JPS55114032A - Limitation system for level variation - Google Patents
Limitation system for level variationInfo
- Publication number
- JPS55114032A JPS55114032A JP1963879A JP1963879A JPS55114032A JP S55114032 A JPS55114032 A JP S55114032A JP 1963879 A JP1963879 A JP 1963879A JP 1963879 A JP1963879 A JP 1963879A JP S55114032 A JPS55114032 A JP S55114032A
- Authority
- JP
- Japan
- Prior art keywords
- output
- gain
- level variation
- circuit
- holding
- 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.)
- Pending
Links
Abstract
PURPOSE: To limit the output level variation of a programmable variable gain circuit set to its initial gain by converting the output of the above-mentioned circuit into a digital signal, by holding this signal, and then by controlling the gain of the above-mentioned circuit by the holding output in a direction where its output level variation is limited.
CONSTITUTION: Programmable variable gain circuit VGA set to its initial gain and an A/D converter converting its output into a digital signal are provided; and the output of A/D converter is held by latch circuit LC, etc., and by its holding output, the gain of programmable variable gain circuit VGA is controlled in a direction where its output level variation is limited. As a result, high-speed operation and simple constitution are realized and the accurate gain can be obtained.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1963879A JPS55114032A (en) | 1979-02-23 | 1979-02-23 | Limitation system for level variation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1963879A JPS55114032A (en) | 1979-02-23 | 1979-02-23 | Limitation system for level variation |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55114032A true JPS55114032A (en) | 1980-09-03 |
Family
ID=12004752
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1963879A Pending JPS55114032A (en) | 1979-02-23 | 1979-02-23 | Limitation system for level variation |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55114032A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5034772A (en) * | 1973-08-01 | 1975-04-03 | ||
JPS5045506A (en) * | 1973-08-27 | 1975-04-23 |
-
1979
- 1979-02-23 JP JP1963879A patent/JPS55114032A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5034772A (en) * | 1973-08-01 | 1975-04-03 | ||
JPS5045506A (en) * | 1973-08-27 | 1975-04-23 |
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