WO1998051069A3 - Method and system for decoding data in a signal - Google Patents

Method and system for decoding data in a signal Download PDF

Info

Publication number
WO1998051069A3
WO1998051069A3 PCT/US1998/009172 US9809172W WO9851069A3 WO 1998051069 A3 WO1998051069 A3 WO 1998051069A3 US 9809172 W US9809172 W US 9809172W WO 9851069 A3 WO9851069 A3 WO 9851069A3
Authority
WO
WIPO (PCT)
Prior art keywords
signal
teletext
data
module
closed caption
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.)
Ceased
Application number
PCT/US1998/009172
Other languages
French (fr)
Other versions
WO1998051069A2 (en
Inventor
Jean Etienne Gaudreau
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.)
WavePhore Inc
Original Assignee
WavePhore 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 WavePhore Inc filed Critical WavePhore Inc
Priority to CA002293690A priority Critical patent/CA2293690A1/en
Priority to AU73696/98A priority patent/AU7369698A/en
Priority to JP54840798A priority patent/JP2001524292A/en
Priority to EP98920986A priority patent/EP1008261A4/en
Publication of WO1998051069A2 publication Critical patent/WO1998051069A2/en
Publication of WO1998051069A3 publication Critical patent/WO1998051069A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/025—Systems for the transmission of digital non-picture data, e.g. of text during the active part of a television frame
    • H04N7/035—Circuits for the digital non-picture data signal, e.g. for slicing of the data signal, for regeneration of the data-clock signal, for error detection or correction of the data signal
    • H04N7/0355—Circuits for the digital non-picture data signal, e.g. for slicing of the data signal, for regeneration of the data-clock signal, for error detection or correction of the data signal for discrimination of the binary level of the digital data, e.g. amplitude slicers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
    • H04N5/211—Ghost signal cancellation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/025—Systems for the transmission of digital non-picture data, e.g. of text during the active part of a television frame
    • H04N7/035—Circuits for the digital non-picture data signal, e.g. for slicing of the data signal, for regeneration of the data-clock signal, for error detection or correction of the data signal
    • H04N7/0352—Circuits for the digital non-picture data signal, e.g. for slicing of the data signal, for regeneration of the data-clock signal, for error detection or correction of the data signal for regeneration of the clock signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
    • H04N7/088—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital
    • H04N7/0882—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital for the transmission of character code signals, e.g. for teletext
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
    • H04N7/088—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital
    • H04N7/0884—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital for the transmission of additional display-information, e.g. menu for programme or channel selection
    • H04N7/0885—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital for the transmission of additional display-information, e.g. menu for programme or channel selection for the transmission of subtitles

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Television Systems (AREA)

Abstract

A decoding system (Fig. 4, 106) for extracting digital teletext and closed caption data from a video signal comprises a software implementation executed on a processor (Fig. 4, 408) which includes both a closed caption module (Fig. 5) and a teletext module (Fig. 8). The decoder system calls the closed caption module to detect a clock synchronization signal (Fig. 5, 502). Upon finding such signal, the closed caption module synchronizes to the signal (Fig. 5, 506), identifies a framing code (Fig. 5, 504), and extracts the closed caption data (Fig. 5, 506). Similarly, the decoder system may call the teletext module for the teletext lines, which also synchronizes using a teletext clock synchronization signal. When the clock synchronization signal is detected (Fig. 8, 802), the teletext module interpolates the incoming data to reconstruct the data signal (Fig. 8, 804). The data signal is then processed to normalize the amplitude (Fig. 8, 806) and reduce the 'ghost' effects of signal echoes (Fig. 8, 808) prior to the slicing of the data signal (Fig. 8, 812). Hamming code error detection may be used to ensure the accuracy of the data (Fig. 8, 814).
PCT/US1998/009172 1997-05-05 1998-05-05 Method and system for decoding data in a signal Ceased WO1998051069A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA002293690A CA2293690A1 (en) 1997-05-05 1998-05-05 Method and system for decoding data in a signal
AU73696/98A AU7369698A (en) 1997-05-05 1998-05-05 Method and system for decoding data in a signal
JP54840798A JP2001524292A (en) 1997-05-05 1998-05-05 Method and system for decoding data in a signal
EP98920986A EP1008261A4 (en) 1997-05-05 1998-05-05 Method and system for decoding data in a signal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/841,794 1997-05-05
US08/841,794 US6239843B1 (en) 1997-05-05 1997-05-05 Method and system for decoding data in a signal

