JPS6128153U

JPS6128153U - PCM audio recording device

Info

Publication number: JPS6128153U
Application number: JP11039684U
Authority: JP
Inventors: 幸男山下; 幸晃西尾; 昭男小林
Original assignee: 三洋電機株式会社
Priority date: 1984-07-20
Filing date: 1984-07-20
Publication date: 1986-02-20

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図および第２図は８ミリビデオテープレコーダのヘ
ッドトレースおよびトラックの説明図、第３図以下の図
面はこの考案のＰＣＭオーディオ記録装置の−１実施例
を示１７′、第３図は記録時のブロック図、第４図は第
３図のゲートパルス作成回路の詳細なブロック図、第５
図ａ−ｇは第４因の動作説明用タイミングチャート、第
６図はトラックの記録部分の説明図、第７図は再生時の
ブロック図である。・１・・・入力部、１ａ〜１ｄ・・・オーディオ入力端
子、２ａ＊２ｂ・・・入力切換スイッチ、３ａ．３ｂ・
・・デジタル変換回路、４ａ，４ｂ・・・圧縮伸長回路
、５・・・ゲートパルス作成回路、６・・・ＲＦ入力端
子、７ａｔ７ｂ・・・アナログ変換回路、８ａ，８ｂ・
・・出力切換スイッチ、９・・・出力部、９ａ〜９ｄ・
・・−オーディオ出力端子。Figures 1 and 2 are explanatory diagrams of head traces and tracks of an 8mm video tape recorder. A block diagram at the time of recording, Figure 4 is a detailed block diagram of the gate pulse generation circuit in Figure 3, and Figure 5 is a detailed block diagram of the gate pulse generation circuit in Figure 3.
FIGS. a to g are timing charts for explaining the operation of the fourth factor, FIG. 6 is an explanatory diagram of the recording portion of the track, and FIG. 7 is a block diagram during reproduction.・1...Input section, 1a-1d...Audio input terminal, 2a*2b...Input selector switch, 3a. 3b・
...Digital conversion circuit, 4a, 4b...Compression/expansion circuit, 5...Gate pulse generation circuit, 6...RF input terminal, 7at7b...Analog conversion circuit, 8a, 8b...
...Output selector switch, 9...Output section, 9a to 9d.
...-Audio output terminal.

Claims

[Scope of utility model registration request]

an 8mm video tape recorder, a digital conversion unit that digitally converts audio signals of three or more channels to form a PCM signal of each channel;
a time axis compression unit that performs time axis compression processing on the PCM signal of each channel to form a compressed PCM signal of each channel; and compressing one field worth of audio signal of each channel during the recording period of each one track of the video tape. PC
a gate pulse forming section that forms a gate pulse for time-divisionally supplying the M signal to the rotating video head during recording; and a PCM.
a gate section for prohibiting the supply of video signals to the rotating video head during recording during dedicated recording, and compressed PCM audio signals for one field of each channel to each track of the video tape during PCM exclusive recording;
A PCM audio recording device that records signals in time division.