JPS587236U - Recording/playback equipment malfunction prevention circuit - Google Patents

Recording/playback equipment malfunction prevention circuit

Info

Publication number
JPS587236U
JPS587236U JP10098381U JP10098381U JPS587236U JP S587236 U JPS587236 U JP S587236U JP 10098381 U JP10098381 U JP 10098381U JP 10098381 U JP10098381 U JP 10098381U JP S587236 U JPS587236 U JP S587236U
Authority
JP
Japan
Prior art keywords
recording
reference signal
prevention circuit
malfunction prevention
playback equipment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP10098381U
Other languages
Japanese (ja)
Other versions
JPH0320935Y2 (en
Inventor
林　伸好
小森　嘉則
Original Assignee
三洋電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三洋電機株式会社 filed Critical 三洋電機株式会社
Priority to JP10098381U priority Critical patent/JPS587236U/en
Priority to CA000403367A priority patent/CA1187981A/en
Priority to US06/380,825 priority patent/US4523236A/en
Priority to EP19820104595 priority patent/EP0066252B1/en
Publication of JPS587236U publication Critical patent/JPS587236U/en
Application granted granted Critical
Publication of JPH0320935Y2 publication Critical patent/JPH0320935Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

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

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

第１図は本考案回路を備えるＶＴＲの構成ブロック図、
第２図は本考案の比較手段（判定回路）の１実施例の回
路構成図、第３図Ａ、　Ｂはその動作説明のための波形
図、第４図は比較手段の他の実施例の回路構成図、第５
図はその各部波形図である。 主な図番の説明、１５・・・パイロット信号形成回路（
基準信号発生器）、１４・・・録再手段（ヘッド）、３
９・・・帯域通過フィルタ（導出手段）、４１．４２・
・・判定回路（比較手段）、４３・・・掛算器、４４・
・・ロウパスフィルタ、４５・・・バイパスフィルタ、
４６・・・直流分形成回路、４８・・・スイッチングト
ランジスタ、５０・・・オペアンプ。FIG. 1 is a block diagram of the configuration of a VTR equipped with the circuit of the present invention.
FIG. 2 is a circuit diagram of one embodiment of the comparison means (judgment circuit) of the present invention, FIGS. 3A and B are waveform diagrams for explaining its operation, and FIG. 4 is a diagram of another embodiment of the comparison means. Circuit configuration diagram, 5th
The figure is a waveform diagram of each part. Explanation of main figure numbers, 15... Pilot signal forming circuit (
reference signal generator), 14... recording/reproducing means (head), 3
9... Bandpass filter (deriving means), 41.42.
... Judgment circuit (comparison means), 43... Multiplier, 44.
...Low pass filter, 45...Bypass filter,
46... DC component forming circuit, 48... Switching transistor, 50... Operational amplifier.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 基準信号を発生する基準信号発生器と、該基準信号を記
録再生する録再手段と：該録再手段より再生基準信号を
導出する手段と、該基準信号と該導出手段出力を比較し
該導出手段出力が再生基準信号である場合とそうでない
場合とで異なる出力を呈する比較手段とを備えてなる記
録再生機の誤動作防止回路。a reference signal generator for generating a reference signal; a recording/reproducing means for recording and reproducing the reference signal; a means for deriving a reproduction reference signal from the recording/reproducing means; and a means for deriving the reproduction reference signal by comparing the output of the reference signal with the output of the deriving means. A malfunction prevention circuit for a recording/reproducing machine, comprising comparison means that exhibits different outputs depending on whether the output of the means is a reproduction reference signal or not.
JP10098381U 1981-05-26 1981-07-06 Recording/playback equipment malfunction prevention circuit Granted JPS587236U (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP10098381U JPS587236U (en) 1981-07-06 1981-07-06 Recording/playback equipment malfunction prevention circuit
CA000403367A CA1187981A (en) 1981-05-26 1982-05-20 Video signal recording/reproducing apparatus
US06/380,825 US4523236A (en) 1981-06-19 1982-05-21 Video signal recording and reproducing apparatus, including means for discriminating the mode of multiplexing of an audio signal
EP19820104595 EP0066252B1 (en) 1981-05-26 1982-05-26 Video signal recording/reproducing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10098381U JPS587236U (en) 1981-07-06 1981-07-06 Recording/playback equipment malfunction prevention circuit

Publications (2)

Publication Number Publication Date
JPS587236U true JPS587236U (en) 1983-01-18
JPH0320935Y2 JPH0320935Y2 (en) 1991-05-07

Family

ID=29895655

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10098381U Granted JPS587236U (en) 1981-05-26 1981-07-06 Recording/playback equipment malfunction prevention circuit

Country Status (1)

Country Link
JP (1) JPS587236U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52156511U (en) * 1976-05-21 1977-11-28
JPS5575822U (en) * 1978-11-15 1980-05-24

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52156511U (en) * 1976-05-21 1977-11-28
JPS5575822U (en) * 1978-11-15 1980-05-24

Also Published As

Publication number Publication date
JPH0320935Y2 (en) 1991-05-07

Similar Documents

Publication Publication Date Title
JPS587236U (en) Recording/playback equipment malfunction prevention circuit
JPS60173106U (en) audio equipment
JPS58151990U (en) VTR cassette
JPS5925876U (en) Video tape recorder recording/playback circuit
JPS59153607U (en) magnetic recording and playback machine
JPS59121791U (en) magnetic recording and playback device
JPS58176469U (en) video equipment
JPS603932U (en) tape recorder
JPS6118684U (en) Video recording and playback device
JPS5992431U (en) Dubbing cassette tape recorder signal derivation circuit
JPS6031734U (en) Between songs on a tape recorder
JPS59168818U (en) Tape recorder recording/playback switching circuit
JPS6116702U (en) Fixed head type digital magnetic recording and reproducing device
JPS59145733U (en) Tape recorder music selection device
JPS5986009U (en) VTR playback circuit
JPS59157235U (en) tape recorder
JPS58105092U (en) music selection circuit
JPS6093183U (en) magnetic recording and reproducing device
JPS6032874U (en) Color burst reinsertion circuit
JPS59166572U (en) video tape recorder
JPS5953544U (en) magnetic recording and reproducing device
JPS5942595U (en) synchronized recording device
JPS5925696U (en) Dubbing tape recorder with radio
JPS59185710U (en) video tape recorder device
JPS60150639U (en) Still playback device