JPS54118154A - Signal amplitude compander featuring polygonal line characteristics - Google Patents
Signal amplitude compander featuring polygonal line characteristicsInfo
- Publication number
- JPS54118154A JPS54118154A JP2636678A JP2636678A JPS54118154A JP S54118154 A JPS54118154 A JP S54118154A JP 2636678 A JP2636678 A JP 2636678A JP 2636678 A JP2636678 A JP 2636678A JP S54118154 A JPS54118154 A JP S54118154A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- control voltage
- featuring
- input terminal
- output
- 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
Abstract
PURPOSE: To ensure easy and accurate setting of the changing points for the degree of compansion and expansion by switching the control voltage between the analog divider and multiplier in accordance with the scale of the reference voltage of the output voltage.
CONSTITUTION: AC signal Vi applied to input terminal 1 is applied to one input terminal of analog divider 6, and the control voltage amplified by operational amplifier A1 and A2 is applied to the other input terminal after obtaining the DC voltage of K|Vo| through detection of output voltage Vo via detector circuit 3 and low frequency filter circuit 4. Diode D1 conducts when K|Vo| is over reference voltage |Vr|, and D2 does not conduct with the control voltage set to K|Vo|. And D2 conducts when K|Vo|<|Vr| is satisfied and with the control voltage set to |Vr| respectively. Therefore, the input/output characteristics features the linear polygonal property centering on the point of K|Vo| = |Vr|. As a result, the intput/output property can be improved if the compander and the expander featuring the same structure.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53026366A JPS6041885B2 (en) | 1978-03-07 | 1978-03-07 | Signal amplitude compandor with polygonal characteristics |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53026366A JPS6041885B2 (en) | 1978-03-07 | 1978-03-07 | Signal amplitude compandor with polygonal characteristics |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54118154A true JPS54118154A (en) | 1979-09-13 |
JPS6041885B2 JPS6041885B2 (en) | 1985-09-19 |
Family
ID=12191491
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53026366A Expired JPS6041885B2 (en) | 1978-03-07 | 1978-03-07 | Signal amplitude compandor with polygonal characteristics |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6041885B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56149112A (en) * | 1980-03-31 | 1981-11-18 | Yokogawa Hewlett Packard Ltd | Signal attenuator |
JPS5848541A (en) * | 1981-09-18 | 1983-03-22 | Fujitsu Ltd | Optical analog signal transmission system |
JPS59164323U (en) * | 1983-04-19 | 1984-11-05 | 日本コロムビア株式会社 | Amplifier volume control circuit |
JPH04344722A (en) * | 1991-05-21 | 1992-12-01 | Nec Corp | Portable telephone system |
-
1978
- 1978-03-07 JP JP53026366A patent/JPS6041885B2/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56149112A (en) * | 1980-03-31 | 1981-11-18 | Yokogawa Hewlett Packard Ltd | Signal attenuator |
JPS5848541A (en) * | 1981-09-18 | 1983-03-22 | Fujitsu Ltd | Optical analog signal transmission system |
JPS6322695B2 (en) * | 1981-09-18 | 1988-05-12 | Fujitsu Ltd | |
JPS59164323U (en) * | 1983-04-19 | 1984-11-05 | 日本コロムビア株式会社 | Amplifier volume control circuit |
JPH04344722A (en) * | 1991-05-21 | 1992-12-01 | Nec Corp | Portable telephone system |
Also Published As
Publication number | Publication date |
---|---|
JPS6041885B2 (en) | 1985-09-19 |
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