JPS6489821A - Am/fm receiver - Google Patents
Am/fm receiverInfo
- Publication number
- JPS6489821A JPS6489821A JP24634687A JP24634687A JPS6489821A JP S6489821 A JPS6489821 A JP S6489821A JP 24634687 A JP24634687 A JP 24634687A JP 24634687 A JP24634687 A JP 24634687A JP S6489821 A JPS6489821 A JP S6489821A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- subject
- synchronizing
- 455khz
- pll
- 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
Landscapes
- Circuits Of Receivers In General (AREA)
Abstract
PURPOSE:To demodulate an audio signal with small distortion factor and less noise by applying synchronizing detection based on a signal being the result of AM audio signal subject to PLL. CONSTITUTION:AM/FM changeover switches 6, 15, 16 are switched to the position of AM and in the AM reception state, then a 456kHz signal is inputted from a flip-flop 13a of a divider 13 and a signal of intermediate frequency 455kHz from an AMIF2c is subject to synchronizing detection by using the 456kHz signal as the synchronizing signal. Moreover, the PLL is applied corresponding to the signal of 455kHz in the phase detection circuit 9 and a pilot signal detection circuit 8 generates an output signal at a level corresponding to the 455kHz signal. Since the audio signal of the AM is subject to synchronizing detection based on the signal subject to PLL processing, the audio signal with small distortion rate and less noise is demodulated from the envelope detection wave.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24634687A JPS6489821A (en) | 1987-09-30 | 1987-09-30 | Am/fm receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24634687A JPS6489821A (en) | 1987-09-30 | 1987-09-30 | Am/fm receiver |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6489821A true JPS6489821A (en) | 1989-04-05 |
Family
ID=17147192
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24634687A Pending JPS6489821A (en) | 1987-09-30 | 1987-09-30 | Am/fm receiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6489821A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11291861B2 (en) | 2019-03-08 | 2022-04-05 | Mevion Medical Systems, Inc. | Delivery of radiation by column and generating a treatment plan therefor |
-
1987
- 1987-09-30 JP JP24634687A patent/JPS6489821A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11291861B2 (en) | 2019-03-08 | 2022-04-05 | Mevion Medical Systems, Inc. | Delivery of radiation by column and generating a treatment plan therefor |
US11311746B2 (en) | 2019-03-08 | 2022-04-26 | Mevion Medical Systems, Inc. | Collimator and energy degrader for a particle therapy system |
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