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    • 3. 发明授权
    • Frequency synthesis circuit having a charge pump
    • 具有电荷泵的频率合成电路
    • US5929678A
    • 1999-07-27
    • US923048
    • 1997-09-03
    • Wolfdietrich G. KasperkovitzCicero S. Vaucher
    • Wolfdietrich G. KasperkovitzCicero S. Vaucher
    • H03L7/093G05F3/26H03L7/089H03L7/18H03K17/00
    • H03L7/0895G05F3/265H03L7/0896
    • A charge pump (CP) is provides for supplying at its output (23) a first current in response to an up-pulse and sinking a second current in response to a down pulse. This charge pump includes a first circuit 200, 22, CM1) for converting the first control signal into the first current, and a second circuit (206, 208, CM2) for converting the second control signal into the second current, said the first and second circuits include circuitry means comprising means (CM1, CM2) for filtering the respective control signals. It is recognized that a charge pump does not have to supply or sink current pulses which are rectangularly shaped in order for it to properly carry out its function. In the subject charge pump invention, the current sources supply or sink current pulses are smoothly shaped because the control signals supplied to the current sources are filtered. This causes the demands on the high frequency performance of the current sources to be greatly reduced. Consequently, relatively slow current sources may be used without the performance of the charge pump being limited by these slow current sources.
    • 电荷泵(CP)用于在其输出端(23)提供响应于上升脉冲的第一电流并响应于下降脉冲吸收第二电流。 该电荷泵包括用于将第一控制信号转换为第一电流的第一电路200,22,CM1,以及用于将第二控制信号转换成第二电流的第二电路(206,208,CM2),所述第一和 第二电路包括电路装置,包括用于对各个控制信号进行滤波的装置(CM1,CM2)。 可以认识到,电荷泵不必提供或吸收矩形形状的电流脉冲,以使其正常地执行其功能。 在本发明的电荷泵发明中,由于提供给电流源的控制信号被滤波,电流源电流或电流电流脉冲是平滑的。 这导致对电流源的高频性能的要求大大降低。 因此,可以使用相对较慢的电流源,而电荷泵的性能不受这些慢电流源的限制。
    • 4. 发明授权
    • Receiver, an arrangement and a method for comparing two signals
    • 接收机,用于比较两个信号的布置和方法
    • US5809407A
    • 1998-09-15
    • US762681
    • 1996-12-11
    • Wolfdietrich G. KasperkovitzCicero S. Vaucher
    • Wolfdietrich G. KasperkovitzCicero S. Vaucher
    • H03J7/00H04B1/10H04B1/16H04B17/00H04B1/18
    • H03J7/183H03J1/0008H04H60/58
    • A receiver, an arrangement and a method for comparing two signals, based on testing whether a first signal exhibits at least one property during a first time interval, and consecutively testing if a second signal exhibits at least one similar property during a second time interval, following the first time interval, the second time interval being in the range of 200 us to 5 ms. The assumption is made that if a first signal exhibits a certain property during a first time interval, it is likely to exhibit substantially the same property during a second time interval, following the first interval. Thus, if a second signal exhibits such a property during the second time interval, the second signal is deemed to be the same as the first signal. If both tests are positive, the two signals are determined to be the same. In this way, both signals need not be present simultaneously. By choosing the second interval in the range as given above, no extremely fast tuning system is needed, without the comparison becoming annoyingly audible.
    • 一种基于测试第一信号在第一时间间隔期间是否呈现至少一个属性的接收机,布置和方法来比较两个信号,并且在第二时间间隔期间连续地测试第二信号是否表现出至少一个类似属性, 在第一时间间隔之后,第二时间间隔在200US至5ms的范围内。 假设如果第一信号在第一时间间隔期间呈现特定属性,则在第一间隔之后的第二时间间隔内可能表现出基本上相同的性质。 因此,如果第二信号在第二时间间隔期间表现出这样的性质,则认为第二信号与第一信号相同。 如果两个测试都是正的,则两个信号被确定为相同。 以这种方式,两个信号不需要同时存在。 通过选择上述范围内的第二个间隔,不需要非常快速的调谐系统,而不会使对比变得恼人的声音。
    • 8. 发明申请
    • Test Prepared Rf Integrated Circuit
    • 测试准备的Rf集成电路
    • US20080208508A1
    • 2008-08-28
    • US11910186
    • 2006-03-27
    • Cicero S. Vaucher
    • Cicero S. Vaucher
    • G01R31/28G01R31/317
    • G01R31/2822
    • An integrated circuit (10) comprises a mixer circuit (14, 54a) and a local oscillator circuit (18, 58). During testing a frequency divider circuit (32, 60) in the integrated circuit (10) divides a local oscillator signal to a frequency below a normal operating range of the local oscillator (18, 58). The integrated circuit applies the divided local oscillator signal to the mixer circuit (14, 54a) instead of the local oscillator signal during testing. Signal properties of a signal derived from the mixer circuit (14, 54a) are measured while the divided local oscillator signal is applied to the mixer circuit (14, 54a).
    • 集成电路(10)包括混频器电路(14,5aa)和本地振荡器电路(18,58)。 在测试期间,集成电路(10)中的分频器电路(32,60)将本地振荡器信号分频到低于本地振荡器(18,58)的正常工作范围的频率。 在测试期间,集成电路将分频的本地振荡器信号施加到混频器电路(14,5aa)而不是本地振荡器信号。 在分配的本地振荡器信号施加到混频器电路(14,5aa)的同时测量从混频器电路(14,5aa)导出的信号的信号特性。