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    • 1. 发明授权
    • ΔΣ-type A/D converter
    • &Dgr& S型A / D转换器
    • US07952506B2
    • 2011-05-31
    • US12911286
    • 2010-10-25
    • Toshio KumamotoTakashi OkudaTatsuo SengokuAkira Kitaguchi
    • Toshio KumamotoTakashi OkudaTatsuo SengokuAkira Kitaguchi
    • H03M3/00
    • H03M3/328H03M3/33H03M3/43H03M3/452
    • There is provided a technique for reducing the adverse effect of idle tones in the channels in a ΔΣ-type A/D converter including a plurality of channels for converting analog input signals into digital signals. The ΔΣ-type A/D converter includes an L channel for converting a left analog input signal into a digital signal and an R channel for converting a right analog input signal into a digital signal. Each of the L channel and the R channel includes a DC dither circuit for generating a DC addition voltage for shifting the frequency of an idle tone. In the L channel and the R channel, DC addition voltages generated by DC dither circuits are different from each other.
    • 提供了一种用于减少包括用于将模拟输入信号转换为数字信号的多个通道的&Dgr& S型A / D转换器中的通道中的空闲音调的不利影响的技术。 & S& S型A / D转换器包括用于将左模拟输入信号转换为数字信号的L通道和用于将右模拟输入信号转换为数字信号的R通道。 L沟道和R沟道中的每一个包括用于产生用于移动空闲频率的频率的DC附加电压的DC抖动电路。 在L沟道和R沟道中,由DC抖动电路产生的直流相加电压彼此不同。
    • 2. 发明授权
    • Semiconductor device test board and method for evaluating semiconductor
devices
    • 半导体器件测试板和半导体器件评估方法
    • US6114866A
    • 2000-09-05
    • US18445
    • 1998-02-04
    • Masaaki MatsuoTsuyoshi SaitohTakekazu YamashitaMichio NakajimaAkira KitaguchiHideki Toki
    • Masaaki MatsuoTsuyoshi SaitohTakekazu YamashitaMichio NakajimaAkira KitaguchiHideki Toki
    • G01R31/26G01R31/28H01L21/66G01R35/00G01R31/02
    • G01R31/2863H01L2924/0002
    • A semiconductor device test board solves a problem with conventional test boards in that test results obtained through a burn-in procedure could be identified only before the test board is taken out of a burn-in oven. Hence, conventional test boards required additional steps for checking the test results after removing the test boards from the burn-in oven. This extra step prevents the efficiency of the test from being improved. One embodiment of the present test board has indicator arms, each rotatably mounted on a pivot on the test board, for indicating, in response to a signal on a signal line, the test result of the semiconductor device associated with it. Each of the indicator arms maintains its rest position when no failure has occurred in the semiconductor device associated with it during the test. Each indicator arm changes its position if a failure has occurred in the semiconductor device during the test, and retains one of the two positions until after the test board is taken out of the burn-in oven. Thus, the test result can be determined after taking out the test board from the burn-in oven.
    • 半导体器件测试板解决了常规测试板的问题,因为只有在将测试板从老化炉中取出之前,才能识别通过烧录程序获得的测试结果。 因此,常规测试板需要额外的步骤,以便在从老化炉中取出测试板后检查测试结果。 这个额外的步骤可以防止测试的效率得到改善。 本测试板的一个实施例具有指示臂,每个指示臂可旋转地安装在测试板上的枢轴上,用于响应于信号线上的信号,指示与其相关联的半导体器件的测试结果。 当在测试期间与其相关联的半导体器件中没有发生故障时,每个指示器臂保持其静止位置。 如果在测试期间在半导体器件中发生故障,则每个指示臂改变其位置,并且保持两个位置中的一个,直到将测试板从老化炉中取出。 因此,可以在从老化炉中取出测试板之后确定测试结果。
    • 7. 发明授权
    • Semiconductor integrated circuit with clock selecting function
    • 具有时钟选择功能的半导体集成电路
    • US5453993A
    • 1995-09-26
    • US186107
    • 1994-01-25
    • Akira KitaguchiMasaharu Taniguchi
    • Akira KitaguchiMasaharu Taniguchi
    • G01R31/28G01R31/30H01L21/326H01L21/66G06F11/00
    • G01R31/30
    • Disclosed is a semiconductor integrated circuit which can be tested with a high-speed clock of actual operation level or more, even if a relatively low-priced IC tester which is not capable of supplying high-speed clocks is employed, and a method of testing the same. An exclusive OR gate (2) of the semiconductor integrated circuit receives the first test clock (TCLK1) through the first test clock input pin (P1) into the first input and the second test clock (TCLK2) through the second test clock input pin (P2) into the second input, to output a high-speed clock (SCLK) resulting from the test clocks to an A input of a selector (3). Thus, the semiconductor interacted circuit internally generates the high-speed clock having higher frequency than that of the test clock to operate an internal circuit, thereby being tested with clock frequency of actual operation level or more even by means of the relatively low-priced IC tester.
    • 公开了一种半导体集成电路,其可以用实际操作电平以上的高速时钟进行测试,即使采用不能提供高速时钟的相对低廉的IC测试器,也可以使用测试方法 一样。 半导体集成电路的异或门(2)通过第一测试时钟输入引脚(P1)将第一测试时钟(TCLK1)通过第二测试时钟输入引脚(P1)接收到第一输入和第二测试时钟(TCLK2) P2)输入到第二输入端,将由测试时钟产生的高速时钟(SCLK)输出到选择器(3)的A输入端。 因此,半导体相互作用的电路在内部生成具有比测试时钟高的频率的高速时钟,以操作内部电路,从而通过相对低价的IC来实际操作电平或更高的时钟频率进行测试 测试仪
    • 8. 发明授权
    • ΔΣ-type A/D converter
    • &Dgr& S型A / D转换器
    • US07847714B2
    • 2010-12-07
    • US12411142
    • 2009-03-25
    • Toshio KumamotoTakashi OkudaTatsuo SengokuAkira Kitaguchi
    • Toshio KumamotoTakashi OkudaTatsuo SengokuAkira Kitaguchi
    • H03M1/20
    • H03M3/328H03M3/33H03M3/43H03M3/452
    • There is provided a technique for reducing the adverse effect of idle tones in the channels in a ΔΣ-type A/D converter including a plurality of channels for converting analog input signals into digital signals. The ΔΣ-type A/D converter includes an L channel for converting a left analog input signal into a digital signal and an R channel for converting a right analog input signal into a digital signal. Each of the L channel and the R channel includes a DC dither circuit for generating a DC addition voltage for shifting the frequency of an idle tone. In the L channel and the R channel, DC addition voltages generated by DC dither circuits are different from each other.
    • 提供了一种用于减少包括用于将模拟输入信号转换为数字信号的多个通道的&Dgr& S型A / D转换器中的通道中的空闲音调的不利影响的技术。 & S& S型A / D转换器包括用于将左模拟输入信号转换为数字信号的L通道和用于将右模拟输入信号转换为数字信号的R通道。 L沟道和R沟道中的每一个包括用于产生用于移动空闲频率的频率的DC附加电压的DC抖动电路。 在L沟道和R沟道中,由DC抖动电路产生的直流相加电压彼此不同。