JPS647779A - Television voice multiplex tuner - Google Patents
Television voice multiplex tunerInfo
- Publication number
- JPS647779A JPS647779A JP62162608A JP16260887A JPS647779A JP S647779 A JPS647779 A JP S647779A JP 62162608 A JP62162608 A JP 62162608A JP 16260887 A JP16260887 A JP 16260887A JP S647779 A JPS647779 A JP S647779A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- inputted
- subvoice
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 abstract 3
- 238000012545 processing Methods 0.000 abstract 2
- 239000002131 composite material Substances 0.000 abstract 1
- 230000003111 delayed effect Effects 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 abstract 1
- 230000002194 synthesizing effect Effects 0.000 abstract 1
Landscapes
- Television Receiver Circuits (AREA)
- Stereo-Broadcasting Methods (AREA)
Abstract
PURPOSE:To digitally detect a TV voice multiplex signal with a simple constitution by delaying a main voice signal for a time prescribed with consideration to the processing time of the digital FM detection of a subvoice signal, then matrix-synthesizing it with the subvoice signal. CONSTITUTION:A composite signal including a main voice signal and a subcarrier wave is inputted to a terminal 1. After being converted 2 to digital data, said signal is inputted to a BPF 3. The BPF 3 separates subcarrier wave component from the inputted data. The subcarrier wave thus separated by the BPF 3 is subjected to a detection circuit 4 and inputted to an FM detection circuit 5. The circuit 5, FM-detects this subcarrier wave digitally by its delay circuit 51 and exclusive OR circuit 52, and outputs a digitized subvoice signal. This subvoice signal is subjected to a level control circuit 6 and inputted to a matrix synthesizing circuit 8. In the mean time, a main voice signal is delayed in a delay circuit 7 by a time equal to the length of time necessary for the processings at the BPF 3, and the circuits 4, 5, 6, thereafter, inputted to the circuit 8 and synthesized with a subvoice signal. From an adding circuit 81, a left signal is outputted while a right signal is outputted from a subtraction circuit 82.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62162608A JPS647779A (en) | 1987-06-30 | 1987-06-30 | Television voice multiplex tuner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62162608A JPS647779A (en) | 1987-06-30 | 1987-06-30 | Television voice multiplex tuner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS647779A true JPS647779A (en) | 1989-01-11 |
Family
ID=15757830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62162608A Pending JPS647779A (en) | 1987-06-30 | 1987-06-30 | Television voice multiplex tuner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS647779A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001094792A1 (en) * | 2000-06-09 | 2001-12-13 | Rha Phil Chan | Multi-scroll pump |
| US8187492B2 (en) | 2006-02-14 | 2012-05-29 | Boston Scientific Scimed, Inc. | Medical device employing liquid crystal block copolymers and method of making the same |
-
1987
- 1987-06-30 JP JP62162608A patent/JPS647779A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001094792A1 (en) * | 2000-06-09 | 2001-12-13 | Rha Phil Chan | Multi-scroll pump |
| US8187492B2 (en) | 2006-02-14 | 2012-05-29 | Boston Scientific Scimed, Inc. | Medical device employing liquid crystal block copolymers and method of making the same |
| US8496616B2 (en) | 2006-02-14 | 2013-07-30 | Boston Scientific Scimed, Inc. | Medical device employing liquid crystal block copolymers and method of making the same |
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