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    • 14. 发明授权
    • Motion estimation device, motion estimation method, motion estimation integrated circuit, and picture coding device
    • 运动估计装置,运动估计方法,运动估计集成电路和图像编码装置
    • US08208541B2
    • 2012-06-26
    • US11695145
    • 2007-04-02
    • Masayasu IguchiTatsuro JuriTakeshi Tanaka
    • Masayasu IguchiTatsuro JuriTakeshi Tanaka
    • H04N7/12
    • H04N19/523H04N19/426H04N19/433H04N19/51H04N19/61
    • Provided is a motion estimation device in which an amount of pixel data transferred from an external frame memory to an internal reference local memory is reduced. By the motion estimation device, it is possible to reduce a memory capacity and a size or processing of a circuit controlling the pixel transfer. In a reference memory control unit and an internal reference memory, a height of a area to be updated is set to L pixels, where L is power of 2, a logical address segments, whose size is suitable for address calculation, are allocated to picture space, and FIFO management is performs. In another application, an assistance memory is added, and another element other than the assistance memory performs the FIFO management for rectangular areas in an image of a conventional width. As a result, the address calculation is simplified, which makes it possible to reduce an embedded circuit for the reference memory control unit and the internal reference memory.
    • 提供了一种运动估计装置,其中从外部帧存储器传输到内部参考本地存储器的像素数据量减少。 通过运动估计装置,可以减少控制像素传送的电路的存储容量和尺寸或处理。 在参考存储器控制单元和内部参考存储器中,要更新的区域的高度被设置为L个像素,其中L是功率2,将适合于地址计算的尺寸的逻辑地址段分配给图像 空间和FIFO管理。 在另一应用中,添加辅助存储器,而辅助存储器以外的其他元件对传统宽度的图像中的矩形区域执行FIFO管理。 结果,地址计算被简化,这使得可以减少用于参考存储器控制单元和内部参考存储器的嵌入式电路。
    • 15. 发明申请
    • MOVING IMAGE DECODING APPARATUS, MOVING IMAGE CODING APPARATUS, MOVING IMAGE DECODING CIRCUIT, AND MOVING IMAGE DECODING METHOD
    • 移动图像解码设备,移动图像编码设备,移动图像解码电路和移动图像解码方法
    • US20120147959A1
    • 2012-06-14
    • US13255267
    • 2011-03-02
    • Hiroshi AmanoTakeshi TanakaTakashi HashimotoYoshiteru Hayashi
    • Hiroshi AmanoTakeshi TanakaTakashi HashimotoYoshiteru Hayashi
    • H04N7/32
    • H04N19/82H04N19/117H04N19/43H04N19/44H04N19/513H04N19/61
    • A moving image decoding apparatus which enables reduction in the memory bandwidth and the memory access latency for the motion compensation filter coefficients for use in inter-picture prediction involving motion compensation using variable coefficients includes: a decoding unit (101) which decodes, from a coded stream, a plurality of motion compensation filter coefficients; a memory (109) for holding the motion compensation filter coefficients included in the coded stream; a filter coefficient storage unit (103) for holding at least one of the motion compensation filter coefficients which is required for the motion compensation; a motion compensation unit (107) which performs motion compensation using the required motion compensation filter coefficient held in the filter coefficient storage unit; and a filter coefficient transfer control unit (102) which writes, in the memory, the motion compensation filter coefficients decoded by the decoding unit, and transfers the required motion compensation filter coefficient from the memory to the filter coefficient storage unit, only when the required coefficient is not yet stored therein.
    • 一种运动图像解码装置,其能够减少使用可变系数的运动补偿的帧间预测中使用的运动补偿滤波器系数的存储器带宽和存储器访问等待时间,包括:解码单元, 流,多个运动补偿滤波器系数; 用于保持包含在编码流中的运动补偿滤波器系数的存储器(109) 滤波器系数存储单元,用于保持运动补偿所需的运动补偿滤波器系数中的至少一个; 使用保持在滤波器系数存储单元中的所需运动补偿滤波器系数进行运动补偿的运动补偿单元(107) 以及滤波器系数传递控制单元(102),其在存储器中写入由解码单元解码的运动补偿滤波器系数,并且将所需的运动补偿滤波器系数从存储器传送到滤波器系数存储单元,只有当所需的 系数尚未存储在其中。
    • 16. 发明申请
    • IMAGE DECODING DEVICE, IMAGE CODING DEVICE, IMAGE DECODING METHOD, IMAGE CODING METHOD, PROGRAM, AND INTEGRATED CIRCUIT
    • 图像解码装置,图像编码装置,图像解码方法,图像编码方法,程序和集成电路
    • US20120099657A1
    • 2012-04-26
    • US13379442
    • 2010-07-05
    • Takeshi TanakaNaoki Yoshimatsu
    • Takeshi TanakaNaoki Yoshimatsu
    • H04N7/26
    • H04N19/436
    • An image decoding device and an image coding device are each capable of using spatial dependence across a boundary between slices to smoothly execute parallel processing. The image decoding device includes: a first decoding unit (801) decoding a block in a first slice; a second decoding unit (802) decoding a block in a second slice; and a first storage unit (811) storing inter-slice neighboring information (i) generated by decoding a boundary block included in the first slice and adjacent to the second slice and (ii) referenced when a boundary neighboring block included in the second slice and adjacent to the boundary block is decoded. The first decoding unit (801) generates the inter-slice neighboring information by decoding the boundary block and stores the generated information into the first storage unit (811). The second decoding unit (802) decodes the boundary neighboring block by reference to the stored inter-slice neighboring information.
