GB1299602A - Improvements relating to electrical communication systems - Google Patents

Improvements relating to electrical communication systems

Info

Publication number
GB1299602A
GB1299602A GB54504/69A GB5450469A GB1299602A GB 1299602 A GB1299602 A GB 1299602A GB 54504/69 A GB54504/69 A GB 54504/69A GB 5450469 A GB5450469 A GB 5450469A GB 1299602 A GB1299602 A GB 1299602A
Authority
GB
United Kingdom
Prior art keywords
chain
code
receiver
register
sync pulses
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
GB54504/69A
Inventor
Stanley Alfred Daniels
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.)
British Aircraft Corp Ltd
Original Assignee
British Aircraft Corp Ltd
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 British Aircraft Corp Ltd filed Critical British Aircraft Corp Ltd
Priority to GB54504/69A priority Critical patent/GB1299602A/en
Publication of GB1299602A publication Critical patent/GB1299602A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • H04Q9/14—Calling by using pulses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D11/00—Passenger or crew accommodation; Flight-deck installations not otherwise provided for
    • B64D11/0015—Arrangements for entertainment or communications, e.g. radio, television
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D11/00—Passenger or crew accommodation; Flight-deck installations not otherwise provided for
    • B64D11/0015—Arrangements for entertainment or communications, e.g. radio, television
    • B64D11/00155—Individual entertainment or communication system remote controls therefor, located in or connected to seat components, e.g. to seat back or arm rest
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/24—Time-division multiplex systems in which the allocation is indicated by an address the different channels being transmitted sequentially

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Hardware Design (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

1299602 Selective signalling BRITISH AIRCRAFT CORP Ltd 19 April 1971 [6 Jan 1970] 54504/69 Heading G4H [Also in Division H4] An electrical communication system for sequentially addressing a plurality of receivers connected to a common channel, includes: a pseudo-random pulse generator for transmitting a chain-code along the channel, each receiver including a shift-register connected to receive each of the pulses in the chain-code, means for storing a different one of the unique combinations in the chain and means for comparing the stored combination with the register contents, whereby each receiver is addressed in turn during the generation of a single chain-code. Each receiver is at a respective passenger seat in an aircraft, equality in the comparison causing information in a passenger request unit to be read out and transmitted on the channel before the next bit of the chain-code is sent. The means for storing the unique combination respective to a particular receiver is a milled plate which displaces four mechanical contacts each to one of two positions to connect the true or inverse output of a respective stage of the shift-register to a 4-input NAND gate. The chain-code is accompanied by major and minor sync pulses and several channels of multiplexed audio entertainment. The minor sync pulses discriminate between repetitions of the audio channels and reset a counter in the receiver if any channels are lost. The major sync pulses (one before each chain-code bit) are used in the addressing.
GB54504/69A 1970-01-06 1970-01-06 Improvements relating to electrical communication systems Expired GB1299602A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB54504/69A GB1299602A (en) 1970-01-06 1970-01-06 Improvements relating to electrical communication systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB54504/69A GB1299602A (en) 1970-01-06 1970-01-06 Improvements relating to electrical communication systems

Publications (1)

Publication Number Publication Date
GB1299602A true GB1299602A (en) 1972-12-13

Family

ID=10471228

Family Applications (1)

Application Number Title Priority Date Filing Date
GB54504/69A Expired GB1299602A (en) 1970-01-06 1970-01-06 Improvements relating to electrical communication systems

Country Status (1)

Country Link
GB (1) GB1299602A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2430154A1 (en) * 1978-06-28 1980-01-25 Inst Gornogo Dela Sibirskogo O METHOD FOR EXCHANGING DATA BETWEEN A CENTRAL STATION AND PERIPHERAL STATIONS AND SYSTEM IMPLEMENTING SAID METHOD
GB2124807A (en) * 1982-07-16 1984-02-22 British Broadcasting Corp Data transmission
GB2162724A (en) * 1984-07-20 1986-02-05 Messerschmitt Boelkow Blohm A method of and arrangement for carrying out passenger-related and/or air-steward-related functions in an aircraft
FR2574370A2 (en) * 1984-12-08 1986-06-13 Messerschmitt Boelkow Blohm METHOD AND DEVICE FOR PERFORMING, ON BOARD AN AIRPLANE, FUNCTIONS CONCERNING PASSENGERS AND ACCOMPANYING STAFF
US5889775A (en) * 1995-08-07 1999-03-30 Be Aerospace, Inc. Multi-stage switch
US6058288A (en) * 1995-08-07 2000-05-02 Sextant In-Flight Systems, Llc Passenger service and entertainment system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2430154A1 (en) * 1978-06-28 1980-01-25 Inst Gornogo Dela Sibirskogo O METHOD FOR EXCHANGING DATA BETWEEN A CENTRAL STATION AND PERIPHERAL STATIONS AND SYSTEM IMPLEMENTING SAID METHOD
GB2124807A (en) * 1982-07-16 1984-02-22 British Broadcasting Corp Data transmission
GB2162724A (en) * 1984-07-20 1986-02-05 Messerschmitt Boelkow Blohm A method of and arrangement for carrying out passenger-related and/or air-steward-related functions in an aircraft
FR2574370A2 (en) * 1984-12-08 1986-06-13 Messerschmitt Boelkow Blohm METHOD AND DEVICE FOR PERFORMING, ON BOARD AN AIRPLANE, FUNCTIONS CONCERNING PASSENGERS AND ACCOMPANYING STAFF
GB2168880A (en) * 1984-12-08 1986-06-25 Messerschmitt Boelkow Blohm A method of and arrangement for performing passenger-related and/or air-steward-related functions in an aircraft
US5889775A (en) * 1995-08-07 1999-03-30 Be Aerospace, Inc. Multi-stage switch
US6058288A (en) * 1995-08-07 2000-05-02 Sextant In-Flight Systems, Llc Passenger service and entertainment system

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Legal Events

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