Abstract:
Method and device for synchronizing reference image and supplementary image in real-time broadcast program. The present invention provides a synchronization method for: calculating a time difference between a current frame of a reference image and a reference time stamp on the basis of the reference time stamp, which is contained in a program level descriptor and indicates a start time of a frame regarding a reference image; and adjusting synchronization between the frame regarding the reference image and a frame regarding a supplementary image by using the time difference. Since synchronous time information is signaled together with a stream delivered in real time, synchronization between a stored supplementary image and a reference image transmitted in real time is enabled even though a first PMT of a time when a stereoscopic video service is started is not received or a packet error is generated. Thus, the invention can provide a stable stereoscopic image service
Abstract:
The present invention relates to a method of synchronizing a reference image with an additional image of a real-time broadcasting program, the method comprising the steps of: generating at least one frame having a predetermined identifier for providing notice of the start time of the reference image to a receiver in advance; and transmitting at least one frame having the predetermined identifier to the receiver. Alternatively, the method of synchronizing a reference image with an additional image of a real-time broadcasting program comprises the steps of: generating signaling information containing additional image interlocking information at a transmission side in order to prepare for the additional image interlocked with the reference image of the real-time broadcasting program at a reception side in advance; and providing the signaling information to the receiver. Therefore, it is possible to accurately and effectively perform the synchronization of a 3D reference image of the real-time broadcasting program with a 3D additional image stored in the receiver or a streamed 3D additional image.
Abstract:
Die vorliegende Erfindung bezieht sich auf ein Verfahren zum Synchronisieren eines Referenzbilds mit einem Zusatzbild eines Echtzeit-Rundfunkprogramms, wobei das Verfahren die folgenden Schritte umfasst: Erzeugen wenigstens eines Einzelbilds mit einer vorgegebenen Kennung, um für einen Empfänger im Voraus eine Mitteilung über die Anfangszeit des Referenzbilds bereitzustellen; und Übertragen wenigstens eines Einzelbilds mit der vorgegebenen Kennung an den Empfänger. Alternativ umfasst das Verfahren zum Synchronisieren eines Referenzbilds mit einem Zusatzbild eines Echtzeit-Rundfunkprogramms die folgenden Schritte: Erzeugen von Signalisierungsinformationen, die Zusatzbildverriegelungsinformationen enthalten, auf einer Sendeseite, um auf der Empfangsseite im Voraus auf das mit dem Referenzbild verriegelte Zusatzbild des Echtzeit-Rundfunkprogramms vorzubereiten; und Bereitstellen der Signalisierungsinformationen für den Empfänger. Somit ist es möglich, die Synchronisation eines 3D-Referenzbilds des Echtzeit-Rundfunkprogramms mit einem in dem Empfänger gespeicherten 3D-Zusatzbild oder mit einem gestreamten 3D-Zusatzbild genau und effizient auszuführen.
Abstract:
Disclosed are a transmission device and method, and a reception device and method, for a program-linked stereoscopic broadcasting service. The transmission device relates to a transmission device for a program-linked stereoscopic broadcasting service, and comprises: a real time stream encoder for encoding a reference image and generating a real time stream; a non-real-time (NRT) stream encoder for generating an NRT stream on the basis of an additional image; an image synchronization information generator for generating a stream of a service signaling and image synchronization information - service signaling and image synchronization information include event information table and program map table - for synchronization of the reference image and the additional image, on the basis of 3D contents synchronized information; and a re-mutiplexer for generating a program-linked stereoscopic broadcasting stream by multiplexing the real time stream, the NRT stream, the service signaling, and the image synchronization information stream.
Abstract:
Provided are a method and a device for transmitting a broadcasting service, for signaling non-real-time (NRT) 3D broadcasting contents. The device for transmitting a broadcasting service comprises: an NRT contents encoder for encoding stereoscopic image contents including a reference image and an additional image, and generating an NRT stream; an NRT signaling information encoder for generating an NRT signaling information including at least one of a service map table (SMT) corresponding to the contents, and a non-real-time-information table (NRT-IT); and a multiplex unit for multiplexing the NRT stream and the NRT signaling information, and transmitting to a reception device. Thus, the present invention enables the provision of contents even when the reference image and the additional image are encoded in a dual stream format.
Abstract:
According to the present invention, a transmission apparatus and method and a reception method and apparatus for providing a 3D service are disclosed. The transmission method for providing the 3D service while making a reference image transmitted in real-time interwork with an additional image transmitted separately from the reference image includes a real-time reference image stream generating step of generating a real-time reference image stream based on the reference image and transmitting the generated real-time reference image stream to a receiving side in real-time and an additional image transmitting step of transmitting the additional image providing the 3D service in interworking with the reference image to the receiving side separately from the reference image stream, wherein the real-time reference image stream includes a linkage information, which is information relating to the additional image to be interworking with the reference image and synchronization information for synchronization with the reference image and the additional image and content.
Abstract:
Provided are a method and apparatus of synchronizing a reference picture and an additional picture of a real-time broadcasting program. The method includes: receiving an MPEG-2 transport stream (MPEG-2 TS) including a program level descriptor and an elementary stream (ES) level descriptor from a picture transmitting apparatus; loading an additional picture corresponding to a reference picture included in the elementary stream (ES) level descriptor from a memory provided in the picture receiving apparatus, based on file information regarding the reference picture; calculating a time difference between a current frame of the reference picture and a reference time stamp, based on the reference time stamp which is included in the program level descriptor and indicates a start time of a frame regarding the reference picture; synchronizing the frame regarding the reference picture and a frame regarding the additional picture by using the time difference; and providing a stereoscopic picture based on the synchronized frames regarding the reference picture and the additional picture. A stereoscopic video service can be stably provided.
Abstract:
Disclosed are an apparatus and a method for transmitting a broadcasting service capable of signaling non-real-time 3D broadcasting content. An apparatus for transmitting a broadcasting service includes: a non-real-time (NRT) content encoder encoding stereoscopic image content including a reference image and an additional image to generate an NRT stream; an NRT signaling information encoder generating NRT signaling information including at least one of a service map table (SMT) and a non-real-time-information table (NRT-IT) that correspond to the content; and a multiplexer multiplexing the NRT stream and the NRT signaling information and transmitting the multiplexed NRT stream and NRT signaling information to a receiving apparatus. Therefore, content can be provided even when the reference image and the additional image are encoded into the single file format in the dual stream type.
Abstract:
Disclosed herein are a transmission apparatus and method and a reception apparatus and method for a program associated stereoscopic broadcasting service. The transmission apparatus includes: a real time stream encoder generating a real time stream by encoding a reference image; a non-real time (NRT) stream encoder generating an NRT stream based on an additional image; an image synchronization information generator generating a service signaling and image synchronization information (including an event information table (EIT) and a program map table (PMT)) stream for synchronizing the reference image and the additional image with each other based on 3D content synchronization information; and a re-multiplexer generating a program associated stereoscopic broadcasting stream by multiplexing the real time stream, the non-real time stream, and the service signaling and image synchronizing information stream.