Publications (2)

Publication Number Publication Date
WO1998051069A2 WO1998051069A2 (en) 1998-11-12
WO1998051069A3 true WO1998051069A3 (en) 1999-03-18

Family

ID=25285704

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/009172 Ceased WO1998051069A2 (en) 1997-05-05 1998-05-05 Method and system for decoding data in a signal

Country Status (6)

Country Link
US (1) US6239843B1 (en)
EP (1) EP1008261A4 (en)
JP (1) JP2001524292A (en)
AU (1) AU7369698A (en)
CA (1) CA2293690A1 (en)
WO (1) WO1998051069A2 (en)

Families Citing this family (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6784943B1 (en) * 1997-12-23 2004-08-31 Thomson Licensing S.A. Auxiliary digital data extractor in a television
US6067122A (en) * 1998-04-23 2000-05-23 Intel Corporation Host-based anti-ghosting of teletext data based on non-oversampled data
US6215526B1 (en) * 1998-11-06 2001-04-10 Tivo, Inc. Analog video tagging and encoding system
DE19857039A1 (en) * 1998-12-10 2000-06-21 Siemens Ag Microelectronic structure
KR100565571B1 (en) * 1999-02-10 2006-03-29 엘지전자 주식회사 Digital TV caption information processing device
US6789124B1 (en) * 1999-07-22 2004-09-07 General Instrument Corporation Multi-standard enhanced inband data receiver
US7124221B1 (en) * 1999-10-19 2006-10-17 Rambus Inc. Low latency multi-level communication interface
DE19950955C2 (en) * 1999-10-21 2001-09-20 Lear Automotive Electronics Gm Data processing of television text data in a television receiver circuit
JP4603115B2 (en) * 1999-11-01 2010-12-22 Ｎｅｃディスプレイソリューションズ株式会社 Image display device
US7415718B1 (en) * 2000-05-31 2008-08-19 Aol Llc Receiving and processing vertical blanking interval data
JP2002158975A (en) * 2000-11-22 2002-05-31 Mitsubishi Electric Corp Slice circuit
US6903779B2 (en) * 2001-05-16 2005-06-07 Yahoo! Inc. Method and system for displaying related components of a media stream that has been transmitted over a computer network
JP3883904B2 (en) * 2001-06-15 2007-02-21 シャープ株式会社 Display device and display system
JP4109004B2 (en) * 2002-04-01 2008-06-25 松下電器産業株式会社 Data signal extractor
JP4091360B2 (en) 2002-07-02 2008-05-28 松下電器産業株式会社 Data slicing apparatus and data slicing method
SE0202807L (en) * 2002-09-23 2004-03-24 Telia Ab Client terminal, procedure and computer program for flexible distribution of separated subtitles, teletext information and TV signal
SE0202806L (en) * 2002-09-23 2004-03-24 Telia Ab System, procedure and computer program product for flexible distribution of teletext information
SE0202808L (en) * 2002-09-23 2004-03-24 Telia Ab Extraction means, method and computer program product for separation of TV signals, teletext information and subtitles
GB2398199A (en) * 2003-02-10 2004-08-11 Nokia Corp A system for transferring content audio and video data from a provider to a personal digital assistant
TWI352542B (en) * 2004-02-17 2011-11-11 Hon Hai Prec Ind Co Ltd Apparatus and method for adjusting brightness and
US20050285975A1 (en) * 2004-06-28 2005-12-29 Broadcom Corporation Software implementing parts of a blanking interval encoder/decoder
CN101010915B (en) * 2004-06-30 2011-11-02 Nxp股份有限公司 Method for the non-bitrate-dependent encoding of digital signals on a bus system
US7546517B2 (en) * 2004-08-03 2009-06-09 President And Fellows Of Harvard College Error-correcting circuit for high density memory
CN101077006A (en) * 2004-11-19 2007-11-21 Tivo股份有限公司 Method and apparatus for secure transfer and playback of multimedia content
KR20060118876A (en) * 2005-05-17 2006-11-24 삼성전자주식회사 Display device and control method thereof
KR100661659B1 (en) 2005-06-07 2006-12-26 삼성전자주식회사 Display device and control method thereof
US8643780B2 (en) * 2005-06-28 2014-02-04 Realtek Semiconductor Corp. Apparatus and method for detecting vertical blanking interval
TWI268704B (en) * 2005-06-28 2006-12-11 Realtek Semiconductor Corp Apparatus and method for detecting vertical blanking interval
KR100696109B1 (en) * 2005-07-07 2007-03-20 삼성전자주식회사 Display device and signal processing method
KR100718080B1 (en) * 2005-07-25 2007-05-16 삼성전자주식회사 Broadcast receiving apparatus and method thereof for displaying closed caption data
TWI279139B (en) * 2005-09-16 2007-04-11 Realtek Semiconductor Corp Data recovery device and method
US20070252902A1 (en) * 2006-04-28 2007-11-01 Mediatek Inc. Teletext data slicer and method thereof
US7661121B2 (en) 2006-06-22 2010-02-09 Tivo, Inc. In-band data recognition and synchronization system
US7873982B2 (en) * 2006-06-22 2011-01-18 Tivo Inc. Method and apparatus for creating and viewing customized multimedia segments
US8261300B2 (en) * 2006-06-23 2012-09-04 Tivo Inc. Method and apparatus for advertisement placement in a user dialog on a set-top box
US7739596B2 (en) * 2007-04-06 2010-06-15 Yahoo! Inc. Method and system for displaying contextual advertisements with media
US8471960B2 (en) 2008-11-24 2013-06-25 Mediatek Inc. Method capable of avoiding data error from incorrect sampling points
TWI396444B (en) * 2009-12-24 2013-05-11 Himax Media Solutions Inc Decoder and method for adaptively generating a clock window
US9615140B1 (en) 2010-05-27 2017-04-04 Edward Malinowski Method and device for delivery of subtitle synchronized with a media stream
US8611762B2 (en) * 2010-11-10 2013-12-17 Nec Laboratories America, Inc. System and method for frequency-domain chromatic dispersion and polarization mode dispersion compensation with time-domain channel estimation
KR101539543B1 (en) * 2014-12-17 2015-07-24 (주) 넥스트칩 Method and apparatus for receiving video signal
US10284180B2 (en) * 2017-06-09 2019-05-07 Nxp B.V. Circuits for correction of signals susceptible to baseline wander
US11728692B2 (en) 2020-05-19 2023-08-15 Powermat Technologies Ltd. Modem design for wireless power transfer

