公开(公告)号：US11764801B2

公开(公告)日：2023-09-19

申请号：US17356552

申请日：2021-06-24

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Shiau-Wen Kao ,  Ying-Chung Chiu

IPC: H03M1/12 ,  H03M1/36 ,  G06F7/544 ,  H03M1/06 ,  H03M1/80 ,  G06F11/10 ,  G06F7/20

CPC classification number: H03M1/368 ,  G06F7/5443 ,  H03M1/069 ,  H03M1/802 ,  G06F7/20 ,  G06F11/1068

Abstract: A computing-in-memory circuit comprises a computing element array and an analog-to-digital conversion circuit. The computing element array is utilized for analog computation operations. The computing element array includes memory cells, a first group of computing elements, and a second group of computing elements. The first group of computing elements provides capacitance for analog computation in response to an input vector and receives data from the plurality of memory cells and the input vector. The second group of computing elements provides capacitance for quantization. Each computing element of the computing element array is based on a switched-capacitors circuit. The analog-to-digital conversion circuit includes a comparator and a conversion control unit. The comparator has a signal terminal, a reference terminal, and a comparison output terminal, wherein the first and second groups of computing elements are selectively coupled to the signal terminal and the reference terminal.

公开(公告)号：US20170243044A1

公开(公告)日：2017-08-24

申请号：US15590060

申请日：2017-05-09

Applicant: SHENZHEN HUIDING TECHNOLOGY CO., LTD.

Inventor： BO TAN ,  CHANG ZHAN

IPC: G06K9/00 ,  H03M1/36 ,  H03M1/00

CPC classification number: G06K9/001 ,  G06K9/0002 ,  G06K9/0008 ,  G06K9/6202 ,  H03M1/001 ,  H03M1/002 ,  H03M1/148 ,  H03M1/368 ,  H03M1/56

Abstract: The present disclosure provides a signal conversion circuit and fingerprint identification system. The signal conversion circuit is configured to generate a first digital signal according to a first analog signal, and includes a comparator and counter. The comparator includes a first input terminal configured to receive the first analog signal, a second input terminal connected to a reference voltage generator and configured to receive a reference voltage, and an output terminal configured to output a second digital signal. The counter is connected to the output terminal, and is configured to generate a first digital signal. The signal conversion circuit according to the present disclosure has the advantages of simple circuit structure, small circuit area, low cost and low power consumption.

公开(公告)号：US09285465B2

公开(公告)日：2016-03-15

申请号：US14418398

申请日：2013-06-10

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Hideki Sato ,  Takahiro Inoue

IPC: H03M1/18 ,  G01S7/486 ,  H03M1/06 ,  G01J1/44 ,  G01S17/10 ,  H03M1/36 ,  H03M1/12

CPC classification number: G01S7/4861 ,  G01J1/44 ,  G01J1/46 ,  G01S17/10 ,  H03M1/0607 ,  H03M1/12 ,  H03M1/181 ,  H03M1/368 ,  H03M1/52

Abstract: An analog-digital conversion circuit (ADC1) includes: a capacitor (C1); a charge and discharge control section (6) that puts, into the capacitor (C1), an electric charge corresponding to an input current of a first period and that causes an electric charge corresponding to an input current of a second period to be discharged from the capacitor (C1); and a digital conversion section (5) that converts an amount of electric charge of the capacitor (C1) into a digital signal.

Abstract translation: 模拟数字转换电路（ADC1）包括：电容器（C1）; 充放电控制部（6），其向电容器（C1）输入与第一期间的输入电流对应的电荷，并使与第二期间的输入电流对应的电荷从 电容器（C1）; 以及将电容器（C1）的电荷量转换为数字信号的数字转换部（5）。

