JPS54144854A - Controller for signal amount - Google Patents
Controller for signal amountInfo
- Publication number
- JPS54144854A JPS54144854A JP5333478A JP5333478A JPS54144854A JP S54144854 A JPS54144854 A JP S54144854A JP 5333478 A JP5333478 A JP 5333478A JP 5333478 A JP5333478 A JP 5333478A JP S54144854 A JPS54144854 A JP S54144854A
- Authority
- JP
- Japan
- Prior art keywords
- signal amount
- signal
- attenuation
- resistor
- circuit
- 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
- 230000005236 sound signal Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/001—Digital control of analog signals
Landscapes
- Control Of Amplification And Gain Control (AREA)
Abstract
PURPOSE:To enable to control the signal amount digitally and to obtain the control unit for signal amount excellent in the accuracy and linearity, by providing the operation switch, pulse generation circuit, resistor attenuator controlled with analog switches, and counter circuit. CONSTITUTION:Analog signal such as audio signal is fed to the terminal 1, and the pulse generation circuit 5 produces the count pulse with the operation of the operation switch 6. This count pulse operates the counter circuit 4 and the binary information according to count is outputted and it is given to the resistor attenuator group 3. The attenuator group 3 is constituted with a plurality of resistor attenuators including analog switches and it is set to the attenuation depending on the binary output of the circuit 4. Accordingly, the operation of the switch 6 controls the attenuation of the attenuation group 3 digitally and outputs the analog signal of suitable level at the terminal 2. Thus, the signal amount excellent in the linearity can be controlled, and the signal amount controller excellent in the slide noise and life can be obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5333478A JPS54144854A (en) | 1978-05-04 | 1978-05-04 | Controller for signal amount |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5333478A JPS54144854A (en) | 1978-05-04 | 1978-05-04 | Controller for signal amount |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54144854A true JPS54144854A (en) | 1979-11-12 |
JPS6111007B2 JPS6111007B2 (en) | 1986-04-01 |
Family
ID=12939832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5333478A Granted JPS54144854A (en) | 1978-05-04 | 1978-05-04 | Controller for signal amount |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54144854A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59195821U (en) * | 1983-06-14 | 1984-12-26 | ナカミチ株式会社 | volume adjustment device |
JPS63240111A (en) * | 1987-03-27 | 1988-10-05 | Toshiba Corp | Signal level adjusting circuit |
JPH05275946A (en) * | 1992-03-30 | 1993-10-22 | Mitsubishi Electric Corp | Gain control amplifier |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4945612A (en) * | 1972-09-04 | 1974-05-01 | ||
JPS49130747U (en) * | 1973-03-08 | 1974-11-09 |
-
1978
- 1978-05-04 JP JP5333478A patent/JPS54144854A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4945612A (en) * | 1972-09-04 | 1974-05-01 | ||
JPS49130747U (en) * | 1973-03-08 | 1974-11-09 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59195821U (en) * | 1983-06-14 | 1984-12-26 | ナカミチ株式会社 | volume adjustment device |
JPS63240111A (en) * | 1987-03-27 | 1988-10-05 | Toshiba Corp | Signal level adjusting circuit |
JPH05275946A (en) * | 1992-03-30 | 1993-10-22 | Mitsubishi Electric Corp | Gain control amplifier |
Also Published As
Publication number | Publication date |
---|---|
JPS6111007B2 (en) | 1986-04-01 |
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