JPH0426419U - - Google Patents
Info
- Publication number
- JPH0426419U JPH0426419U JP6529790U JP6529790U JPH0426419U JP H0426419 U JPH0426419 U JP H0426419U JP 6529790 U JP6529790 U JP 6529790U JP 6529790 U JP6529790 U JP 6529790U JP H0426419 U JPH0426419 U JP H0426419U
- Authority
- JP
- Japan
- Prior art keywords
- tape
- control means
- lighting time
- pulse
- tape end
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
Description
第1図は本考案の一実施例を示すブロツク図、
第2図はその動作説明用タイミングチヤート、第
3図は本考案の他の実施例を示すブロツク図、第
4図はその動作説明用タイミングチヤート、第5
図は本考案の更に他の実施例を示すブロツク図、
第6図はその動作説明用タイミングチヤート、第
7図は従来のテープエンド検出装置を例示するブ
ロツク図である。
2……制御部、3……リールモータ、6……駆
動トランジスタ、8……発光ダイオード、10…
…フオトトランジスタ。
FIG. 1 is a block diagram showing an embodiment of the present invention.
Fig. 2 is a timing chart for explaining its operation, Fig. 3 is a block diagram showing another embodiment of the present invention, Fig. 4 is a timing chart for explaining its operation, and Fig. 5 is a timing chart for explaining its operation.
The figure is a block diagram showing still another embodiment of the present invention.
FIG. 6 is a timing chart for explaining its operation, and FIG. 7 is a block diagram illustrating a conventional tape end detection device. 2...Control unit, 3...Reel motor, 6...Drive transistor, 8...Light emitting diode, 10...
...Phototransistor.
Claims (1)
及び始端を光学的に検出するテープエンドセンサ
ーを有する磁気記録再生装置において、 上記発光素子をパルス点燈させる手段と、 テープ速度に応じてパルス点燈の時間を制御す
る制御手段と、を備えたことを特徴とするテープ
エンド検出装置。 (2) 上記制御手段が、テープ走行モードに応じ
てパルス点燈時間の制御を行うようになつている
ことを特徴とする請求項(1)に記載のテープエン
ド検出装置。 (3) 上記制御手段がリールパルス検出手段の出
力に応じてパルス点燈時間の制御を行うようにな
つていることを特徴とする請求項(1)に記載のテ
ープエンド装置。[Claims for Utility Model Registration] (1) In a magnetic recording and reproducing device having a tape end sensor that optically detects the end and start ends of a tape using a light emitting element and a light receiving element, means for lighting the light emitting element in pulses. A tape end detection device comprising: and a control means for controlling the pulse lighting time according to the tape speed. (2) The tape end detection device according to claim 1, wherein the control means controls the pulse lighting time depending on the tape running mode. (3) The tape end device according to claim (1), wherein the control means controls the pulse lighting time according to the output of the reel pulse detection means.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6529790U JPH0426419U (en) | 1990-06-19 | 1990-06-19 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6529790U JPH0426419U (en) | 1990-06-19 | 1990-06-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0426419U true JPH0426419U (en) | 1992-03-03 |
Family
ID=31597001
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6529790U Pending JPH0426419U (en) | 1990-06-19 | 1990-06-19 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0426419U (en) |
-
1990
- 1990-06-19 JP JP6529790U patent/JPH0426419U/ja active Pending
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