Patent application number | Description | Published |
20090097648 | CONTENT SERVICE PROVIDING METHOD AND AUTHENTICATION METHOD BETWEEN DEVICES USING BROADCAST ENCRYPTION, DISPLAY DEVICE, AND RESOURCE-CONSTRAINED DEVICE - A method of providing a content service and an authentication method between devices using broadcast encryption, a display device, and a resource-constrained device are provided. A method of providing a content service, the method including: transmitting, to a display device, an identification (ID) of a resource-constrained device via the resource-constrained device; receiving encryption information from the display device via the resource-constrained device; and decrypting the encryption information by using a stored secret key set via the resource-constrained device. | 04-16-2009 |
20110150217 | METHOD AND APPARATUS FOR PROVIDING VIDEO CONTENT, AND METHOD AND APPARATUS REPRODUCING VIDEO CONTENT - A method of providing video content, the method comprising generating a basement layer and a plurality of enhancement layers by performing scalable video coding on a piece of video content; encrypting the basement layer and the plurality of enhancement layers by using different encryption keys, respectively; and transmitting one of the encryption keys to the second device, together with a video content package that comprises the encrypted basement layer and enhancement layers. The encryption keys include a random encryption key generated randomly and chain encryption keys generated sequentially by performing a Hash function on the random encryption key at least one time. | 06-23-2011 |
20120269207 | RECEIVER FOR RECEIVING AND DISPLAYING A PLURALITY OF STREAMS THROUGH SEPARATE ROUTES, METHOD FOR PROCESSING THE PLURALITY OF STREAMS AND TRANSMITTING METHOD THEREOF - A receiver is provided. The receiver includes a first receiving unit which receives a first stream over a broadcasting network; a second receiving unit which receives a second stream over a communication network; a data processing unit which detects aggregation information from at least one of the first and second streams, and which assembles and processes data of the first stream and data of the second stream according to the aggregation information; and an output unit which outputs the data processed by the data processing unit. Thus, relevant data can be assembled and processed easily. | 10-25-2012 |
20130147914 | METHOD FOR PROVIDING FRAGMENT-BASED MULTIMEDIA STREAMING SERVICE AND DEVICE FOR SAME, AND METHOD FOR RECEIVING FRAGMENT-BASED MULTIMEDIA STREAMING SERVICE AND DEVICE FOR SAME - Provided are method and apparatus for transmitting and receiving a multimedia streaming service via a network. The method of providing a multimedia streaming service includes: dividing encoded data of a video including at least one of a two-dimensional (2D) video and a three-dimensional (3D) video into fragments; determining at least one of 3D signaling information for each fragment and relationship information to be used when the video refers to other videos; and continuously transmitting the fragments including the property information regarding the fragments and encoded video data. | 06-13-2013 |
20130258054 | TRANSMITTER AND RECEIVER FOR TRANSMITTING AND RECEIVING MULTIMEDIA CONTENT, AND REPRODUCTION METHOD THEREFOR - The present invention comprises: a receiving unit for receiving, through different paths, a first signal including a left-side image and a first synchronization information item, and a second signal including a right-side image and a second synchronization information item; and a signal processing unit for synchronizing and reproducing the left-side image and the right-side image using the first synchronization information item and the second synchronization information item. At least one information item, from among a content start information item, a timestamp difference between a first data item and a second data item, a frame index, a time code information item, a UTC information item, and a frame count information item, can be used as the first and second synchronization information items. Accordingly, different data can be effectively synchronized. | 10-03-2013 |
20130271568 | TRANSMITTING SYSTEM AND RECEIVING APPARATUS FOR PROVIDING HYBRID SERVICE, AND SERVICE PROVIDING METHOD THEREOF - A receiving apparatus includes a first receiving unit that receives a first signal comprising an information descriptor to describe service characteristics, reference data, and additional data reference information through a RF communication network; a second receiving unit that can be connected to an IP network; a demux unit that detects the information descriptor from the first signal; a first signal processing unit that processes the reference data; a control unit that, if it is determined as a hybrid service depending on the information descriptor, controls the second receiving unit to access a source apparatus corresponding to the additional data reference information; a second signal process unit that, if a second signal comprising additional data is received through the IP communication network, processes the additional data; and an output unit that synchronizes and outputs the reference data and the additional data. | 10-17-2013 |
20130271657 | RECEIVING APPARATUS FOR PROVIDING HYBRID SERVICE, AND HYBRID SERVICE PROVIDING METHOD THEREOF - A receiving apparatus includes a first receiving unit that receives signaling information and a first signal comprising reference data through a radio frequency broadcast network; a control unit that detects a plurality of additional data source information from the signaling information; a second receiving unit that accesses an internet protocol communication network, and receives a second signal comprising additional data from a source apparatus corresponding to each of the plurality of additional data source information; a storage unit that stores the reference data contained in the first signal and the additional data contained in the second signal; and an output unit that processes, synchronizes and outputs each of the reference data and additional data. | 10-17-2013 |
20130293677 | RECEPTION DEVICE FOR RECEIVING A PLURALITY OF REAL-TIME TRANSFER STREAMS, TRANSMISSION DEVICE FOR TRANSMITTING SAME, AND METHOD FOR PLAYING MULTIMEDIA CONTENT - A reception device is provided. The reception device includes: a first receiver receiving a first real-time transport stream via a broadcast network; a second receiver receiving a second real-time transport stream via a communication network; a delay processor delaying at least one of the first and second real-time transport streams for synchronization; a first detector detecting first data from the first real-time transport stream; a second detector detecting second data from a second real-time transport stream; a signal processor combining the first data and the second data so as to constitute multimedia content; and a playing unit playing the multimedia content. | 11-07-2013 |
