JPS6416197A - Time detecting system - Google Patents
Time detecting systemInfo
- Publication number
- JPS6416197A JPS6416197A JP17339487A JP17339487A JPS6416197A JP S6416197 A JPS6416197 A JP S6416197A JP 17339487 A JP17339487 A JP 17339487A JP 17339487 A JP17339487 A JP 17339487A JP S6416197 A JPS6416197 A JP S6416197A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- time
- frequency
- circuit
- 600khz
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Selective Calling Equipment (AREA)
- Electromechanical Clocks (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
PURPOSE:To simplify and to miniaturize a circuit by loading and transmitting a time information signal on a commercial power line, and obtaining a time detecting signal to time-detect in time-reaction type control equipment based on the time information signal. CONSTITUTION:A time information signal 1 loaded on the power line is a frequency modulating wave to include the frequency components of 600kHz and 60kHz, for example. A frequency demodulating circuit 12 has a filter 13 for 60kHz pass and a filter 14 for 600kHz pass, and by the respective filters 13 and 14, demodulation is executed to a frequency signal S0 of 60kHz and a frequency signal S1 of 600kHz. The respective signals S0 and S1 are respectively given through amplifying circuits 15 and 16 and a inpulse noise cut filter 17 to an F-V converting circuit 18. This F-V converting circuit 18 converts the respective signals S0 and S1 to the voltage values of 0[V] and 5[V] and outputs them. The respective outputs are given to a voltage signal mixing circuit 19 and the pulse signal of the voltage value 5[V] is outputted as a time detecting signal 4 by this voltage signal mixing circuit 19.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17339487A JPS6416197A (en) | 1987-07-10 | 1987-07-10 | Time detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17339487A JPS6416197A (en) | 1987-07-10 | 1987-07-10 | Time detecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6416197A true JPS6416197A (en) | 1989-01-19 |
Family
ID=15959590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17339487A Pending JPS6416197A (en) | 1987-07-10 | 1987-07-10 | Time detecting system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6416197A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002267775A (en) * | 2001-03-09 | 2002-09-18 | Seiko Clock Inc | Time information receiving device and radio-controlled clock |
| JP2008113408A (en) * | 2006-10-02 | 2008-05-15 | Midori Denshi Kk | Earth return transportation system |
-
1987
- 1987-07-10 JP JP17339487A patent/JPS6416197A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002267775A (en) * | 2001-03-09 | 2002-09-18 | Seiko Clock Inc | Time information receiving device and radio-controlled clock |
| JP2008113408A (en) * | 2006-10-02 | 2008-05-15 | Midori Denshi Kk | Earth return transportation system |
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