Abstract: A host apparatus and a method to share favorite image reading apparatuses thereof are provided. The method to share favorite image reading apparatuses of a host apparatus includes registering at least one of searched image reading apparatuses to a list of favorite image reading apparatuses; selecting at least one of the registered favorite image reading apparatuses to be shared; activating a sharing function to share the selected favorite image reading apparatus; transmitting the list of favorite image reading apparatuses to or receiving a list of favorite image reading apparatuses from another host apparatus of which the sharing function is activated. Therefore, a universal driver may share a list of favorite image reading apparatuses.

Abstract: A method is provided for channel encoding in a communication system using a Low-Density Parity Check (LDPC) code. The method includes grouping information bits into a plurality of groups; determining an order of the plurality of groups to be shortened, based on whether a specific region in a frame is to be LDPC-encoded, where the specific region has a different ratio of a number of bits to be shortened to a number of bits to be punctured; determining a length of an information word to be obtained by shortening the plurality of groups; shortening the plurality of groups on a group basis in the determined order based on the determined length of the information word; and LDPC-encoding a shortened information word.

Abstract: Disclosed is a method and apparatus for transmitting/receiving control information in a system in which one or more Radio Frequencies (RFs) are used to carry multiple services through a frame constituted by time resources or time-frequency resources. Control information regarding frame configuration information is not transmitted over a separate control channel but over a data channel through which to transmit primary service traffic among all service traffic, and each non-primary service traffic other than the primary service traffic includes control information for a primary service. Thus, even when a receiver changes the current service to a target service, control information necessary to detect the location of the target service in a frame and demodulate the target service can be acquired, and thus a service change can be made without reading a separate control channel.

Abstract: A host device connected to image scanning devices and a method of controlling the host device is provided. The host device includes an interface connected to a plurality of image scanning devices, a storage storing an integrated driver that supports a plurality of drivers corresponding to a plurality of applications, and a controller controlling the integrated driver that supports the plurality of drivers to execute the driver corresponding to the application if the application is executed in the host device.

Abstract: A method for transmitting encoded data, which improves a diversity effect in a communication system, including generating parity bits for an information word, generating a codeword by encoding an information word using the generated parity bits, puncturing some of the parity bits of the codeword, transmitting a frame including the information word, and generating additional parity bits for decoding the information word and transmitting the additional parity bits in one or more other frames.

Abstract: A method for processing a stream of a digital broadcast transmitter, the digital broadcast transmitter, a method of processing a stream of a digital broadcast receiver, and the digital broadcast receiver are provided. The method includes: configuring a stream including a slot to which mobile data is allocated; and encoding and interleaving the configured stream and outputting the encoded and interleaved stream. Each slot of the stream includes signaling data, and the signaling data includes a slot indicator indicating a type of a slot, and may include at least one of a backward training indicator and a forward training indicator according to a value of the slot indicator. Accordingly, information on an adjacent slot is efficiently used.

Abstract: A method is provided for channel encoding in a communication system using a Low-Density Parity Check (LDPC) code. The method includes grouping information bits into a plurality of groups; determining an order of the plurality of groups to be shortened, based on a ratio of a number of bits to be shortened to a number of bits to be punctured; determining a length of an information word to be obtained by shortening the plurality of groups; shortening the plurality of groups on a group basis in the determined order based on the determined length of the information word; and LDPC-encoding a shortened information word.

Abstract: Apparatus and method for transmitting and receiving a frame including control information in a broadcasting system are provided. A frame for a broadcast service is generated including at least one Physical Layer Pipe (PLP) and indication information for indicating a change/no-change of control information for the broadcast service in the next frame. The indication information includes information on a position in which the control information will change.

Abstract: Apparatus and method for receiving a frame including control information in a broadcasting system are provided. A frame for a broadcast service is received and includes at least one Physical Layer Pipe (PLP) and indication information for indicating a change/no-change of control information for the broadcast service in the next frame. Indication information, which includes information on a position in which the control information will change, is extracted from the frame and used to determine the position in which the control information will change.

Abstract: Disclosed is a method for processing a stream of a digital broadcast transmitter. The method includes forming a stream containing normal data and mobile/handheld (M/H data), and encoding and interleaving the stream and outputting and transmitting the encoded and interleaved stream, wherein the forming of the stream includes forming the stream such that a predetermined number of audio packets of the normal data are disposed per predetermined time cycle.

Abstract: An apparatus and method for transmitting and receiving a signal and a subcarrier allocation structure therefor in a multi-user multi-antenna communication system are provided, in which a transmitter calculates receive filters for each of a plurality of receivers or for a plurality of antennas in a receiver, determines the index of a vector having a correlation with the calculated receive filters in a preset codebook vector to be a receive filter index, and transmits the receive filter index to the receiver.

