GB1449838A - Receivers for communication systems - Google Patents

Receivers for communication systems

Info

Publication number
GB1449838A
GB1449838A GB5788473A GB5788473A GB1449838A GB 1449838 A GB1449838 A GB 1449838A GB 5788473 A GB5788473 A GB 5788473A GB 5788473 A GB5788473 A GB 5788473A GB 1449838 A GB1449838 A GB 1449838A
Authority
GB
United Kingdom
Prior art keywords
characters
dec
tests
reception
counter
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
GB5788473A
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1449838A publication Critical patent/GB1449838A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/08—Speed or phase control by synchronisation signals the synchronisation signals recurring cyclically
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/08—Intermediate station arrangements, e.g. for branching, for tapping-off

Abstract

1449838 Data transmission; broadcast systems INTERNATIONAL BUSINESS MACHINES CORP 13 Dec 1973 [29 Dec 1972] 57884/73 Heading H4P Digital information broadcast from a central point by modulation of a sub carrier is stored on reception and selectively retrieved. At each receiver, characters are clocked by an extraction circuit into a shift register, each frame having sync. bits detection of which release a counter also receiving clock signals. To enable extraction of particular characters in a bit stream, a selector 5 can be set to a count corresponding to the position of characters, and when counter 14 corresponds to the set count, gate 17 passes the appropriate character and 14 resets gate 13, ready for setting on reception of the next sync group. Text characters can be applied to a character printing device and/or display unit 22 such as c.r.t. or liquid crystal panel. A plurality of tests may be transmitted simultaneously by t.d.n in which each frame has a number of interleaved characters corresponding to the number of tests.
GB5788473A 1972-12-29 1973-12-13 Receivers for communication systems Expired GB1449838A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US31956272A 1972-12-29 1972-12-29

Publications (1)

Publication Number Publication Date
GB1449838A true GB1449838A (en) 1976-09-15

Family

ID=23242775

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5788473A Expired GB1449838A (en) 1972-12-29 1973-12-13 Receivers for communication systems

Country Status (4)

Country Link
JP (1) JPS4999201A (en)
DE (1) DE2355991A1 (en)
FR (1) FR2212720B1 (en)
GB (1) GB1449838A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH645489A5 (en) * 1979-02-08 1984-09-28 Bbc Brown Boveri & Cie METHOD AND CIRCUIT ARRANGEMENT FOR CHARACTER TRANSFER BY MEANS OF AMPLITUDE-MODULATED BROADCASTING DEVICES.
JPS5864156U (en) * 1981-10-23 1983-04-30 クラリオン株式会社 FM multiplex data broadcast receiver
JPS60183674A (en) * 1984-03-02 1985-09-19 Omron Tateisi Electronics Co Controller of public sport stadium
JPH0616284B2 (en) * 1984-06-07 1994-03-02 オムロン株式会社 Portable receiver

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1031686A (en) * 1962-08-29 1966-06-02 Nippon Electric Co A synchronising device for a pulse code transmission system
US3387268A (en) * 1963-09-09 1968-06-04 Epstein Sidney Quotation monitoring unit
GB1036262A (en) * 1965-02-05 1966-07-20 Standard Telephones Cables Ltd Improvements in or relating to intercommunication systems
US3628147A (en) * 1969-12-09 1971-12-14 Tokyo Shibaura Electric Co Time-division multiplex mobile communication system
US3681760A (en) * 1970-08-24 1972-08-01 Motorola Inc Binary signal utilization and selective address detection system

Also Published As

Publication number Publication date
FR2212720A1 (en) 1974-07-26
DE2355991A1 (en) 1974-07-04
JPS4999201A (en) 1974-09-19
FR2212720B1 (en) 1978-04-21

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee