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Showing content from https://patents.google.com/patent/GB2063018B/en below:

GB2063018B - Telecommunication systems - Google Patents

GB2063018B - Telecommunication systems - Google PatentsTelecommunication systems Info

Publication number: GB2063018B
Authority: GB; United Kingdom
Prior art keywords: telecommunication systems; telecommunication; systems
Prior art date: 1979-10-08
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

GB8032512A

Other versions

GB2063018A (en

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.)

General Electric Company PLC

Original Assignee

General Electric Company PLC

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.)

1979-10-08

Filing date

1980-10-08

Publication date

1984-03-28

1980-10-08 Application filed by General Electric Company PLC filed Critical General Electric Company PLC

1980-10-08 Priority to GB8032512A priority Critical patent/GB2063018B/en

1981-05-28 Publication of GB2063018A publication Critical patent/GB2063018A/en

1984-03-28 Application granted granted Critical

1984-03-28 Publication of GB2063018B publication Critical patent/GB2063018B/en

Status Expired legal-status Critical Current

Links

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
- H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/12—Arrangements providing for calling or supervisory signals
- H04J3/125—One of the channel pulses or the synchronisation pulse is also used for transmitting monitoring or supervisory signals
- 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
- H04M11/064—Data transmission during pauses in telephone conversation

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Time-Division Multiplex Systems (AREA)

