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Sampling frequency adjusting method and sampling device for data streams

A technology of sampling frequency and adjustment method, applied in the field of data transmission, can solve the problem of inaccurate data flow sampling, and achieve the effect of accurate data flow sampling

Active Publication Date: 2013-12-04
ANALOGIX CHINA SEMICON +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The main purpose of the present invention is to provide a data stream sampling frequency adjustment method and a sampling device to solve the problem of inaccurate data stream sampling

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  • Sampling frequency adjusting method and sampling device for data streams
  • Sampling frequency adjusting method and sampling device for data streams
  • Sampling frequency adjusting method and sampling device for data streams

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Embodiment Construction

[0026] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0027] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0028] It should be noted that the terms "fir...

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Abstract

The invention discloses a sampling frequency adjusting method and a sampling device for data streams to solve the problem of inaccurate data stream sampling. The method comprises obtaining a first time sequence tag transmitted through a channel; obtaining a link clock; obtaining a second time sequence tag according to the first time sequence tag, wherein the first time sequence tag is restored to a data stream clock, and the second time sequence tag is obtained according to the data stream clock and the link clock; comparing the first time sequence tag with the second time sequence tag to obtain a time sequence tag difference value; adjusting the sampling frequency according to the time sequence tag difference value; sampling the data streams according to the adjusted sampling frequency. By means of the data stream sampling frequency adjusting method and the sampling device, the data streams can be sampled accurately.

Description

technical field [0001] The invention relates to the field of data transmission, in particular to a method for adjusting the sampling frequency of a data stream and a sampling device. Background technique [0002] Typically, the source of a data transmission system is capable of transmitting a continuous stream of data, such as a video stream or an audio stream. The data transmitted on the communication channel often contains clock information, so the clock information must be recovered from the data at the end of the communication, and then data information such as audio data can be recovered. [0003] Because the clock information cannot be directly transmitted in the channel, before transmitting the clock, the clock data needs to be quantized, and the clock information is transmitted through the data packet. In the process of quantizing the data, it will cause bias, but the digital quantized average value over a long period of time is accurate. When receiving the clock d...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L7/00H04L7/033H04L7/06
Inventor 宋红东陈鹏赵宁
Owner ANALOGIX CHINA SEMICON