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    • 5. 发明授权
    • Apparatus and method for controlling multi-channel access
    • 用于控制多通道访问的装置和方法
    • US07899074B2
    • 2011-03-01
    • US12153704
    • 2008-05-22
    • Tae Joon ParkSe Han KimNae-Soo KimCheol Sig PyoJae Yong LeeByung Chul Kim
    • Tae Joon ParkSe Han KimNae-Soo KimCheol Sig PyoJae Yong LeeByung Chul Kim
    • H04L12/40
    • H04W72/02H04W72/0406Y02D70/142Y02D70/166
    • Provided is an apparatus and method for controlling multi-channel access in USN-based MAC. The multi-channel access control apparatus includes a channel scanner, a control channel preoccupier, and an available channel exchanger. The channel scanner scans at least one or more available channels among the N data channels in a Tx sensor node. The control channel preoccupier preoccupies, in the Tx sensor node, the control channel through control channel sensing and back-off and broadcasts a preamble on the control channel periodically. The available channel exchanger detects, in an Rx sensor node, the available channels available to the Tx sensor node on the basis of the received preamble, selects a channel available to the Rx sensor node among the detected available channels, and transmits information about the selected channel to the Tx sensor node.
    • 提供了一种用于在基于USN的MAC中控制多信道接入的装置和方法。 多通道访问控制装置包括信道扫描器,控制信道预占方和可用信道交换机。 信道扫描器扫描Tx传感器节点中的N个数据信道中的至少一个或多个可用信道。 控制信道预占在Tx传感器节点中通过控制信道感测和退避来控制控制信道,并且周期性地在控制信道上广播前导码。 可用信道交换机在Rx传感器节点中,根据接收到的前导码检测Tx传感器节点可用的可用信道,在检测到的可用信道中选择可用于Rx传感器节点的信道,并发送关于所选择的信道的信息 通道到Tx传感器节点。
    • 7. 发明申请
    • Apparatus and method for controlling multi-channel access
    • 用于控制多通道访问的装置和方法
    • US20090154485A1
    • 2009-06-18
    • US12153704
    • 2008-05-22
    • Tae Joon ParkSe Han KimNae-Soo KimCheol Sig PyoJae Yong LeeByung Chul Kim
    • Tae Joon ParkSe Han KimNae-Soo KimCheol Sig PyoJae Yong LeeByung Chul Kim
    • H04L12/40
    • H04W72/02H04W72/0406Y02D70/142Y02D70/166
    • Provided is an apparatus and method for controlling multi-channel access in USN-based MAC. The multi-channel access control apparatus includes a channel scanner, a control channel preoccupier, and an available channel exchanger. The channel scanner scans at least one or more available channels among the N data channels in a Tx sensor node. The control channel preoccupier preoccupies, in the Tx sensor node, the control channel through control channel sensing and back-off and broadcasts a preamble on the control channel periodically. The available channel exchanger detects, in an Rx sensor node, the available channels available to the Tx sensor node on the basis of the received preamble, selects a channel available to the Rx sensor node among the detected available channels, and transmits information about the selected channel to the Tx sensor node.
    • 提供了一种用于在基于USN的MAC中控制多信道接入的装置和方法。 多通道访问控制装置包括信道扫描器,控制信道预占方和可用信道交换机。 信道扫描器扫描Tx传感器节点中的N个数据信道中的至少一个或多个可用信道。 控制信道预占在Tx传感器节点中通过控制信道感测和退避来控制控制信道,并且周期性地在控制信道上广播前导码。 可用信道交换机在Rx传感器节点中,根据接收到的前导码检测Tx传感器节点可用的可用信道,在检测到的可用信道中选择可用于Rx传感器节点的信道,并发送关于所选择的信道的信息 通道到Tx传感器节点。
    • 10. 再颁专利
    • Copy prevention method and apparatus of a digital recording/reproducing system
    • USRE44106E1
    • 2013-03-26
    • US12318746
    • 2009-01-07
    • Tae Joon Park
    • Tae Joon Park
    • G06F21/00G06F1/00H04N7/167H04N5/913G11B20/00
    • G06F21/10G06F2211/007G11B20/00086G11B20/0021G11B20/00333G11B20/00557G11B20/00753G11B20/00768H04N5/913H04N2005/91328H04N2005/91364
    • A copy prevention method and apparatus of a digital magnetic recording/reproducing system performs the copy prevention function by encoding to insert a marker involving copy prevention function information and executing the function and allows a program supplier to realize a desired copy prevention function of various patterns, in which the marker formed by a control word for scrambling audio and video bit straps and copy prevention information for preventing an illegal copy is encrypted by an encoded key to be multiplexed with the audio and video bit strips scrambled by the control word. The marker transmitted is detected from the bit strips to be decrypted and analyzed by the encoded key to determine whether the copy is permitted or not, so that the detected marker is updated to be recorded on a video tape and the control word is produced from the marker to perform the descrambling to supply the result to a monitor to be displayed. Thus, the program supplier selects the copy prevention function, and a separate format converting apparatus is not required since a field defined within a GA format is utilized while an existing DVCR is not need to be changed for performing the copy prevention function as the data amount to be recorded is not increased. A method and apparatus for recording digital data are discussed. According to an embodiment, the invention is directed to a method of recording digital data using a data recording/reproducing apparatus, the data recording/reproducing apparatus including a scrambler, the method comprising: scrambling, by the scrambler, at least one data units included in the digital data based on control data, the control data being used for controlling a parameter of a scrambling/descrambling operation, wherein one or more succeeding data units included in the digital data are scrambled based on the same control data; and recording, by the data recording/reproducing apparatus, the at least one scrambled data unit and the control data in a portable data storage.