JPS5583359A - Am stereophonic demodulator circuit - Google Patents
Am stereophonic demodulator circuitInfo
- Publication number
- JPS5583359A JPS5583359A JP15637178A JP15637178A JPS5583359A JP S5583359 A JPS5583359 A JP S5583359A JP 15637178 A JP15637178 A JP 15637178A JP 15637178 A JP15637178 A JP 15637178A JP S5583359 A JPS5583359 A JP S5583359A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- phase
- input signal
- signals
- signal
- 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
- 238000001514 detection method Methods 0.000 abstract 4
- 230000001360 synchronised effect Effects 0.000 abstract 3
- 230000006866 deterioration Effects 0.000 abstract 2
- 238000000926 separation method Methods 0.000 abstract 2
- 239000002131 composite material Substances 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/86—Arrangements characterised by the broadcast information itself
- H04H20/88—Stereophonic broadcast systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Stereo-Broadcasting Methods (AREA)
Abstract
PURPOSE:To make it possible to reduce output variation and deterioration of separation due to a difference in phase, by bearing the adequate phase relation of a synchronous detection circuit by correcting the phase difference between a switching signal and input signal. CONSTITUTION:Phase-locked loop circuit 3 obtains two signals for synchronous detection synchronizing with an input signal and a composite synchronizing signal is separately detected 9 and 10 synchronously by those two signals to obtain left and right signals by matrix circuit 12. Here, variable delay circuit 15 is connected to the input signal or switching signal of circuit 9 or 10 and circuit 15 is controlled by the output voltage of phase detection circuit of circuit 3. Consequently, a phase difference between the input signal and switching signal of synchronous detection circuit 12 is corrected to bear adequate phase relation between circuits 9 and 10, so that output variation and deterioration in separation due to the phase difference can be reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15637178A JPS5583359A (en) | 1978-12-20 | 1978-12-20 | Am stereophonic demodulator circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15637178A JPS5583359A (en) | 1978-12-20 | 1978-12-20 | Am stereophonic demodulator circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5583359A true JPS5583359A (en) | 1980-06-23 |
Family
ID=15626283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15637178A Pending JPS5583359A (en) | 1978-12-20 | 1978-12-20 | Am stereophonic demodulator circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5583359A (en) |
-
1978
- 1978-12-20 JP JP15637178A patent/JPS5583359A/en active Pending
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