专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06411717B1 Switched capacitor filter with a neutral bypass setting 失效
标题翻译：具有中性旁路设置的开关电容滤波器
公开(公告)号：US06411717B1
公开(公告)日：2002-06-25
申请号：US08900610
申请日：1997-07-25
申请人： Jürgen Lübbe , Peter Kirchlechner , Jörg Schambacher
发明人： Jürgen Lübbe , Peter Kirchlechner , Jörg Schambacher
IPC分类号： H03G500
CPC分类号： H03H19/004 , G11B20/24
摘要： An SC filter with intrinsic anti-alias function for adjustably decreasing or increasing the amplitude of audio signals in a predetermined frequency range. The SC filter includes a filter module having an RC network with at least one frequency-response-determining RC member whose resistor component R is realized in SC technology. The SC filter also includes a setting means connected to the filter module such that its setting determines the frequency response of the SC filter. The setting means also renders possible a neutral setting in which the effective audio signal path of the SC filter circumvents the filter module so that no decrease or increase of the amplitude of individual frequency portions takes place. An anti-alias low pass filter unit is connected into the audio signal path when the setting means is not set to the neutral setting and the anti-alias low pass filter unit is not located in the audio signal path when the setting means is set to the neutral setting. Furthermore, an audio singal processor may include such a filter.
摘要翻译：具有固有抗混叠功能的SC滤波器，用于在预定频率范围内可调节地降低或增加音频信号的幅度。 SC滤波器包括具有RC网络的滤波器模块，该RC网络具有至少一个频率响应确定RC部件，其电阻器部件R在SC技术中实现。 SC滤波器还包括连接到滤波器模块的设置装置，使得其设置确定SC滤波器的频率响应。该设置装置还使中间设置成为可能，其中SC滤波器的有效音频信号路径绕过滤波器模块，使得不会发生单个频率部分的幅度的减小或增加。当设定装置设定为中立设定时，抗混叠低通滤波器单元不设置在音频信号路径中时，将抗混叠低通滤波器单元连接到音频信号路径中，中性设置。此外，音频信号处理器可以包括这样的滤波器。

2. 发明授权

US06191631B1 Electric circuit comprising at least one switched capacitor and method of operating said circuit 有权
标题翻译：包括至少一个开关电容器的电路和操作所述电路的方法
公开(公告)号：US06191631B1
公开(公告)日：2001-02-20
申请号：US09203552
申请日：1998-12-01
申请人： Jörg Schambacher , Peter Kirchlechner , Jürgen Lübbe
发明人： Jörg Schambacher , Peter Kirchlechner , Jürgen Lübbe
IPC分类号： G11C2702
CPC分类号： H03H19/004
摘要： In an integrated circuit comprising a so-called “switched” capacitor, the latter is switched by a parallel circuit of two complementary switching transistors having mutually complementary switching pulse trains. Due to parasitic effects during this switching operation, disturbing offset voltages arise at the switched capacitor. In order to avoid such offset voltages, the edges of the one switching pulse train are shifted in time with respect to the corresponding edges of the complementary switching pulse train. To this end, a switching pulse generator contains a delay member fed with a control signal which is formed by means of a constant reference voltage using a dummy or simulation of that circuit that contains the switched capacitor.
摘要翻译：在包括所谓的“开关”电容器的集成电路中，后者由具有相互互补的开关脉冲串的两个互补开关晶体管的并联电路切换。由于在该开关操作期间的寄生效应，开关电容器产生干扰偏移电压。为了避免这样的偏移电压，一个开关脉冲串的边缘相对于互补开关脉冲串的相应边缘在时间上移位。为此，开关脉冲发生器包含延迟部件，该延迟部件馈送有使用包含开关电容器的该电路的虚拟或模拟的固定参考电压形成的控制信号。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式