Citations (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4380027A (en) * 1980-12-08 1983-04-12 William Leventer Data encoding for television
US4424533A (en) * 1981-07-10 1984-01-03 Matsushita Electric Industrial Co., Ltd. Phase distortion detection circuitry for low cost automatic equalizer
US4434438A (en) * 1981-07-10 1984-02-28 Matsushita Electric Industrial Co., Ltd. Low cost automatic equalizer
US4673979A (en) * 1984-06-15 1987-06-16 Matsushita Electric Industrial Co., Ltd. Digital data reproducing system
US4719510A (en) * 1985-10-16 1988-01-12 U.S. Philips Corporation Teletext decoders
US4725886A (en) * 1983-04-21 1988-02-16 The Weather Channel, Inc. Communications system having an addressable receiver
US4794626A (en) * 1986-03-31 1988-12-27 Kabushiki Kaisha Toshiba Apparatus for reliably fetching data, on the basis of framing code detection process, and method therefor
US5212551A (en) * 1989-10-16 1993-05-18 Conanan Virgilio D Method and apparatus for adaptively superimposing bursts of texts over audio signals and decoder thereof
US5278845A (en) * 1990-06-08 1994-01-11 U.S. Philips Corporation Teletext decoder with error detection and correction
US5301023A (en) * 1991-10-18 1994-04-05 Zenith Electronics Corp. Data slicing system
US5483292A (en) * 1994-03-09 1996-01-09 Samsung Electronics Co., Ltd. Symbol clock regeneration in digital signal receivers for recovering digital data buried in NTSC TV signals
US5506626A (en) * 1994-01-14 1996-04-09 Matsushita Electric Industrial Co., Ltd. Closed-caption decoder circuit having robust synchronization features
US5517249A (en) * 1992-03-11 1996-05-14 Thomson Consumer Electronics, Inc. Auxiliary video data slicer with adaptive slicing level capability
US5530655A (en) * 1989-06-02 1996-06-25 U.S. Philips Corporation Digital sub-band transmission system with transmission of an additional signal
US5543850A (en) * 1995-01-17 1996-08-06 Cirrus Logic, Inc. System and method for displaying closed caption data on a PC monitor
US5555025A (en) * 1995-06-07 1996-09-10 Intel Corporation Apparatus and method for performing asynchronous multi-standard VBI data extraction
US5561469A (en) * 1992-06-01 1996-10-01 Thomson Consumer Electronics, S.A. Auxiliary video data slicer with multi-mode peak detection for determining sync and data slicing levels
US5589886A (en) * 1992-10-08 1996-12-31 Sony Corporation Multistandard decoder for data stored in the vertical blanking interval of a video signal
US5627593A (en) * 1993-12-22 1997-05-06 Deutsche Thomson Brandt Gmbh Method for processing teletext data present in a television signal
US5654763A (en) * 1992-11-24 1997-08-05 Thomson Consumer Electronics Sales Gmbh Method for processing teletext data transmitted in a television signal
US5666548A (en) * 1990-06-12 1997-09-09 Radius Inc. Process of extracting and processing information in a vertical interval of a video signal transmitted over a personal computer bus
US5715011A (en) * 1995-04-22 1998-02-03 U.S. Philips Corporation Transition rate dependent data slicer

