JPS561608A - Multistep agc control system for automatic equalizer - Google Patents
Multistep agc control system for automatic equalizerInfo
- Publication number
- JPS561608A JPS561608A JP7655279A JP7655279A JPS561608A JP S561608 A JPS561608 A JP S561608A JP 7655279 A JP7655279 A JP 7655279A JP 7655279 A JP7655279 A JP 7655279A JP S561608 A JPS561608 A JP S561608A
- Authority
- JP
- Japan
- Prior art keywords
- properties
- variable
- impedance value
- amplifiers
- elements
- 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
- 239000002131 composite material Substances 0.000 abstract 2
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
- H03G3/301—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Filters And Equalizers (AREA)
- Control Of Amplification And Gain Control (AREA)
Abstract
PURPOSE:To increase the varying range of the composite properties through the free selection of the change of properties realized by the variable equalizer and by giving the input/output properties of each DC amplifier and then giving individually the impedance value of each variable impedance element. CONSTITUTION:Both variable impedance elements 13 and 14 vary the impedance value in accordance with the signal sent from peak detector 7. And variable equalizers 4 and 2 vary the gain properties each according to the impedance value of elements 13 and 14. Here DC amplifiers 11 and 12 amplify the signal sent from detector 7 to send it to elements 13 and 14 each. In such way, the input/output properties of amplifiers 11 and 12 are given properly along with the impedance value of these amplifiers given individually. Thus the free selection is secured for the change of properties realized by equalizers 4 and 2 in order to increase the varying range of the composite properties.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7655279A JPS561608A (en) | 1979-06-18 | 1979-06-18 | Multistep agc control system for automatic equalizer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7655279A JPS561608A (en) | 1979-06-18 | 1979-06-18 | Multistep agc control system for automatic equalizer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS561608A true JPS561608A (en) | 1981-01-09 |
JPS6249764B2 JPS6249764B2 (en) | 1987-10-21 |
Family
ID=13608415
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7655279A Granted JPS561608A (en) | 1979-06-18 | 1979-06-18 | Multistep agc control system for automatic equalizer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS561608A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5964848U (en) * | 1982-10-25 | 1984-04-28 | 株式会社東芝 | Image forming system equipment |
WO1991001592A1 (en) * | 1989-07-15 | 1991-02-07 | Philips Japan, Ltd. | Automatic gain control circuit |
ES2127136A1 (en) * | 1997-04-28 | 1999-04-01 | Univ Madrid Politecnica | Very low-consumption automatic gain control system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5246765A (en) * | 1975-10-13 | 1977-04-13 | Seiko Epson Corp | Method of producing semiconductor device |
-
1979
- 1979-06-18 JP JP7655279A patent/JPS561608A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5246765A (en) * | 1975-10-13 | 1977-04-13 | Seiko Epson Corp | Method of producing semiconductor device |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5964848U (en) * | 1982-10-25 | 1984-04-28 | 株式会社東芝 | Image forming system equipment |
WO1991001592A1 (en) * | 1989-07-15 | 1991-02-07 | Philips Japan, Ltd. | Automatic gain control circuit |
US5263187A (en) * | 1989-07-15 | 1993-11-16 | U.S. Philips Corporation | Automatic gain control circuit |
ES2127136A1 (en) * | 1997-04-28 | 1999-04-01 | Univ Madrid Politecnica | Very low-consumption automatic gain control system |
Also Published As
Publication number | Publication date |
---|---|
JPS6249764B2 (en) | 1987-10-21 |
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