JPS6459031A - Correlative saturation compensating device - Google Patents
Correlative saturation compensating deviceInfo
- Publication number
- JPS6459031A JPS6459031A JP62214991A JP21499187A JPS6459031A JP S6459031 A JPS6459031 A JP S6459031A JP 62214991 A JP62214991 A JP 62214991A JP 21499187 A JP21499187 A JP 21499187A JP S6459031 A JPS6459031 A JP S6459031A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- measured
- component
- level
- fine
- 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
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
- Optical Communication System (AREA)
- Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
- Dc Digital Transmission (AREA)
Abstract
PURPOSE:To extract a fine signal of fine signal level from a response signal by compressing the signal level of an external component to be measured, by using a clip circuit, and obtaining the correlation output of the response input signal without decreasing the gain of an amplifier. CONSTITUTION:An adder A adds signals from level clip circuits 2 and 3 together and outputs their sum signal. A correlator 6 correlates the pseudo random signal of a signal source which is returned as the response input signal to an input terminal with a delay reference signal which is delayed by a specific time and then outputs only the signal component to be measured whose correlation is held. Thus, the signal component to be measured is extracted from the response input signal wherein the signal component of fine signal level to be measured and a signal component of larger signal level then the signal component to be measured not to be measured.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62214991A JPS6459031A (en) | 1987-08-31 | 1987-08-31 | Correlative saturation compensating device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62214991A JPS6459031A (en) | 1987-08-31 | 1987-08-31 | Correlative saturation compensating device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6459031A true JPS6459031A (en) | 1989-03-06 |
Family
ID=16664891
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62214991A Pending JPS6459031A (en) | 1987-08-31 | 1987-08-31 | Correlative saturation compensating device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6459031A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0387100A2 (en) * | 1989-03-10 | 1990-09-12 | Hitachi, Ltd. | Ignition timing control method for an internal combustion engine and apparatus therefor |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61163736A (en) * | 1985-01-12 | 1986-07-24 | Fujitsu Ltd | Monitoring system |
-
1987
- 1987-08-31 JP JP62214991A patent/JPS6459031A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61163736A (en) * | 1985-01-12 | 1986-07-24 | Fujitsu Ltd | Monitoring system |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0387100A2 (en) * | 1989-03-10 | 1990-09-12 | Hitachi, Ltd. | Ignition timing control method for an internal combustion engine and apparatus therefor |
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