CA2113840A1 - Telecommunication device operating under an enhanced tdd protocol - Google Patents

Telecommunication device operating under an enhanced tdd protocol

Info

Publication number
CA2113840A1
CA2113840A1 CA002113840A CA2113840A CA2113840A1 CA 2113840 A1 CA2113840 A1 CA 2113840A1 CA 002113840 A CA002113840 A CA 002113840A CA 2113840 A CA2113840 A CA 2113840A CA 2113840 A1 CA2113840 A1 CA 2113840A1
Authority
CA
Canada
Prior art keywords
tdd
enhanced
enhanced tdd
character
telecommunication device
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.)
Granted
Application number
CA002113840A
Other languages
French (fr)
Other versions
CA2113840C (en
Inventor
Robert M. Engelke
Kevin Colwell
Ronald W. Schultz
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.)
Ultratec Inc
Original Assignee
Robert M. Engelke
Kevin Colwell
Ronald W. Schultz
Ultratec, Inc.
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 M. Engelke, Kevin Colwell, Ronald W. Schultz, Ultratec, Inc. filed Critical Robert M. Engelke
Publication of CA2113840A1 publication Critical patent/CA2113840A1/en
Application granted granted Critical
Publication of CA2113840C publication Critical patent/CA2113840C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/247—Telephone sets including user guidance or feature selection means facilitating their use
    • H04M1/2474—Telephone terminals specially adapted for disabled people
    • H04M1/2475—Telephone terminals specially adapted for disabled people for a hearing impaired user

Abstract

A telecommunication device for the deaf (12, 14, 16, 20, 22, 24, 26, 28) is designed to operate under an enhanced TDD
communication protocol. The TDD (12, 14, 16, 20, 22, 24, 26, 28) is capable of communicating with conventional TDDs operating under normal Baudot/Weitbrecht communications, but is also capable of communicating with a similarly enhanced TDD utiliz-ing an enhanced protocol with a faster data transfer rate. The enhanced TDD is capable of signaling to another remote TDD
through the use of a synchronization character that it is capable of enhanced TDD communications. If a similar synchronization character is received from the remote station, both TDDs can then switch to enhanced TDD communication with its advantages of speed and enlarged character set. The synchronization character is especially designed so as not to interfere with the operation of a conventional TDD which might receive the character and also to be sufficiently distinctive so as to be capable of definite re-ception by enhanced TDD machines with minimum error.
CA002113840A 1992-05-20 1993-05-19 Telecommunication device operating under an enhanced tdd protocol Expired - Fee Related CA2113840C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US88655292A 1992-05-20 1992-05-20
US886,552 1992-05-20
PCT/US1993/004760 WO1993023947A1 (en) 1992-05-20 1993-05-19 Telecommunication device operating under an enhanced tdd protocol

Publications (2)

Publication Number Publication Date
CA2113840A1 true CA2113840A1 (en) 1993-11-25
CA2113840C CA2113840C (en) 2003-02-11

Family

ID=25389243

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002113840A Expired - Fee Related CA2113840C (en) 1992-05-20 1993-05-19 Telecommunication device operating under an enhanced tdd protocol

Country Status (7)

