| 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 |
