JPS57136880A - Intercarrier system receiver for television audio signal - Google Patents
Intercarrier system receiver for television audio signalInfo
- Publication number
- JPS57136880A JPS57136880A JP56022533A JP2253381A JPS57136880A JP S57136880 A JPS57136880 A JP S57136880A JP 56022533 A JP56022533 A JP 56022533A JP 2253381 A JP2253381 A JP 2253381A JP S57136880 A JPS57136880 A JP S57136880A
- Authority
- JP
- Japan
- Prior art keywords
- intermediate frequency
- audio intermediate
- bpf
- tuning circuit
- frequency 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
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
- H04N5/62—Intercarrier circuits, i.e. heterodyning sound and vision carriers
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Receiver Circuits (AREA)
Abstract
PURPOSE:To remarkably reduce buzz beat of a sub-channel signal, by inserting a high gain amplifier between a BPF for pickup of FM modulated audio intermediate frequency signal and an audio intermediate frequency tuning circuit. CONSTITUTION:A part of an output of a video detector 4 is applied to a BPF 5 for FM modulated audio intermediate frequency signal pickup. The output of the BPF 5 is applied to an audio intermediate frequency tuning circuit 6 via a high gain amplifier 14 having >=13dB amplification factor consisting of a common emitter transistor 15, and buffer effect is given with the amplifier 14 to improve the signal distortion. In the tuning circuit 6, one end of a primary coil 7a of a tuning transformer 7 is grounded and another end is grounded via a capacitor 8, and one end of a secondary coil 7b is grounded via a capacitor 9, and an audio intermediate frequency signal picked up at a filter 5 is applied to an intermediate tap of the primary coil 7a.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56022533A JPS57136880A (en) | 1981-02-18 | 1981-02-18 | Intercarrier system receiver for television audio signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56022533A JPS57136880A (en) | 1981-02-18 | 1981-02-18 | Intercarrier system receiver for television audio signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57136880A true JPS57136880A (en) | 1982-08-24 |
Family
ID=12085430
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56022533A Pending JPS57136880A (en) | 1981-02-18 | 1981-02-18 | Intercarrier system receiver for television audio signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57136880A (en) |
-
1981
- 1981-02-18 JP JP56022533A patent/JPS57136880A/en active Pending
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