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    • 83. 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。
    • 90. 发明授权
    • Video recording and reproducing apparatus
    • 视频记录和再现设备
    • US5574568A
    • 1996-11-12
    • US241002
    • 1994-05-11
    • Tatsuro JuriEiji Yamauchi
    • Tatsuro JuriEiji Yamauchi
    • H04N5/945H04N9/804
    • H04N9/8047H04N5/945
    • In a recording apparatus for video signals, adjacent pixels in input image signals are collected as blocks and subjected to orthogonal transformation. Then, the dc component, control data, ac components, end-of-block signal and the like in a block after orthogonal transformation are coded and the codewords are arranged in prescribed record areas. One or a plurality of record areas forms a correction area, and error correction coding is performed and recorded on the data in a correction area. When record data are reproduced and recorded again, errors are detected in the unit of the error correction area. The dc component and the like in a record area wherein an error which cannot be corrected exists are replaced by a codeword which is not used ordinarily, and a codeword for the first ac component is replaced by an end-of-block codeword.
    • 在用于视频信号的记录装置中,将输入图像信号中的相邻像素作为块进行采集并进行正交变换。 然后,编码正交变换后的块中的直流分量,控制数据,交流分量,块结束信号等,并将码字配置在规定的记录区域。 一个或多个记录区域形成校正区域,并且执行纠错编码并将其记录在校正区域中的数据上。 当再现并再次记录记录数据时,以纠错区域为单位检测错误。 存在不能校正的错误的记录区域中的直流分量等被通常不使用的码字替代,并且第一交流分量的码字被块结束码字代替。