专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

71. 发明授权

US06956417B2 Leakage compensation circuit 失效
标题翻译：漏电补偿电路
公开(公告)号：US06956417B2
公开(公告)日：2005-10-18
申请号：US10707123
申请日：2003-11-21
申请人： Kerry Bernstein , Anthony R. Bonaccio , John A. Fifield , Allen P. Haar , Shiu C. Ho , Terence B. Hook , Michael A. Soma , Stephen D. Wyatt
发明人： Kerry Bernstein , Anthony R. Bonaccio , John A. Fifield , Allen P. Haar , Shiu C. Ho , Terence B. Hook , Michael A. Soma , Stephen D. Wyatt
IPC分类号： H03L7/06 , H03L7/089 , H03L7/093
CPC分类号： H03L7/093 , H03L7/0891
摘要： A circuit, including: a capacitor coupled between a first circuit node and a second circuit node and that leaks a leakage current from the first circuit node to the second circuit node; and a compensation circuit adapted to supply a compensatory current to compensate for the leakage current to the first circuit node.
摘要翻译：一种电路，包括：电容器，耦合在第一电路节点和第二电路节点之间，并且泄漏电流从第一电路节点泄漏到第二电路节点; 以及补偿电路，其适于提供补偿电流以补偿到第一电路节点的漏电流。

72. 发明授权

US06087841A Contact test circuit 失效
公开(公告)号：US06087841A
公开(公告)日：2000-07-11
申请号：US942217
申请日：1997-10-01
申请人： Anthony R. Bonaccio , Howard J. Leighton
发明人： Anthony R. Bonaccio , Howard J. Leighton
IPC分类号： G01R31/04 , G01R1/073
CPC分类号： G01R31/043
摘要： A method and apparatus for contact testing a plurality of devices under test, either sequentially or simultaneously. In a first test phase it is determined whether the test probe to each contact is shorted to the most negative rail. In a second phase it is determined whether the test probe has made proper contact, and whether ESD diodes on the devices under test are functional. In both test phases a negative pulse is generated on a tester bus and applied to the contact by the test probe. In the first test phase the positive rail of the device under test is grounded; in the second test phase the positive rail of the device under test is made positive. The negative rail of the device under test is connected to the negative rail of the tester. In both test phases, upon termination of the negative pulse, the bus is restored to a positive voltage which is dependent upon the condition of the contact and the condition of expected input devices at the contact. The bus voltage is measured in accordance with a logic which determines the condition of the contact and the condition of expected input devices at the contact. Data signals for functional testing of the device under test are can be applied to the bus through an isolating driver which preserves the logic of the contact test.

73. 发明授权

US6034568A Broadband dc amplifier technique with very low offset voltage 失效
标题翻译：宽带直流放大器技术具有非常低的失调电压
公开(公告)号：US6034568A
公开(公告)日：2000-03-07
申请号：US97484
申请日：1998-06-15
申请人： Anthony R. Bonaccio , Michel S. Michail , W. David Pricer
发明人： Anthony R. Bonaccio , Michel S. Michail , W. David Pricer
IPC分类号： H03F1/48 , H03F3/45
CPC分类号： H03F1/483
摘要： An operational amplifier with two differential input stages is used to separately achieve low offset voltage and broad bandwidth characteristics. One input stage addresses dc and low frequency signals while the other addresses broadband frequencies. All transistors forming the dc stage are biased in the sub-threshold region. Following the two differential input stages, the signal paths are recombined in a capacitive cross-over network that provides outputs for subsequent amplification. The cross over frequency is adjustable from 15 kHz to 50 kHz using small practical values for the cross-over capacitor. The gain balance between the two input stages is adjustable by resistors and/or predetermined width/length ratios of the operational amplifier transistors.
摘要翻译：具有两个差分输入级的运算放大器用于分别实现低失调电压和宽带宽特性。一个输入级用于解决直流和低频信号，而其他输入级则处理宽带频率。形成直流级的所有晶体管都被偏置在子阈值区域中。在两个差分输入级之后，信号路径在电容交叉网络中重新组合，提供用于后续放大的输出。交叉频率的交叉电容可以使用小的实际值从15 kHz到50 kHz进行交叉。两个输入级之间的增益平衡可通过运算放大器晶体管的电阻和/或预定的宽度/长度比来调节。

74. 发明授权

US5548452A Quad burst servo demodulator with adjustable slew rate for hard disk drives 失效
公开(公告)号：US5548452A
公开(公告)日：1996-08-20
申请号：US356984
申请日：1994-12-15
申请人： Anthony R. Bonaccio
发明人： Anthony R. Bonaccio
IPC分类号： G01R19/04 , G11B5/596 , G11B21/10 , G11B5/09
CPC分类号： G11B5/59688 , G01R19/04 , G11B21/10 , G11B5/59611
摘要： A quad burst servo demodulator with adjustable slew rate for hard disk drives. The quad burst servo demodulator includes a peak voltage detecting system for detecting the peak voltages of an input signal, a plurality of storage capacitors for holding voltages proportional to the peak voltages observed by the peak voltage detecting system, and a programmable current source for charging (via an adjustable slew rate) the storage capacitors to voltages proportional to the detected peak voltages of the input signal.

