GB1533942A - Transmission of signals - Google Patents

Transmission of signals

Info

Publication number
GB1533942A
GB1533942A GB2718477A GB2718477A GB1533942A GB 1533942 A GB1533942 A GB 1533942A GB 2718477 A GB2718477 A GB 2718477A GB 2718477 A GB2718477 A GB 2718477A GB 1533942 A GB1533942 A GB 1533942A
Authority
GB
United Kingdom
Prior art keywords
signal
pulse
monostable
amplified
capacitor
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
GB2718477A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1533942A publication Critical patent/GB1533942A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/22—Adaptations for optical transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/516—Details of coding or modulation
    • H04B10/524—Pulse modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/60—Receivers
    • H04B10/66—Non-coherent receivers, e.g. using direct detection
    • H04B10/69—Electrical arrangements in the receiver

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Optical Communication System (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

1533942 Optical transmission system ROBERT BOSCH GmbH 29 June 1977 [1 July 1976] 27184/77 Heading G1A A signal is transmitted along a glass fibre using pulse frequency modulation of the optical signal. A second signal may be transmitted in multiplex using pulse duration modulation. The signal is fed to voltage controlled oscillator 2, the output of which is shaped by monostable 3, amplified (4) and used to modulate laser or LED 5 feeding the glass fibre 6. The signal detected (7) at the other end of the fibre is amplified (16), limited (17), shaped (8) and low pass filtered 9. The second signal 18, if present, modulates the monostable duration. This signal is detected after limiting by circuit 11 which passes current from source 20 to capacitor 19 during each pulse, stores the peak values at 12 and discharges the capacitor between pulses.
GB2718477A 1976-07-01 1977-06-29 Transmission of signals Expired GB1533942A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762629604 DE2629604A1 (en) 1976-07-01 1976-07-01 SYSTEM FOR TRANSMISSION OF SIGNALS, IN PARTICULAR TELEVISION SIGNALS, VIA FIBERGLASS

Publications (1)

Publication Number Publication Date
GB1533942A true GB1533942A (en) 1978-11-29

Family

ID=5981971

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2718477A Expired GB1533942A (en) 1976-07-01 1977-06-29 Transmission of signals

Country Status (3)

Country Link
JP (1) JPS535507A (en)
DE (1) DE2629604A1 (en)
GB (1) GB1533942A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1134917A2 (en) * 2000-03-15 2001-09-19 The Boeing Company Generating methods for single and multi-channel wideband optical analog pulse positioned waveforms
CN113300205A (en) * 2021-05-20 2021-08-24 上海瀚宇光纤通信技术有限公司 Fiber laser protection system and device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2093664A (en) * 1981-02-18 1982-09-02 Philips Electronic Associated Wideband signal distribution

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1134917A2 (en) * 2000-03-15 2001-09-19 The Boeing Company Generating methods for single and multi-channel wideband optical analog pulse positioned waveforms
EP1134917A3 (en) * 2000-03-15 2004-09-08 The Boeing Company Generating methods for single and multi-channel wideband optical analog pulse positioned waveforms
CN113300205A (en) * 2021-05-20 2021-08-24 上海瀚宇光纤通信技术有限公司 Fiber laser protection system and device

Also Published As

Publication number Publication date
JPS535507A (en) 1978-01-19
DE2629604A1 (en) 1978-01-12

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Legal Events

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