JPS6344202U - - Google Patents
Info
- Publication number
- JPS6344202U JPS6344202U JP13823286U JP13823286U JPS6344202U JP S6344202 U JPS6344202 U JP S6344202U JP 13823286 U JP13823286 U JP 13823286U JP 13823286 U JP13823286 U JP 13823286U JP S6344202 U JPS6344202 U JP S6344202U
- Authority
- JP
- Japan
- Prior art keywords
- erasing
- envelope generator
- recording
- control
- spot
- 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
Links
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Management Or Editing Of Information On Record Carriers (AREA)
- Television Signal Processing For Recording (AREA)
Description
第１図は本考案に係る消去回路の一実施例を示
すブロツク図、第２図はエンベロープ発生器の回
路図、第３図は録音用エンベロープ発生器とスポ
ツトイレース用エンベロープ発生器の出力の特性
を示す図である。
１……発振器、２……電圧制御増幅器、３……
消去ヘツド、６……制御信号入力端子、７……入
力端子、８……出力端子、１１……録音用エンベ
ロープ発生器、１２……スポツトイレース用エン
ベロープ発生器、１３，１４……ダイオード。
Fig. 1 is a block diagram showing an embodiment of the erasing circuit according to the present invention, Fig. 2 is a circuit diagram of an envelope generator, and Fig. 3 is the output characteristics of the recording envelope generator and the spot erase envelope generator. FIG. 1... Oscillator, 2... Voltage control amplifier, 3...
Erasing head, 6...Control signal input terminal, 7...Input terminal, 8...Output terminal, 11...Envelope generator for recording, 12...Envelope generator for spot erase, 13, 14...Diode.
Claims (1)
動によつて移動させて消去するスポツトイレース
機能を備えたテープレコーダの消去ヘツドに消去
電流を供給する消去回路において、消去用信号を
発振する発振器と、この発振器の出力を制御用入
力端子に加わる制御電圧に応じた利得で増幅して
前記消去ヘツドに供給する電圧制御増幅器と、通
常テープ走行速度用の時定数を持つた録音用エン
ベロープ発生器と、この録音用エンベロープ発生
器よりも長い時定数を持つたスポツトイレース用
エンベロープ発生器と、通常の録音時には録音制
御信号を録音用エンベロープ発生器に出力し、ス
ポツトイレース時にはスポツトイレース制御信号
をスポツトイレース用エンベロープ発生器に出力
する制御回路とを有し、前記録音用エンベロープ
発生器とスポツトイレース用エンベロープ発生器
の出力を前記電圧制御増幅器の制御電圧としたこ
とを特徴とする消去回路。 An oscillator that oscillates an erasing signal in an erasing circuit that supplies erasing current to the erasing head of a tape recorder that has a spot erase function that erases part of the signal recorded on a tape by manually moving the tape. a voltage control amplifier which amplifies the output of this oscillator with a gain corresponding to a control voltage applied to a control input terminal and supplies the amplified signal to the erasing head; and a recording envelope generator having a time constant corresponding to the normal tape running speed. and a spot erase envelope generator that has a longer time constant than the recording envelope generator, and outputs a recording control signal to the recording envelope generator during normal recording, and outputs a spot erase control signal to the spot erase control signal during spot erase. An erasing circuit comprising: a control circuit for outputting to an erasing envelope generator, wherein outputs of the recording envelope generator and the spot erasing envelope generator are used as control voltages for the voltage control amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13823286U JPH0452803Y2 (en) | 1986-09-09 | 1986-09-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13823286U JPH0452803Y2 (en) | 1986-09-09 | 1986-09-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6344202U true JPS6344202U (en) | 1988-03-24 |
| JPH0452803Y2 JPH0452803Y2 (en) | 1992-12-11 |
Family
ID=31043025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13823286U Expired JPH0452803Y2 (en) | 1986-09-09 | 1986-09-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0452803Y2 (en) |
-
1986
- 1986-09-09 JP JP13823286U patent/JPH0452803Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0452803Y2 (en) | 1992-12-11 |
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