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A data transmission method and device for transmitting video frames 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: 2017-11-03
北京瀚景锦河科技有限公司
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  • Summary
  • 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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  • A data transmission method and device for transmitting video frames based on SRIO
  • A data transmission method and device for transmitting video frames based on SRIO
  • A data transmission method and device for transmitting video frames based on SRIO

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Embodiment Construction

[0040] 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.

[0041] 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 device for transmitting video frames based on SRIO. The method comprises: writing a frame of video data collected by processor A into the first ring buffer of the memory interface buffer of processor B through the SRIO interface; In the write address unit of the second ring buffer of the memory interface buffer of device B; Processor A sends an interrupt message to notify processor B; And updates the local transmission header information buffer structure; Processor B responds to the interrupt message, from the first The read pointer of the ring buffer takes out the frame information and checks the frame information; the frame video transmission header information of the received frame video data is copied to the local memory of processor B, and the local Frame No is updated at the same time, and the local Frame No indicates that it is about to Frame No of the processing frame.

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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Patent Type & Authority Patents(China)
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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