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    • 1. 发明授权
    • Method and apparatus for pulse code modulation combination chip having
an improved autozero circuit
    • 具有改进的自动调零电路的脉冲编码调制组合芯片的方法和装置
    • US4805192A
    • 1989-02-14
    • US936369
    • 1986-12-01
    • Pierangelo ConfalonieriDaniel SenderowiczAugusto Tirelli
    • Pierangelo ConfalonieriDaniel SenderowiczAugusto Tirelli
    • H03K5/08H03M1/00H03M1/10H04B14/04H03M1/12
    • H03M1/0607H03M1/825
    • In a Pulse Code Modulated (PCM) circuit chip, apparatus in the transmit path to compensate for an offset voltage signal from a band-pass filter includes an up-down counter which is actuated to provide a digital value equivalent to the offset signal and a digital to analog converter coupled to the counter to provide an analog signal representing the digital value in the counter. During an initialization phase, the counter is incremented until the digital value of the counter provides, by means of the digital to analog converter, an analog signal that compensates for the off-set signal. After the initialization phase when the band-pass filter's offset voltage is compensated, then other circuitry including an exclusive OR gate and an associated overflow counter are used to eneable or disable the up-down counter to insure that the PCM output signal is an accurate representation of the analog input signal. The up-down counter, during the operation phase following the initialization phase, is only enabled when the analog input signal is not present.
    • 在脉冲编码调制(PCM)电路芯片中,用于补偿来自带通滤波器的偏移电压信号的传输路径中的装置包括被启动以提供与偏移信号等效的数字值的升降计数器,以及 数模转换器耦合到计数器以提供表示计数器中的数字值的模拟信号。 在初始化阶段期间,计数器递增,直到计数器的数字值通过数模转换器提供补偿偏移信号的模拟信号。 在对带通滤波器的偏移电压进行补偿的初始化阶段之后,使用包括异或门和相关联的溢出计数器的其它电路来使能或禁止升降计数器,以确保PCM输出信号是准确的表示 的模拟输入信号。 在初始化阶段之后的运行阶段,只有当模拟输入信号不存在时,才能使能上拉计数器。
    • 9. 发明授权
    • Library of standard cells for the design of integrated circuits
    • 集成电路设计标准单元库
    • US5763907A
    • 1998-06-09
    • US763937
    • 1996-12-12
    • Carlo DallavallePierangelo Confalonieri
    • Carlo DallavallePierangelo Confalonieri
    • H01L27/02H01L27/10
    • H01L27/0207
    • A cell library for the design of integrated circuits, for example using CMOS technology, includes cells which define circuit modules in rectangular areas having an identical side. Two traces are provided which extend at right-angles to the identical side and which define strips for connection to the supply, at least one of which is in contact with the source regions of MOS transistors of a CMOS pair. In order to permit the design of integrated circuits in which the analog parts are insensitive to the noise induced in the substrate by the digital parts and in which it is possible to reduce the current absorption of the digital parts in stand-by mode, the cell library also provides a group of cells in which there is provided at least one additional trace which defines an additional strip for connection to the outside and which is in contact with the body regions of the MOS transistors of the CMOS pair.
    • 用于设计集成电路的单元库,例如使用CMOS技术,包括在具有相同侧面的矩形区域中定义电路模块的单元。 提供了两条迹线,它们以直角延伸到同一侧,并且限定了用于连接到电源的条,其中至少一条与CMOS对的MOS晶体管的源极区域接触。 为了允许模拟部件对由数字部件在基板中感应的噪声不敏感的集成电路的设计,并且其中可以减少待机模式下的数字部件的电流吸收,电池 库还提供了一组单元,其中提供至少一个额外的迹线,其限定用于连接到外部并与CMOS对的MOS晶体管的体区接触的附加条。