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TS flow output method and apparatus thereof

A technology of an output device and an output method, which is applied in the field of communication and can solve the problems of unevenness, unevenness, and larger deviation of TS streams.

Active Publication Date: 2016-10-19
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Because the TS flow on the entire time axis is uneven, the transmission rate of the net data volume calculated by the above method may also be uneven. The output rate is different from the actual transmission rate of the sender (uniform ) there is a certain deviation, and further, when the frame structure of the TS stream is relatively complex, or the deviation is accumulated, the output rate calculated by the above method has a larger deviation from the actual sending rate of the sending end, because the sending end sending rate is uniform Yes, when there is a large deviation between the output rate and the sending rate of the sender, the output rate is bursty and uneven, that is, the TS stream transmitted at this output rate is still an uneven TS stream

Method used

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  • TS flow output method and apparatus thereof

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Embodiment 1

[0120] Embodiment 1 of the present invention provides a TS stream output method, which is applied to a TS stream output device, such as figure 2 As shown, the method may include:

[0121] S201. The TS stream output device calculates the phase difference PE of the current system clock.

[0122] Wherein, the PE is calculated and obtained according to the current occupancy rate P of the storage unit in the TS stream output device.

[0123] Preferably, the phase difference is calculated and obtained according to the relationship between the current occupancy rate P of the storage unit and at least one adjustment threshold value, and the adjustment coefficient of the adjustment area divided by the adjustment threshold value where P is located.

[0124] When the phase difference is positive, the output rate of the TS stream is increased, and the greater the phase difference, the greater the increase; when the phase difference is negative, the output rate of the TS stream is reduce...

Embodiment 2

[0161] Embodiment 2 of the present invention provides another TS stream output method, which is applied to a TS stream output device. figure 2 The shown TS stream output method is described in detail; as image 3 As mentioned above, the TS stream output device may include a rate statistics module, an access control module, a storage unit, a digital phase-locked loop module, and an output control module.

[0162] Such as Figure 4 As shown, the method may include:

[0163] S401. The access control module receives the TS stream.

[0164] S402. The access control module writes the TS stream into the storage unit.

[0165] Optionally, the access control module writes the TS stream into the storage unit in the form of serial bits.

[0166] S403. The rate statistics module calculates the rate R of writing the X TS streams into the storage unit, and sends R to the digital phase-locked loop module.

[0167] It should be noted that, whenever the access control module receives X T...

Embodiment 3

[0273] Embodiment 3 of the present invention provides a TS stream output device 60, and the TS stream output device 60 may be part or all of a receiver in TS stream transmission. Such as Figure 6 As shown, the TS stream output device 60 may include:

[0274] a storage unit 601, configured to store a TS stream;

[0275] The digital phase-locked loop unit 602 can be used to calculate the phase difference PE of the current system clock, and the PE is calculated and obtained according to the current occupancy rate P of the storage unit in the TS stream output device;

[0276] The digital phase-locked loop unit 602 is also used to obtain an adjustment signal according to the PE of the current system clock and the rate R at which X TS streams are written into the storage unit 601, and send the adjustment signal to the output control unit 603; wherein, the adjustment signal is high level or low level; X is greater than or equal to 1;

[0277] The output control unit 603 can be us...

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Abstract

An embodiment of the invention provides a TS flow output method and an apparatus thereof and relates to the communication technology field. Uniform output of a TS flow is realized. The scheme provided in the invention comprises the following steps of through calculating a phase difference PE of a current system clock, according to the PE of the current system clock and a rate R of writing X TS flows into a memory cell, acquiring an adjusting signal; if the adjusting signal is a high level, adding 1 to an accumulated high level number M; and when the M equals to positive integer times of a data bit width of the memory cell, reading data bit width bit data from the memory cell, taking the data as an output TS flow and outputting. The method and the apparatus are used in a digital television program transmission process and a receiver outputs the TS flow to a decoder.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to a TS stream output method and device. Background technique [0002] With the development of computer technology, image compression technology and network communication technology, digital TV technology has made great progress. [0003] see figure 1 , the general digital TV program is processed from the sender to the receiver as follows: the digital TV sender compresses the TV program through the Moving Pictures Experts Group (MPEG) 2 standard, and combines the compression results into a 188-byte length Transport Stream (TS) stream, perform forward error correction code (Forward Error Correction, FEC) encoding and time interleaving on the compressed TS stream, and then modulate the processed data packets to a specific channel Sending; when the receiver receives the processed data packets, it first demodulates the data, deinterleaves the data, and decodes the FEC to obtain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/2383H04N21/231
Inventor 万民永
Owner HUAWEI TECH CO LTD
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