JPS641339A - Demodulator - Google Patents
DemodulatorInfo
- Publication number
- JPS641339A JPS641339A JP62155505A JP15550587A JPS641339A JP S641339 A JPS641339 A JP S641339A JP 62155505 A JP62155505 A JP 62155505A JP 15550587 A JP15550587 A JP 15550587A JP S641339 A JPS641339 A JP S641339A
- Authority
- JP
- Japan
- Prior art keywords
- stepped
- signals
- generator
- automatic equalizer
- wave
- 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
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
PURPOSE: To surely and quickly set an automatic equalizer circuit to a collection operating state, by using a stepped-wave generator as the signal generator which generates signals to be supplied to a carrier reproducing device.
CONSTITUTION: Modulated waves 101 which are distorted in waveform are inputted to an automatic equalizer circuit 1 and outputted to a demodulator 2 after the waveform distortion is equalized by the circuit 1. The output signal 107 of an asynchronism detector 3 functions as the control signal of a stepped- wave generator 5. Namely, the generator 5 generates stepped-wave signals 106 at the time of asynchronism and outputs the signals 106 to a carrier reproducing device 4. Since a fixed time area having no amplitude fluctuation is secured with respect to the time base as at Points (a) and (b) of the figure when such stepped-wave signals 106 are used, highest-level error information with high accuracy is obtained during the period and reduction of speed becomes unnecessary. Therefore, the automatic equalizer can surely and quickly execute pulling-in operations.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62155505A JPS641339A (en) | 1987-06-24 | 1987-06-24 | Demodulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62155505A JPS641339A (en) | 1987-06-24 | 1987-06-24 | Demodulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH011339A JPH011339A (en) | 1989-01-05 |
| JPS641339A true JPS641339A (en) | 1989-01-05 |
Family
ID=15607512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62155505A Pending JPS641339A (en) | 1987-06-24 | 1987-06-24 | Demodulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS641339A (en) |
-
1987
- 1987-06-24 JP JP62155505A patent/JPS641339A/en active Pending
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