Method for adjusting data transmission sample rate and device thereof

An adjustment method and an adjustment device technology, which are applied in the direction of selective content distribution, color TV parts, TV system parts, etc., can solve problems such as broken sound or audio and video cannot be synchronized, and achieve the effect of ensuring normal playback
CN101534400BActive Publication Date: 2013-07-24VIMICRO ELECTRONICS CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
VIMICRO ELECTRONICS CORP
Publication Date
2013-07-24

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Abstract

The invention provides a method for adjusting data transmission sample rate and a device thereof. The method comprises the following steps: received data receives status signals of a buffer memory, if the status signals indicate that the data receiving buffer memory is in an empty / full state, fine-adjustment amount is adjusted and output, if the status signals indicate that the data receiving buffer memory is not in an empty / full state and the previous one or the previous plural status signals indicate that the data receiving buffer memory is in an empty / full state, then callback is carried out and the fine-adjustment amount is output; sample rate is transmitted according to the fine-adjustment amount yield data, the data transmission sample rate is used to sample data and transmit the data to the data receiving buffer memory. The invention is applied to dynamic regulation of data transmission sample rate by a sending terminal in the case of frequency difference between the sending terminal and a receiving terminal, thus realizing dynamic balance between data sending of the sending terminal and data processing of the receiving terminal.
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Description

technical field

[0001] The invention relates to the field of data transmission, in particular to a method and device for adjusting the sampling rate of data transmission. Background technique

[0002] PCTV is a TV card / video capture card, which can realize the functions of TV on a PC (person computer, personal computer), and even edit and process audio and video while watching. In PCTV and its related products, the audio and video data is transmitted from the PCTV card to the PC through the serial or parallel interface, through the USB (Universal Serial Bus) interface, and then received and processed by the drvier (driver) of the PCTV card, and then transmitted to the direct -x is transmitted to the sound card of the PC, and direct-x is an application program interface. After the sound card receives the data, it performs sampling and analog-to-digital conversion according to the pre-configured sampling rate to realize the playback of analog sound. The traditional PCTV card ...

Claims

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