GB8032512A 1979-10-08 1980-10-08 Telecommunication systems Expired GB2063018B (en) Priority Applications (1) Application Number Priority Date Filing Date Title GB8032512A GB2063018B (en) 1979-10-08 1980-10-08 Telecommunication systems Applications Claiming Priority (2) Application Number Priority Date Filing Date Title GB7934908 1979-10-08 GB8032512A GB2063018B (en) 1979-10-08 1980-10-08 Telecommunication systems Publications (2) Family ID=26273136 Family Applications (1) Application Number Title Priority Date Filing Date GB8032512A Expired GB2063018B (en) 1979-10-08 1980-10-08 Telecommunication systems Country Status (1) Cited By (51) * Cited by examiner, â Cited by third party Publication number Priority date Publication date Assignee Title US5636292A (en) 1995-05-08 1997-06-03 Digimarc Corporation Steganography methods employing embedded calibration data US5710834A (en) 1995-05-08 1998-01-20 Digimarc Corporation Method and apparatus responsive to a code signal conveyed through a graphic image US5745604A (en) 1993-11-18 1998-04-28 Digimarc Corporation Identification/authentication system using robust, distributed coding US5748783A (en) 1995-05-08 1998-05-05 Digimarc Corporation Method and apparatus for robust information coding US5748763A (en) 1993-11-18 1998-05-05 Digimarc Corporation Image steganography system featuring perceptually adaptive and globally scalable signal embedding US5809160A (en) 1992-07-31 1998-09-15 Digimarc Corporation Method for encoding auxiliary data within a source signal US5822436A (en) 1996-04-25 1998-10-13 Digimarc Corporation Photographic products and methods employing embedded information US5832119A (en) 1993-11-18 1998-11-03 Digimarc Corporation Methods for controlling systems using control signals embedded in empirical data US5841978A (en) 1993-11-18 1998-11-24 Digimarc Corporation Network linking method using steganographically embedded data objects US5841886A (en) 1993-11-18 1998-11-24 Digimarc Corporation Security system for photographic identification US5862260A (en) 1993-11-18 1999-01-19 Digimarc Corporation Methods for surveying dissemination of proprietary empirical data US6381341B1 (en) 1996-05-16 2002-04-30 Digimarc Corporation Watermark encoding method exploiting biases inherent in original signal US6408082B1 (en) 1996-04-25 2002-06-18 Digimarc Corporation Watermark detection using a fourier mellin transform US6411725B1 (en) 1995-07-27 2002-06-25 Digimarc Corporation Watermark enabled video objects US6424725B1 (en) 1996-05-16 2002-07-23 Digimarc Corporation Determining transformations of media signals with embedded code signals US6553129B1 (en) 1995-07-27 2003-04-22 Digimarc Corporation Computer system linked by using information in data objects US6567533B1 (en) 1993-11-18 2003-05-20 Digimarc Corporation Method and apparatus for discerning image distortion by reference to encoded marker signals US6580819B1 (en) 1993-11-18 2003-06-17 Digimarc Corporation Methods of producing security documents having digitally encoded data and documents employing same US6611607B1 (en) 1993-11-18 2003-08-26 Digimarc Corporation Integrating digital watermarks in multimedia content US6614914B1 (en) 1995-05-08 2003-09-02 Digimarc Corporation Watermark embedder and reader US6625297B1 (en) 2000-02-10 2003-09-23 Digimarc Corporation Self-orienting watermarks US6694042B2 (en) 1999-06-29 2004-02-17 Digimarc Corporation Methods for determining contents of media US6721440B2 (en) 1995-05-08 2004-04-13 Digimarc Corporation Low visibility watermarks using an out-of-phase color US6728390B2 (en) 1995-05-08 2004-04-27 Digimarc Corporation Methods and systems using multiple watermarks US6760463B2 (en) 1995-05-08 2004-07-06 Digimarc Corporation Watermarking methods and media US6768809B2 (en) 2000-02-14 2004-07-27 Digimarc Corporation Digital watermark screening and detection strategies US6788800B1 (en) 2000-07-25 2004-09-07 Digimarc Corporation Authenticating objects using embedded data US6804377B2 (en) 2000-04-19 2004-10-12 Digimarc Corporation Detecting information hidden out-of-phase in color channels US6804376B2 (en) 1998-01-20 2004-10-12 Digimarc Corporation Equipment employing watermark-based authentication function US6829368B2 (en) 2000-01-26 2004-12-07 Digimarc Corporation Establishing and interacting with on-line media collections using identifiers in media signals US6869023B2 (en) 2002-02-12 2005-03-22 Digimarc Corporation Linking documents through digital watermarking US6917691B2 (en) 1999-12-28 2005-07-12 Digimarc Corporation Substituting information based on watermark-enable linking US6965682B1 (en) 1999-05-19 2005-11-15 Digimarc Corp Data transmission by watermark proxy US6968057B2 (en) 1994-03-17 2005-11-22 Digimarc Corporation Emulsion products and imagery employing steganography US7027614B2 (en) 2000-04-19 2006-04-11 Digimarc Corporation Hiding information to reduce or offset perceptible artifacts US7039214B2 (en) 1999-11-05 2006-05-02 Digimarc Corporation Embedding watermark components