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    • 1. 发明申请
    • PIPE END SHAPE CORRECTING APPARATUS FOR UOE METAL PIPE
    • 用于UOE金属管的管端形状校正装置
    • US20110283765A1
    • 2011-11-24
    • US13114090
    • 2011-05-24
    • Makoto ABETomoaki Ikeda
    • Makoto ABETomoaki Ikeda
    • B21D1/08
    • B21D1/08B21C37/30B21D3/14B21D37/02
    • [Problem] There is provided a pipe end shape correcting apparatus capable of improving the roundness without loss of work efficiency and the mechanical damage to a weld bead even in the case where the pipe ends of UOE metal pipes having various outside diameters are worked.[Solution] In a pipe end shape correcting apparatus for a UOE metal pipe for correcting the roundness of a pipe end portion by applying a pressure to the pipe end portion held between an inner surface-side die and an outer surface-side die, the inner surface-side die having an upper surface having a circular arc-shaped cross section and being fixed to an upper part of a base on the inner surface side, and the outer surface-side die having a lower surface having a circular arc-shaped cross section and being fixed to a lower part of a base on the outer surface side, each of the inner surface-side die and the outer surface-side die is split into a plurality of parts, and is fixed so that a space between the split die parts is located in a respective central portion of the split inner surface-side dies and the split outer surface-side dies.[Selected Drawing] FIG. 2
    • [问题]即使在加工有各种外径的UOE金属管的管端的情况下,也能够提高圆形度而不损失工作效率和对焊缝的机械损伤。 [解决方案]在用于通过向保持在内表面侧模具和外表面侧模具之间的管端部施加压力来校正管端部的圆度的UOE金属管的管端形状校正装置中, 内表面侧模具具有圆弧形截面的上表面,并且在内表面侧固定到基部的上部,并且外表面侧模具具有下表面,其具有圆弧形状 并且固定在外表面侧的基部的下部,内表面侧模具和外表面侧模具中的每一个被分成多个部分,并被固定成使得在 分割模具部件位于分割的内表面侧模具和分割的外表面侧模具的相应的中心部分中。 [所选图] 2
    • 5. 发明授权
    • Digital chrominance signal demodulating device
    • 数字色度信号解调装置
    • US5654767A
    • 1997-08-05
    • US443762
    • 1995-05-18
    • Tomoaki IkedaKazuhiko Yawata
    • Tomoaki IkedaKazuhiko Yawata
    • H04N9/45H04N9/44H04N9/66
    • H04N9/66H04N9/44
    • In a digital chrominance signal demodulating device receiving a carrier chrominance signal obtained by digitizing an analog composite video signal, a frequency component near the horizontal frequency of the color subcarrier is extracted, and color-difference signals are output. An identifying circuit forms a selection signal for identifying one of the color-difference signals contained in the carrier chrominance signal, within a color burst signal period, on the basis of a system clock and a horizontal sync signal. A selecting circuit selects the color-difference signals on the basis of the selection signal. The color-difference signals obtained by sampling in accordance with the system clock are kept in phase with the color burst signal. Accordingly, the digital chrominance signal can be demodulated by the use of less expensive digital circuits.
    • 在接收通过数字化模拟复合视频信号而获得的载波色度信号的数字色度信号解调装置中,提取在彩色副载波的水平频率附近的频率分量,并输出色差信号。 识别电路基于系统时钟和水平同步信号,在彩色同步信号周期内形成用于识别载波色度信号中包含的色差信号之一的选择信号。 选择电路根据选择信号选择色差信号。 通过根据系统时钟的采样得到的色差信号与色同步信号保持同相。 因此,可以通过使用较便宜的数字电路来解调数字色度信号。