. The direct I / O method is generally used to transmit high-definition video data between high-speed processors, so that the initiator of video frame transmission can directly write the video frame into the receiver's interface buffer t...

Claims

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Application Information

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IPC IPC(8): H04N5/765H04N21/8547
Inventor 王万亭呼大明郑海鸥邵冬英
Owner 北京瀚景锦河科技有限公司
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