JPS60169946U

JPS60169946U - Digital/analog converter

Info

Publication number: JPS60169946U
Application number: JP5745484U
Authority: JP
Inventors: 李　宇済; 藤田　好一; 小林　資
Original assignee: 株式会社ケンウッド
Priority date: 1984-04-20
Filing date: 1984-04-20
Publication date: 1985-11-11

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]

第１図は本考案の一実施例の構成を示すブロック図。第
２図はＤ／Ａ変換器本体の変換タイムチャート。１・・・Ｄ／Ａ変ｍ器本体、３・・・サンプルスイッチ
、４・・・反転増幅器、５・・・バイアス抵抗、６・・
・ロー−パスフィルタ、７・・・非反転増幅器、１０お
よび１２・・・増幅器、１１・・・サンプルホールド回
路、１３・・・スイッチ、１５・・・インバータ、１６
・・・ミュートスイッチ。補正　昭５９．５．１９実用新案登録請求の範囲を次のように補正する。 ■実用新案登録請求の範囲デジタル／アナログ変換器本体と、デジタル／アナログ
変換器本体の出力からＰＡＭ波を得る手段とを備えてな
るデジタル／アナログ変換装置において、ミュート中デ
ジタル／アナログ変換装置の出力をサンプリングしかつ
次のミュｍｔでホールドするサンプルホールド回路と、
サンプルホールド回路の出力を負帰還してＰＡＭ波と合
成する合成手段とを備えてなることを特徴とするデジタ
ル／アナログ変換装置。FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. Figure 2 is a conversion time chart of the D/A converter itself. 1... D/A transformer body, 3... Sample switch, 4... Inverting amplifier, 5... Bias resistor, 6...
-Low-pass filter, 7... Non-inverting amplifier, 10 and 12... Amplifier, 11... Sample and hold circuit, 13... Switch, 15... Inverter, 16
...Mute switch. Amendment May 19, 1980 The scope of claims for utility model registration is amended as follows. ■Claims for Utility Model Registration In a digital/analog converter comprising a digital/analog converter main body and means for obtaining a PAM wave from the output of the digital/analog converter main body, the output of the digital/analog converter during muting. a sample and hold circuit that samples and holds it at the next mt;
1. A digital/analog conversion device comprising a synthesis means for negative feedback of the output of the sample and hold circuit and synthesis with a PAM wave.

Claims

[Scope of utility model registration request]

In a digital/analog converter comprising a digital/analog converter main body and means for obtaining a PAM wave from the output of the digital/analog converter main body, the output of the digital/analog converter is sampled during muting, and the next mute is sampled. A digital/analog conversion device comprising: a sample-hold circuit that holds the sample-and-hold circuit until one moment; and a synthesizing means that negatively feeds back the output of the sample-hold circuit and synthesizes it with a PAM wave.