JPS5769943A - Selecting callout device - Google Patents
Selecting callout deviceInfo
- Publication number
- JPS5769943A JPS5769943A JP55146660A JP14666080A JPS5769943A JP S5769943 A JPS5769943 A JP S5769943A JP 55146660 A JP55146660 A JP 55146660A JP 14666080 A JP14666080 A JP 14666080A JP S5769943 A JPS5769943 A JP S5769943A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- tone
- callout
- tone signal
- signal detecting
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
PURPOSE:To reduce the current consumption of a decoder circuit, by performing power supply only to the 1st tone signal detecting circuit at the waiting state of callout tone and interrupting the supply of power to other circuits. CONSTITUTION:Since no tone signal is inputted to an input terminal 5 of a decoder 1 at the waiting of callout tone, no signal is present at the output side of the 1st tone signal detecting circuit 10. Thus, no control signal is present at the output side of a storage circuit 26, and a switching circuit 25 is at off-state. Thus, the power supply applied to a powe supply terminal 20 is applied only to the 1st tone signal detecting circuit 10, and not applied other circuits such as the 2nd tone signal detecting circuit, delay circuit 16, gate circuit 17 and malfunction preventing circuit 19 and the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55146660A JPS5769943A (en) | 1980-10-20 | 1980-10-20 | Selecting callout device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55146660A JPS5769943A (en) | 1980-10-20 | 1980-10-20 | Selecting callout device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5769943A true JPS5769943A (en) | 1982-04-30 |
Family
ID=15412737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55146660A Pending JPS5769943A (en) | 1980-10-20 | 1980-10-20 | Selecting callout device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5769943A (en) |
-
1980
- 1980-10-20 JP JP55146660A patent/JPS5769943A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5767380A (en) | Video clamping circuit | |
| JPS57113627A (en) | Gate circuit for gate turn-off thyristor | |
| JPS5769943A (en) | Selecting callout device | |
| JPS54142519A (en) | Power converter | |
| JPS5781630A (en) | Electronic circuit | |
| JPS56111320A (en) | Voltage switching control circuit | |
| JPS57148479A (en) | Apparatus controlling system | |
| JPS54113832A (en) | Inverter device | |
| JPS54148358A (en) | Diode gate circuit | |
| JPS5583344A (en) | Signal change-over circuit | |
| JPS5773529A (en) | Switching circuit | |
| JPS5383569A (en) | Switching circuit | |
| JPS56168426A (en) | Reference voltage switching device of analog-to-digital converter | |
| JPS5779457A (en) | Voltage comparing circuit | |
| JPS5735416A (en) | Input circuit | |
| JPS573427A (en) | Interface circuit | |
| JPS5799030A (en) | Signal switching circuit | |
| JPS56114439A (en) | Invertor circuit | |
| JPS57194635A (en) | Exclusive "or" circuit | |
| JPS552308A (en) | Signal input circuit | |
| JPS56161720A (en) | Electronic switch | |
| JPS56139074A (en) | Switching circuit | |
| JPS5471282A (en) | Input device of electronic controller | |
| JPS56111321A (en) | Semiconductor switch | |
| JPS5627610A (en) | Controlling circuit having multiple display functions |