Abstract: An apparatus and method are provided for indicating an error of a transport packet in an audio and video communication system. The method includes receiving a frame including a transport packet, attempting Forward Error Correction (FEC) on the frame, and setting a value of an error indicating field in the transport packet according to a result of the FEC. The error indicating field includes at least one of a first flag indicating a presence or absence of an error in the transport packet, a second flag indicating a success or failure of the FEC, and a third flag indicating detection or non-detection of a Cyclic Redundancy Check (CRC).

Abstract: Disclosed is a method and an apparatus for transmitting and receiving control information for receiving a service in a broadcast communication system. The method includes inserting first control information for receiving at least one different service at a next frame in each of multiple service data pieces of a current frame and transmitting a frame including the first control information, making it possible to efficiently transmit and receive a frame, which includes multiple services configured through a combination of one or more radio frequencies, and thereby enabling rapid receiving of a switched service in the case of service switching.

Abstract: A method is provided for transmitting in-band signaling information in a wireless broadcasting system that transmits broadcast service data through a plurality of data Physical Layer Pipes (PLPs) constituting a frame. Non-PLP signaling information is included in a data PLP for a particular broadcast service and the data PLP is transmitted through a current frame, when no data PLP for the particular broadcast service is transmitted in at least one frame to be transmitted within a maximum schedulable period NMAX from a time the current frame is transmitted. The non-PLP signaling information indicates that no data PLP for the particular broadcast service is transmitted within the maximum schedulable period.

Abstract: A method and an apparatus are provided for decoding a channel in a communication system using a LDPC code. A shortening pattern and a puncturing pattern are determined based on a received signal. A value of a shortened bit is set to 0 according to the determined shortening pattern, erasures are set according to the determined puncturing pattern, and LDPC decoding is performed, when bits exist which have been used to perform shortening or puncturing. Determining the shortening pattern and the puncturing pattern includes setting a predetermined ratio of the number of punctured bits to the number of shortened bits.

Abstract: A method for controlling the host apparatus includes searching for at least one image reading apparatus being connected to the host apparatus; displaying a list of image reading apparatuses using the first information of the searched at least one image reading apparatus; selecting one of the at least image reading apparatus from the displayed list of image reading apparatuses; displaying a user interface (UI) for selecting a scanning option which includes the second information of the selected image reading apparatus using the second information corresponding to the selected image reading apparatus; and controlling the selected image reading apparatus to perform a scanning operation according to the scanning option which is input through the UI for selecting a scanning option. Accordingly, a plurality of image reading apparatuses are controlled by a single universal driver without the need of installing driver programs for each of the image reading apparatuses.

Abstract: A method and system for transmitting scanned data from a network scanner to a host are provided, in which a port is set in the host to receive the scanned data when the host and the scanner are connected via a network, the host is accessed from the scanner to detect port information regarding the set port, and the scanned data is transmitted from the scanner to the host via the port corresponding to the detected port information. Therefore, the inconvenience of having to search a scanner from a host and then receiving scanned data when using a network scanner is eliminated and the scanned data can be directly transmitted from the network scanner to the host.

Abstract: An encoding/decoding apparatus and method using a low-density parity-check code (LDPC code) is disclosed. Basic column group information, serving as a set of information regarding positions of rows with weight 1, is extracted from a reference column in each column group of a predetermined parity-check matrix. Column group information transforms the positions of rows with weight 1 into positions whose lengths are within a required parity length. A parity-check matrix is generated according to the generated column group information. Data is encoded or decoded based on the generated parity-check matrix.

Abstract: A scan system is provided. The system includes a server device having at least one scanner driver and a user terminal device which accesses the server device and receives a scanner list, and if a scanner is selected from the scanner list, transfers scanner information about the selected scanner to the server device. The server device may control the scanner to process a scan job, by using a scanner driver corresponding to the scanner information transferred from the user terminal device. Accordingly, the user can use scan service easily by using one scan application, without having to install scan application for each of the scanners at the user terminal device.

Abstract: A method and apparatus are provided for generating a parity check matrix used to generate a linear block code in a communication system. The method includes determining a basic parameter of a second parity check matrix satisfying a rule predetermined with respect to a given first parity check matrix, generating a submatrix corresponding to a parity part of the second parity check matrix, using the basic parameter; and generating a submatrix corresponding to an information word part of the second parity check matrix, using the first parity check matrix and the basic parameter.