Abstract:
PURPOSE: A content providing device, a method, a content reproducing device, and a method for synchronizing left and right streams in a fixed and moved fusion type of a 3D TV are provided to perform demultiplexing restoration of synchronization information, thereby performing audio synchronization and video synchronization between timing models of a left image and a right image. CONSTITUTION: A content providing device generates synchronization information for coinciding reproduction time between access units of a left image and a right image(801). The content providing device transmits a main content stream of the left image and an additional content stream of the right image to a content reproducing device. The content providing device multiplexes the synchronization information by inserting the synchronization information to the main content stream or signaling information of the additional content stream(802). [Reference numerals] (801) Generating synchronization information; (802) Multiplexing synchronization information; (AA) Start; (BB) End
Abstract:
PURPOSE: A synchronization method for implementing a 3D service in ATSC-M/H is provided to adjust synchronism between a TS(transmission stream)-M stream and an M/H stream. CONSTITUTION: A TS inputted to a dual stream through a receiver is separated into a TS-M stream and a M/H stream through an inverse multiplexer. Each of timing models is analyzed to adjust synchronism between streams including two different timing models and to find reference information shared between the timing models. Synchronization between heterogeneous streams is performed based on PTS(Presentation Time Stamp) information generated through a wall-clock. A 3D image is formed through the synchronization by using the heterogeneous streams having the same time synchronism.
Abstract:
An apparatus to provide boundary information comprises: a boundary information generation unit to generate boundary information of an image which is information that can identify a switching time between a 2D image and a 3D image, based on a switching-mode of the 2D image and the 3D image; and a stream transmission unit to transmit a transmission stream including the boundary information to an image receiving apparatus.
Abstract:
Disclosed are a video reproduction apparatus for three-dimensional television (3DTV) and a processing method for the same. The video reproduction apparatus can determine the output time of a buffer which stores right-image stream and left-image stream for a 3D image, and can determine a buffer size or a buffer delay time by using the difference between the reception times of the right-image stream and the left-image stream. Furthermore, the video reproduction apparatus can correct a reference clock or a timestamp by using the difference between the reception times of the right-image stream and the left-image stream. [Reference numerals] (201) First buffer unit;(202) Second buffer unit;(203) Buffer control unit;(204) First decoding unit;(205) Second decoding unit;(206) Third buffer unit;(207) Image synchronization unit;(AA) Bit stream;(BB) Reference image;(CC) Synchronization information;(DD) Additional information
Abstract:
PURPOSE: An image compression standard determination method is provided to encode a low quality image by determining an image compression standard based on the resolution of the low compression standard. CONSTITUTION: An image compression standard determination apparatus encodes a high quality image(210). The image compression standard determination apparatus determines an image compression standard(220). The low quality image is encoded by the determined image compression standard in case the average power of quantization noise in the encoded low quality image is under than the average power of the quantization noise in the encoded high quality image(230,240). The image compression standard determination apparatus transmits streams for the encoded low quality image to a second channel(260).
Abstract:
3DTV 방송송신장치는기준영상을 SVC(Scalable Video Coding) 또는 SHVC(Scalable High efficiency Video Coding) 방식으로부호화하여기준영상의기본계층스트림과향상계층스트림을생성하고, 부가영상과상기부가영상의화질개선을위한화질개선정보데이터를각각부호화한후, 상기기준영상의기본계층스트림과향상계층스트림을각각기본계층채널과향상계층채널을통해전송하고, 상기부호화된부가영상및 상기부호화된화질개선정보데이터를상기기본계층채널또는상기향상계층채널을통해전송한다.