JPS55145447A - Noise eliminating circuit - Google Patents
Noise eliminating circuitInfo
- Publication number
- JPS55145447A JPS55145447A JP5288979A JP5288979A JPS55145447A JP S55145447 A JPS55145447 A JP S55145447A JP 5288979 A JP5288979 A JP 5288979A JP 5288979 A JP5288979 A JP 5288979A JP S55145447 A JPS55145447 A JP S55145447A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- noise
- signal
- cancel 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
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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Stereo-Broadcasting Methods (AREA)
- Noise Elimination (AREA)
Abstract
PURPOSE:To suppress the undesired component of the stereo composite signal and then secure the effective detection of only the pulse noise, by providing the subcarrier generating circuit which supplies the output of the 1st gate circuit plus the 2nd gate circuit which gives the control to the output of the subcarrier generating circuit. CONSTITUTION:The noise eliminating circuit consists of the 1st gate circuit 6 which is cut off according to generation of the pulsating noise plus the 1st holding capacitor 7 connected to the output end of circuit 6. Then the output of this circuit is supplied to generate the cancel signal having the same or opposite phase to the stereo composite signal contained in the stereo composite signal through subcarrier generating circuit 9 and cancel signal generating circuit 16. Then the cancel signal is applied to adder circuit 19 via the 2nd holding capacitor 18 as well as the 2nd gate circuit 17 which operates in synchronization with circuit 6. And the subtraction or addition is given between the stero pilot signal sent from circuit 6 and the cancel signal sent from circuit 17, thus ensuring the effective detection for only the pulse noise.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5288979A JPS55145447A (en) | 1979-04-27 | 1979-04-27 | Noise eliminating circuit |
US06/133,932 US4314377A (en) | 1979-04-27 | 1980-03-25 | Noise removing apparatus |
CA000348551A CA1144081A (en) | 1979-04-27 | 1980-03-25 | Noise removing apparatus |
DE8080102251T DE3067514D1 (en) | 1979-04-27 | 1980-04-25 | A noise removing apparatus |
EP80102251A EP0018608B1 (en) | 1979-04-27 | 1980-04-25 | A noise removing apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5288979A JPS55145447A (en) | 1979-04-27 | 1979-04-27 | Noise eliminating circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55145447A true JPS55145447A (en) | 1980-11-13 |
Family
ID=12927427
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5288979A Pending JPS55145447A (en) | 1979-04-27 | 1979-04-27 | Noise eliminating circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55145447A (en) |
-
1979
- 1979-04-27 JP JP5288979A patent/JPS55145447A/en active Pending
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