GB1499099A - Electrical signal code generator arrangements - Google Patents
Electrical signal code generator arrangementsInfo
- Publication number
- GB1499099A GB1499099A GB220972A GB220972A GB1499099A GB 1499099 A GB1499099 A GB 1499099A GB 220972 A GB220972 A GB 220972A GB 220972 A GB220972 A GB 220972A GB 1499099 A GB1499099 A GB 1499099A
- Authority
- GB
- United Kingdom
- Prior art keywords
- code
- generator
- shift
- electrical signal
- input
- 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
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/204—Multiple access
- H04B7/216—Code division or spread-spectrum multiple access [CDMA, SSMA]
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/84—Generating pulses having a predetermined statistical distribution of a parameter, e.g. random pulse generators
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Time-Division Multiplex Systems (AREA)
- Radio Relay Systems (AREA)
Abstract
1499099 Producing pulse trains SIEMENS AG 17 Jan 1972 [29 April 1971] 2209/72 Heading H3P An electrical signal code generator arrangement comprises a code-generator 1 and a sequential network 2 comprising a cascade of shift-register stages 51, 52 ... (5n-1) interconnected by halfadders 61, ... (6n-2)(6n-1) and and-gates 41, 42 ... (4n-1), 4n each of which has one control input h1, h2 ... (hn-1), hn respectively, one input from the code-generator and one output to the input stage of the cascade (in the case of and-gate 41) and to respective half-adders (in the case of and-gates 42 ... 4n). The code-generator and each shift-register stage receives timing pulses on line 3 and the shift-register stages also receive resetting pulses on line 7. The control inputs h1, h2 ... hn provide a code address and control inputs Cl, C2 ... Cn to the code-generator represent a code key. The code-generator produces a linear code which is delayed by the sequential network. The generator itself may comprise a sequential network with internal feedback. The arrangement may be used in SSMA communications systems.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712121117 DE2121117C1 (en) | 1971-04-29 | 1971-04-29 | Electrical circuit with a code generator |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1499099A true GB1499099A (en) | 1978-01-25 |
Family
ID=5806369
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB220972A Expired GB1499099A (en) | 1971-04-29 | 1972-01-17 | Electrical signal code generator arrangements |
Country Status (5)
Country | Link |
---|---|
DE (1) | DE2121117C1 (en) |
FR (1) | FR2354687A5 (en) |
GB (1) | GB1499099A (en) |
IT (1) | IT1019527B (en) |
NL (1) | NL155148C (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2124320C1 (en) * | 1971-05-17 | 1978-04-27 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Electrical circuit for generating a large number of different codes |
DE3023375C1 (en) * | 1980-06-23 | 1987-12-03 | Siemens Ag, 1000 Berlin Und 8000 Muenchen, De |
-
1971
- 1971-04-29 DE DE19712121117 patent/DE2121117C1/en not_active Expired
-
1972
- 1972-01-17 GB GB220972A patent/GB1499099A/en not_active Expired
- 1972-04-13 NL NL7204925A patent/NL155148C/xx active
- 1972-04-17 FR FR7213431A patent/FR2354687A5/en not_active Expired
- 1972-04-28 IT IT2367572A patent/IT1019527B/en active
Also Published As
Publication number | Publication date |
---|---|
NL155148C (en) | 1978-04-17 |
FR2354687A5 (en) | 1978-01-06 |
DE2121117C1 (en) | 1978-02-09 |
IT1019527B (en) | 1977-11-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1502761A (en) | Electrical code signal generators | |
GB1167272A (en) | Improvement to Key Generators for Cryptographic Devices | |
JPS554691A (en) | Tree-type coupled logic circuit | |
GB1457338A (en) | Adaptive information processing system | |
GB1095944A (en) | Improvements in and relating to devices for synchronizing pulses | |
EP0404127A3 (en) | Signal generator | |
GB1436964A (en) | Control system for forming from periodic impulses periodic signals of greater duration | |
GB1499099A (en) | Electrical signal code generator arrangements | |
US3328702A (en) | Pulse train modification circuits | |
GB1064661A (en) | Counter comprising bistable stages | |
GB1125271A (en) | Pulse generating system | |
GB933362A (en) | Pulse rate function generation | |
GB1060836A (en) | Improvements in or relating to electrical circuits | |
GB1088193A (en) | Electronic counter | |
GB1490094A (en) | Drive pulse train generators | |
GB893624A (en) | A parallel-to-series converter for electronic computers | |
GB923326A (en) | Improvements relating to electric pulse counting circuits | |
GB891533A (en) | Improvements relating to remote control systems | |
US3052871A (en) | Multiple output sequential signal source | |
GB994777A (en) | Improvements in or relating to electric pulse switching systems | |
ES426656A1 (en) | Bistable circuit arrangement | |
GB1099835A (en) | Electronic clock | |
GB1322915A (en) | Circuit arrangement of a generator of a binomial random sequence | |
ES485824A1 (en) | A circuit to control the appearance of a pulse within a time interval on a fault-free base. (Machine-translation by Google Translate, not legally binding) | |
GB931133A (en) | Data processing system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |