JPS63169771U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案に係る音声多重記録回路のブロ
ツク図、第２図は磁気テープ上のトラツクパター
ンを示す図、第３図は従来回路のブロツク図、第
４図は音声多重信号の周波数スペクトラムを示す
図である。 ２……第１デコーダ、３……第２デコーダ、４
……切替スイツチ回路、５……第１信号記録回路
、６……第２信号記録回路、９……切替制御回路
。 Figure 1 is a block diagram of an audio multiplex recording circuit according to the present invention, Figure 2 is a diagram showing a track pattern on a magnetic tape, Figure 3 is a block diagram of a conventional circuit, and Figure 4 is a frequency spectrum of an audio multiplex signal. FIG. 2...first decoder, 3...second decoder, 4
...Switch circuit, 5...First signal recording circuit, 6...Second signal recording circuit, 9...Switching control circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 第１及び第２の放送方式の音声多重信号を復調
して、磁気テープのオーデイオトラツクとビデオ
トラツクへ夫々記録するＶＴＲに於いて、前記音
声多重信号を復調して夫々第１及び第２の音声信
号を作成する第１及び第２のデコーダ２，３と、
前記第１及び第７の音声信号を磁気テープへの記
録信号に変換して夫々回転磁気ヘツド及び固定磁
気ヘツドへ供給する第１及び第２の信号記録回路
５，６と、前記デコーダ２，３と信号記録回路５
，６との間に介装された切替スイツチ回路４と、
該スイツチ回路４に連繋した切替制御回路９とか
ら構成され、切替スイツチ回路４は、２つのデコ
ーダ中、何れか一方のデコーダの出力信号を第１
及び第２の信号記録回路５の両方へ同時に接続す
る第１切替状態と、両デコーダの各出力信号を異
なる信号記録回路５，６へ別々に接続する第２切
替状態とを、切替制御回路９によつて選択的に設
定され、切替制御回路９は、第１及び第２切替状
態の一方を選定する為の切替状態設定キー１６と
、第１切替状態にて両信号記録回路５，６へ接続
すべきデコーダを選定する為のモード設定キー１
５と、両設定キーの操作信号に基づき切替スイツ
チ回路４への切替信号を作成する論理制御部とか
ら構成されることを特徴とするＶＴＲの音声多重
記録回路。 In a VTR that demodulates audio multiplexed signals of first and second broadcasting systems and records them respectively on an audio track and a video track of a magnetic tape, the audio multiplexed signals are demodulated to produce first and second audio, respectively. first and second decoders 2, 3 that create signals;
first and second signal recording circuits 5 and 6 that convert the first and seventh audio signals into recording signals on magnetic tape and supply them to a rotating magnetic head and a fixed magnetic head, respectively; and the decoders 2 and 3. and signal recording circuit 5
, 6, and
The switch circuit 4 is composed of a switching control circuit 9 connected to the switch circuit 4, and the switch circuit 4 switches the output signal of one of the two decoders to the first one.
and the second signal recording circuit 5 simultaneously, and a second switching state in which each output signal of both decoders is connected separately to different signal recording circuits 5 and 6, the switching control circuit 9 The switching control circuit 9 is selectively set by a switching state setting key 16 for selecting one of the first and second switching states, and a switching state setting key 16 for selecting one of the first and second switching states, and a switching state setting key 16 for selecting one of the first and second switching states. Mode setting key 1 for selecting the decoder to be connected
5, and a logic control section for creating a switching signal to the changeover switch circuit 4 based on operation signals of both setting keys.