during separate printing stages US7044395B1 (en) 1993-11-18 2006-05-16 Digimarc Corporation Embedding and reading imperceptible codes on objects US7058697B2 (en) 1995-07-27 2006-06-06 Digimarc Corporation Internet linking from image content US7436976B2 (en) 1995-07-27 2008-10-14 Digimarc Corporation Digital watermarking systems and methods US7486799B2 (en) 1995-05-08 2009-02-03 Digimarc Corporation Methods for monitoring audio and images on the internet US7694887B2 (en) 2001-12-24 2010-04-13 L-1 Secure Credentialing, Inc. Optically variable personalized indicia for identification documents US7712673B2 (en) 2002-12-18 2010-05-11 L-L Secure Credentialing, Inc. Identification document with three dimensional image of bearer US7728048B2 (en) 2002-12-20 2010-06-01 L-1 Secure Credentialing, Inc. Increasing thermal conductivity of host polymer used with laser engraving methods and compositions US7742737B2 (en) 2002-01-08 2010-06-22 The Nielsen Company (Us), Llc. Methods and apparatus for identifying a digital audio signal US7744002B2 (en) 2004-03-11 2010-06-29 L-1 Secure Credentialing, Inc. Tamper evident adhesive and identification document including same US7789311B2 (en) 2003-04-16 2010-09-07 L-1 Secure Credentialing, Inc. Three dimensional data storage US7793846B2 (en) 2001-12-24 2010-09-14 L-1 Secure Credentialing, Inc. Systems, compositions, and methods for full color laser engraving of ID documents US7853124B2 (en) 2004-04-07 2010-12-14 The Nielsen Company (Us), Llc Data insertion apparatus and methods for use with compressed audio/video data US7961949B2 (en) 1995-05-08 2011-06-14 Digimarc Corporation Extracting multiple identifiers from audio and video content US8204222B2 (en) 1993-11-18 2012-06-19 Digimarc Corporation Steganographic encoding and decoding of auxiliary codes in media signals US9106347B2 (en) 2002-10-23 2015-08-11 The Nielsen Company (Us), Llc Digital data insertion apparatus and methods for use with compressed audio/video data Families Citing this family (23) * Cited by examiner, â Cited by third party Publication number Priority date Publication date Assignee Title DE3263964D1 (en) * 1981-02-16 1985-07-11 British Telecomm Method and apparatus for transmitting data with digitally encoded speech US4476559A (en) * 1981-11-09 1984-10-09 At&T Bell Laboratories Simultaneous transmission of voice and data signals over a digital channel US4520477A (en) * 1983-06-27 1985-05-28 At&T Bell Laboratories Control information communication arrangement for a time division switching system US4516241A (en) * 1983-07-11 1985-05-07 At&T Bell Laboratories Bit compression coding with embedded signaling GB8330885D0 (en) * 1983-11-18 1983-12-29 British Telecomm Data transmission DE3523809A1 (en) * 1985-05-21 1986-11-27 Polygram Gmbh, 2000 Hamburg METHOD FOR TIME COMPRESSION OF INFORMATION IN DIGITAL FORM GB2175772B (en) * 1985-06-01 1989-01-05 Roger Paul Haywood Transmission of interviews US4730312A (en) * 1986-02-21 1988-03-08 San/Bar Corporation Voice, data or both over one telephone line in a T-1 carrier system GB2187364B (en) * 1986-02-26 1989-10-25 Sony Corp Methods of and apparatus for coding digital data NL8802291A (en) * 1988-09-16 1990-04-17 Koninkl Philips Electronics Nv DEVICE FOR TRANSMITTING DATA WORDS WHICH REPRESENT A DIGITIZED ANALOGUE SIGNAL AND A DEVICE FOR RECEIVING THE TRANSMITTED DATA WORDS. US5136586A (en) * 1989-12-04 1992-08-04 Academy Of Applied Science Method and apparatus for telephone line multiplex channeling of toll-quality voice and digital information US6301369B2 (en) 1992-07-31 2001-10-09 Digimarc Corporation Image marking to permit later identification US6449377B1 (en) 1995-05-08 2002-09-10 Digimarc Corporation Methods and systems for watermark processing of line art images US6983051B1 (en) 1993-11-18 2006-01-03 Digimarc Corporation Methods for audio watermarking and decoding US6757406B2 (en) 1993-11-18 2004-06-29 Digimarc Corporation Steganographic image processing US6560349B1 (en) 1994-10-21 2003-05-06 Digimarc Corporation Audio monitoring using steganographic information GB2316272B (en) * 1996-08-09 2000-12-27 Motorola Ltd Method of local routing and transcoder therefor US6807528B1 (en) 2001-05-08 2004-10-19 Dolby Laboratories Licensing Corporation Adding data to a compressed data frame EP1451774B1 (en) 2001-11-23 2008-08-20 Koninklijke Philips Electronics N.V. Watermark embedding DK1456810T3 (en) 2001-12-18 2011-07-18 L 1 Secure Credentialing Inc Multiple image security features to identify documents and methods of producing them EP1459239B1 (en) 2001-12-24 2012-04-04 L-1 Secure Credentialing, Inc. Covert variable information on id documents and methods of making same US7824029B2 (en) 2002-05-10 2010-11-02 L-1 Secure Credentialing, Inc. Identification card printer-assembler for over the counter card issuing WO2004049242A2 (en) 2002-11-26 2004-06-10 Digimarc Id Systems Systems and methods for managing and detecting fraud in image databases used with identification documents