Country Link
US (1) US5517548A (en)
EP (1) EP0596079B1 (en)
AT (1) ATE194900T1 (en)
AU (1) AU4252493A (en)
CA (1) CA2113840C (en)
DE (1) DE69329054D1 (en)
WO (1) WO1993023947A1 (en)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5581593A (en) * 1994-06-10 1996-12-03 Ultratec, Inc. Combination telephone and alphanumeric entry device
US5809425A (en) * 1995-01-03 1998-09-15 Ultratec, Inc. Gateway for low cost alphanumeric paging entry system
US5978654A (en) * 1995-01-03 1999-11-02 Ultratec, Inc. Alphanumeric paging entry system
US6594346B2 (en) 1997-09-08 2003-07-15 Ultratec, Inc. Relay for personal interpreter
US5909482A (en) 1997-09-08 1999-06-01 Ultratec, Inc. Relay for personal interpreter
US6603835B2 (en) 1997-09-08 2003-08-05 Ultratec, Inc. System for text assisted telephony
US5974116A (en) * 1998-07-02 1999-10-26 Ultratec, Inc. Personal interpreter
UA70375C2 (en) * 1999-08-04 2004-10-15 Квалкомм Інкорпорейтид Method for transmitting buadot tones (variants) and a device for the realization of the method
US7031381B1 (en) * 1999-10-27 2006-04-18 Paradyne Corporation Method and apparatus for reducing transmission errors caused by periodic transients in digital subscriber line (DSL) communication systems
US6961320B1 (en) * 2000-04-03 2005-11-01 Hughes Electronics Corporation In-band transmission of TTY/TTD signals for systems employing low bit-rate voice compression
GB2382744B (en) 2000-09-19 2004-06-02 Ultratec Inc Relay for personal interpreter
US7881441B2 (en) * 2005-06-29 2011-02-01 Ultratec, Inc. Device independent text captioned telephone service
US8416925B2 (en) 2005-06-29 2013-04-09 Ultratec, Inc. Device independent text captioned telephone service
US7031658B2 (en) * 2003-03-07 2006-04-18 Harris Corporation System and method for single radio retransmission using a half duplex radio
US20050086699A1 (en) * 2003-10-16 2005-04-21 Hamilton Relay, Inc. Video relay system and method
US8515024B2 (en) 2010-01-13 2013-08-20 Ultratec, Inc. Captioned telephone service
WO2005081511A1 (en) * 2004-02-18 2005-09-01 Ultratec, Inc. Captioned telephone service
US7245705B2 (en) * 2004-02-26 2007-07-17 Hamilton Relay, Inc. Internet protocol (IP) relay system and method
US11258900B2 (en) 2005-06-29 2022-02-22 Ultratec, Inc. Device independent text captioned telephone service
US20070048076A1 (en) * 2005-08-31 2007-03-01 To Chun Y Fastening system for a ring binder mechanism
US7620158B2 (en) 2005-09-02 2009-11-17 Hamilton Relay, Inc. Video relay system and method
US8842552B2 (en) * 2012-12-17 2014-09-23 Litepoint Corporation Method of facilitating testing of multiple time-division-duplex (TDD) data packet signal transceivers
US8842549B2 (en) 2012-12-17 2014-09-23 Litepoint Corporation System and method for parallel testing of multiple data packet signal transceivers
US10878721B2 (en) 2014-02-28 2020-12-29 Ultratec, Inc. Semiautomated relay method and apparatus
US20180034961A1 (en) 2014-02-28 2018-02-01 Ultratec, Inc. Semiautomated Relay Method and Apparatus
US20180270350A1 (en) 2014-02-28 2018-09-20 Ultratec, Inc. Semiautomated relay method and apparatus
US10389876B2 (en) 2014-02-28 2019-08-20 Ultratec, Inc. Semiautomated relay method and apparatus
US10748523B2 (en) 2014-02-28 2020-08-18 Ultratec, Inc. Semiautomated relay method and apparatus
US11539900B2 (en) 2020-02-21 2022-12-27 Ultratec, Inc. Caption modification and augmentation systems and methods for use by hearing assisted user

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3507997A (en) * 1966-08-22 1970-04-21 Robert H Weitbrecht Frequency-shift teletypewriter
US3896267A (en) * 1973-09-21 1975-07-22 Phonics Corp Telecommunications system for the hearing impaired utilizing baudot-ascii code selection
DE2749923B2 (en) * 1977-11-08 1981-07-16 Hörgeschädigten Technik Münster GmbH, 4400 Münster Device for written communication via the telephone network, in particular for the hearing impaired
US4959847A (en) * 1989-04-05 1990-09-25 Ultratec, Inc. Telecommunications device with automatic code detection and switching
US5091906A (en) * 1989-12-18 1992-02-25 Motorola, Inc. Quasi-duplex radio system using bi-directional hole extension
US5134633A (en) * 1990-11-30 1992-07-28 At&T Bell Laboratories Digital communications synchronization scheme
US5121421A (en) * 1990-12-13 1992-06-09 Alheim Curtis C Interactive telephone communication system for hearing-impaired person

Also Published As

Publication number Publication date
US5517548A (en) 1996-05-14
DE69329054D1 (en) 2000-08-24
EP0596079A1 (en) 1994-05-11
EP0596079A4 (en) 1995-05-17
EP0596079B1 (en) 2000-07-19
CA2113840C (en) 2003-02-11
AU4252493A (en) 1993-12-13
ATE194900T1 (en) 2000-08-15
WO1993023947A1 (en) 1993-11-25

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