JPS57172510A - Control circuit of tape recorder - Google Patents
Control circuit of tape recorderInfo
- Publication number
- JPS57172510A JPS57172510A JP5659081A JP5659081A JPS57172510A JP S57172510 A JPS57172510 A JP S57172510A JP 5659081 A JP5659081 A JP 5659081A JP 5659081 A JP5659081 A JP 5659081A JP S57172510 A JPS57172510 A JP S57172510A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- level
- control
- outputted
- 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
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/02—Analogue recording or reproducing
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Abstract
PURPOSE:To obtain the convenience of the recording of a speech, etc., by leading a signal from a microphone to a main amplifying circuit after gradually decreasing the sound volume of a reproduced sound by switching a control switch in a reproduction state. CONSTITUTION:When a control switch 23 is closed in a reproduction state, a counter circuit 20 starts counting operation. A digital signal or the output signal of the circuit 20 is converted by a D-A converter 25 into an analog signal, which is applied to the control terminal 6 of an electronic volume control 3. Then, the amount of attenuation by the volume control 3 increases gradually and the level of an output reproduced signal decreases gradually. When the count value of the circuit 20 reaches a value set by a setting circuit 29, an H-level signal or a switching signal is outputted from a control circuit 26. Once the H-level signal is outputted from the circuit 26, an input signal to an AND circuit 19 goes down to a level L, so a pulse signal inputted to the counter circuit 20 is ceased.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5659081A JPS57172510A (en) | 1981-04-14 | 1981-04-14 | Control circuit of tape recorder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5659081A JPS57172510A (en) | 1981-04-14 | 1981-04-14 | Control circuit of tape recorder |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57172510A true JPS57172510A (en) | 1982-10-23 |
JPS634241B2 JPS634241B2 (en) | 1988-01-28 |
Family
ID=13031397
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5659081A Granted JPS57172510A (en) | 1981-04-14 | 1981-04-14 | Control circuit of tape recorder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57172510A (en) |
-
1981
- 1981-04-14 JP JP5659081A patent/JPS57172510A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS634241B2 (en) | 1988-01-28 |
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