GB1047085A - Improvements in or relating to systems for preventing malfunctions in memory systems - Google Patents
Improvements in or relating to systems for preventing malfunctions in memory systemsInfo
- Publication number
- GB1047085A GB1047085A GB411364A GB411364A GB1047085A GB 1047085 A GB1047085 A GB 1047085A GB 411364 A GB411364 A GB 411364A GB 411364 A GB411364 A GB 411364A GB 1047085 A GB1047085 A GB 1047085A
- Authority
- GB
- United Kingdom
- Prior art keywords
- memory
- pulse
- udb
- ubs
- stores
- 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
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/004—Error avoidance
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Time-Division Multiplex Systems (AREA)
- Exchange Systems With Centralized Control (AREA)
Abstract
1,047,085. Automatic exchange systems. SIEMENS & HALSKE A.G. Jan. 31, 1964 [Jan. 31, 1963], No. 4113/64. Heading H4K. In a system for preventing malfunctions in a memory system, wherein, in correct operation, the occurrence of a particular state of one memory is dependent on the occurrence of a particular state in a further memory, then the latter issues a command to drive the said one memory into the particular state irrespective of the actual storage state of said one memory. In the time division multiplex exchange shown, pulse positions allocated to a call are present in the store Ua for calling subscribers' numbers and may be present in store Ub for called subscribers' numbers, or store UDB for permitting switch-through to the called subscriber or in stores UR, UBS for causing ringing signal or busy tone to be sent. If no pulse is present in Ua at any pulse position then no pulse should be present in any of the other stores. In this case an output from NEITHER-NOR-gate G12 is applied to inhibit circulation in all the stores. Likewise a pulse should not be in UDB unless there is one in Ub so inhibition is provided via gate G23. Further combinations to be prohibited are UDB with UBS, UR with UBS, UR but not UDB. In addition, UR with UBS is arranged to delete Ua, so that a fresh start may be made to the call. In the case of an interexchange call in which digits to be onward transmitted are stored in ZPS and other relevant information (e.g. trunk or calling line identity) is required to be stored in KPS, deletion from either of the stores takes place if there is no information in the other.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1963S0083512 DE1257221B (en) | 1963-01-31 | 1963-01-31 | Method for controlling memory devices, in particular in a time-division multiplex switching system constructed with circular memories |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1047085A true GB1047085A (en) | 1966-11-02 |
Family
ID=7511093
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB411364A Expired GB1047085A (en) | 1963-01-31 | 1964-01-31 | Improvements in or relating to systems for preventing malfunctions in memory systems |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE643242A (en) |
CH (1) | CH431632A (en) |
DE (1) | DE1257221B (en) |
GB (1) | GB1047085A (en) |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1126938B (en) * | 1960-10-06 | 1962-04-05 | Standard Elektrik Lorenz Ag | Circuit arrangement for the central control of switching devices by means of two similar, parallel-acting control devices in centralized telecommunication switching systems, in particular telephone switching systems |
-
1963
- 1963-01-31 DE DE1963S0083512 patent/DE1257221B/en active Pending
-
1964
- 1964-01-28 CH CH96764A patent/CH431632A/en unknown
- 1964-01-31 GB GB411364A patent/GB1047085A/en not_active Expired
- 1964-01-31 BE BE643242D patent/BE643242A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
CH431632A (en) | 1967-03-15 |
DE1257221B (en) | 1967-12-28 |
BE643242A (en) | 1964-07-31 |
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