Apparatus and method for fast fourier transform/inverse fast fourier transform
    1.
    发明授权
    Apparatus and method for fast fourier transform/inverse fast fourier transform 有权
    快速傅里叶变换/逆快速傅里叶变换的装置和方法

    公开(公告)号:US08023401B2

    公开(公告)日:2011-09-20

    申请号:US12543842

    申请日:2009-08-19

    IPC分类号: H04J11/00

    CPC分类号: G06F17/142

    摘要: An FFT/IFFT apparatus and method are provided. The FFT/IFFT apparatus includes a storage unit, a first FFT/IFFT unit, a second FFT/IFFT unit, and a third FFT/IFFT unit. The storage unit has as many addresses as the number of bits of input data. The first FFT/IFFT unit sequentially stores half of the input data in the storage unit, performs a first-point FFT/IFFT operation while sequentially receiving the other half of the input data, and stores the first-point FFT/IFFT operation result in the storage unit. The second FFT/IFFT unit performs a second-point FFT/IFFT operation on the first-point FFT/IFFTed data, and stores the second-point FFT/IFFT operation result in the storage unit. The third FFT/IFFT unit performs a third-point FFT/IFFT operation on the second-point FFT/IFFTed data, and stores the third-point FFT/IFFT operation result in the storage unit.

    摘要翻译: 提供FFT / IFFT装置和方法。 FFT / IFFT装置包括存储单元,第一FFT / IFFT单元,第二FFT / IFFT单元和第三FFT / IFFT单元。 存储单元具有与输入数据的位数一样多的地址。 第一FFT / IFFT单元顺序地将输入数据的一半存储在存储单元中,在顺序地接收输入数据的另一半的同时执行第一点FFT / IFFT操作,并将第一点FFT / IFFT运算结果存储在 存储单元。 第二FFT / IFFT单元对第一点FFT / IFFT数据执行二点FFT / IFFT运算,并将第二点FFT / IFFT运算结果存储在存储单元中。 第三FFT / IFFT单元对第二点FFT / IFFTed数据执行第三点FFT / IFFT操作,并将第三点FFT / IFFT运算结果存储在存储单元中。

    BIT CALCULATION METHOD AND APPARATUS FOR PDSCH TRANSMISSION
    2.
    发明申请
    BIT CALCULATION METHOD AND APPARATUS FOR PDSCH TRANSMISSION 有权
    用于PDSCH传输的位计算方法和装置

    公开(公告)号:US20100159939A1

    公开(公告)日:2010-06-24

    申请号:US12542814

    申请日:2009-08-18

    IPC分类号: H04W72/00

    摘要: Provided is a bit calculation method, which accurately and easily calculates how many bits are transmitted by codeword per PDSCH in advance before a modulator performs modulation by TTI unit on a PCH or a DL-SCH transferred by a TrCH encoder, in a base-station modulator applied to an LTE-advanced system. Accordingly, the bit calculation method enables smooth data transmission, and easily checks data transmission error.

    摘要翻译: 提供了一种比特计算方法,其可以在调制器通过TTI单元在由TrCH编码器传送的PCH或DL-SCH上进行调制之前,预先准确地容易地计算每个PDSCH的码字数量, 调制器应用于LTE高级系统。 因此,位计算方法能够平滑地进行数据传输,并且容易地检查数据传输错误。

    Method for detecting random access signal
    3.
    发明授权
    Method for detecting random access signal 有权
    随机存取信号检测方法

    公开(公告)号:US08576956B2

    公开(公告)日:2013-11-05

    申请号:US12541304

    申请日:2009-08-14

    IPC分类号: H04L27/06

    摘要: Provided is a method for detecting random access signal, and the method includes detecting a peak position of a random access signal in a first preamble section and ignoring the random access signal apart from the peak position for less than a certain distance in a second preamble section adjacent to the first preamble section.

    摘要翻译: 提供了一种用于检测随机接入信号的方法,并且该方法包括检测第一前导码部分中的随机接入信号的峰值位置,并且在第二前导码部分中忽略除了峰值位置小于一定距离的随机接入信号 与第一前序部分相邻。

    Bit calculation method and apparatus for PDSCH transmission
    4.
    发明授权
    Bit calculation method and apparatus for PDSCH transmission 有权
    用于PDSCH传输的比特计算方法和装置

    公开(公告)号:US08379616B2

    公开(公告)日:2013-02-19

    申请号:US12542814

    申请日:2009-08-18

    IPC分类号: H04J1/00

    摘要: Provided is a bit calculation method, which accurately and easily calculates how many bits are transmitted by codeword per PDSCH in advance before a modulator performs modulation by TTI unit on a PCH or a DL-SCH transferred by a TrCH encoder, in a base-station modulator applied to an LTE-advanced system. Accordingly, the bit calculation method enables smooth data transmission, and easily checks data transmission error.

