JPS5644290A - Subscriber's circuit scanning system - Google Patents
Subscriber's circuit scanning systemInfo
- Publication number
- JPS5644290A JPS5644290A JP12040079A JP12040079A JPS5644290A JP S5644290 A JPS5644290 A JP S5644290A JP 12040079 A JP12040079 A JP 12040079A JP 12040079 A JP12040079 A JP 12040079A JP S5644290 A JPS5644290 A JP S5644290A
- Authority
- JP
- Japan
- Prior art keywords
- subscriber
- unit
- state change
- cpu
- detects
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/72—Finding out and indicating number of calling subscriber
Abstract
PURPOSE:To improve the processing capability of a unit, by performing the function, which detects the state change of a subscriber, independently of the CPU in the subscriber's circuit scanning system which detects on and off-hook state change of the subscriber in the electronic exchange unit. CONSTITUTION:In case of detection for state change of the subscriber, date channel DCH receives the total number of a series of orders transmitted from CPU CC to subscriber scanner SCN, the start address of the transmission order group on main memory unit MM, and the start address of the table where scanning results in the preceding period are stored. Channel DCH reads orders from unit MM and transmits them to scanner SCN and receives scanning results and compares them with scanned results in the preceding period on unit MM and detects noncoincidence to store scanning results in unit MM for detection of coincidence between them. As a result, the function to detect state change of the subscriber is performed independently of CPU CC, so that the processing capability of the unit can be improved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12040079A JPS593076B2 (en) | 1979-09-19 | 1979-09-19 | Subscriber circuit scanning method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12040079A JPS593076B2 (en) | 1979-09-19 | 1979-09-19 | Subscriber circuit scanning method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5644290A true JPS5644290A (en) | 1981-04-23 |
JPS593076B2 JPS593076B2 (en) | 1984-01-21 |
Family
ID=14785267
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12040079A Expired JPS593076B2 (en) | 1979-09-19 | 1979-09-19 | Subscriber circuit scanning method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS593076B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6074051A (en) * | 1983-09-30 | 1985-04-26 | Fujitsu Ltd | Data comparison processing system |
JP2011196412A (en) * | 2010-03-17 | 2011-10-06 | Kawasaki Heavy Ind Ltd | Heat shielding structure of low temperature tank and heat shielding construction method |
-
1979
- 1979-09-19 JP JP12040079A patent/JPS593076B2/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6074051A (en) * | 1983-09-30 | 1985-04-26 | Fujitsu Ltd | Data comparison processing system |
JPH0457023B2 (en) * | 1983-09-30 | 1992-09-10 | Fujitsu Ltd | |
JP2011196412A (en) * | 2010-03-17 | 2011-10-06 | Kawasaki Heavy Ind Ltd | Heat shielding structure of low temperature tank and heat shielding construction method |
Also Published As
Publication number | Publication date |
---|---|
JPS593076B2 (en) | 1984-01-21 |
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