JPS6435531U - - Google Patents

Info

Publication number
JPS6435531U
JPS6435531U JP12795587U JP12795587U JPS6435531U JP S6435531 U JPS6435531 U JP S6435531U JP 12795587 U JP12795587 U JP 12795587U JP 12795587 U JP12795587 U JP 12795587U JP S6435531 U JPS6435531 U JP S6435531U
Authority
JP
Japan
Prior art keywords
tape
reel
cassette mechanism
pulses
reel sensor
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.)
Pending
Application number
JP12795587U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP12795587U priority Critical patent/JPS6435531U/ja
Publication of JPS6435531U publication Critical patent/JPS6435531U/ja
Pending legal-status Critical Current

Links

Description

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

第１図は本考案によるカセツト・メカニズムの
テープ検出装置の一実施例を示した概略ブロツク
図、第２図は同実施例におけるマイクロコンピユ
ータによる処理を示したフローチヤート、第３図
は本考案に利用されるリールセンサのフオトリフ
レクタを示す図、第４図は同フオトリフレクタの
パツク有無によるパルスの変化を説明する図であ
る。 １……フオトリフレクタ発光部、２……フオト
リフレクタ受光部、３……巻取リール、４……巻
戻しリール、１０……リールセンサ、２０……制
御回路、２１……増幅回路、２２……マイクロコ
ンピユータ、２３……メカニズム・コントロール
回路、３０……カセツト・メカニズム。 FIG. 1 is a schematic block diagram showing an embodiment of a tape detection device for a cassette mechanism according to the present invention, FIG. FIG. 4 is a diagram showing the photoreflector of the reel sensor used, and is a diagram illustrating changes in pulses depending on whether the photoreflector is packed or not. DESCRIPTION OF SYMBOLS 1... Photoreflector light emitting part, 2... Photoreflector light receiving part, 3... Winding reel, 4... Rewinding reel, 10... Reel sensor, 20... Control circuit, 21... Amplifying circuit, 22... ...microcomputer, 23...mechanism control circuit, 30...cassette mechanism.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] リールモータ方式のカセツト・メカニズムにお
いて、リールモータの回転数を検出するリールセ
ンサと、該リールセンサの出力パルスをカウント
し、該パルスの周期ｔの大小によりテープの有無
を判断してメカニズムの制御を行なう制御回路と
を備えてなることを特徴とするカセツト・メカニ
ズムのテープ検出装置。 In a reel motor type cassette mechanism, a reel sensor detects the number of revolutions of the reel motor, the output pulses of the reel sensor are counted, and the presence or absence of tape is determined based on the magnitude of the period t of the pulses to control the mechanism. 1. A tape detection device for a cassette mechanism, comprising a control circuit for detecting a tape.
JP12795587U 1987-08-22 1987-08-22 Pending JPS6435531U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12795587U JPS6435531U (en) 1987-08-22 1987-08-22

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12795587U JPS6435531U (en) 1987-08-22 1987-08-22

Publications (1)

Publication Number Publication Date
JPS6435531U true JPS6435531U (en) 1989-03-03

Family

ID=31380851

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12795587U Pending JPS6435531U (en) 1987-08-22 1987-08-22

Country Status (1)

Country Link
JP (1) JPS6435531U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5829171A (en) * 1981-08-12 1983-02-21 Matsushita Electric Ind Co Ltd Magnetic recorder and reproducer
JPS5922263A (en) * 1982-07-28 1984-02-04 Mitsubishi Electric Corp Device for detecting cassette in cassette tape recorder or the like

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5829171A (en) * 1981-08-12 1983-02-21 Matsushita Electric Ind Co Ltd Magnetic recorder and reproducer
JPS5922263A (en) * 1982-07-28 1984-02-04 Mitsubishi Electric Corp Device for detecting cassette in cassette tape recorder or the like

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