GB995150A - Circuit arrangements for detecting and registering electrical pulses - Google Patents
Circuit arrangements for detecting and registering electrical pulsesInfo
- Publication number
- GB995150A GB995150A GB1633362A GB1633362A GB995150A GB 995150 A GB995150 A GB 995150A GB 1633362 A GB1633362 A GB 1633362A GB 1633362 A GB1633362 A GB 1633362A GB 995150 A GB995150 A GB 995150A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reference bit
- pulses
- read
- store
- pulse
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/38—Charging, billing or metering by apparatus other than mechanical step-by-step counter type
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radar Systems Or Details Thereof (AREA)
- Measurement Of Unknown Time Intervals (AREA)
Abstract
995,150. Automatic exchange systems. SIEMENS & HASLKE A.G. April 30, 1962 [April 28, 1961], No. 16333/62. Heading H4K. In a system in which pulses on metering wires set bi-stable elements (magnetic cores) which are subsequently read out by scanning pulses for transfer to a counter, and in which the metering pulses may be distorted (e.g. due to contact bounce), the scanning pulses are sufficiently frequent that at least one such pulse falls within an interval between the metering pulses during which none of the distortions are present, and feeding of a pulse to the counter only takes place provided a predetermined sequence of results is obtained from the scanning pulses. First embodiment, Figs. 1, 1a. Each metering wire is arranged to set one of cores K 11 , K xy of the matrix ZSP to condition " 1 " when it receives a pulse. Read-out is effected under control of the scanner TVZ, one row at a time, into a store AR comprising a core for each column, read-out restoring the core to condition " 0." These cores are read out successively under control of the scanner TVS. The main store SP, besides containing the accumulated meter totals for the lines also contains for each line a reference bit for indicating whether the last read-out for the line was 0 or 1. The circuit shown is for the case where the store SP records the information in serial form, the gate G 2 being arranged to accept the reference bit and the adder AD to accept the running total for the line. Each time one of the cores AR is read the corresponding information for the line is read out of the store SP. The circuit is arranged so that 1 is added to the total in SP only if successive readings for a line are 1 and 0. If the read-out from the store AR is a 1 and corresponding reference bit is 0, nothing is fed to the adder AD, but 1 is written into the reference bit via terminal a 2 . If the read-out from store and the reference bit are both 0 or both 1 nothing happens. If the read-out from the store is 0 and from the reference bit is 1, 1 is fed to the adder AD whose new total is fed back to SP via G 1 , and a pulse is sent via a 3 to cancel the reference bit in the store SP. Fig. la illustrates the timing sequences in the first embodiment. The top line indicates the metering pulses (a metering signal being " 1 ") including contact vibrations. The core fed by these signals remains in the " 1 " condition even during these vibrations and when reset by an enquiry pulse reverts to the "1" condition (after its termination and remains so set until an enquiry pulse occurs during a period in which the signals are not present. During this latter period (t p -i min ) two enquiry pulses are necessary in order to produce the required "1"- " 0 " result (i.e. the first resets the core and produces the " 1 " and the second now produces a " 0 "). Thus in the nomenclature of the Fig. 2 F ab #(tp-i min ). The arrangement may be modified by feeding the outputs of AR to a shift register which reads out the previous result, whereby the sequence " 1 "-" 0 " may be immediately detected to cause 1 to be added to the total, the store SP then not being required to store a reference bit. In a second embodiment, Fig. 2a, two closely spaced pulses a, b are used as enquiry pulses these being arranged so that one such pair must occur in each period F ab . The interval between the pulses a, b must. be sufficiently large that both pulses cannot fall within the pause (t p - prel ) between two contact bounces. The results of these enquiries are stored in separate stores and these results together with the read-out reference bit produce the following results:-If the reference bit reads out "0," any enquiry resulting in a " 1 " from pulse b causes a reference bit to be written in. An a-b sequence of " 1 "-" 0 " causes the addition of 1. If the reference bit reads out " 1 " and the result from an a pulse is " 0 " then 1 is added to the total. An a-b sequence " 1 "-" 0 " causes the cancellation of the reference bit. With this arrangement lines can be scanned at twice the rate of the previous arrangement.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES73732A DE1151571B (en) | 1961-04-28 | 1961-04-28 | Method and circuit arrangement for the detection of signal pulses arriving on signal lines in a random sequence, in particular of counting pulses in telecommunications systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB995150A true GB995150A (en) | 1965-06-16 |
Family
ID=7504136
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1633362A Expired GB995150A (en) | 1961-04-28 | 1962-04-30 | Circuit arrangements for detecting and registering electrical pulses |
Country Status (6)
Country | Link |
---|---|
BE (1) | BE616934A (en) |
CH (1) | CH392635A (en) |
DE (1) | DE1151571B (en) |
GB (1) | GB995150A (en) |
NL (2) | NL142854B (en) |
SE (1) | SE313348B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL255978A (en) * | 1960-09-17 | |||
DE1216381B (en) * | 1964-10-21 | 1966-05-12 | Siemens Ag | Method for detecting signal pulses occurring on signal lines in a random sequence, e.g. B. of charge impulses in telephone systems |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL218614A (en) * | 1956-07-02 | |||
DE1103991B (en) * | 1960-01-19 | 1961-04-06 | Standard Elektrik Lorenz Ag | Method and circuit arrangement for the detection of incoming current pulses via telecommunication lines, in particular for the detection of the charges incurred in telephone exchange systems |
-
0
- NL NL277495D patent/NL277495A/xx unknown
-
1961
- 1961-04-28 DE DES73732A patent/DE1151571B/en active Pending
-
1962
- 1962-04-19 CH CH483762A patent/CH392635A/en unknown
- 1962-04-19 NL NL277495A patent/NL142854B/en unknown
- 1962-04-19 SE SE449162A patent/SE313348B/xx unknown
- 1962-04-26 BE BE616934A patent/BE616934A/en unknown
- 1962-04-30 GB GB1633362A patent/GB995150A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL277495A (en) | |
NL142854B (en) | 1974-07-15 |
DE1151571B (en) | 1963-07-18 |
SE313348B (en) | 1969-08-11 |
BE616934A (en) | 1962-10-26 |
CH392635A (en) | 1965-05-31 |
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