JPS55151832A - Multiple signal receiver - Google Patents
Multiple signal receiverInfo
- Publication number
- JPS55151832A JPS55151832A JP6011679A JP6011679A JPS55151832A JP S55151832 A JPS55151832 A JP S55151832A JP 6011679 A JP6011679 A JP 6011679A JP 6011679 A JP6011679 A JP 6011679A JP S55151832 A JPS55151832 A JP S55151832A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- demodulation
- case
- frequency
- independent
- 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
-
- 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)
- Circuits Of Receivers In General (AREA)
Abstract
PURPOSE:To prevent the unpleasant sound from entering the listener's ears, by detecting whether the PLL circuit is synchronized with the input frequency or the like and then carrying out the stereo demodulation in the case of the synchronism and carrying out the envelope curve detection in the case of the asynchronism each. CONSTITUTION:The IF signal relating to the carrier to be supplied to the receiver is detected through PLL circuit 7. And in case the coincidence is secured between the frequency of the output signal obtained through circuit 7 and the frequency of the input signal to be supplied to circuit 7, the perfect demodulation is secured for the two independent signals through the modulated carrier. These signals are then sent to subsequent independent aural amplifier for the stereo demodulation. On the other hand, no coincidence is obtained between the frequencies of the output and input signals, the demodulation signal obtained through envelope curve detecting circuit 25 provided at the rear step of the IF amplifier is sent to independent aural amplifiers each. In this way, the unpleasant sound can be prevented from entering the listener's ears.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6011679A JPS55151832A (en) | 1979-05-15 | 1979-05-15 | Multiple signal receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6011679A JPS55151832A (en) | 1979-05-15 | 1979-05-15 | Multiple signal receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55151832A true JPS55151832A (en) | 1980-11-26 |
Family
ID=13132820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6011679A Pending JPS55151832A (en) | 1979-05-15 | 1979-05-15 | Multiple signal receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55151832A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60109938A (en) * | 1983-10-24 | 1985-06-15 | レオナード アール カーン | Am stereophonic signal decoder |
-
1979
- 1979-05-15 JP JP6011679A patent/JPS55151832A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60109938A (en) * | 1983-10-24 | 1985-06-15 | レオナード アール カーン | Am stereophonic signal decoder |
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