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    • 91. 发明授权
    • Two-output low-noise down converter circuit
    • 双输出低噪声下变频电路
    • US6009304A
    • 1999-12-28
    • US963821
    • 1997-11-04
    • Masahiro Kato
    • Masahiro Kato
    • H04B1/18H03D7/16H04B1/00
    • H04H40/90H03D7/165
    • The invention provides a two-output low-noise down converter circuit which is improved in the isolation between two outputs. In the two-output low-noise down converter circuit, an input signal is divided into two divisional signals of different polarization systems and then the divisional two signals are processed by two-system signal processing circuits which comprise low-noise amplifiers, band-pass filters, frequency converter circuits and a local oscillator, respectively. The two-output low-noise down converter circuit includes: a switching circuit for performing switching control on the outputs of the two signal processing circuits responsive to the voltages applied to two output terminals, and for selectively outputting two polarized signals to its output terminals; intermediate frequency amplifiers for amplifying the two outputs of the switching circuit and leading out the resulting outputs at the two output terminals; and a control circuit for controlling the turning-on and -off of the power of the intermediate frequency amplifiers responsive to loads of the two output terminals.
    • 本发明提供一种在两个输出之间隔离的双输出低噪声下变频电路。 在双输出低噪声降频转换器电路中,输入信号被分成不同极化系统的两​​个分频信号,然后分频两个信号由包括低噪声放大器的双系统信号处理电路,带通 滤波器,变频器电路和本地振荡器。 双输出低噪声降频转换器电路包括:开关电路,用于响应于施加到两个输出端子的电压,对两个信号处理电路的输出执行开关控制,并且用于选择性地将两个偏振信号输出到其输出端子; 中频放大器,用于放大开关电路的两个输出,并在两个输出端引出所得到的输出; 以及控制电路,用于响应于两个输出端子的负载来控制中频放大器的电源的接通和断开。
    • 93. 发明授权
    • Rank order filter
    • 排序顺序过滤器
    • US5532948A
    • 1996-07-02
    • US177989
    • 1994-01-06
    • Masahiro KohnoHiroshi NittayaMasahiro Kato
    • Masahiro KohnoHiroshi NittayaMasahiro Kato
    • G06F7/22G06F17/18G06T5/20H03H17/02G06F7/00G06F7/02
    • G06F9/30021G06F17/18G06F7/22H03H17/0263
    • A rank order filter is disclosed in which the maximum value, the minimum value and the median value are determined in a 3.times.3 local area having three sample values in each of column and row. The three sample values in the 3.times.3 local area are rearranged in descending order of magnitude by column, and the maximum values or the minimum values in each column are compared with each other thereby to determine the maximum value or the minimum value in the 3.times.3 local area. Also, after comparing the median values with each other in each column, the maximum value in the column having the minimum median value, the minimum value in the column having the maximum median value and the median value in the column having the median median value are compared with each other. The result of comparison is used to determine the median value in the 3.times.3 local area.
    • 公开了一种等级阶滤波器,其中在具有列和行的每一列中的三个采样值的3×3局部区域中确定最大值,最小值和中值。 3x3局部区域中的三个采样值按列逐个降序排列,并将每列中的最大值或最小值进行比较,从而确定3x3局部区域中的最大值或最小值 。 此外,在比较各列中的中值之后,具有最小中值,具有最大中值的列中的最小值和具有中值中值的列中的中值的列中的最大值为 相互比较。 比较结果用于确定3x3局部区域的中值。
    • 96. 发明授权
    • A system for producing image signals of a subject image by an image
sensing device
    • 一种用于通过图像感测装置产生被摄体图像的图像信号的系统
    • US4899213A
    • 1990-02-06
    • US366220
    • 1989-06-12
    • Masahiro KonishiMasafumi InuiyaAkira MuramatsuMasahiro Kato
    • Masahiro KonishiMasafumi InuiyaAkira MuramatsuMasahiro Kato
    • H04N9/07H04N9/04
    • H04N9/045
    • A system is provided for producing image signals of a photographed subject image by a solid state image sensing device and for producing a brightness signal and line sequential color difference signals from the image signal. The subject image is sensed by the image sensing device which has a color filter formed thereon. First and second horizontal scanning lines of picture elements are alternately arranged and the picture elements are opposed to filter elements of the color filter. The first horizontal scanning lines separately transmit at least red light and green light and the second horizontal scanning lines transmit at least blue light and green light, to thereby obtain color image signals. The image signal thus obtained are signal processed to produce the line sequential color difference signals R-Y and B-Y. With this signal processing, the system can produce the image signals including the line sequential color difference signals by a simplified arrangement without impairing the color productivity.
    • 提供一种用于通过固态图像感测装置产生拍摄对象图像的图像信号并且用于从图像信号产生亮度信号和行顺序色差信号的系统。 被摄体图像由其上形成有滤色器的图像感测装置感测。 图像元素的第一和第二水平扫描线被交替布置,并且图像元素与滤色器的滤色器元件相对。 第一水平扫描线至少分别发送红光和绿光,第二水平扫描线至少发射蓝光和绿光,从而获得彩色图像信号。 由此获得的图像信号被信号处理以产生行顺序色差信号R-Y和B-Y。 通过该信号处理,系统可以通过简化的布置产生包括行顺序色差信号的图像信号,而不损害色彩生产率。