JPS57199351A - Multiple signal receiver - Google Patents
Multiple signal receiverInfo
- Publication number
- JPS57199351A JPS57199351A JP8468081A JP8468081A JPS57199351A JP S57199351 A JPS57199351 A JP S57199351A JP 8468081 A JP8468081 A JP 8468081A JP 8468081 A JP8468081 A JP 8468081A JP S57199351 A JPS57199351 A JP S57199351A
- Authority
- JP
- Japan
- Prior art keywords
- phase error
- components
- signal
- phi
- carrier 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.)
- Granted
Links
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 separate a stereo signal well surely and stably, by extracting pilot signal components from two demodulation signals to correct the phase error of a reproducing carrier wave corresponding to the carrier wave to be modulated in the AM stereo receiver. CONSTITUTION:When pilot components in outputs of multipliers 6 and 7 for a phase error phi are denoted as P1 and P2, P1=-(1/2)Psinphi and P2-(1/2)Pcosphi are true, and these pilot components are extracted by BPFs 10 and 11. These signals P1 and P2 are multiplied in a multiplier 12, and DC components A(phi) having the phase error discrimination characteristics are extracted by an LPF13. This signal A(phi) controls a local oscillator 3. Thus, a carrier wave generator 5 utilizes the fact that the phase difference between an input signal and an output signal is changed by the input signal frequency to correc the phase error.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8468081A JPS57199351A (en) | 1981-06-01 | 1981-06-01 | Multiple signal receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8468081A JPS57199351A (en) | 1981-06-01 | 1981-06-01 | Multiple signal receiver |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57199351A true JPS57199351A (en) | 1982-12-07 |
JPS6248420B2 JPS6248420B2 (en) | 1987-10-14 |
Family
ID=13837402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8468081A Granted JPS57199351A (en) | 1981-06-01 | 1981-06-01 | Multiple signal receiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57199351A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6178206A (en) * | 1984-09-26 | 1986-04-21 | Fujitsu Ten Ltd | Phase locked circuit device |
JPH05145502A (en) * | 1991-11-18 | 1993-06-11 | Hibiya Eng Ltd | Double side band amplitude modulation phase duplex transmission system |
-
1981
- 1981-06-01 JP JP8468081A patent/JPS57199351A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6178206A (en) * | 1984-09-26 | 1986-04-21 | Fujitsu Ten Ltd | Phase locked circuit device |
JPH05145502A (en) * | 1991-11-18 | 1993-06-11 | Hibiya Eng Ltd | Double side band amplitude modulation phase duplex transmission system |
JPH07112178B2 (en) * | 1991-11-18 | 1995-11-29 | 日比谷総合設備株式会社 | Double sideband amplitude modulation phase double transmission system |
Also Published As
Publication number | Publication date |
---|---|
JPS6248420B2 (en) | 1987-10-14 |
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