20130307927 | CONTENT RECEIVING DEVICE, DISPLAY DEVICE, AND METHOD THEREOF - A display device is provided, which includes a first communication interface which receives a partial amount of contents of a plurality of contents which partial amount of contents have been synchronized with each other from a content receiving device, a second communication interface which receives a remaining amount of contents of the plurality of contents from a first communication network that is different from a second communication network from which the content receiving device receives the partial amount of contents, a signal processor which performs signal processing such that the partial amount of contents received via the first communication interface and the remaining amount of contents received via the second communication interface are displayable in synchronization with each other, and an output device which displays the plurality of signal-processed content. | 11-21-2013 |
20140176795 | RECEIVING APPARATUS AND RECEIVING METHOD THEREOF - A receiving apparatus is disclosed. The receiving apparatus comprises: a first receiving unit receiving first multimedia data, to which a first time code is added by frame, through a broadcast network; a second receiving unit receiving second multimedia data, to which a second time code is added by frame, through an IP network; a first signal processor for signal processing the first multimedia data and generating a first video frame; a second signal processor for signal processing the second multimedia data and generating a second video frame; a controller for comparing the first time code of the first multimedia data with the second time code of the second multimedia data, and calculating a difference in time stamp information on video frames having matching time codes; and a rendering unit for using the difference in time stamp information to read respective video frames that are synchronized from among the generated first video frame and the second video frame, and performing rendering. | 06-26-2014 |
20140204962 | TRANSMITTING DEVICE, RECEIVING DEVICE, AND TRANSCEIVING METHOD THEREOF - A transmitting device which transmits a plurality of streams is provided. The transmitting device comprises: a first multimedia data consisting of multimedia contents; a first synchronization information for synchronization of a second multimedia data consisting of multimedia contents; a first transmitting data including a first signaling data for the first multimedia data and a second signaling data for the second multimedia data, a data generating unit generating a second transmitting data including a second synchronization information for synchronization of the second multimedia data and the first multimedia data, a first transmitting unit transmitting the first transmitting data supplied from the data generating unit to a receiving device through a broadcasting network, and a second transmitting unit transmitting the second transmitting data supplied from the data generating unit to the receiving device through an IP network. | 07-24-2014 |
20140237536 | METHOD OF DISPLAYING CONTENTS, METHOD OF SYNCHRONIZING CONTENTS, AND METHOD AND DEVICE FOR DISPLAYING BROADCAST CONTENTS - A method of displaying contents, a method of synchronizing contents, and a method and device for displaying contents are provided. The method includes: receiving initial scene configuration information of a content written in a markup language from an external device, structuralizing the initial scene configuration information, rendering the content according to the structuralized initial scene configuration information, receiving additional scene configuration information of the content from the external device, updating the structuralized initial scene configuration information based on the received additional scene configuration information, and rendering the content according to the updated initial scene configuration information. | 08-21-2014 |
Patent application number | Description | Published |
20100055353 | COMPOSITION COMPRISING CURABLE DICHROIC DYE FOR FORMING OPTICAL COMPONENT AND AN OPTICAL COMPONENT PRERARED USING THE SAME - The present invention relates to a composition comprising a curable dichroic dye and a curable liquid crystal compound, which are used to prepare an optical component that is vertically oriented to give a narrow viewing angle, to form an optical component, and an optical component comprising an optical component layer prepared using the same. There is provided a composition for forming an optical component comprising 0.1-90 parts by weight of a dichroic dye and 10-98.85 parts by weight of a curable liquid crystal compound, and there is also provided an optical component comprising an optical component layer in which a curable liquid crystal compound and a curable dichroic dye are vertically oriented. The optical component comprising an optical component layer in which a curable dichroic dye and a curable liquid crystal compound are vertically oriented and which is made of the composition comprising a curable dichroic dye and a curable liquid crystal compound for forming an optical component has excellent physical properties such as heat resistance, durability to high temperature and high moisture, vertical orientation and dichroic ratio, and also adjust a narrow viewing angle. The durability in the high temperature and high moisture is due to the cross linking shape of the optical component layer. | 03-04-2010 |
20100068419 | RETARDATION FILM, A METHOD FOR PREPARING RETARDATION FILM AND POLARIZER COMPRISING THE RETARDATION FILM - There is provided a retardation film capable of adjusting an angle between a proceeding direction of a film and an optical axis of liquid crystal by employing an alignment layer formed of polymers including norbornene and improving thermal stability and photoreaction rate, a method for preparing the retardation film and a polarizer comprising the retardation film. The retardation film includes a substrate, an alignment layer formed on the substrate and made of polymers including norbornene, and an alignment layer fixing layer formed on the alignment layer and made of liquid crystal materials; the method for preparing a retardation film includes: forming a polymer layer by coating a substrate with a polymer solution including norbornene and drying the polymer solution, forming an alignment layer by irradiating the copolymer layer with linearly polarized ultraviolet rays in a predetermined direction relative to a proceeding direction of a film to give an orientation to the copolymer layer, forming a liquid crystal layer on the alignment layer by coating the alignment layer with a nematic liquid crystal solution and drying the nematic liquid crystal solution, and fixing the orientation of the liquid crystal layer by curing the liquid crystal layer; and the polarizer includes the retardation film and a polarizer film, both of which are stacked with each other. The retardation film has improved thermal stability and light reaction speed, and the retardation film whose optical axis has a desired orientation angle relative to a proceeding direction of the retardation film may be easily prepared through the irradiation of polarized ultraviolet rays. | 03-18-2010 |