JP2014011636A5

JP2014011636A5 -

Info

Publication number: JP2014011636A5
Application number: JP2012147150A
Authority: JP
Filing date: 2012-06-29
Publication date: 2015-08-13
Anticipated expiration: 2032-06-29

Description

送信バッファに送信データが滞留してしまうと、受信装置におけるデータ受信のリアルタイム性が確保できなくなってしまう可能性がある。If transmission data stays in the transmission buffer, there is a possibility that the real-time property of data reception in the receiving device cannot be secured.

すなわち、映像データに基づくパケットデータを保持するバッファ手段と、前記パケットデータを受信装置へ送信する送信手段と、他のフレームデータを参照しないで復号されるフレームデータのパケットデータが前記バッファ手段に保持されることに応じて、前記バッファ手段に保持されているパケットデータのうちの少なくとも一部のパケットデータを送信させずに、他のフレームデータを参照しないで復号されるフレームデータのパケットデータを前記送信手段から前記受信装置へ送信させる送信制御手段とを有する。 That is, buffer means for holding packet data based on video data, transmission means for transmitting the packet data to a receiving device, and packet data of frame data to be decoded without referring to other frame data are held in the buffer means In response, the packet data of the frame data to be decoded without referring to other frame data without transmitting at least a part of the packet data held in the buffer means. to have a transmission control means for transmitting from the transmitting means to the receiving device.

本発明によれば、受信装置に配信されるデータのリアルタイム性を高めることができる。 ADVANTAGE OF THE INVENTION According to this invention, the real time property of the data delivered to a receiver can be improved.

Claims

Buffer means for holding packet data based on video data ;
Transmitting means for transmitting the packet data to a receiving device ;
In response to the fact that packet data of frame data to be decoded without referring to other frame data is held in the buffer means, at least part of the packet data held in the buffer means is transmitted. And transmitting control means for transmitting packet data of frame data decoded without referring to other frame data from the transmitting means to the receiving apparatus.

When the transmission control unit does not transmit at least a part of the packet data held in the buffer unit from the transmission unit to the reception device, a part of the packet data constituting the frame data is The transmission unit causes the remaining packet data to be transmitted from the transmission unit to the reception device when the transmission unit transmits the remaining packet data to the reception unit and holds the remaining packet data in the buffer unit. The transmission device according to 1.

The transmission control means is configured to form a head of first frame data in a case where at least a part of packet data held in the buffer means is not transmitted from the transmission means to the receiving device . when the first packet data is held in said buffer means, characterized in that the packet data included in the first frame data held in said buffer means, not transmitted from said transmitting means to the receiving device The transmission device according to claim 1 or 2 .

The transmitting apparatus according to claim 1, wherein the at least part of the packet data is packet data of frame data decoded with reference to other frame data.

The transmission control means includes: a state in which the amount of data held by the buffer means exceeds a predetermined threshold; a state in which the network is congested; a state in which the receiving device cannot receive a packet; When the time held in the buffer means exceeds any of the predetermined threshold values, at least a part of the packet data held in the buffer means is transmitted to the transmission means The transmission device according to claim 1, wherein the transmission device is not allowed to transmit to the reception device.

The transmission control means controls packets not to be transmitted from the transmission means to the receiving device when the data amount of the packet data held in the buffer means is larger than a first threshold value and smaller than or equal to a second threshold value. If the data amount of the packet data held in the buffer means is larger than the second threshold value than the data amount of the data, the data amount of the packet data to be controlled so as not to be transmitted from the transmitting means to the receiving device is 6. The control according to claim 1, wherein control is performed so that at least a part of the packet data held in the buffer means is not transmitted from the transmitting means to the receiving device so as to increase . The transmission device according to any one of the above.

The transmission control means may receive at least some of the packet data held in the buffer means when the data amount of the packet data held in the buffer means is larger than the second threshold value. 7. The transmission apparatus according to claim 6, wherein when performing control not to transmit, control is performed so that all packet data held in the buffer means is not transmitted from the transmission means to the reception apparatus.

A transmission method using transmission means for transmitting packet data based on video data to a receiving device,
A holding step of hold in buffer means said packet data,
In response to the fact that packet data of frame data to be decoded without referring to other frame data is held in the buffer means, at least part of the packet data held in the buffer means is transmitted. without let, transmission method and a sending control step of transmitting to the receiving device the packet data of frame data to be decoded without reference to another frame data from said transmitting means.

In the transmission control step, in a case where at least a part of the packet data held in the buffer unit is not transmitted from the transmission unit to the receiving device, a part of the packet data constituting the frame data is The transmission unit causes the remaining packet data to be transmitted from the transmission unit to the reception device when the transmission unit transmits the remaining packet data to the reception unit and holds the remaining packet data in the buffer unit. 9. A transmission method of the transmission device according to 8.

In the transmission control step, in a case where at least a part of packet data held in the buffer means is not transmitted from the transmission means to the receiving device, the first frame data constituting the head of the first frame data when the first packet data is held in said buffer means, characterized in that the packet data included in the first frame data held in said buffer means, not transmitted from said transmitting means to the receiving device The transmission method according to claim 8 or 9 .

Wherein at least a portion of the packet data transmission method according to any one of claims 8 to 10, wherein the Ru Oh packet data of the frame data to be decoded with reference to another frame data.

In the transmission control step, a state in which the amount of data held by the buffer means exceeds a predetermined threshold, a state in which the network is congested, a state in which the receiving apparatus cannot receive a packet, and one packet data When the time held in the buffer means exceeds any of the predetermined threshold values, at least a part of the packet data held in the buffer means is transmitted to the transmission means the transmission method according to any one of claims 8 to 11, characterized in that not to transmit to the receiving device from.

In the transmission control step, a packet that is controlled so as not to be transmitted from the transmission unit to the reception device when the data amount of the packet data held in the buffer unit is greater than a first threshold value and less than or equal to a second threshold value. If the data amount of the packet data held in the buffer means is larger than the second threshold value than the data amount of the data, the data amount of the packet data to be controlled so as not to be transmitted from the transmitting means to the receiving device is The control according to claim 8, wherein control is performed so that at least a part of the packet data held in the buffer means is not transmitted from the transmitting means to the receiving device so as to increase . The transmission method according to any one of the above items .

In the transmission control step, when the data amount of the packet data held in the buffer unit is larger than the second threshold , at least a part of the packet data held in the buffer unit is 14. The transmission method according to claim 13, wherein when performing control not to transmit, control is performed to prevent all packet data held in the buffer unit from being transmitted from the transmission unit to the receiving device.

The program for functioning a computer as a transmission control means of any one of Claims 1-7.