Patent application number | Description | Published |
20080279371 | METHODS OF ENCRYPTING AND DECRYPTING DATA AND BUS SYSTEM USING THE METHODS - Methods of encrypting and decrypting data, and a bus system using the methods are provided. The method of encrypting data includes: performing an operation on data that is to be transmitted through a bus with a key stream generated from a predetermined key so as to encrypt the data; transmitting the encrypted data to a predetermined module through the bus; and transmitting a synchronization signal that is logic high when the encrypted data is transmitted through the bus to the predetermined module. Therefore, an encryption speed is improved and encryption can be simply embodied so that security of data received from the bus can be improved. | 11-13-2008 |
20080285747 | ENCRYPTION-BASED SECURITY PROTECTION METHOD FOR PROCESSOR AND APPARATUS THEREOF - An encryption-based security protection method and apparatus are provided. The method includes generating a random key pattern table in order to allocate a plurality of random key patterns of original data to be transmitted; generating an address pattern table in order to allocate a plurality of address patterns of addresses in which the original data is stored; and generating a mapping table in order to map the plurality of random key patterns and the plurality of address patterns. The apparatus includes an address pattern table generation unit; a random key pattern table generation unit; a mapping table generation unit; and an internal memory unit which stores the address pattern table, the random key pattern table, and the mapping table. | 11-20-2008 |
20090109884 | METHOD AND APPARATUS FOR GENERATING ACKNOWLEDGEMENT FRAME - Provided are a method and an apparatus for generating an acknowledgement (ACK) frame. The method includes: receiving a data frame; first determining whether sub-frames included in the received data frame are coded in an unequal error protection (UEP) mode; and based on the determination of the first determining, generating the ACK frame including a first ACK field indicating reception of each of the sub-frames or second ACK field indicating reception of each first type bit and second type bit in the sub-frames. | 04-30-2009 |
20090129283 | METHOD AND APPARATUS FOR TRANSMITTING INFORMATION OF DEVICE IN WIRELESS PERSONAL AREA NETWORK - Provided is a method of transmitting information regarding a device in a wireless personal area network (WPAN). In the method, a probe request frame is received from one of devices belonging to the WPAN according to a common mode which is a physical layer (PHY) transmission mode being commonly supported by the devices, the probe request frame containing information requesting information regarding a PHY transmission mode supported by another specific device, a probe response frame containing the information regarding the PHY transmission mode supported by the specific device is generated, and then the probe response frame is transmitted to the device transmitting the probe request frame, according to the common mode. | 05-21-2009 |
20090129337 | METHOD AND APPARATUS FOR PERFORMING PICONET COORDINATOR HANDOVER IN WIRELESS PERSONAL AREA NETWORK - Provided are a method and an apparatus for performing a piconet coordinator (PNC) handover in a wireless personal area network (WPAN) in which devices using various PHY transmission modes coexist. A device that enters the WPAN transfers information about its PHY transmission mode to the PNC through an association request message so that a problem that conventional services are not provided to a user in the WPAN due to a difference in PHY transmission modes of the devices during the PNC handover can be solved. | 05-21-2009 |
20100027494 | WIRELESS NETWORK SYSTEM AND METHOD OF CONFIGURING THE SAME - Provided are a wireless network system and a method of configuring the same, more particularly, a wireless network system and a method of configuring the same, in which a wireless network station desiring to transmit or receive data in a high-frequency band notifies a wireless network coordinator of its carrier transmission method to enable the wireless network coordinator to efficiently manage a network. An apparatus for transmitting or receiving data includes: a request command generation unit which generates a request command to secure network resources required to transmit or receive data before actually transmitting or receiving the data over a network; and a communication unit which transmits the request command. | 02-04-2010 |
