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    • 65. 发明授权
    • Direct conversion receiver
    • 直接转换接收机
    • US07856218B2
    • 2010-12-21
    • US11725475
    • 2007-03-20
    • Yukinori AkamineSatoshi TanakaAkio YamamotoKazuaki Hori
    • Yukinori AkamineSatoshi TanakaAkio YamamotoKazuaki Hori
    • H04B1/10
    • H04B1/30H03G3/3052
    • In a direct conversion receiver, to cancel a DC offset generated in the baseband processing block, negative feedback arrangements comprising a gain control amplifier and a low-pass filter are respectively attached to the I and Q signal branches of the baseband block following mixer outputs. The gain control amplifier in each negative feedback circuit is gain adjusted so that the product G·B of the gain G of a primary gain control amplifier and its own gain B will be constant and thereby the DC offset is cancelled. This DC offset cancellation can be applied in a continuous receiving system with no intermittent time during a receiving operation. Capacitance elements located off-chip can be reduced to those to be used only in the low-pass filters in the negative feedback circuits, whereas many off-chip capacitance elements have been required to be inserted between each stage of gain control amplifiers in conventional baseband chains.
    • 在直接转换接收机中,为了消除在基带处理块中产生的DC偏移,包括增益控制放大器和低通滤波器的负反馈装置分别附加到混频器输出之后的基带块的I和Q信号分支。 每个负反馈电路中的增益控制放大器被增益调整,使得主增益控制放大器的增益G的乘积G·B和其自身的增益B将恒定,从而DC偏移被消除。 该DC偏移消除可以应用于在接收操作期间没有间歇时间的连续接收系统中。 位于片外的电容元件可以减少到仅在负反馈电路中的低通滤波器中使用的电容元件,而许多芯片外电容元件需要插入到常规基带中的增益控制放大器的每个级之间 链条
    • 70. 发明申请
    • IMAGING DISPLAY METHOD AND IMAGING DISPLAY DEVICE
    • 成像显示方法和成像显示装置
    • US20100182482A1
    • 2010-07-22
    • US12666530
    • 2008-06-12
    • Satoshi TanakaHiroshi SakaiSusumu Kobayashi
    • Satoshi TanakaHiroshi SakaiSusumu Kobayashi
    • H04N5/222
    • H04N3/1587G09G3/3611G09G2340/0407H04N5/349
    • An imaging display device of the present invention comprises an imaging element 1 photoelectrically converting an optical image, a readout control unit 6 controlling a readout position of the imaging element 1, an image processing unit 2 processing image signal readout from the imaging element 1, an image display unit 4 displaying image signal output from the image processing unit 2, a pixel shift unit 5 shifting an observation pixel position displayed on the image display unit 4, a pixel shift control unit 7 controlling the pixel shift unit 5, and a system control unit 8 controlling the readout control unit 6 and the pixel shift control unit 7 so that image signal photoelectrically converted by the imaging element 1 is displayed on the image display unit 4 and shifted by the pixel shift unit 5. According to the present invention, it is possible to reduce delay time from imaging to displaying and to raise spatial resolution and motion resolution.
    • 本发明的成像显示装置包括光学图像光电转换的成像元件1,控制成像元件1的读出位置的读出控制单元6,处理从成像元件1读出的图像信号的图像处理单元2, 显示从图像处理单元2输出的图像信号的图像显示单元4,移动显示在图像显示单元4上的观察像素位置的像素移位单元5,控制像素移位单元5的像素移位控制单元7以及系统控制 单元8控制读出控制单元6和像素移位控制单元7,使得由图像显示单元4光电转换的图像信号被显示在图像显示单元4上并被像素移位单元5移位。根据本发明, 可以减少从成像到显示的延迟时间,并提高空间分辨率和运动分辨率。