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41. 发明授权

US5546245A Data storage apparatus with an A/D converter having a reference voltage control based upon a signal before and after discrimination 失效
标题翻译：具有A / D转换器的数据存储装置具有基于鉴别前后的信号的基准电压控制
公开(公告)号：US5546245A
公开(公告)日：1996-08-13
申请号：US074297
申请日：1993-06-09
申请人： Naoki Sato
发明人： Naoki Sato
IPC分类号： G11B5/035 , G11B5/09 , G11B20/10 , H03M1/18 , H03M1/62 , H03M1/84 , H03M1/88
CPC分类号： H03M1/182 , G11B20/10009 , G11B5/035 , G11B5/09
摘要： A data storage apparatus and method that allows the signal processing circuit to be in integrated form, so that the magnetic storage system may be reduced in size with increased performance is described. The apparatus includes a reproducing head that reproduces information stored on a recording medium, a preamplifier that amplifies the output of the reproducing head, and a low-pass filter. An A/D converter converts the output for the low-pass filter to a digital signal and has a reference voltage. A discriminator is coupled to an output of the A/D converter and discriminates the digital signal. A circuit, coupled to the discriminator, provides negative feedback control of the reference voltage of the A/D converter as a function of the digital signal before the discrimination by the discriminator and the digital signal that has been discriminated by the discriminator.
摘要翻译：一种允许信号处理电路集成的数据存储装置和方法，从而可以以增加的性能来减小磁存储系统的尺寸。该装置包括再现记录介质上存储的信息的再现头，放大再现头的输出的前置放大器和低通滤波器。 A / D转换器将低通滤波器的输出转换为数字信号，并具有参考电压。鉴别器耦合到A / D转换器的输出端并鉴别数字信号。耦合到鉴别器的电路在鉴别器鉴别之前的数字信号和已被鉴别器识别的数字信号之间提供对A / D转换器参考电压的负反馈控制。

42. 发明授权

US5389927A Method and apparatus for control of an analog to digital converter 失效
标题翻译：用于控制模数转换器的方法和装置
公开(公告)号：US5389927A
公开(公告)日：1995-02-14
申请号：US68324
申请日：1993-05-28
申请人： William J. Turney , Paul H. Gailus , Mark A. Gannon
发明人： William J. Turney , Paul H. Gailus , Mark A. Gannon
IPC分类号： H03M1/18
CPC分类号： H03M1/182
摘要： An analog signal having an input level is provided. The analog signal is converted into a digitized representation of the analog signal in an analog to digital converter (105) that uses an operating range. The digitized representation of the analog signal is processed (107) to determine the input level for the analog signal. The input level for the analog signal is compared (109) with a reference signal to provide a comparison signal. The comparison signal is manipulated (111) to adjust the operating range.
摘要翻译：提供具有输入电平的模拟信号。在使用操作范围的模数转换器（105）中，模拟信号被转换为模拟信号的数字化表示。处理模拟信号的数字化表示（107）以确定模拟信号的输入电平。将模拟信号的输入电平与参考信号进行比较（109）以提供比较信号。操纵比较信号（111）以调整工作范围。

43. 发明授权

US4875049A Automatic level control circuit for an ad convertor 失效
标题翻译：广告转换器的自动电平控制电路
公开(公告)号：US4875049A
公开(公告)日：1989-10-17
申请号：US157154
申请日：1988-02-11
申请人： Yasuharu Yoshida
发明人： Yasuharu Yoshida
IPC分类号： H03G3/20 , H03M1/00 , H04L27/38
CPC分类号： H04L27/3809 , H03M1/182 , H03M1/365
摘要： An automatic level control circuit for a multi-level quadrature amplitude-modulated (QAM) demodulator having a QAM detector, which produces baseband in-phase (P) and quadrature (Q) signals in response to an input QAM camer wave, and two analog-digital (A/D) convertors which convert the Q and P signals into two parallel digital signals. Automatic level control of the input level of the baseband signal to the A/D convertor is maintained constant by the combination of a reference signal generator in a feed back loop with each A/D convertor. The A/D convertor produces a decoded digital signal and the reference voltage generator, in response to those signals, provides reference voltage to the A/D convertor that are optimized in response to variations in input signal level.
摘要翻译：一种具有QAM检测器的多电平正交幅度调制（QAM）解调器的自动电平控制电路，其响应于输入QAM摄像机产生基带同相（P）和正交（Q）信号，以及两个模拟数字（A / D）转换器，将Q和P信号转换为两个并行数字信号。通过在反馈回路中的参考信号发生器与每个A / D转换器的组合，将A / D转换器的基带信号的输入电平的自动电平控制保持恒定。 A / D转换器产生解码的数字信号，并且参考电压发生器响应于这些信号，向A / D转换器提供响应于输入信号电平变化而优化的参考电压。

44. 发明授权

US4188617A System for converting analog signals to multiplexed digital data 失效
标题翻译：用于将模拟信号转换为多路数字数据的系统
公开(公告)号：US4188617A
公开(公告)日：1980-02-12
申请号：US916287
申请日：1978-06-16
申请人： Jess F. Fauchier , William H. Seipp , Stephen E. Whiteside
发明人： Jess F. Fauchier , William H. Seipp , Stephen E. Whiteside
IPC分类号： G06F17/40 , H03M1/00 , G08C15/06
CPC分类号： H03M1/182
摘要： A system for providing digital data representative of a selected analog signal on the data lines of a programmable controller using a central processing unit. The system employs a conversion circuit which converts the input analog signal to digital data on output data terminals upon receipt of a conversion signal simultaneously with an analog signal and which creates a completion signal when the conversion is completed. The system can use at least two analog inputs that receive at least two analog conditions and convert a selected one of the analog conditions to an analog signal. Upon actuation of one of the input modules, the selected analog signal of the selected module is directed to the conversion circuit. After conversion, the conversion completion signal of a conversion circuit then deactivates the actuated input module for the next conversion cycle.
摘要翻译：一种用于使用中央处理单元在可编程控制器的数据线上提供表示所选模拟信号的数字数据的系统。该系统采用转换电路，该转换电路在与模拟信号同时接收转换信号时将输入的模拟信号转换成输出数据端子上的数字数据，并且当转换完成时产生完成信号。该系统可以使用至少两个模拟输入，其接收至少两个模拟条件并将所选择的一个模拟条件转换为模拟信号。在致动一个输入模块时，所选模块的所选模拟信号被引导到转换电路。在转换之后，转换电路的转换完成信号然后使激活的输入模块停用下一个转换周期。