20100097967 | APPARATUS AND METHOD FOR TRANSMITTING PACKET - Provided are an apparatus and method for transmitting a packet. The apparatus and method indicate a policy with respect to an acknowledgement packet and a retransmission packet, which correspond to the type of data to be transmitted, in a packet included in the data. The apparatus includes a Media Access Control (MAC) control unit which determines the type of packet to be transmitted, and sets the packet to indicate an acknowledgement policy and a retransmission policy with respect to the packet; and a communication unit which transmits the packet. | 04-22-2010 |
20100135259 | METHOD AND APPARATUS FOR CHANGING COMMUNICATION LINK BETWEEN SOURCE DEVICES AND SINK DEVICES - Provided is a method of changing a communication link between source devices and sink devices. The method includes in a first downlink period, broadcasting an uplink period allocation message to the sink devices and passive source devices by an active source device, which establishes a communication link with a primary sink device from among the sink devices; during a first uplink period, broadcasting by a primary passive source device a link set message for establishing a communication link with the primary sink device to all the source devices in the network; during a second downlink period, relaying the link set message to all the sink devices in the network, wherein the link set message is relayed by the active source device; and during a second uplink period, establishing a communication link between the primary sink device and the primary passive source device by the primary sink device. | 06-03-2010 |
20100220977 | METHOD AND APPARATUS FOR PROTECTING AGAINST COPYING CONTENTS BY USING WiHD DEVICE - A method and apparatus for protecting against copying high definition (HD) contents transmitted in a wireless HD (WiHD) network by using a WiHD source or sink device, the method including: determining a type of copy protection of contents transmitted in the WiHD network; calculating accumulatively a number of media access control (MAC) sub-packets as a input counter information, wherein the MAC sub packets constitute a MAC payload including the contents; packetizing the type of copy protection and the input counter information into a MAC packet; and transmitting the MAC packet to a WiHD sink device. | 09-02-2010 |
20110032881 | METHOD AND APPARATUS FOR TRANSCEIVING DATA USING DIRECTIONAL BEAM IN WIRELESS PERSONAL AREA NETWORK - Provided are a method and apparatus for data communication in a wireless personal area network (WPAN) using directional beams, the method including: setting priorities to a plurality of beam paths capable of establishing a link between a first device and a second device; generating a list of the beam paths to which the priorities are set; and establishing a link between the first device and the second device with reference to the generated list. Accordingly, time and wireless resources for restoring the link can be minimized. | 02-10-2011 |
20110107388 | METHOD AND APPARATUS FOR PROVIDING USER INPUT BACK CHANNEL IN AUDIO/VIDEO SYSTEM - A method and apparatus for providing a user input back channel (UIBC) in an audio/video (AV) source device and an AV sink device communicating according to a wireless fidelity (Wi-Fi) display (WFD) standard is provided. The method includes: setting up an AV control session and an AV data session between the AV source devices according to the WFD standards; enabling the UIBC from the AV sink device to the AV source device by using the AV control session; and transmitting a user input from the AV sink device to the AV source device through the UIBC. | 05-05-2011 |
20110142160 | METHOD AND APPARATUS FOR TRANSMITTING URGENT DATA - A method and apparatus for transmitting urgent data by embedding the urgent data in normal data is provided. An urgent data signal is embedded in a normal data signal in such a way that the normal data signal is not affected, and then the urgent data signal is transmitted together with the normal data signal thereby stably transmitting urgent data without using a separate urgent data line. | 06-16-2011 |
20110185200 | METHOD AND APPARATUS FOR WAKING DEVICE FROM POWER SAVE MODE - A method for waking a device from a power save mode to an active mode includes: transmitting, by a first device, a magic packet through a predetermined channel to a second device, which operates in the power save mode by repeating a doze state and an awake state according to a predetermined period of time, for notifying the second device to switch to the active mode; and retransmitting the magic packet to the second device through the predetermined channel if a response to the magic packet has not been received from the second device and a predetermined time has not elapsed after transmitting the magic packet through the predetermined channel. | 07-28-2011 |
