公开(公告)号：US20140152484A1

公开(公告)日：2014-06-05

申请号：US14172718

申请日：2014-02-04

Applicant: PANASONIC CORPORATION

Inventor： Shiro DOSHO ,  Masao TAKAYAMA

IPC: H03M1/50 ,  H03K5/153

CPC classification number: H03M1/50 ,  G04F10/005 ,  H03K5/153

Abstract: An oversampling time-to-digital converter includes an input pulse generation circuit generating two pulse signals, a reference pulse generation circuit generating two pulse signals, a swap circuit swapping two pulse signals, a multiplexer selecting an output of the input pulse generation circuit or the swap circuit, a time-to-current conversion circuit outputting two pulse currents in accordance with an output of the multiplexer, a current mirror circuit whose input and output terminals receive the two pulse currents, an integration circuit integrating a differential current between the pulse current connected to the output terminal of the current mirror circuit and an output current of the current mirror circuit, and a comparison circuit comparing an output signal of the integration circuit to a threshold voltage. An output signal of the comparison circuit is given to the swap circuit as a control signal.

Abstract translation: 过采样时间 - 数字转换器包括产生两个脉冲信号的输入脉冲产生电路，产生两个脉冲信号的参考脉冲产生电路，交换两个脉冲信号的交换电路，选择输入脉冲发生电路或 交换电路，根据多路复用器的输出输出两个脉冲电流的时间到电流转换电路，其输入和输出端子接收两个脉冲电流的电流镜电路;积分电路，其在脉冲电流之间积分差分电流 连接到电流镜电路的输出端和电流镜电路的输出电流，以及将积分电路的输出信号与阈值电压进行比较的比较电路。 将比较电路的输出信号作为控制信号提供给交换电路。

公开(公告)号：US20140340250A1

公开(公告)日：2014-11-20

申请号：US14447315

申请日：2014-07-30

Applicant: PANASONIC CORPORATION

Inventor： Shiro DOSHO ,  Masao TAKAYAMA ,  Takuji MIKI

IPC: G06G7/184 ,  H03H19/00 ,  H03M3/02

CPC classification number: G06G7/184 ,  H03H19/004 ,  H03K3/0315 ,  H03M3/02

Abstract: A time integrator integrates time axis information represented by a phase difference between two signals. The time integrator includes a pulse generation circuit configured to convert a time difference between edges of two input signals to a difference between pulse widths of two pulse signals, and to output the two pulse signals, a load circuit having load characteristics changed by the two pulse signals, and an oscillation circuit coupled to the load circuit, and having an oscillation frequency changing in accordance with the load characteristics of the load circuit. An output of the oscillation circuit is output as a result of time integration.

Abstract translation: 时间积分器集成了由两个信号之间的相位差表示的时间轴信息。 时间积分器包括：脉冲发生电路，被配置为将两个输入信号的边沿之间的时间差转换为两个脉冲信号的脉冲宽度之间的差，并输出两个脉冲信号，具有由两个脉冲变化的负载特性的负载电路 信号和耦合到负载电路的振荡电路，并且根据负载电路的负载特性使振荡频率发生变化。 作为时间积分的结果输出振荡电路的输出。

公开(公告)号：US20140320329A1

公开(公告)日：2014-10-30

申请号：US14265148

申请日：2014-04-29

Applicant: PANASONIC CORPORATION

Inventor： Shiro DOSHO ,  Masao TAKAYAMA

IPC: G04F10/00 ,  H03M1/18

CPC classification number: G04F10/005 ,  H03L7/0814 ,  H03L7/087 ,  H03L7/18 ,  H03M1/00 ,  H03M1/12 ,  H03M1/18 ,  H03M2201/4233

Abstract: An edge detector includes flip-flops receiving phase signals of a ring oscillator, a resetter canceling the reset states of the flip-flops at the edge timing of an input signal, and a logical operator performing a logical operation on output signals of the flip-flops. A phase state detector detects a phase state of the ring oscillator occurring at the edge timing of the input signal based on the output signals of the flip-flops. A time-to-digital converter converts an edge interval between the input signal and an output signal of the logical operator into a digital value. A latch latches a value of a counter counting the number of cycles of an output signal of the ring oscillator, at the edge timing of the input signal. An operator calculates a digital value of a received signal from output signals of the latch, the phase state detector, and the time-to-digital converter.

Abstract translation: 边沿检测器包括接收环形振荡器的相位信号的触发器，在输入信号的边缘定时取消触发器的复位状态的复位器，以及对触发器的输出信号执行逻辑运算的逻辑运算器， 翻牌 相位状态检测器基于触发器的输出信号来检测在输入信号的边缘定时处发生的环形振荡器的相位状态。 时间 - 数字转换器将输入信号和逻辑运算器的输出信号之间的边沿间隔转换为数字值。 在输入信号的边缘定时处，锁存器锁存计数环形振荡器的输出信号的周期数的计数器的值。 操作者根据锁存器，相位状态检测器和时间 - 数字转换器的输出信号计算接收信号的数字值。

公开(公告)号：US20130335251A1

公开(公告)日：2013-12-19

申请号：US13942478

申请日：2013-07-15

Applicant: Panasonic Corporation

Inventor： Shiro DOSHO ,  Masao TAKAYAMA ,  Takuji MIKI

IPC: H03M1/50

CPC classification number: H03M1/50 ,  G04F10/005

Abstract: A time-to-digital conversion circuit for converting a time difference between two input signals to a 1-bit digital value, and adjusting the time difference between the two input signals to generate two output signals includes: a phase comparator configured to compare phases of the two input signals with each other to generate the digital value; a phase selector configured to output one of the two input signals which has a leading phase as a first signal, and the other of the two input signals which has a lagging phase as a second signal; and a delay unit configured to output the first signal with a delay, wherein the time-to-digital conversion circuit outputs the signal output from the delay unit and the second signal as the two output signals.

Abstract translation: 一种用于将两个输入信号之间的时间差转换成1位数字值并且调节两个输入信号之间的时间差以产生两个输出信号的时间 - 数字转换电路，包括：相位比较器，被配置为比较 两个输入信号彼此产生数字值; 相位选择器，被配置为输出具有前导相位的两个输入信号中的一个作为第一信号，并且具有滞后相位的两个输入信号中的另一个作为第二信号; 以及延迟单元，被配置为以延迟输出第一信号，其中时间 - 数字转换电路输出从延迟单元输出的信号和第二信号作为两个输出信号。

公开(公告)号：US20130154867A1

公开(公告)日：2013-06-20

申请号：US13770871

申请日：2013-02-19

Applicant: PANASONIC CORPORATION

Inventor： Shiro DOSHO ,  Masao TAKAYAMA ,  Takuji MIKI

IPC: H03M1/50

CPC classification number: H03M1/50 ,  H03M1/1215

Abstract: An A/D converter having high accuracy and high throughput irrespective of characteristic variations of analog circuits is provided. The A/D converter includes a voltage-to-time converter configured to synchronize with a sampling clock signal and convert an input analog voltage to a time difference between two signals, and a plurality of time-to-digital converters each configured to convert the time difference between the two signals to a digital value. The plurality of time-to-digital converters operate in an interleaved manner.

Abstract translation: 提供了与模拟电路的特性变化无关的具有高精度和高吞吐量的A / D转换器。 A / D转换器包括电压 - 时间转换器，其被配置为与采样时钟信号同步并将输入模拟电压转换为两个信号之间的时间差，并且多个时间 - 数字转换器被配置为将 两个信号之间的时差就是一个数字值。 多个时间 - 数字转换器以交错的方式工作。