IMAGE DATA TRANSMISSION DEVICE, IMAGE DATA TRANSMISSION METHOD, AND IMAGE DATA RECEPTION DEVICE
A reception side is enabled to appropriately and accurately handle a dynamic variation in delivery content and to receive a correct stream. One or a plurality of video streams including a predetermined number of image data items are transmitted. Auxiliary information for identifying a first transmission mode in which a plurality of image data items are transmitted and a second transmission mode in which a single image data item is transmitted is inserted into the video stream. A reception side identifies a transmission mode of a received video stream and performs an appropriate process so as to acquire a predetermined number of image data items on the basis of auxiliary information which is inserted into the received video stream in both a 3D period and a 2D period, only in the 3D period, or only in the 2D period.
1 . An image data transmission device comprising:
a transmission unit that transmits one or a plurality of video streams including a predetermined number of image data items; and
an information inserting unit that inserts auxiliary information for identifying a first transmission mode in which a plurality of image data items are transmitted and a second transmission mode in which a single image data item is transmitted, into the video stream.
2 . The image data transmission device according to claim 1 ,
wherein the information inserting unit inserts auxiliary information indicating the first transmission mode into the video stream in the first transmission mode and inserts auxiliary information indicating the second transmission mode into the video stream in the second transmission mode.
3 . The image data transmission device according to claim 1 ,
wherein the information inserting unit inserts auxiliary information indicating the first transmission mode into the video stream in the first transmission mode and does not insert the auxiliary information into the video stream in the second transmission mode.
4 . The image data transmission device according to claim 1 ,
wherein the information inserting unit does not insert the auxiliary information into the video stream in the first transmission mode and inserts auxiliary information indicating the second transmission mode into the video stream in the second transmission mode.
5 . The image data transmission device according to claim 1 ,
wherein the information inserting unit inserts the auxiliary information into the video stream, at least with the program unit, the scene unit, the picture group unit, or the picture unit.
6 . The image data transmission device according to claim 1 ,
wherein the transmission unit transmits a base video stream including first image data and a predetermined number of additional video streams including second image data used along with the first image data in the first transmission mode, and transmits a single video stream including the first image data in the second transmission mode.
7 . The image data transmission device according to claim 1 ,
wherein the transmission unit transmits a base video stream including first image data and a predetermined number of additional video streams including second image data used along with the first image data in the first transmission mode, and transmits a base video stream including first image data and a predetermined number of additional video streams substantially including image data which is the same as the first image data in the second transmission mode.
8 . The image data transmission device according to claim 1 ,
wherein the first transmission mode is a stereoscopic image transmission mode in which base view image data and non-base view image data used along with the base view image data are transmitted so as to display a stereoscopic image, and the second transmission mode is a two-dimensional image transmission mode in which two-dimensional image data is transmitted.
9 . The image data transmission device according to claim 8 ,
wherein the auxiliary information indicating the stereoscopic image transmission mode includes information indicating a relative positional relationship of each view.
10 . The image data transmission device according to claim 1 ,
wherein the first transmission mode is an extension image transmission mode in which image data of the lowest layer forming scalable coded image data and image data of layers other than the lowest layer are transmitted, and the second transmission mode is a base image transmission mode in which base image data is transmitted.
11 . The image data transmission device according to claim 1 ,
wherein the transmission unit transmits a container of a predetermined format including the video stream, and
wherein the image data transmission device further includes identification information inserting unit that inserts identification information for identifying whether to be in the first transmission mode or in the second transmission mode, into a layer of the container.
12 . An image data transmission method comprising:
a transmission step of transmitting one or a plurality of video streams including a predetermined number of image data items; and
an information inserting step of inserting auxiliary information for identifying a first transmission mode in which a plurality of image data items are transmitted and a second transmission mode in which a single image data item is transmitted, into the video stream.
13 . An image data reception device comprising:
a reception unit that receives one or a plurality of video streams including a predetermined number of image data items;
a transmission mode identifying unit that identifies a first transmission mode in which a plurality of image data items are transmitted and a second transmission mode in which a single image data item is transmitted on the basis of auxiliary information which is inserted into the received video stream; and
a processing unit that performs a process corresponding to each mode on the received video stream on the basis of the mode identification result, so as to acquire the predetermined number of image data items.
14 . The image data reception device according to claim 13 ,
wherein the transmission mode identifying unit identifies the first transmission mode when auxiliary information indicating the first transmission mode is inserted into the received video stream, and identifies the second transmission mode when auxiliary information indicating the second transmission mode is inserted into the received video stream.
15 . The image data reception device according to claim 13 ,
wherein the transmission mode identifying unit identifies the first transmission mode when auxiliary information indicating the first transmission mode is inserted into the received video stream, and identifies the second transmission mode when the auxiliary information is not inserted into the received video stream.
16 . The image data reception device according to claim 13 ,
wherein the transmission mode identifying unit identifies the first transmission mode when the auxiliary information is not inserted into the received video stream, and identifies the second transmission mode when auxiliary information indicating the second transmission mode is inserted into the received video stream.
17 . The image data reception device according to claim 13 ,
wherein the reception unit receives a base video stream including first image data and a predetermined number of additional video streams including second image data used along with the first image data in the first transmission mode, and receives a single video stream including the first image data in the second transmission mode, and
wherein the processing unit processes the base video stream and the predetermined number of additional video streams so as to acquire the first image data and the second image data in the first transmission mode, and processes the single video stream so as to acquire the first image data in the second transmission mode.
18 . The image data reception device according to claim 13 ,
wherein the reception unit receives a base video stream including first image data and a predetermined number of additional video streams including second image data used along with the first image data in the first transmission mode, and receives a base video stream including first image data and a predetermined number of additional video streams substantially including image data which is the same as the first image data in the second transmission mode, and
wherein the processing unit processes the base video stream and the predetermined number of additional video streams so as to acquire the first image data and the second image data in the first transmission mode, and processes the base video stream so as to acquire the first image data without performing a process of acquiring the second image data from the predetermined number of additional video streams in the second transmission mode.
19 . The image data reception device according to claim 13 ,
wherein the reception unit receives a container of a predetermined format including the video stream,
wherein identification information for identifying whether to be in the first transmission mode or in the second transmission mode is inserted into a layer of the container in the container, and
wherein the transmission mode identifying unit identifies the first transmission mode in which a plurality of image data items are transmitted and the second transmission mode in which a single image data item is transmitted on the basis of auxiliary information which is inserted into the received video stream and identification information which is inserted into the layer of the container.
20 . The image data reception device according to claim 13 ,
wherein the first transmission mode is a stereoscopic image transmission mode in which base view image data and non-base view image data used along with the base view image data are transmitted so as to display a stereoscopic image, and the second transmission mode is a two-dimensional image transmission mode in which two-dimensional image data is transmitted.