JPS5828433U

JPS5828433U - DPCM analog to digital converter

Info

Publication number: JPS5828433U
Application number: JP12226481U
Authority: JP
Inventors: 中村　「のぼる」
Original assignee: 日立電子株式会社
Priority date: 1981-08-17
Filing date: 1981-08-17
Publication date: 1983-02-24

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

図は本考案によるＤＰＣＭ方式のアナログ・ディジタル
変換器の一実施例を示す要部のブロック図である。１・・・・・・アナログ加算器、２・・曲比較形量子化
回路、３・・・・・・ラッチ回路、４・・・・・・符号
化回路、５・・・・・・ディジタル加算器、６・・・・
・・Ｄ−Ａ変換器、７・・・・・・レジスタ、８・・・
・・・ラッチ回路。The figure is a block diagram of essential parts showing an embodiment of a DPCM type analog-to-digital converter according to the present invention. 1... Analog adder, 2... Song comparison type quantization circuit, 3... Latch circuit, 4... Encoding circuit, 5... Digital Adder, 6...
...D-A converter, 7...Register, 8...
...Latch circuit.

Claims

[Scope of utility model registration request]

an analog adder that outputs a difference signal between the current analog input signal and the previous analog signal; a quantization circuit that converts the difference signal output from the analog adder into an analog-to-digital converter; and a digital converter of the quantization circuit. a latch circuit that holds an output, an encoding circuit that encodes the latch output of the latch circuit, a digital adder that adds the encoded output of the encoding circuit and previous data; a D-A converter that converts the addition output of the adder into digital-to-analog and outputs the analog signal as one input signal of the analog adder; and a register that stores the addition output of the digital adder. , a latch circuit that holds the encoded output of the encoding circuit, extracts the addition output stored in the register as a digital output signal, and outputs the encoded output held in the latch circuit as a digital differential output signal. A DPCM type analog-to-digital converter characterized in that it can be taken out.