20110187898 | PHOTOGRAPHING METHOD AND APPARATUS AND A RECORDING MEDIUM STORING A PROGRAM FOR EXECUTING THE METHOD - A photographing method and apparatus are provided. In the method, an image signal of an object region is detected from an input image signal, a shadow region is detected from the object region image signal, and an image signal obtained by superimposing the shadow region on the object region image signal is displayed. When removal of a shadow is requested after the input image signal is captured, the photographing method corrects a brightness level of the shadow region. The photographing apparatus includes an object region detecting unit configured to detect an image signal of an object region from an image signal; a shadow region detecting unit configured to detect a shadow region from the object region image signal, and an image signal superimposing unit configured to output an image signal detected by superimposing the shadow region detected by the shadow region detecting unit onto the object region image signal detected by the object region detecting unit. | 08-04-2011 |
20110209183 | METHOD AND APPARATUS FOR TRANSMITTING DATA BASED ON AUDIO/VIDEO INTERFACE - Provided are a method and an apparatus for forming a network with various audio/video (AV) devices via a link established by using an AV interface supporting bidirectional data transmission and for transmitting and receiving various types of data via the AV interface. | 08-25-2011 |
20110264752 | METHOD AND APPARATUS FOR TRANSMITTING CONTENT TO PLURALITY OF DEVICES - A method and apparatus for transmitting content from a source device are provided. The method includes transmitting a message to a branch device and a second device inquiring whether a conversion function for converting content that is streamed to a first device, is installed on the branch device or second device; receiving a response to the transmitted message; transmitting a message requesting conversion of the content to the branch device or the second device, which includes the conversion function; and transmitting the content to the branch device. The content is relayed to the second device by the branch device, and is converted by the branch device or the second device according to performance capabilities of the second device. | 10-27-2011 |
20110265129 | METHOD AND APPARATUS FOR TRANSMITTING ETHERNET DATA THROUGH AUDIO/VIDEO INTERFACE - Provided are methods and apparatuses for transmitting and receiving data between a device of an audio/video (AV) network and a device of an Ethernet network by using correspondence between an AV network address and a medium access control (MAC) address. A method of transmitting data to a second device by using a first device includes: generating a transmission unit of a second type network in which a second type network address of the second device is set as a destination address; generating a transmission unit of a first type network including the generated transmission unit of the second type network by setting a first type network address of a third device, corresponding to the second type network address of the second device, as a destination address; and transmitting the generated transmission unit of the first type network to the third device. | 10-27-2011 |
20110296058 | MEDIA PLAYER DEVICE AND METHOD FOR WAKE-UP THEREOF - A media player device and a method for wake-up thereof are provided. The method includes: when the media player device is in a standby mode, checking whether an external device is connected to the plurality of contact locations; and if the external device is connected to the media player device, waking up the media player device. | 12-01-2011 |
20120044425 | METHOD AND APPARATUS FOR MULTIPLEXING AND DEMULTIPLEXING DATA TRANSMITTED AND RECEIVED BY USING AUDIO/VIDEO INTERFACE - A method and apparatus for multiplexing a plurality of streams transmitted and received via an audio/video (AV) link by allocating to the plurality of streams a plurality of basic units included in a transmission unit, and generating and transmitting an additional plurality of transmission units. | 02-23-2012 |
20120047281 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DATA BASED ON SECURED PATH BANDWIDTH IN NETWORK ESTABLISHED BY USING AUDIO/VIDEO INTERFACE - A method and apparatus for transmitting and receiving data. The method and apparatus previously determines a validity of a data transmission path for transmitting a stream from a source device to a sink device. The validity of the transmission path is verified by checking and securing the data transmission path, thereby executing a streaming service based on the validity. | 02-23-2012 |
