GB632376A - Improvements in or relating to electric pulse systems - Google Patents

Improvements in or relating to electric pulse systems

Info

Publication number
GB632376A
GB632376A GB29654/46A GB2965446A GB632376A GB 632376 A GB632376 A GB 632376A GB 29654/46 A GB29654/46 A GB 29654/46A GB 2965446 A GB2965446 A GB 2965446A GB 632376 A GB632376 A GB 632376A
Authority
GB
United Kingdom
Prior art keywords
pulses
pulse
circuit
synchronizing
timing
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
Application number
GB29654/46A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to NL78385D priority Critical patent/NL78385C/xx
Priority to NL76006D priority patent/NL76006C/xx
Priority to FR962117D priority patent/FR962117A/fr
Priority to GB18558/??A priority patent/GB613617A/en
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to US755560A priority patent/US2553605A/en
Priority to CH277494D priority patent/CH277494A/en
Priority to US777761A priority patent/US2512680A/en
Priority to ES0180320A priority patent/ES180320A1/en
Priority to CH300213D priority patent/CH300213A/en
Priority to FR58558D priority patent/FR58558E/en
Publication of GB632376A publication Critical patent/GB632376A/en
Priority to DEST2531A priority patent/DE920913C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/52—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
    • H04Q3/526—Optical switching systems
    • 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)
  • Computer Networks & Wireless Communication (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

632,376. Automatic exchange apparatus. STANDARD TELEPHONES & CABLES, Ltd., and ROBERTS, W. L. Oct. 4, 1946, No. 29654. [Class 40 (iv)] [Also in Group XL (c)] The selection circuit for a pulse multiplex system as described in Specification 632,375 comprises an electronic device for selecting a time position in a cycle for the emission of a pulse in one or more steps from a reference time position, which may be the synchronizing pulse. A source C, Fig. 1, supplies a train of pulses, a, Fig. 2, -comprising timing pulses and larger amplitude synchronizing pulses. Normally, only the synchronizing pulses can pass the gate F, but, when a start signal from source B operates the gate, the timing pulses are also transmitted. Both types pass the phase shift gate C, curve f, and are applied to the synchronizing delay circuit H. Before the start signal operates, the synchronizing pulses are effective to operate circuit H which has an operating time only slightly shorter than the interval between them, curve H, so that, when the timing pulses commence they are ineffective. The circuit H feeds an output circuit producing pulses e which are also fed to a coincidence gating circuit E. Upon a phase shifting signal b being supplied from source A, the phase shift delay circuit D produces an output pulse c of slightly greater duration than the interval between two synchronizing pulses so that the coincidence mixer F emits a pulse d when pulse e is applied. The pulse d closes the gate circuit G to suppress the synchronizing pulse so that the circuit H cannot be operated by that pulse and is triggered by the first succeeding timing pulse. As a result the following output pulse e is delayed by one timing pulse, each input b causing a further delay. In the absence of further input pulses, the output pulses continue at the same intervals. When the start signal is removed, the timing pulses cease and the output pulses revert to synchronism with the synchronizing pulses.
GB29654/46A 1946-06-20 1946-10-04 Improvements in or relating to electric pulse systems Expired GB632376A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
NL78385D NL78385C (en) 1946-06-20
NL76006D NL76006C (en) 1946-06-20
FR962117D FR962117A (en) 1946-06-20
GB18558/??A GB613617A (en) 1946-06-20 1946-06-20 Improvements in or relating to automatic telephone exchange equipment
CH277494D CH277494A (en) 1946-06-20 1947-06-19 Automatic telecommunications switchgear.
US755560A US2553605A (en) 1946-06-20 1947-06-19 Busy indication in electronic switching equipment for automatic telephone exchanges
US777761A US2512680A (en) 1946-06-20 1947-10-03 Electronic pulse transmission system
ES0180320A ES180320A1 (en) 1946-10-04 1947-10-30 IMPROVEMENTS IN CONTROL PROVISIONS FOR SYSTEMS DRIVEN BY ELECTRONIC PULSES
CH300213D CH300213A (en) 1946-06-20 1947-11-28 Switching installation.
FR58558D FR58558E (en) 1946-06-20 1947-12-19 Telecommunications switching systems
DEST2531A DE920913C (en) 1946-06-20 1950-10-01 Circuit arrangement for line finders in electronic remote switching systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB277494X 1946-06-20

Publications (1)

Publication Number Publication Date
GB632376A true GB632376A (en) 1949-11-28

Family

ID=10264650

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29654/46A Expired GB632376A (en) 1946-06-20 1946-10-04 Improvements in or relating to electric pulse systems

Country Status (1)

Country Link
GB (1) GB632376A (en)

Similar Documents

Publication Publication Date Title
GB1159320A (en) Device for Synchronising Pulse-Generators
GB644123A (en) Improvements in television transmission systems
GB650764A (en) Telecommunication exchange
GB650666A (en) Colour television system
GB690760A (en) Combined television and sound system
GB632376A (en) Improvements in or relating to electric pulse systems
GB628833A (en) A system for separating synchronising pulses from signal-modulated pulses
ES184993A1 (en) A TELEVISION RECEIVER DEVICE
GB961228A (en) Apparatus for synchronizing a remote television signal source
US2535266A (en) Blanking pulse generating circuit
GB593467A (en) Arrangements for transmitting and receiving short electric pulses
GB869708A (en) Improvements in or relating to television systems
GB1002130A (en) Television camera control apparatus
GB1237520A (en) Combined facsimile transmitter and receiver
GB710243A (en) Television colour synchronization
JPS55120268A (en) Synchronizing signal transmitter
SU741441A1 (en) Pulse synchronizing device
GB1444824A (en) Synchronous data transmission systems
JPS5417490A (en) Synchronized controlling system by plural tables
GB1092443A (en) Improvements in or relating to a sweep control system for an oscilloscope or the like
GB794724A (en) Improvements relating to synchronizing and blanking signal generators for television
GB581328A (en) Improvements in or relating to frequency dividers
GB1287586A (en) Automatic synchronizing systems for sampling devices
GB886663A (en) Improvements relating to remote control systems
SU1462512A2 (en) Device for remote synchronization of television camera