45. 发明授权

US2966672A Multichannel selection device 失效
标题翻译：多通道选择装置
公开(公告)号：US2966672A
公开(公告)日：1960-12-27
申请号：US77037058
申请日：1958-10-29
申请人： LINK AVIATION INC
发明人： HORN HARRISON S
IPC分类号： H03M1/00
CPC分类号： H03M1/182

46. 发明授权

US2951202A Frequency meter apparatus 失效
标题翻译：频率计装置
公开(公告)号：US2951202A
公开(公告)日：1960-08-30
申请号：US62008756
申请日：1956-11-02
申请人： EPSCO INC
发明人： GORDON BERNARD M
IPC分类号： G01R23/09 , G05D3/20 , H03M1/00
CPC分类号： G05D3/20 , G01R23/09 , H03M1/182

47. 发明授权

US2806997A Circulating pulse coders 失效
标题翻译：循环脉冲编码器
公开(公告)号：US2806997A
公开(公告)日：1957-09-17
申请号：US57456256
申请日：1956-03-28
申请人： BELL TELEPHONE LABOR INC
发明人： CARBREY ROBERT L
IPC分类号： H03M1/00
CPC分类号： H03M1/504 , H03M1/182

48. 发明公开

US20240039542A1 High Gain Detector Techniques for High Bandwidth Low Noise Phase-Locked Loops 审中-公开
公开(公告)号：US20240039542A1
公开(公告)日：2024-02-01
申请号：US18482925
申请日：2023-10-09
申请人： Texas Instruments Incorporated
发明人： Michael Henderson Perrott , Robert Karl Butler
IPC分类号： H03L7/08 , H03L7/107 , H03L7/081 , H03L7/187 , H03L7/04 , G11C11/4093 , G11C11/4099 , H03M1/06 , H03M1/08 , H03M1/18
CPC分类号： H03L7/0807 , H03L7/1072 , H03L7/0816 , H03L7/187 , H03L7/04 , G11C11/4093 , G11C11/4099 , H03M1/0626 , H03M1/0687 , H03M1/0836 , H03M1/182
摘要： In described examples, a phase measurement circuit includes a first switch coupled between a power terminal and a phase measurement output, the first switch having a first switch control terminal coupled to an up input. The phase measurement circuit includes a second switch coupled between the phase measurement output, the second switch having a second switch control terminal coupled to a down input. The phase measurement circuit includes a first capacitor coupled between the power terminal and the phase measurement output, a second capacitor coupled between the phase measurement output and a ground terminal, and a charge pump circuit having a first control input, a second control input, and a charge pump output, the first control input coupled to the up input, the second control input coupled to the down input, and the charge pump output coupled to the phase measurement output.

49. 发明授权

US11888497B2 Successive approximation register analog-to-digital converter with embedded filtering 有权
公开(公告)号：US11888497B2
公开(公告)日：2024-01-30
申请号：US17893076
申请日：2022-08-22
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Debapriya Sahu , Pranav Sinha , Meghna Agrawal
IPC分类号： H03M1/06 , H03M1/46 , H03M1/18
CPC分类号： H03M1/462 , H03M1/0626 , H03M1/182 , H03M1/468
摘要： An analog-to-digital converter (ADC) includes a switched capacitor circuit, a comparator, and a control circuit. The switched capacitor circuit has a switch control input and an output, and includes switches coupled to the switch control input and coupled to capacitors. The comparator has an input coupled to the output of the switched capacitor circuit and has an output. The control circuit has a switch control output coupled to the switch control input, has an input coupled to the output of the comparator, and provides switch control signals at the switch control output. Responsive to the switch control signals, the switched capacitor circuit provides an output signal to the comparator that is based on a sample of an analog input signal acquired in a sample acquisition cycle and based on a digital sample value output by the ADC prior to the sample acquisition cycle.

50. 发明公开

US20230155597A1 Method of reducing conduction loss and switching loss applied in driving circuit and driving circuit using the same 审中-公开
公开(公告)号：US20230155597A1
公开(公告)日：2023-05-18
申请号：US18051015
申请日：2022-10-31
申请人： xMEMS Labs, Inc.
发明人： Jemm Yue Liang , Jing-Meng Liu , Hsi-Sheng Chen
IPC分类号： H03M1/00 , H03M1/38 , H03M1/18
CPC分类号： H03M1/002 , H03M1/38 , H03M1/182
摘要： A method, which is applied in a driving circuit including an analog-to-digital convertor (ADC) and a switching circuit including an inductor and coupled to a load, includes steps of: performing an analog-to-digital conversion on a load voltage of the load at a first rate; and producing at least a current pulse flowing through the inductor at a second rate. Wherein, each current pulse among the at least a current pulse is accomplished within a second cycle corresponding to the second rate, all of the at least a current pulse are accomplished within a first cycle corresponding to the first rate, and a first length of the first cycle is longer than twice of a second length of the second cycle.

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