公开(公告)号：US08188897B2

公开(公告)日：2012-05-29

申请号：US12916376

申请日：2010-10-29

Applicant: John Paul Strachan ,  Philip J. Kuekes

Inventor： John Paul Strachan ,  Philip J. Kuekes

IPC: H03M1/00

CPC classification number: H03M1/368 ,  Y10T29/49117

Abstract: An analog to digital converter includes a dielectric substrate, an analog input wire, and digital output wires, with a metal insulator extending over the digital output wires. The analog input wire can be in proximity to the dielectric substrate and can generate heat when an electric current flows through the analog input wire. The digital output wires can also be in proximity to the dielectric substrate. The metal insulator can have a phase transition temperature above which the metal insulator is electrically conductive to short circuit at least one of the digital output wires in contact with a metal insulator portion above the phase transition temperature. The digital output wires can be arranged at predetermined distances from the analog input wire such that output wires have varying short circuit thresholds.

Abstract translation: 模数转换器包括电介质基板，模拟输入线和数字输出线，金属绝缘体延伸在数字输出线上。 模拟输入线可以靠近电介质基板，并且当电流流过模拟输入线时可以产生热量。 数字输出线也可以靠近电介质基片。 金属绝缘体可以具有相对转变温度，在该相转变温度以上，金属绝缘体导电以使与数字输出线中至少一个与相变温度以上的金属绝缘体部分接触的短路。 数字输出线可以布置在距离模拟输入线的预定距离处，使得输出线具有变化的短路阈值。

公开(公告)号：US20060170580A1

公开(公告)日：2006-08-03

申请号：US11053756

申请日：2005-01-31

Applicant: Keir Lauritzen ,  Martin Peckerar ,  F. Perkins ,  Angela Hodge-Miller

Inventor： Keir Lauritzen ,  Martin Peckerar ,  F. Perkins ,  Angela Hodge-Miller

IPC: H03M1/12

CPC classification number: H03M1/368

Abstract: An analog to digital converter includes a resistor-divider network including a plurality of resistors, an arbel channel circuit configured to generate a voltage sawtooth signal as an output, a dc-offset disposed to couple a node of the resistor-divider network and the arbel-channel circuit. The converter further includes a voltage reference circuit configured to generate a reference voltage, and a differential comparator configured to compare the voltage sawtooth signal with the reference voltage to produce a digital output signal corresponding to the voltage sawtooth signal. Method of converting an analog signal to a digital signal is also described.

Abstract translation: 模数转换器包括包括多个电阻器的电阻分压网络，配置成产生电压锯齿波信号作为输出的阿贝尔通道电路，用于耦合电阻分压器网络的节点和阿贝 通道电路。 转换器还包括被配置为产生参考电压的电压参考电路，以及差分比较器，被配置为将电压锯齿波信号与参考电压进行比较，以产生对应于电压锯齿波信号的数字输出信号。 还描述了将模拟信号转换为数字信号的方法。

公开(公告)号：US20030058149A1

公开(公告)日：2003-03-27

申请号：US10201590

申请日：2002-07-22

Applicant: THE INDIAN INSTITUTE OF TECHNOLOGY (IItd)

Inventor： Jayadeva

IPC: H03M001/12 ,  H03M001/34

CPC classification number: H03M1/445 ,  H03M1/368 ,  H03M1/40

Abstract: The invention relates to an analog to digital converter computing all the bits in parallel or sequentially, without using decoding logic having an analog input and a digital output, wherein given the analog signal x, each bit can be computed by applying a formula containing a non linear periodic function which may be sine shaped or pulse shaped.

公开(公告)号：US06404365B1

公开(公告)日：2002-06-11

申请号：US09630418

申请日：2000-08-01

Applicant: Donald Glen Heflinger

Inventor： Donald Glen Heflinger

IPC: H03M100

CPC classification number: G02F7/00 ,  H03M1/368

Abstract: A fully optical converter for converting an analog signal into a digital signal includes an amplitude to optical wavelength converter for converting the analog signal into an optical signal which varies in wavelength in accordance with an amplitude of the analog signal, a splitter for applying the optical signal over a desired number of light paths, an interferometer connected to each of the light paths, unequal path lengths in each leg of the interferometers to allow optical interference to deliver a complementary sinusoidal transfer function to the optical signal to generate two complimentary output signals and a dual detector connected to each of the interferometers for generating a digital bit in response to the two complimentary output signals, wherein each of the digital bits together form a parallel digital word. The fully optically based converter is automatic and independent of interactive techniques, thus providing for an expedited conversion rate.