    • 图像解码装置和图像编码装置各自能够在切片之间的边界上使用空间依赖来平滑地执行并行处理。 图像解码装置包括:第一解码单元,对第一切片中的块进行解码; 第二解码单元,对第二片中的块进行解码; 以及第一存储单元(811),其存储通过对包括在所述第一切片中并与所述第二切片相邻的边界块进行解码而生成的切片间相邻信息(i),以及(ii)当包括在所述第二切片中的边界相邻块时被参考, 邻接边界块被解码。 第一解码单元(801)通过解码边界块来生成切片间相邻信息,并将生成的信息存储到第一存储单元(811)中。 第二解码单元(802)通过参照所存储的切片间相邻信息对边界相邻块进行解码。
    • 17. 发明申请
    • IMAGE CODING METHOD AND IMAGE DECODING METHOD
    • 图像编码方法和图像解码方法
    • US20110317769A1
    • 2011-12-29
    • US13148957
    • 2010-10-13
    • Takeshi TanakaHisao Sasai
    • Takeshi TanakaHisao Sasai
    • H04N7/26
    • H04N19/44H03M7/4006H03M7/4018H04N19/13H04N19/176H04N19/194H04N19/46H04N19/61H04N19/91
    • An image coding method for improving coding efficiency by using more appropriate probability information is provided. The image coding method includes: a first coding step (S811) of coding a first set of blocks included in a first region sequentially based on first probability information; and a second coding step (S812) of coding a second set of blocks included in a second region sequentially based on second probability information. In the first coding step (S811), the first probability information is updated depending on data of a target block to be coded, after coding the target block and before coding a next target block. In the second coding step (S812), the second probability information is updated depending on the first probability information updated in the first coding step (S811), before coding the first target block.
    • 提供了一种通过使用更合适的概率信息来提高编码效率的图像编码方法。 图像编码方法包括:基于第一概率信息,顺序地对包含在第一区域中的第一组块进行编码的第一编码步骤(S811) 以及基于第二概率信息顺序地对包括在第二区域中的第二组块进行编码的第二编码步骤(S812)。 在第一编码步骤(S811)中,根据要编码的目标块的数据,在对目标块进行编码之后并对下一个目标块进行编码之前,更新第一概率信息。 在第二编码步骤(S812)中,在对第一目标块进行编码之前,根据第一编码步骤(S811)中更新的第一概率信息来更新第二概率信息。
    • 18. 发明授权
    • Power conversion device
    • 电源转换装置
    • US08044632B2
    • 2011-10-25
    • US12376464
    • 2006-10-19
    • Hideo ObiTakahiro KikuchiTakeshi TanakaDaisuke ItoKeita Hatanaka
    • Hideo ObiTakahiro KikuchiTakeshi TanakaDaisuke ItoKeita Hatanaka
    • H02P27/04
    • H02P27/06
    • A power conversion device includes a converter that converts AC power to DC power, a converter controller that controls an output voltage of the converter, an inverter that converts the DC power to AC power at a variable frequency, an inverter controller that controls an output frequency of the inverter, and a current detector that detects an AC current on an input side of the converter. It is configured in such a manner that the inverter controller adjusts a slip frequency of the induction motor in response to a fluctuation of the AC current on the input side of the converter detected by the current detector. It thus becomes possible to suppress a beat current in an output current of the inverter at the occurrence of a load fluctuation as well as a power supply voltage fluctuation.
    • 电力转换装置包括将交流电转换为直流电的转换器,控制转换器的输出电压的转换器控制器,以可变频率将直流电转换为交流电的逆变器,控制输出频率的逆变器控制器 以及检测转换器的输入侧的交流电流的电流检测器。 以使逆变器控制器响应于由电流检测器检测的转换器的输入侧的交流电流的波动来调整感应电动机的转差频率的方式构成。 因此,在发生负载变动以及电源电压变动的情况下,可以抑制逆变器的输出电流中的节拍电流。
    • 20. 发明申请
    • IMAGE DECODING APPARATUS AND IMAGE DECODING METHOD
    • 图像解码设备和图像解码方法
    • US20100322317A1
    • 2010-12-23
    • US12866430
    • 2009-10-27
    • Naoki YoshimatsuDaisuke IwahashiTakeshi Tanaka
    • Naoki YoshimatsuDaisuke IwahashiTakeshi Tanaka
    • H04N7/26
    • H04N19/40H04N19/174H04N19/436H04N19/44H04N19/70
    • To provide a simply-structured image decoding apparatus which appropriately executes parallel decoding processing. The image decoding apparatus includes: a stream segmentation unit (130) which generates plural segment streams by segmenting each of the pictures included in a bit stream into plural MB lines, and assigning each of the plural MB lines to a corresponding one of the plural segment streams to be generated; and plural decoding engines (120) which decode the respective plural segment streams in parallel. In the case where at least two consecutive MB lines in the bit stream have a dependency indicated by a predetermined code word, the stream segmentation unit (130) sets the code word to the segment streams so as to update the dependencies to new dependencies depending on the contexts of MB lines in the respective segment streams.
    • 提供一种适当执行并行解码处理的简单结构的图像解码装置。 图像解码装置包括:流分割单元,通过将包含在比特流中的每个图像分割成多个MB线来生成多个分段流,并将多个MB线分配给多个分段中的相应一个 要生成的流; 以及并行解码各个分段流的多个解码引擎​​(120)。 在比特流中至少两个连续的MB线具有由预定码字指示的依赖性的情况下,流分段单元(130)将码字设置为片段流,以便根据依赖关系将依赖性更新为新依赖 各行段流中MB行的上下文。