1980
- 1980-10-08 GB GB8032512A patent/GB2063018B/en not_active Expired

Cited By (82) * Cited by examiner, â Cited by third party Publication number Priority date Publication date Assignee Title US5809160A (en) 1992-07-31 1998-09-15 Digimarc Corporation Method for encoding auxiliary data within a source signal US5930377A (en) 1992-07-31 1999-07-27 Digimarc Corporation Method for image encoding US7711143B2 (en) 1993-11-18 2010-05-04 Digimarc Corporation Methods for marking images US6026193A (en) 1993-11-18 2000-02-15 Digimarc Corporation Video steganography US5748763A (en) 1993-11-18 1998-05-05 Digimarc Corporation Image steganography system featuring perceptually adaptive and globally scalable signal embedding US5768426A (en) 1993-11-18 1998-06-16 Digimarc Corporation Graphics processing system employing embedded code signals US5745604A (en) 1993-11-18 1998-04-28 Digimarc Corporation Identification/authentication system using robust, distributed coding US6567533B1 (en) 1993-11-18 2003-05-20 Digimarc Corporation Method and apparatus for discerning image distortion by reference to encoded marker signals US5832119A (en) 1993-11-18 1998-11-03 Digimarc Corporation Methods for controlling systems using control signals embedded in empirical data US5841978A (en) 1993-11-18 1998-11-24 Digimarc Corporation Network linking method using steganographically embedded data objects US5841886A (en) 1993-11-18 1998-11-24 Digimarc Corporation Security system for photographic identification US5862260A (en) 1993-11-18 1999-01-19 Digimarc Corporation Methods for surveying dissemination of proprietary empirical data US6611607B1 (en) 1993-11-18 2003-08-26 Digimarc Corporation Integrating digital watermarks in multimedia content US7308110B2 (en) 1993-11-18 2007-12-11 Digimarc Corporation Methods for marking images US6590998B2 (en) 1993-11-18 2003-07-08 Digimarc Corporation Network linking method using information embedded in data objects that have inherent noise US6122392A (en) 1993-11-18 2000-09-19 Digimarc Corporation Signal processing to hide plural-bit information in image, video, and audio data US6975746B2 (en) 1993-11-18 2005-12-13 Digimarc Corporation Integrating digital watermarks in multimedia content US7044395B1 (en) 1993-11-18 2006-05-16 Digimarc Corporation Embedding and reading imperceptible codes on objects US6959386B2 (en) 1993-11-18 2005-10-25 Digimarc Corporation Hiding encrypted messages in information carriers US7171016B1 (en) 1993-11-18 2007-01-30 Digimarc Corporation Method for monitoring internet dissemination of image, video and/or audio files US6700990B1 (en) 1993-11-18 2004-03-02 Digimarc Corporation Digital watermark decoding method US6580819B1 (en) 1993-11-18 2003-06-17 Digimarc Corporation Methods of producing security documents having digitally encoded data and documents employing same US8204222B2 (en) 1993-11-18 2012-06-19 Digimarc Corporation Steganographic encoding and decoding of auxiliary codes in media signals US6438231B1 (en) 1994-03-17 2002-08-20 Digimarc Corporation Emulsion film media employing steganography US6111954A (en) 1994-03-17 2000-08-29 Digimarc Corporation Steganographic methods and media for photography US6968057B2 (en) 1994-03-17 2005-11-22 Digimarc Corporation Emulsion products and imagery employing steganography US7486799B2 (en) 1995-05-08 2009-02-03 Digimarc Corporation Methods for monitoring audio and images on the internet US5636292A (en) 1995-05-08 1997-06-03 Digimarc Corporation Steganography methods employing embedded calibration data US6614914B1 (en) 1995-05-08 2003-09-02 Digimarc Corporation Watermark embedder and reader US5748783A (en) 1995-05-08 1998-05-05 Digimarc Corporation Method and apparatus for robust information coding US6718047B2 (en) 1995-05-08 2004-04-06 Digimarc Corporation Watermark embedder and reader US6721440B2 (en) 1995-05-08 2004-04-13 Digimarc Corporation Low visibility watermarks using an out-of-phase color US6728390B2 (en) 1995-05-08 2004-04-27 Digimarc Corporation Methods and systems using multiple watermarks US6744906B2 (en) 1995-05-08 2004-06-01 Digimarc Corporation Methods and systems using multiple watermarks US7564992B2 (en) 1995-05-08 2009-07-21 Digimarc Corporation Content identification through deriving identifiers from video, images and audio US6760463B2 (en) 1995-05-08 2004-07-06 Digimarc Corporation Watermarking methods and media US7961949B2 (en) 1995-05-08 2011-06-14 Digimarc Corporation Extracting multiple identifiers from audio and video content US7970167B2 (en) 1995-05-08 2011-06-28 Digimarc Corporation Deriving identifying data from video and audio US5710834A (en) 1995-05-08 1998-01-20 Digimarc Corporation Method and apparatus responsive to a code signal conveyed through a graphic image US7436976B2 (en) 1995-07-27 2008-10-14 Digimarc Corporation Digital watermarking systems and methods US6553129B1 (en) 1995-07-27 2003-04-22 Digimarc Corporation Computer system linked by using information in data objects US6411725B1 (en) 1995-07-27 2002-06-25 Digimarc Corporation Watermark enabled video objects US7058697B2 (en) 