Abstract translation: 用于将模拟信号转换为数字信号的全光转换器包括：幅度至光波长转换器，用于将模拟信号转换为根据模拟信号的幅度在波长上变化的光信号，用于施加光信号的分路器 在所需数量的光路上，连接到每个光路的干涉仪，在干涉仪的每个支路中具有不相等的路径长度，以允许光学干涉将互补的正弦传递函数递送到光信号以产生两个互补的输出信号和 双重检测器连接到每个干涉仪以响应于两个互补输出信号产生数字位，其中每个数字位一起形成并行数字字。 完全基于光学的转换器是自动的并且独立于交互技术，从而提供加速的转换速率。

公开(公告)号：US5729233A

公开(公告)日：1998-03-17

申请号：US532100

申请日：1995-09-22

Applicant: Yong Gwan Kim

Inventor： Yong Gwan Kim

IPC: H03M1/36 ,  H03M1/38

CPC classification number: H03M1/368

Abstract: An analog-to-digital (A/D) converter using a charge-coupled device (CCD) for converting analog data to digital data, the CCD including a plurality of gates with potential wells, the number of gates corresponding to a number of bits of the digital data, and a size of each potential well corresponding to a given significant bit and being one-half the size of the potential well corresponding to the next most significant bit. The charges of an input analog signal are transmitted to respective potential wells. A plurality of driving circuits apply a voltage to the respective potential wells and output the charges stored in the respective potential wells as digital data.

Abstract translation: 一种使用电荷耦合器件（CCD）将模拟数据转换为数字数据的模数（A / D）转换器，CCD包括具有势阱的多个门，与多个位对应的门数 的数字数据，以及对应于给定有效位的每个势阱的大小，并且是对应于下一最高有效位的势阱的大小的一半。 输入模拟信号的电荷被发送到相应的电位阱。 多个驱动电路向各个电位阱施加电压，并输出存储在各个电位阱中的电荷作为数字数据。

公开(公告)号：US4647904A

公开(公告)日：1987-03-03

申请号：US605100

申请日：1984-04-30

Applicant: John C. Kuklewicz

Inventor： John C. Kuklewicz

IPC: H03M1/34 ,  H03M1/00 ,  H03M1/44 ,  H03K13/09

CPC classification number: H03M1/368

Abstract: A folding-type A/D converter for converting an analog input signal to an n-bit digital code, the A/D converter having a transfer function dividing the analog input signal into at least n-1 segments, each such n-1 segment having an amplitude level corresponding to the significance of a given bit of the digital code and having linear parts which are mirror images of one another extending over 2.sup.n transition levels L. The A/D converter includes voltage-current converters for converting voltage input signals to current signals, a plurality of circuit stages for producing the linear parts in the current domain in response to the current signals, and a converter for converting the linear parts to a logic 1 or logic 0 of the bits of the digital code.

Abstract translation: 一种用于将模拟输入信号转换成n位数字码的折叠型A / D转换器，所述A / D转换器具有将所述模拟输入信号划分为至少n-1个段的传递函数，每个这样的n-1段 具有对应于数字码的给定位的重要性的幅度电平，并且具有彼此延伸超过2n个过渡电平L的镜像的线性部分.A / D转换器包括电压 - 电流转换器，用于将电压输入信号转换为 电流信号，用于响应于当前信号产生当前域中的线性部分的多个电路级，以及用于将线性部分转换为数字代码的位的逻辑1或逻辑0的转换器。

公开(公告)号：US3065363A

公开(公告)日：1962-11-20

申请号：US988160

申请日：1960-02-19

Applicant: ITT

Inventor： MORRIS RIBNER

IPC: H03K3/45 ,  H03M1/36

CPC classification number: H03M1/368 ,  H03K3/45