Patent application number | Description | Published |
20090197527 | SERVICE RELAY DEVICE, SERVICE RECEIVER FOR RECEIVING THE RELAYED SERVICE SIGNAL, AND METHODS THEREOF - A service relay device is provided. The service relay device includes a receiving unit which receives a service signal, and a service processing unit which changes information regarding an order of changing frequency channels included in the received service signal, using replacement frequency channels, and broadcasts the service signal. The service processing unit includes a detecting unit which detects the information regarding the order of changing frequency channels, a storage unit which stores information regarding replacement frequency channels, an information processing unit which replaces the information regarding the order of changing frequency channels, using the replacement frequency channels stored in the storage unit, and a relay unit which broadcasts a service signal. As a result, service signals are provided stably even in the fringe area. | 08-06-2009 |
20090296624 | METHOD AND APPARATUS FOR TRANSMITTING BROADCAST, METHOD AND APPARATUS FOR RECEIVING BROADCAST - Provided are a method and apparatus for transporting a broadcast and a method and apparatus for receiving a broadcast. In the method of transporting a broadcast service for mobile communications, the method includes generating an encapsulation packet including configuration information adaptive to application data that is to be transmitted and the application data; generating transport packets having data regarding the encapsulation packet by dividing the encapsulation packet into predetermined-sized packets, where the transport packets include information regarding the structures of the transport packets; and generating service configuration information including information set about a channel having the transport packets, and including the service configuration information in a service information channel at a predetermined location from among at least one transport channel on a transport stream. Accordingly, it is possible to efficiently use a data region and increase the speed of data transmission. | 12-03-2009 |
20100002802 | OFDM TRANSMITTING AND RECEIVING SYSTEMS AND METHODS THEREOF - An orthogonal frequency division multiplexing (OFDM) transmission system is provided which includes a data processing unit which generates a transmission signal using a plurality of tones including a reserved tone, a storage unit which stores Peak Reduction Kernel information according to the type of data symbol, and a compensation unit which retrieves the Peak Reduction Kernel information according to the type of data symbol from the storage unit and causes the retrieved information to be carried by the reserved tone included in the transmission signal. Therefore, a Peak-to-Average Power Ratio (PAPR) can be efficiently compensated. | 01-07-2010 |
20100118994 | DIGITAL TRANSMISSION SYSTEM FOR TRANSMITTING ADDITIONAL DATA AND METHOD THEREOF - A digital transmission system is disclosed. The system includes a transmission signal generation unit which generates a transmission signal in which data to be transmitted is carried by a carrier wave, and an additional data process unit which processes so that a low power signal to represent additional data is carried by the carrier wave. The system is embodied as an orthogonal frequency division multiplexing (OFDM) system such as a digital video broadcast-video (DVB-V), and a single carrier system such as a vestigial sideband modulation (VSB). Accordingly, additional data are efficiently transmitted without degrading transmission quality of main data. | 05-13-2010 |
20100296001 | DIGITAL BROADCAST TRANSMITTER, DIGITAL BROADCAST RECEIVER, AND METHODS FOR CONFIGURING AND PROCESSING STREAMS THEREOF - A method for processing a stream of a digital broadcast receiver is provided. The method which processes a stream that is divided into a first area allocated to first mobile data and a second area allocated to normal data, includes: receiving a transport stream including new mobile data in at least a part of the second area separately from the first mobile data, demodulating the transport stream, equalizing the demodulated transport stream, and decoding at least one of the first mobile data and the new mobile data from the equalized transport stream. Accordingly, mobile data services may be provided in various ways. | 11-25-2010 |
20100296424 | DIGITAL BROADCAST TRANSMITTER, DIGITAL BROADCAST RECEIVER, AND METHODS FOR CONFIGURING AND PROCESSING STREAMS THEREOF - A method for processing a stream of a digital broadcast receiver is provided. The method which processes a stream that is divided into a first area allocated to first mobile data and a second area allocated to normal data, includes: receiving a transport stream including second mobile data in at least a part of the second area separately from the first mobile data, demodulating the transport stream, equalizing the demodulated transport stream, and decoding at least one of the first mobile data and the second mobile data from the equalized transport stream. Accordingly, mobile data services may be provided in various ways. | 11-25-2010 |
20100296506 | DIGITAL BROADCAST TRANSMITTER, DIGITAL BROADCAST RECEIVER, AND METHODS FOR CONFIGURING AND PROCESSING STREAMS THEREOF - A method for processing a stream of a digital broadcast receiver is provided. The method which processes a stream that is divided into a first area allocated to first mobile data and a second area allocated to normal data, includes: receiving a transport stream including new mobile data in at least a part of the second area separately from the first mobile data, demodulating the transport stream, equalizing the demodulated transport stream, and decoding at least one of the first mobile data and the new mobile data from the equalized transport stream. Accordingly, mobile data services may be provided in various ways. | 11-25-2010 |
20110267209 | TRELLIS ENCODER AND TRELLIS ENCODING DEVICE HAVING THE SAME - A trellis encoding device includes a plurality of trellis encoders to perform trellis-encoding of a transport stream into which a supplementary reference signal (SRS) has been inserted, and performs a memory reset in a region that precedes an SRS; and a parity compensation unit to compensate for parities of the transport stream in accordance with values stored in memories included in the trellis encoders. The plurality of trellis encoders may be implemented in diverse types. The trellis encoding device can perform a memory reset selectively using the stored value of the memory and the inverted value thereof, or selectively using the stored value of the memory and a fixed value. By properly resetting the memory in processing the transport stream into which the SRS has been inserted, DC offset can be reduced. | 11-03-2011 |
20120063407 | DIGITAL BROADCASTING TRANSMITTER, DIGITAL BROADCASTING RECEIVER, AND METHODS FOR CONFIGURING AND PROCESSING A STREAM FOR SAME - The method for transporting a digital broadcast stream includes: receiving a transport stream, including mobile broadcast data that is placed in at least a part of a normal data area allocated to normal data and signaling data that includes an FIC chunk header with a variable length; decoding the signaling data; and decoding the mobile data using the decoded signaling data. | 03-15-2012 |
20120236922 | DIGITAL BROADCASTING TRANSMITTER, DIGITAL BROADCASTING RECEIVER, AND METHOD FOR COMPOSING AND PROCESSING STREAMS THEREOF - Disclosed is a method of processing a stream of a digital broadcasting receiver. The method comprises: arranging at least one of new mobile data and known data in at least a portion of an existing mobile data region and in at least a portion of a normal data region, in a stream which includes the normal data region and the existing mobile data region; and composing a transmission stream where at least one of the new mobile data and the known data is arranged, and wherein the arranging combines a block of data arranged in the existing mobile data region and a block of the new mobile data in the stream, and performs serially concatenated convolution code (SCCC) coding on the combined blocks. | 09-20-2012 |
20140334562 | OFDM TRANSMITTING AND RECEIVING SYSTEMS AND METHODS THEREOF - An orthogonal frequency division multiplexing (OFDM) transmission system is provided which includes a data processing unit which generates a transmission signal using a plurality of tones including a reserved tone, a storage unit which stores Peak Reduction Kernel information according to the type of data symbol, and a compensation unit which retrieves the Peak Reduction Kernel information according to the type of data symbol from the storage unit and causes the retrieved information to be carried by the reserved tone included in the transmission signal. Therefore, a Peak-to-Average Power Ratio (PAPR) can be efficiently compensated. | 11-13-2014 |