JPS64804U - - Google Patents
Info
- Publication number
- JPS64804U JPS64804U JP9563287U JP9563287U JPS64804U JP S64804 U JPS64804 U JP S64804U JP 9563287 U JP9563287 U JP 9563287U JP 9563287 U JP9563287 U JP 9563287U JP S64804 U JPS64804 U JP S64804U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- magnetic
- magnetic head
- filter
- variable gain
- 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
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000003786 synthesis reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 1
Description
第１図は本考案による磁気再生装置の第１実施
例を示すブロツク図、第２図及び第３図はそれぞ
れ第１実施例の動作の説明に供する周波数特性図
、第４図は本考案の第２実施例を示すブロツク図
、第５図は従来装置を示すブロツク図、第６図は
従来装置の欠点の説明に供する周波数特性図であ
る。
１……磁気テープ、２……磁気ヘツド、１０…
…スペーシングロス補償回路、１１……バンドパ
スフイルタ、１２……可変利得増幅回路、１３…
…加算回路、１４……エンベロープ検出回路、１
５……制御回路。
FIG. 1 is a block diagram showing a first embodiment of the magnetic reproducing device according to the present invention, FIGS. 2 and 3 are frequency characteristic diagrams for explaining the operation of the first embodiment, and FIG. 4 is a block diagram showing the first embodiment of the magnetic reproducing device according to the present invention. FIG. 5 is a block diagram showing the second embodiment, FIG. 5 is a block diagram showing a conventional device, and FIG. 6 is a frequency characteristic diagram for explaining the drawbacks of the conventional device. 1...Magnetic tape, 2...Magnetic head, 10...
... Spacing loss compensation circuit, 11 ... Band pass filter, 12 ... Variable gain amplifier circuit, 13 ...
... Addition circuit, 14 ... Envelope detection circuit, 1
5...Control circuit.
Claims (1)
アツプして再生する磁気再生装置において、 上記磁気ヘツドによるピツクアツプ信号の高周
波成分を波するフイルタと、 当該フイルタによる波信号を増幅する可変利
得増幅回路と、 上記ピツクアツプ信号のエンベロープに基づい
て上記磁気ヘツドと上記磁気テープとの間隙に応
じたスペーシングロスを検出するスペーシングロ
ス検出回路と、 検出されたスペーシングロスが大きくなればな
るほど上記可変利得増幅回路の利得を大きくする
ように制御する制御回路と、 上記磁気ヘツドによるピツクアツプ信号に上記
可変利得増幅回路の出力信号を重畳する合成回路
とを備えたことを特徴とする磁気再生装置。[Claim for Utility Model Registration] A magnetic reproducing device in which a magnetic head picks up and reproduces a recorded signal on a magnetic tape, comprising: a filter that waves the high frequency component of the picked up signal by the magnetic head; and a filter that amplifies the wave signal by the filter. a variable gain amplifier circuit that detects a spacing loss corresponding to a gap between the magnetic head and the magnetic tape based on the envelope of the pick-up signal; A magnetic device comprising: a control circuit that controls the gain of the variable gain amplifier circuit to be increased; and a synthesis circuit that superimposes an output signal of the variable gain amplifier circuit on a pickup signal from the magnetic head. playback device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9563287U JPS64804U (en) | 1987-06-22 | 1987-06-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9563287U JPS64804U (en) | 1987-06-22 | 1987-06-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS64804U true JPS64804U (en) | 1989-01-05 |
Family
ID=30960395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9563287U Pending JPS64804U (en) | 1987-06-22 | 1987-06-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS64804U (en) |
-
1987
- 1987-06-22 JP JP9563287U patent/JPS64804U/ja active Pending
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