公开(公告)号：US3936819A

公开(公告)日：1976-02-03

申请号：US322333

申请日：1973-01-10

Applicant: Philippe Angelle ,  Georges Lefevre

Inventor： Philippe Angelle ,  Georges Lefevre

IPC: H03M1/40 ,  G11C27/02 ,  H03F3/72 ,  H03G3/20 ,  H03M1/00 ,  H03K13/02

CPC classification number: H03M1/00 ,  G11C27/026 ,  H03F3/72 ,  H03M2201/01 ,  H03M2201/14 ,  H03M2201/16 ,  H03M2201/2241 ,  H03M2201/2283 ,  H03M2201/4105 ,  H03M2201/4135 ,  H03M2201/4204 ,  H03M2201/4212 ,  H03M2201/4233 ,  H03M2201/4262 ,  H03M2201/534 ,  H03M2201/712 ,  H03M2201/715 ,  H03M2201/8124

Abstract: An electronic device for amplifying, with automatic gain control by discr values, analogue signal samples and thereafter preferably effecting analogue-to-digital conversion of the samples, consists of an amplifier circuit, a comparator circuit, and a delay store circuit. The amplifier has a basic gain during a gain control or gain ranging operation, and supplies an output sample amplified with sufficient gain to bring it into the region of a predetermined voltage. The comparator circuit compares the output of the amplifier circuit with a reference and supplies an output in accordance with the result of the comparison. For analogue-to-digital conversion the amplifier circuit supplies for an input signal U an output signal 2U - VQ, where VQ is the quantification voltage, or, in other embodiments a signal 2U.

Abstract translation: 用于通过离散值的自动增益控制来放大模拟信号样本的电子装置，其后优选地进行样本的模数转换，由放大器电路，比较器电路和延迟存储电路组成。 放大器在增益控制或增益测距操作期间具有基本增益，并且以足够的增益提供放大的输出样本，使其进入预定电压的区域。 比较器电路将放大器电路的输出与参考值进行比较，并根据比较结果提供输出。 对于模拟到数字转换，放大器电路为输入信号U提供输出信号2U-VQ，其中VQ是量化电压，或者在其它实施例中为信号2U。

公开(公告)号：US4010422A

公开(公告)日：1977-03-01

申请号：US409425

申请日：1973-10-25

Applicant: Kornelis Jan Wouda

Inventor： Kornelis Jan Wouda

IPC: H03M1/00 ,  H04B14/04 ,  H04B1/04

CPC classification number: H04B14/04 ,  H03M1/00 ,  H04B14/048 ,  H03M2201/01 ,  H03M2201/14 ,  H03M2201/16 ,  H03M2201/196 ,  H03M2201/2344 ,  H03M2201/4105 ,  H03M2201/4135 ,  H03M2201/4204 ,  H03M2201/4212 ,  H03M2201/4225 ,  H03M2201/4233 ,  H03M2201/425 ,  H03M2201/4262 ,  H03M2201/52 ,  H03M2201/523 ,  H03M2201/534 ,  H03M2201/60 ,  H03M2201/6121 ,  H03M2201/712 ,  H03M2201/715 ,  H03M2201/8124

Abstract: A non-linear pulse code modulator wherein input signals are coded into digital representations of amplitude range segments and amplitude in excess of the minimum amplitude within the respective range segment uses a first analog-to-digital converter having a sawtooth-shaped control characteristic to determine the amplitude range segment from an input signal sample. The output of the first analog-to-digital converter is used to effectively divide the signal sample by a factor 2.sup.n, where n corresponds to the determined range. The result of the division is then converted in a second analog-to-digital conversion to a digital signal that is combined with the digital range segment signal for transmission thereof.

公开(公告)号：US4626827A

公开(公告)日：1986-12-02

申请号：US475405

申请日：1983-03-15

Applicant: Masatsugu Kitamura ,  Mitsuaki Tanaka ,  Hiroyuki Takekura

Inventor： Masatsugu Kitamura ,  Mitsuaki Tanaka ,  Hiroyuki Takekura

IPC: H03M1/00 ,  H04B14/04 ,  H03K13/02

CPC classification number: H03M1/00 ,  H04B14/046 ,  H03M2201/02 ,  H03M2201/162 ,  H03M2201/196 ,  H03M2201/198 ,  H03M2201/20 ,  H03M2201/3115 ,  H03M2201/4105 ,  H03M2201/4135 ,  H03M2201/4225 ,  H03M2201/4233 ,  H03M2201/4262 ,  H03M2201/531 ,  H03M2201/532 ,  H03M2201/534 ,  H03M2201/535 ,  H03M2201/648 ,  H03M2201/712 ,  H03M2201/715 ,  H03M2201/8128 ,  H03M2201/834

Abstract: A data compression system comprises an analog-to-digital converter for quantizing the analog signal at a first sampling frequency into a series of digital samples and a memory for storing the digital samples. A control circuit generates a sampling datum indicating a variable sampling frequency lower than the first sampling frequency as a function of the instantaneous frequency of the analog signal for selecting digital samples from the memory, reads the selected digital samples out of the memory means in response to the sampling datum, and forms the sampling datum and the selected digital samples into a data set. A series of data sets may be transmitted to a receiving end of the system or stored in a recording medium. The sampling datum is used to indicate the point at which the digital sample is converted to a corresponding analog value.

Abstract translation: 数据压缩系统包括用于将第一采样频率的模拟信号量化成一系列数字样本的模数转换器和用于存储数字样本的存储器。 控制电路根据用于从存储器中选择数字样本的模拟信号的瞬时频率的函数产生指示低于第一采样频率的可变采样频率的采样数据，以响应于从存储器装置读出所选择的数字样本 采样数据，并将采样数据和所选择的数字样本组成数据集。 一系列数据集可以传送到系统的接收端或存储在记录介质中。 采样数据用于指示数字采样转换为相应模拟值的点。

公开(公告)号：US20180097526A1

公开(公告)日：2018-04-05

申请号：US15567806

申请日：2015-07-02

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Chung-Ping Ku ,  Mohamed Amin Bemat

IPC: H03M1/12 ,  G01R19/25

CPC classification number: H03M1/1245 ,  G01R19/2503 ,  G01R19/2509 ,  H03M2201/715

Abstract: According to some examples, systems and methods are provided for voltage sampling using one or more analog-to-digital converters (ADCs) to sense divided portions of a sampled voltage (e.g., of an output signal), using the one or more analog-to-digital converters to provide a plurality of digital values representative of those divided portions, and combining the plurality of digital values to produce a total digital value representative of the sampled voltage. Such systems and methods can achieve a high resolution for the total digital value while permitting use of ADCs that have a resolution lower than would otherwise be required to achieve the high resolution.