    摘要翻译: 提供了一种比特计算方法,其可以在调制器通过TTI单元在由TrCH编码器传送的PCH或DL-SCH上进行调制之前,预先准确地容易地计算每个PDSCH的码字数量, 调制器应用于LTE高级系统。 因此,位计算方法能够平滑地进行数据传输,并且容易地检查数据传输错误。

    High-speed discrete fourier transform apparatus and method thereof
    5.
    发明授权
    High-speed discrete fourier transform apparatus and method thereof 有权
    高速离散傅里叶变换装置及其方法

    公开(公告)号:US08375075B2

    公开(公告)日:2013-02-12

    申请号:US12570357

    申请日:2009-09-30

    IPC分类号: G06F17/14

    CPC分类号: G06F17/142

    摘要: Provided are a high-speed Discrete Fourier Transform (DFT) apparatus and a method thereof. The high-speed DFT apparatus includes a zero padding unit, a Fast Fourier Transform (FFT) unit, and a preamble index decision unit. The zero padding unit receives a first input signal having a length of a prime number and changes the first input signal into a second input signal having a length of an exponentiation of 2. The FFT unit performs a FFT on the second input signal outputted from the zero padding unit. The preamble index decision unit detects a preamble index from an output signal from the FFT unit.

    摘要翻译: 提供了一种高速离散傅立叶变换(DFT)装置及其方法。 高速DFT装置包括零填充单元,快速傅里叶变换(FFT)单元和前导索引确定单元。 零填充单元接收具有素数长度的第一输入信号,并将第一输入信号改变为具有取幂的2的第二输入信号。FFT单元对从第二输入信号输出的第二输入信号执行FFT 零填充单位。 前导码索引决定单元从来自FFT单元的输出信号检测前导码索引。

    APPARATUS AND METHOD FOR TAIL BITING CONVOLUTIONAL ENCODING
    6.
    发明申请
    APPARATUS AND METHOD FOR TAIL BITING CONVOLUTIONAL ENCODING 审中-公开
    尾随位移编码的设备和方法

    公开(公告)号:US20100153826A1

    公开(公告)日:2010-06-17

    申请号:US12536092

    申请日:2009-08-05

    IPC分类号: H03M13/23 G06F11/10

    CPC分类号: H03M13/235 H03M13/413

    摘要: Provided are an apparatus and a method for tail biting convolutional encoding. The apparatus includes a plurality of shift registers and at least one operator. The plurality of shift registers sequentially performs a shift operation on input bit-stream. The operator outputs an encoded bit-stream by performing convolutional encoding on an output of the shift register using a generator polynomial corresponding to a predetermined code rate. A transmission encoded bit-stream is created by replacing encoded data for a certain initial bit-stream of the encoded bit-stream with a bit-stream obtained by subsequently performing convolutional encoding on the initial bit-stream.

    摘要翻译: 提供了一种用于尾巴卷积编码的装置和方法。 该装置包括多个移位寄存器和至少一个操作符。 多个移位寄存器顺序地对输入比特流执行移位操作。 操作者通过使用对应于预定码率的生成多项式对移位寄存器的输出执行卷积编码来输出编码比特流。 通过用编码比特流的特定初始比特流的编码数据替换通过在初始比特流上随后执行卷积编码获得的比特流来创建传输编码比特流。

    Average current controller
    7.
    发明授权
    Average current controller 有权
    平均电流控制器

    公开(公告)号:US08698422B2

    公开(公告)日:2014-04-15

    申请号:US13206195

    申请日:2011-08-09

    CPC分类号: H05B33/0818 Y02B20/347

    摘要: An average current controller configured for connection to display-components through a power switch. The average current controller includes first, second, and third comparators, an integrator, and a reference current generator. The first comparator compares a peak current level of reference current with a load current level of load current and outputs a first comparison result. The load current denotes current flowing through the display-components. The second comparator compares the peak current level of reference current with an average current level of the load current and outputs a second comparison result. The integrator integrates the second comparison result. The third comparator compares the integral value of the integrator with a predetermined value and outputs a third comparison result. The reference current generator sets the peak current level based on the first comparison result and the third comparison result and generates the reference current with the set peak current level.

