JPS55100763A - Fm multiplex demodulator circuit - Google Patents
Fm multiplex demodulator circuitInfo
- Publication number
- JPS55100763A JPS55100763A JP823779A JP823779A JPS55100763A JP S55100763 A JPS55100763 A JP S55100763A JP 823779 A JP823779 A JP 823779A JP 823779 A JP823779 A JP 823779A JP S55100763 A JPS55100763 A JP S55100763A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- level
- 38khz
- switching
- base
- 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
- 239000002131 composite material Substances 0.000 abstract 2
- 230000005684 electric field Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H40/00—Arrangements specially adapted for receiving broadcast information
- H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
- H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
- H04H40/36—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving
- H04H40/45—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving for FM stereophonic broadcast systems receiving
- H04H40/72—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving for FM stereophonic broadcast systems receiving for noise suppression
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/1646—Circuits adapted for the reception of stereophonic signals
- H04B1/1661—Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels
- H04B1/1669—Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels of the demodulated composite stereo signal
- H04B1/1676—Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels of the demodulated composite stereo signal of the sum or difference signal
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Stereo-Broadcasting Methods (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP823779A JPS55100763A (en) | 1979-01-29 | 1979-01-29 | Fm multiplex demodulator circuit |
GB7941976A GB2040145A (en) | 1979-01-29 | 1979-12-05 | Improvements in F.M. receivers |
DE19792950485 DE2950485A1 (de) | 1979-01-29 | 1979-12-14 | Fm-empfaenger |
IT19515/80A IT1149803B (it) | 1979-01-29 | 1980-01-28 | Ricevitore fm |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP823779A JPS55100763A (en) | 1979-01-29 | 1979-01-29 | Fm multiplex demodulator circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55100763A true JPS55100763A (en) | 1980-07-31 |
Family
ID=11687534
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP823779A Pending JPS55100763A (en) | 1979-01-29 | 1979-01-29 | Fm multiplex demodulator circuit |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS55100763A (ja) |
DE (1) | DE2950485A1 (ja) |
GB (1) | GB2040145A (ja) |
IT (1) | IT1149803B (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5646346A (en) * | 1979-09-21 | 1981-04-27 | Hitachi Ltd | Control system for fm stereo demodulation |
KR960008328B1 (ko) * | 1987-02-20 | 1996-06-24 | 상요덴기 가부시기가이샤 | 스테레오 방송수신기 |
-
1979
- 1979-01-29 JP JP823779A patent/JPS55100763A/ja active Pending
- 1979-12-05 GB GB7941976A patent/GB2040145A/en not_active Withdrawn
- 1979-12-14 DE DE19792950485 patent/DE2950485A1/de not_active Withdrawn
-
1980
- 1980-01-28 IT IT19515/80A patent/IT1149803B/it active
Also Published As
Publication number | Publication date |
---|---|
DE2950485A1 (de) | 1980-08-07 |
IT1149803B (it) | 1986-12-10 |
GB2040145A (en) | 1980-08-20 |
IT8019515A0 (it) | 1980-01-28 |
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