JPS647735A - Digital tuner - Google Patents
Digital tunerInfo
- Publication number
- JPS647735A JPS647735A JP16261387A JP16261387A JPS647735A JP S647735 A JPS647735 A JP S647735A JP 16261387 A JP16261387 A JP 16261387A JP 16261387 A JP16261387 A JP 16261387A JP S647735 A JPS647735 A JP S647735A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- frequency
- intermediate frequency
- bpf
- 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.)
- Granted
Links
Abstract
PURPOSE:To digitally demodulate a composite signal with a simple constitution by setting an fs to the multiple of natural number of the fs of a digital input signal when an intermediate frequency signal is sampled by a prescribed sampling frequency (fs) and digitized. CONSTITUTION:A TV voice multiplexing signal and an FM stereoscopic signal are inputted through an RF amplifying circuit 2 and an FM amplifying circuit 3 to a mixer 5, multiplexed with the prescribed frequency signal from a local oscillating circuit 4, an intermediate frequency signal is separated by BPF 6 and outputted through an amplifer 7. The intermediate frequency signal of a frequency fc from the circuit 7 is sampled and digitized by the sampling frequency fs of the frequency of the multiple of natural number of the fc, detected by an FM detecting circuit 9 and a composite signal is outputted. The signal is digitally demodulated by a multiplexing circuit 18 composed of demodulating circuits 12 and 13, a matrix circuit 16, a controller 17 and a BPF 37 of the composite signal of the FM stereoscopic signal and the TV voice signal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16261387A JP2675553B2 (en) | 1987-06-30 | 1987-06-30 | Digital tuner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16261387A JP2675553B2 (en) | 1987-06-30 | 1987-06-30 | Digital tuner |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS647735A true JPS647735A (en) | 1989-01-11 |
JP2675553B2 JP2675553B2 (en) | 1997-11-12 |
Family
ID=15757927
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16261387A Expired - Lifetime JP2675553B2 (en) | 1987-06-30 | 1987-06-30 | Digital tuner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2675553B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1148632A2 (en) * | 2000-03-31 | 2001-10-24 | Pioneer Corporation | FM stereo signal demodulating apparatus |
US6901146B1 (en) | 1999-12-21 | 2005-05-31 | Mitsubishi Denki Kabushiki Kaisha | All-digital FM stereo demodulator and demodulation method |
JP2009054418A (en) * | 2007-08-27 | 2009-03-12 | Tokai Rika Co Ltd | Switch device |
JP2009065234A (en) * | 2007-09-04 | 2009-03-26 | Pioneer Electronic Corp | Signal processor, signal processing method, signal processing program, and recording medium thereof |
JP2009225259A (en) * | 2008-03-18 | 2009-10-01 | Pioneer Electronic Corp | Fm receiver, its method and its program and recording medium |
-
1987
- 1987-06-30 JP JP16261387A patent/JP2675553B2/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6901146B1 (en) | 1999-12-21 | 2005-05-31 | Mitsubishi Denki Kabushiki Kaisha | All-digital FM stereo demodulator and demodulation method |
EP1148632A2 (en) * | 2000-03-31 | 2001-10-24 | Pioneer Corporation | FM stereo signal demodulating apparatus |
JP2009054418A (en) * | 2007-08-27 | 2009-03-12 | Tokai Rika Co Ltd | Switch device |
JP2009065234A (en) * | 2007-09-04 | 2009-03-26 | Pioneer Electronic Corp | Signal processor, signal processing method, signal processing program, and recording medium thereof |
JP2009225259A (en) * | 2008-03-18 | 2009-10-01 | Pioneer Electronic Corp | Fm receiver, its method and its program and recording medium |
Also Published As
Publication number | Publication date |
---|---|
JP2675553B2 (en) | 1997-11-12 |
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