公开(公告)号：US20100150181A1

公开(公告)日：2010-06-17

申请号：US12337279

申请日：2008-12-17

申请人： Hwang-Soo LEE ,  Moo-Hong Lee ,  Jeong-Han Jeong ,  Byung-Jik Keum ,  Young-Serk Shim

发明人： Hwang-Soo LEE ,  Moo-Hong Lee ,  Jeong-Han Jeong ,  Byung-Jik Keum ,  Young-Serk Shim

IPC分类号： H04J3/06 ,  H04L27/28

CPC分类号： H04L27/2647 ,  H04L27/2656 ,  H04L27/2657 ,  H04L27/2662

摘要： There is provided an apparatus for receiving a T-DMB signal. The apparatus for receiving a T-DMB signal comprises an input buffer receiving and buffering a T-DMB signal comprising a null symbol and a phase reference symbol (PRS); an initial synchronizing unit estimating and compensating for time and frequency offsets of the T-DMB signal using the null symbol and the PRS; a frame tracking unit performing estimation of the time offset and measurement of a strength of an output signal from the input buffer; an OFDM signal demodulating unit performing I/Q demodulation, frequency compensation, OFDM demodulation and de-interleaving with respect to an output signal of the frame tracking unit; a channel decoding unit performing channel decoding with respect to an output signal of the OFDM signal demodulating unit and checking quality of the channel-decoded signal; and a controller controlling operations of the initial synchronizing unit, the OFDM signal demodulating unit and the channel decoding unit 308 based on the strength of the signal measured by the frame tracking unit and the quality of the signal checked by the channel decoding unit. Accordingly, unnecessary calculating processes arc reduced by measuring the strength and quality of an input signal, thereby maximizing power efficiency of the apparatus.

摘要翻译： 提供了一种用于接收T-DMB信号的装置。 用于接收T-DMB信号的装置包括输入缓冲器，其接收和缓冲包括零符号和相位参考符号（PRS）的T-DMB信号; 初始同步单元使用空符号和PRS估计和补偿T-DMB信号的时间和频率偏移; 帧跟踪单元执行时间偏移的估计和来自输入缓冲器的输出信号的强度的测量; OFDM信号解调单元，相对于帧跟踪单元的输出信号执行I / Q解调，频率补偿，OFDM解调和解交织; 信道解码单元，对OFDM信号解调单元的输出信号进行信道解码，检查信道解码信号的质量; 以及控制器，其基于由帧跟踪单元测量的信号的强度和由信道解码单元检查的信号的质量来控制初始同步单元，OFDM信号解调单元和信道解码单元308的操作。 因此，通过测量输入信号的强度和质量来减少不必要的计算处理，从而使设备的功率效率最大化。

公开(公告)号：US20100131678A1

公开(公告)日：2010-05-27

申请号：US12626857

申请日：2009-11-27

申请人： Hwang-Soo LEE ,  Jung-Keun Kim ,  Il-Song Han ,  Young Serk Shim

发明人： Hwang-Soo LEE ,  Jung-Keun Kim ,  Il-Song Han ,  Young Serk Shim

IPC分类号： G06F13/28

CPC分类号： G06F13/28

摘要： There is provided a direct memory access apparatus and a direct memory access method.The direct memory access apparatus of the present invention comprises: a variable transmission rule map unit for setting a transmission rule with a variable block length and a variable block interval as a unit of memory transmission rule; a direct memory access unit for sending data line of the variable block length and the variable block interval, in case of access to the unit of memory by using the unit of memory transmission rule determined by the variable transmission rule map unit; and an interface unit for retrieving the unit of memory transmission rule, which is necessary for sending the data line of the variable block length and the variable block interval, from the variable transmission rule map unit and sending the unit of memory transmission rule to the direct memory access unit.

摘要翻译： 提供了直接存储器访问装置和直接存储器访问方法。 本发明的直接存储器访问装置包括：可变传输规则映射单元，用于将具有可变块长度的传输规则和可变块间隔设置为存储器传输规则的单元; 在通过使用由可变传输规则映射单元确定的存储器发送规则的单元访问存储器单元的情况下，发送可变块长度和可变块间隔的数据线的直接存储器存取单元; 以及用于从可变传输规则映射单元检索用于发送可变块长度和可变块间隔的数据线所必需的存储器传输规则单元的接口单元，并将存储器传输规则单元发送到直接 存储器存取单元。