75. 发明授权

US5532619A Precision level shifter w/current mirror 失效
标题翻译：精密电平转换器带电流镜
公开(公告)号：US5532619A
公开(公告)日：1996-07-02
申请号：US356816
申请日：1994-12-15
申请人： Anthony R. Bonaccio
发明人： Anthony R. Bonaccio
IPC分类号： G05F3/26 , H03K19/018 , H03K19/20
CPC分类号： H03K19/01806 , G05F3/265
摘要： A level shifter circuit for converting an input signal referenced to the least positive power supply (typically ground) to an output signal referenced to a higher, more usable voltage. The level shifter circuit generally includes a current mirror arrangement for coupling first and second current legs. The first current leg includes an NPN bipolar transistor arranged in series with a resistor R and a PNP bipolar transistor, wherein the NPN and PNP transistors have base inputs V.sub.ref and V.sub.in, respectively. The second current leg comprises a series arrangement of a diode-connected NPN bipolar transistor, a resistor R and a diode-connected NPN bipolar transistor. An output voltage (V.sub.OUT =V.sub.ref -V.sub.in), is taken at the collector of the diode-connected NPN transistor in the second current leg.
摘要翻译：电平移位器电路，用于将参考最小正电源（典型地为接地）的输入信号转换为以较高可用电压为参考的输出信号。电平移位器电路通常包括用于耦合第一和第二电流支路的电流镜装置。第一电流支路包括与电阻器R和PNP双极晶体管串联布置的NPN双极晶体管，其中NPN和PNP晶体管分别具有基极输入Vref和Vin。第二电流支路包括二极管连接的NPN双极晶体管，电阻器R和二极管连接的NPN双极晶体管的串联装置。输出电压（VOUT = Vref-Vin）取自第二个电流支路中二极管连接的NPN晶体管的集电极。

76. 发明授权

US5043674A Differential receiver with high common-mode range 失效
标题翻译：差分接收机具有高共模范围
公开(公告)号：US5043674A
公开(公告)日：1991-08-27
申请号：US516607
申请日：1990-04-30
申请人： Anthony R. Bonaccio , John E. Gersbach
发明人： Anthony R. Bonaccio , John E. Gersbach
IPC分类号： H03F3/343 , H03F3/45
CPC分类号： H03F3/45479
摘要： This describes a differential amplifier for producing an output current proportional to the differential input voltage regardless of the common-mode input voltage and comprises two identical voltage networks coupled between differential voltage inputs and to common differential current outputs and a common bias circuit. The described transmission line circuit operates as a transmission line receiver circuit with a high degree of common-mode rejection that will work in a high input signal voltage environment and in which both true and complement outputs can be developed such that their signal responses are additive and their common-mode responses subtractive. The circuit thus converts the input voltage to an input current while isolating the sensing circuit from common-mode input voltages which may be in excess of the breakdown voltage of the individual components of the circuit and the power supplies powering up the sensing circuit.

77. 发明授权

US4782300A Differential transceiver with line integrity detection 失效
标题翻译：差分收发器具有线路完整性检测功能
公开(公告)号：US4782300A
公开(公告)日：1988-11-01
申请号：US835674
申请日：1986-03-03
申请人： Anthony R. Bonaccio , Brent A. Carlson , Lloyd S. Heim , Kenneth A. Moe , Steven A. Schmitt
发明人： Anthony R. Bonaccio , Brent A. Carlson , Lloyd S. Heim , Kenneth A. Moe , Steven A. Schmitt
IPC分类号： G01R31/02 , H04L25/08 , H04B3/46 , H04B17/00
CPC分类号： H04L25/085
摘要： A differential transceiver transmission line integrity detector detects both open and short circuits in the transmission lines. The two transmission lines are terminated at both ends by selected impedances. A driver coupled to each of the transmission lines drives the lines with data signals. Signal levels on the lines are detected and compared with expected levels to generate line integrity indications. Both open and short conditions are detected and indicated by the line integrity indications.
摘要翻译：差分收发器传输线完整性检测器检测传输线路中的开路和短路。两条传输线通过选择的阻抗在两端终止。耦合到每个传输线的驱动器用数据信号驱动线。检测线路上的信号电平并将其与预期电平进行比较以产生线路完整性指示。通过线路完整性指示检测和指示开放和短路条件。

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