    摘要翻译: 一个平均电流控制器,配置为通过电源开关连接到显示器组件。 平均电流控制器包括第一,第二和第三比较器,积分器和参考电流发生器。 第一个比较器将参考电流的峰值电流电平与负载电流的负载电流水平进行比较,并输出第一个比较结果。 负载电流表示流过显示器组件的电流。 第二个比较器将参考电流的峰值电流电平与负载电流的平均电流电平进行比较,并输出第二个比较结果。 积分器集成了第二个比较结果。 第三比较器将积分器的积分值与预定值进行比较,并输出第三比较结果。 参考电流发生器基于第一比较结果和第三比较结果设置峰值电流电平,并以设定的峰值电流电平生成参考电流。

    Method and apparatus for transmitting data using visible light communication
    8.
    发明授权
    Method and apparatus for transmitting data using visible light communication 失效
    使用可见光通信发送数据的方法和装置

    公开(公告)号:US08634725B2

    公开(公告)日:2014-01-21

    申请号:US13269197

    申请日:2011-10-07

    IPC分类号: H04B10/00 H04B10/04 H04B10/12

    CPC分类号: H04B10/116

    摘要: A transmitting apparatus using visible light communication generates a light source control signal from color information representing additional information and transmits additional information with a color of light that is emitted by a light source by controlling an on/off time of a plurality of LEDs according to the light source control signal. Therefore, a user can intuitively know additional information from a color of light that is emitted by the light source.

    摘要翻译: 使用可见光通信的发送装置从表示附加信息的颜色信息生成光源控制信号,并通过控制多个LED的开/关时间根据光源发出由光源发出的光的颜色的附加信息 光源控制信号。 因此,用户可以直观地从光源发出的光的颜色中知道附加信息。

    Image forming apparatus and control method thereof
    9.
    发明授权
    Image forming apparatus and control method thereof 有权
    图像形成装置及其控制方法

    公开(公告)号:US08270881B2

    公开(公告)日:2012-09-18

    申请号:US12691030

    申请日:2010-01-21

    申请人: Dae Ho Kim

    发明人: Dae Ho Kim

    IPC分类号: G03G15/08

    摘要: An image forming apparatus and a control method thereof provides that when circulation of developer in a housing of a developing unit is deteriorated due to concentration of the developer, thus applying increased load to an agitator, the agitator is appropriately rotated forwardly and backwardly under the control of a controller. This may prevent overloading of the agitator and release the concentrated developer.

    摘要翻译: 图像形成装置及其控制方法提供:当显影单元的壳体中的显影剂的循环由于显影剂的浓度而变差,从而对搅拌器施加增加的负载时,搅拌器在控制下适当地向前和向后旋转 的控制器。 这可以防止搅拌器的过载并释放浓缩的显影剂。

    METHOD AND APPARATUS FOR DECOMPOSING RECEIVED SYMBOL SIGNAL MODULATED WITH BIT REFLECTED GRAY CODE IN BIT INFORMATION
    10.
    发明申请

    公开(公告)号:US20110103521A1

    公开(公告)日:2011-05-05

    申请号:US12734984

    申请日:2008-09-01

    IPC分类号: H04L27/06

    CPC分类号: H04L25/067 H04L1/005

    摘要: Disclosed is a method and apparatus for composing a received symbol signal modulated with a bit reflected Gray code into bit information. According to an embodiment of the present invention, a positive integer of the received symbol signal having bits is assigned according to the Gray mapping rule, and a sign is determined. A value that is indicative of an arrangement of the bits constituting the received symbol signal is calculated. A boundary value in at least one bit group consisting of the bits constituting the received symbol signal is acquired, and a difference from an absolute value of the received symbol signal is calculated. The received symbol signal is converted into information per bit using a value of the received symbol signal based on the positive integer and the determined sign, the value that is indicative of the bit arrangement, and the difference from the absolute value. Therefore, it is possible to reduce complexity in bitwise decomposition for an iterative decoder inevitably used in a receiver.

    摘要翻译: 公开了一种用于将被反映格雷码的位进行调制的接收符号信号组合成比特信息的方法和装置。 根据本发明的实施例,根据Gray映射规则分配具有位的接收符号信号的正整数,并且确定符号。 计算表示构成接收符号信号的位的排列的值。 获取由构成接收到的符号信号的比特组构成的至少一个比特组中的边界值,并且计算与接收到的符号信号的绝对值的差值。 基于正整数和确定的符号,指示比特排列的值以及与绝对值的差,使用接收到的符号信号的值将接收的符号信号转换为每位的信息。 因此,可以降低在接收机中不可避免地使用的迭代解码器的逐位分解的复杂度。