摘要:
Provided are a method of tuning a coding rate and applying an unequal error protection for an adaptive video transmission, and a video transmission/reception apparatus using the method. The video transmission apparatus may include: a coding rate tuner to predict, as a channel capacity of a subsequent channel interval, an estimated channel capacity value fed back from the video reception apparatus, and to tune video and channel coding rates within the predicted channel capacity; a video encoder to perform video encoding of video frames at the tuned video coding rate, and to generate a video packet; and a forward error correction (FEC) encoder to apply the unequal error protection based on a length of the video packet and a type of the video frames included in the video packet, and to perform channel encoding of the video packet at the tuned channel coding rate to generate a bitstream.
摘要:
The membrane-electrode assembly for a fuel cell according to an embodiment includes an anode and a cathode facing each other, and a polymer electrolyte membrane interposed therebetween. At least one of the anode and cathode includes an electrode substrate, a microporous layer disposed on the electrode substrate, and a catalyst layer disposed on the microporous layer. The catalyst layer includes a catalyst and a binder resin, and the binder resin has an average chain length ranging from about 5 to about 30 nm. According to the embodiment, a membrane-electrode assembly can be easily prepared without firing and can be prevented from distorting, improving cell characteristics.
摘要:
Provided is a personalized data broadcasting service, more particularly, a metadata scheme for a personalized data broadcasting service, a data broadcasting service providing method using the metadata scheme, and a system thereof. A metadata forming method of the present research includes the steps of: a) generating an interactive content service (InteractiveContentService) element which describes whether a data broadcasting is a uni-directional service or a bi-directional service; b) generating a rendering style (RenderingStyle) element which describes properties of the data broadcasting displayed on a screen of a user; c) generating an update cycle (UpdateCycle) element which describes a content update period of the data broadcasting; and d) generating a package, an item or a component on the data broadcasting service information including the three elements generated above.
摘要:
Provided is a Forward Error Correction (FEC) encoding method of a variable-length packet using a three-dimensional (3D) storage apparatus. In the FEC encoding method, an FEC coding may be performed to calculate a corresponding parity packet while an input data packet is imaginarily connected to the 3D storage apparatus having a predetermined storage width and data area height to be arranged, the calculated parity packet may be stored and arranged in a vertical direction and a depth direction of the 3D storage apparatus, and an expansion data packet including both information for restoration of a data packet and the data packet may be transmitted together with the parity packet.
摘要:
Provided are a content writing apparatus and a content playback apparatus. The content writing apparatus may regard, as a single media file, a plurality of Moving Picture Experts Group (MPEG)-2 Transport Streams (TSs), may form a scene in a scene descriptor, such as a BInary Format for Scene (BIFS) or a Lightweight Application Scene Representation (LASeR), and may record the formed scene and the plurality of MPEG-2 TSs, as a media file in an International Standards Organization (ISO) format. The content playback apparatus may extract a scene from the media file in the ISO format, and may play back the extracted scene.
摘要:
A remote gaze tracking apparatus and method for controlling an Internet Protocol Television (IPTV) are provided. An entire image including a facial region of a user may be acquired using a visible ray, the facial region may be detected from the acquired entire image, and a face width, a distance between eyes, and a distance between an eye and a screen may be acquired from the detected facial region. Additionally, an enlarged eye image corresponding to a face of the user may be acquired using at least one of the acquired face width, the acquired distance between the eyes, and the acquired distance between the eye and the screen, and an eye gaze of the user may be tracked using the acquired eye image.
摘要:
Disclosed herein are a system and a method for providing multimedia services capable of providing various types of multimedia contents and information sensed at multi-points to users at a high rate and in real time at the time of providing the multimedia contents and sense scene representation and sensory effects for multimedia contents corresponding to multimedia services through the multi-points according to service requests of the multimedia services that users want to receive, encode and transmit the sensed information for scene representation and sensory effects with binary representation according to the sensing, transmit device command data for the sensed scene representation and sensory effects, drive and control user devices according the device command data to provide the scene representation and the sensory effects for the multimedia contents to the users.
摘要:
An apparatus for authoring data in a communication system includes: an extraction unit configured to receive media corresponding to contents and extract contents information regarding the contents from the received media; a generation unit configured to generate a DMB ECG XML-based metadata comprising the extracted contents information; and a processing unit configured to visualize particulars of the DMB ECG XML-based metadata through a user interface and process the user interface so that the DMB ECG XML-based metadata is generated and edited on a template.
摘要:
A method for performing presentation with reference to structured information existing in an internal or external is defined. A scene presentation device may present a scene with reference to the structured information based on the defined method.
摘要:
Provided are a method and apparatus for storing and playing back an MPEG-2 TS based on an ISO-based media file format. The method includes: storing a target MPEG-2 TS in an mdat box of the ISO-based media file format; and dividing the MPEG-2 TS by samples through time information, location information, size information, and Program Map Table (PMT) related information for random access and describing the divided samples in an moov box of the ISO based media file format.