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A method and device for simultaneously transmitting multiple TS streams using single-channel DMA

A simultaneous transmission and single-channel technology, applied in the direction of image communication, color TV parts, TV system parts, etc., can solve the problems of high cost and occupying a lot of chip resources, and achieve the effect of solving high cost

Active Publication Date: 2021-12-17
JINGGANGSHAN ELECTRIC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The present invention provides a method and device for simultaneously transmitting multiple TS streams using single-channel DMA, which is used to solve the problem that traditional multi-channel TS stream transmission requires multi-channel DMA or multiple DMA transmissions, resulting in high cost and occupying more chip resources. question

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  • A method and device for simultaneously transmitting multiple TS streams using single-channel DMA
  • A method and device for simultaneously transmitting multiple TS streams using single-channel DMA
  • A method and device for simultaneously transmitting multiple TS streams using single-channel DMA

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Embodiment Construction

[0040] The present invention provides a method and device for simultaneously transmitting multiple TS streams using single-channel DMA, which is used to solve the problem that traditional multi-channel TS stream transmission requires multi-channel DMA or multiple DMA transmissions, resulting in high cost and occupying more chip resources. question.

[0041] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present ...

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Abstract

The present invention provides a method and device for simultaneously transmitting multiple TS streams using single-channel DMA, wherein the method includes: changing the first bit of the TS packet of each TS stream into a flag ID, and the flag ID and the TS stream have a corresponding relationship; combine more than two TS streams to be processed into one TS stream and transmit it through single-channel DMA; determine the TS stream to which the TS packet belongs according to the ID of the TS packet in the TS stream, and restore the ID to the original No. One bit, the TS packet is sent to the interrupt handler corresponding to the TS stream to which the TS packet belongs. In the present invention, after setting the flag ID and synthesizing two or more TS streams to be processed into one TS stream, the CPU can determine which TS in the multiple TS streams the TS packets in the synthesized TS stream belong to by setting the flag ID stream, realizes the simultaneous transmission of multiple TS streams through single-channel DMA, and solves the technical problems that traditional multi-channel TS stream transmission requires multi-channel DMA transmission, resulting in high cost and occupying more chip resources.

Description

technical field [0001] The invention relates to the technical field of data transmission processing, in particular to a method and device for simultaneously transmitting multiple TS streams by using single-channel DMA. Background technique [0002] In the television transmission system, standard TS streams are widely used for digital audio and video transmission. When users watch and record programs, they first need to obtain TV transmission signals through antennas or coaxial cables, and then perform down-conversion and demodulation processing to obtain TS streams containing audio and video program information. After obtaining one or more than two TS streams, it usually needs to be forwarded to the CPU by DMA for decoding processing. [0003] DMA: Direct Memory Access (DMA) is a memory access technique in computer science. It allows some hardware subsystems (computer peripherals) inside the computer to directly read and write the system memory independently without the in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/236H04N21/4385H04N21/4402H04N5/265
CPCH04N5/265H04N21/236H04N21/4385H04N21/4402
Inventor 谢新辉
Owner JINGGANGSHAN ELECTRIC CO LTD