20120093085 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING LEGACY FORMAT DATA IN HIGH THROUGHPUT WIRELESS NETWORK - A method and an apparatus are provided for enabling a legacy station to perform virtual carrier sensing when a plurality of stations with heterogeneous capabilities coexist in a wireless network. The method includes receiving first data compliant with a first protocol, and transmitting second data compliant with a second protocol, where the first protocol is downward compatible with the second protocol. | 04-19-2012 |
20120122348 | CONNECTOR AND INTERFACE DEVICE - A connector and an interface device are provided. The connector includes: a plurality of contact locations having sequentially designated numbers; and a housing which houses the plurality of contact locations. The plurality of contact locations include: a first device pair contact location group which is configured to transmit data between a first pair of devices; a second device pair contact location group which is configured to transmit data between a second pair of devices; a third device pair contact location group which is configured to transmit data between a third pair of devices; and a fourth device pair contact location group which is configured to transmit data between a fourth pair of devices. | 05-17-2012 |
20130080615 | METHOD AND APPARATUS FOR DETERMINING A COORDINATOR - A method and an apparatus for electing a coordinator of a network based on information regarding coordinator capacity including information regarding at least one item for determining whether a corresponding device is suitable as a coordinator. | 03-28-2013 |
20130222690 | DATA TRANSMISSION APPARATUS, DATA RECEIVING APPARATUS, DATA TRANSCEIVING SYSTEM, DATA TRANSMISSION METHOD AND DATA RECEIVING METHOD - Disclosed is a data transmitting apparatus, which includes a packet generating unit which generates a metadata packet for multi-channel audio data; and a transmission unit which transmits the generated metadata packet to a receiving apparatus, wherein, the generated metadata packet includes an Audio Channel Allocation Standard Type (ACAT) field which indicates channel allocation standard type information of the multi-channel audio data. | 08-29-2013 |
20130223448 | DATA TRANSMITTING APPARATUS, DATA RECEIVING APPARATUS, DATA TRANSRECEIVING SYSTEM, DATA TRANSMITTING METHOD, DATA RECEIVING METHOD AND DATA TRANSRECEIVING METHOD - A data transmitting apparatus includes a packet generator which generates a plurality of packets regarding multi-channel audio sample data and transmitter which transmits the plurality of generated packets to a data receiving apparatus. Each of the plurality of packets includes an identifier field to distinguish a position or an order of the packets. | 08-29-2013 |
20130223456 | DATA TRANSMITTING APPARATUS, DATA RECEIVING APPARATUS, DATA TRANSRECEIVING SYSTEM, DATA TRANSMITTING METHOD, DATA RECEIVING METHOD AND DATA TRANSRECEIVING METHOD - A data transmitting apparatus is provided. The data transmitting apparatus includes a packet generator configured to generate a packet including a plurality of sub packets and a transmitter configured to transmit the generated packet to a data receiving apparatus. Each of the plurality of sub packets includes audio data corresponding to content among a plurality of contents. | 08-29-2013 |
20130223632 | DATA TRANSMITTING APPARATUS, DATA RECEIVING APPARATUS, DATA TRANSCEIVING SYSTEM, DATA TRANSMITTING METHOD, AND DATA RECEIVING METHOD - A data transmitting apparatus is disclosed. The data transmitting apparatus includes a block generator which generates an Extended Display Identification Data (EDID) block regarding multi-channel audio data; and a transmitter which transmits the EDID block to a data receiving apparatus, wherein the EDID block includes at least one of a first sub block representing 3D audio characteristics of the multi-channel audio data, a second sub block representing 3D speaker placement information of the multi-channel audio data, and a third sub block representing multi-stream audio characteristics of the multi-channel audio data. | 08-29-2013 |
20130230296 | DATA TRANSMITTER, DATA RECEIVER, DATA TRANSCEIVING SYSTEM, DATA TRANSMITTING METHOD, DATA RECEIVING METHOD, AND DATA TRANSCEIVING METHOD - A data transmitter is provided. The data transmitter includes a packet generating unit which generates a packet including encryption information of a content stream, and a transmitting unit which transmits the generated packet to a data receiver, wherein the generated packet comprises a first field for indicating identification information of the content stream, and a second field for indicating an encryption parameter value of the content stream. | 09-05-2013 |