1995-07-27 2006-06-06 Digimarc Corporation Internet linking from image content US7050603B2 (en) 1995-07-27 2006-05-23 Digimarc Corporation Watermark encoded video, and related methods US5822436A (en) 1996-04-25 1998-10-13 Digimarc Corporation Photographic products and methods employing embedded information US6751320B2 (en) 1996-04-25 2004-06-15 Digimarc Corporation Method and system for preventing reproduction of professional photographs US6408082B1 (en) 1996-04-25 2002-06-18 Digimarc Corporation Watermark detection using a fourier mellin transform US6381341B1 (en) 1996-05-16 2002-04-30 Digimarc Corporation Watermark encoding method exploiting biases inherent in original signal US6424725B1 (en) 1996-05-16 2002-07-23 Digimarc Corporation Determining transformations of media signals with embedded code signals US7054463B2 (en) 1998-01-20 2006-05-30 Digimarc Corporation Data encoding using frail watermarks US6804376B2 (en) 1998-01-20 2004-10-12 Digimarc Corporation Equipment employing watermark-based authentication function US6850626B2 (en) 1998-01-20 2005-02-01 Digimarc Corporation Methods employing multiple watermarks US6965682B1 (en) 1999-05-19 2005-11-15 Digimarc Corp Data transmission by watermark proxy US6917724B2 (en) 1999-06-29 2005-07-12 Digimarc Corporation Methods for opening file on computer via optical sensing US6694042B2 (en) 1999-06-29 2004-02-17 Digimarc Corporation Methods for determining contents of media US7039214B2 (en) 1999-11-05 2006-05-02 Digimarc Corporation Embedding watermark components during separate printing stages US7773770B2 (en) 1999-12-28 2010-08-10 Digimarc Corporation Substituting or replacing components in media objects based on steganographic encoding US6917691B2 (en) 1999-12-28 2005-07-12 Digimarc Corporation Substituting information based on watermark-enable linking US7362879B2 (en) 1999-12-28 2008-04-22 Digimarc Corporation Substituting objects based on steganographic encoding US8027510B2 (en) 2000-01-13 2011-09-27 Digimarc Corporation Encoding and decoding media signals US7756290B2 (en) 2000-01-13 2010-07-13 Digimarc Corporation Detecting embedded signals in media content using coincidence metrics US6829368B2 (en) 2000-01-26 2004-12-07 Digimarc Corporation Establishing and interacting with on-line media collections using identifiers in media signals US6993153B2 (en) 2000-02-10 2006-01-31 Digimarc Corporation Self-orienting watermarks US6625297B1 (en) 2000-02-10 2003-09-23 Digimarc Corporation Self-orienting watermarks US6768809B2 (en) 2000-02-14 2004-07-27 Digimarc Corporation Digital watermark screening and detection strategies US6804377B2 (en) 2000-04-19 2004-10-12 Digimarc Corporation Detecting information hidden out-of-phase in color channels US7027614B2 (en) 2000-04-19 2006-04-11 Digimarc Corporation Hiding information to reduce or offset perceptible artifacts US6788800B1 (en) 2000-07-25 2004-09-07 Digimarc Corporation Authenticating objects using embedded data US6823075B2 (en) 2000-07-25 2004-11-23 Digimarc Corporation Authentication watermarks for printed objects and related applications US7793846B2 (en) 2001-12-24 2010-09-14 L-1 Secure Credentialing, Inc. Systems, compositions, and methods for full color laser engraving of ID documents US7694887B2 (en) 2001-12-24 2010-04-13 L-1 Secure Credentialing, Inc. Optically variable personalized indicia for identification documents US7742737B2 (en) 2002-01-08 2010-06-22 The Nielsen Company (Us), Llc. Methods and apparatus for identifying a digital audio signal US8548373B2 (en) 2002-01-08 2013-10-01 The Nielsen Company (Us), Llc Methods and apparatus for identifying a digital audio signal US6869023B2 (en) 2002-02-12 2005-03-22 Digimarc Corporation Linking documents through digital watermarking US9106347B2 (en) 2002-10-23 2015-08-11 The Nielsen Company (Us), Llc Digital data insertion apparatus and methods for use with compressed audio/video data US7712673B2 (en) 2002-12-18 2010-05-11 L-L Secure Credentialing, Inc. Identification document with three dimensional image of bearer US7728048B2 (en) 2002-12-20 2010-06-01 L-1 Secure Credentialing, Inc. Increasing thermal conductivity of host polymer used with laser engraving methods and compositions US7789311B2 (en) 2003-04-16 2010-09-07 L-1 Secure Credentialing, Inc. Three dimensional data storage US7744002B2 (en) 2004-03-11 2010-06-29 L-1 Secure Credentialing, Inc. Tamper evident adhesive and identification document including same US7853124B2 (en) 2004-04-07 2010-12-14 The Nielsen Company (Us), Llc Data insertion apparatus and methods for use with compressed audio/video data US8600216B2 (en) 2004-04-07 2013-12-03 The Nielsen Company (Us), Llc Data insertion apparatus and methods for use with compressed audio/video data US9332307B2 (en) 2004-04-07 2016-05-03 The Nielsen Company (Us), Llc Data insertion apparatus and methods for use with compressed audio/video data Also Published As Similar Documents Legal Events Date Code Title Description 1989-06-01 PCNP Patent ceased through non-payment of renewal fee

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