GB2249919B - Modem system - Google Patents

Modem system

Info

Publication number
GB2249919B
GB2249919B GB9113757A GB9113757A GB2249919B GB 2249919 B GB2249919 B GB 2249919B GB 9113757 A GB9113757 A GB 9113757A GB 9113757 A GB9113757 A GB 9113757A GB 2249919 B GB2249919 B GB 2249919B
Authority
GB
United Kingdom
Prior art keywords
modem system
modem
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 - Fee Related
Application number
GB9113757A
Other versions
GB9113757D0 (en
GB2249919A (en
Inventor
Martin Bernard Litherland
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.)
JEKYLL ELECTRONIC TECHNOLOGY L
Original Assignee
JEKYLL ELECTRONIC TECHNOLOGY L
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 claimed from GB909015004A external-priority patent/GB9015004D0/en
Application filed by JEKYLL ELECTRONIC TECHNOLOGY L filed Critical JEKYLL ELECTRONIC TECHNOLOGY L
Priority to GB9113757A priority Critical patent/GB2249919B/en
Publication of GB9113757D0 publication Critical patent/GB9113757D0/en
Publication of GB2249919A publication Critical patent/GB2249919A/en
Application granted granted Critical
Publication of GB2249919B publication Critical patent/GB2249919B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0002—Modulated-carrier systems analog front ends; means for connecting modulators, demodulators or transceivers to a transmission line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephonic Communication Services (AREA)
GB9113757A 1990-07-06 1991-06-26 Modem system Expired - Fee Related GB2249919B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9113757A GB2249919B (en) 1990-07-06 1991-06-26 Modem system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB909015004A GB9015004D0 (en) 1990-07-06 1990-07-06 Modem
GB9113757A GB2249919B (en) 1990-07-06 1991-06-26 Modem system

Publications (3)

Publication Number Publication Date
GB9113757D0 GB9113757D0 (en) 1991-08-14
GB2249919A GB2249919A (en) 1992-05-20
GB2249919B true GB2249919B (en) 1994-07-20

Family

ID=26297293

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9113757A Expired - Fee Related GB2249919B (en) 1990-07-06 1991-06-26 Modem system

Country Status (1)

Country Link
GB (1) GB2249919B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5369687A (en) * 1992-12-17 1994-11-29 Practical Peripherals, Inc. Apparatus for electrically isolating a telephone line from a data device
WO1999053627A1 (en) 1998-04-10 1999-10-21 Chrimar Systems, Inc. Doing Business As Cms Technologies System for communicating with electronic equipment on a network
US6831976B1 (en) 1998-12-16 2004-12-14 Agere Systems, Inc. Telephone line-powered power supply for ancillary equipment and method of operation thereof
US7733965B2 (en) 2003-05-29 2010-06-08 Teridian Semiconductor Corp. Encoding method and apparatus for a dual mode super source follower circuit
EP1634436A1 (en) 2003-05-29 2006-03-15 TDK Semiconductor Corporation A method and apparatus for full duplex signaling across a pulse transformer
GB2596799A (en) * 2020-07-03 2022-01-12 Craig Stewart Sutherland Alex Modem unit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4395590A (en) * 1980-11-03 1983-07-26 Universal Data Systems, Inc. Line powered modem
US4996706A (en) * 1986-12-02 1991-02-26 Samsung Electronics Co., Ltd. Method of controlling the electric power supplied to a modem

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4395590A (en) * 1980-11-03 1983-07-26 Universal Data Systems, Inc. Line powered modem
US4996706A (en) * 1986-12-02 1991-02-26 Samsung Electronics Co., Ltd. Method of controlling the electric power supplied to a modem

Also Published As

Publication number Publication date
GB9113757D0 (en) 1991-08-14
GB2249919A (en) 1992-05-20

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Legal Events

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

Effective date: 20060626