JPH022340B2 - - Google Patents
Info
- Publication number
- JPH022340B2 JPH022340B2 JP55055521A JP5552180A JPH022340B2 JP H022340 B2 JPH022340 B2 JP H022340B2 JP 55055521 A JP55055521 A JP 55055521A JP 5552180 A JP5552180 A JP 5552180A JP H022340 B2 JPH022340 B2 JP H022340B2
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- signal
- output
- significant
- integrator
- 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.)
- Expired - Lifetime
Links
- 238000001514 detection method Methods 0.000 claims description 20
- 230000002238 attenuated effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 230000005236 sound signal Effects 0.000 description 11
- 230000007257 malfunction Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000010354 integration Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5552180A JPS56153871A (en) | 1980-04-28 | 1980-04-28 | Receiving system for signal-frequency signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5552180A JPS56153871A (en) | 1980-04-28 | 1980-04-28 | Receiving system for signal-frequency signal |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56153871A JPS56153871A (en) | 1981-11-28 |
JPH022340B2 true JPH022340B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1990-01-17 |
Family
ID=13001006
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5552180A Granted JPS56153871A (en) | 1980-04-28 | 1980-04-28 | Receiving system for signal-frequency signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56153871A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
-
1980
- 1980-04-28 JP JP5552180A patent/JPS56153871A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS56153871A (en) | 1981-11-28 |
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