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5404172A (en) * 1992-03-02 1995-04-04 Eeg Enterprises, Inc. Video signal data and composite synchronization extraction circuit for on-screen display
US5237290A (en) * 1992-05-08 1993-08-17 At&T Bell Laboratories Method and apparatus for clock recovery
US5543852A (en) * 1994-06-02 1996-08-06 Index Systems, Inc. Apparatus and methods for avoiding loss of closed caption data when using extended data services
US5504751A (en) * 1994-11-07 1996-04-02 Motorola Inc. Method and apparatus for extracting digital information from an asynchronous data stream
JP3393356B2 (en) * 1995-05-26 2003-04-07 ソニー株式会社 Receiving device and receiving method
US5657088A (en) * 1995-12-22 1997-08-12 Cirrus Logic, Inc. System and method for extracting caption teletext information from a video signal
US5835153A (en) * 1995-12-22 1998-11-10 Cirrus Logic, Inc. Software teletext decoder architecture
US5812619A (en) * 1996-02-28 1998-09-22 Advanced Micro Devices, Inc. Digital phase lock loop and system for digital clock recovery
US5926491A (en) * 1996-06-26 1999-07-20 Intel Corporation Noise tolerant run-in clock recovery method and apparatus
US5838382A (en) * 1996-06-26 1998-11-17 Intel Corporation Method and apparatus for optimizing starting point for run-in clock recovery
US5953065A (en) * 1996-06-26 1999-09-14 Intel Corporation Method and apparatus for common vertical blanking interval scan line decoding

Patent Citations (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4380027A (en) * 1980-12-08 1983-04-12 William Leventer Data encoding for television
US4424533A (en) * 1981-07-10 1984-01-03 Matsushita Electric Industrial Co., Ltd. Phase distortion detection circuitry for low cost automatic equalizer
US4434438A (en) * 1981-07-10 1984-02-28 Matsushita Electric Industrial Co., Ltd. Low cost automatic equalizer
US4725886A (en) * 1983-04-21 1988-02-16 The Weather Channel, Inc. Communications system having an addressable receiver
US4673979A (en) * 1984-06-15 1987-06-16 Matsushita Electric Industrial Co., Ltd. Digital data reproducing system
US4719510A (en) * 1985-10-16 1988-01-12 U.S. Philips Corporation Teletext decoders
US4794626A (en) * 1986-03-31 1988-12-27 Kabushiki Kaisha Toshiba Apparatus for reliably fetching data, on the basis of framing code detection process, and method therefor
US5530655A (en) * 1989-06-02 1996-06-25 U.S. Philips Corporation Digital sub-band transmission system with transmission of an additional signal
US5212551A (en) * 1989-10-16 1993-05-18 Conanan Virgilio D Method and apparatus for adaptively superimposing bursts of texts over audio signals and decoder thereof
US5278845A (en) * 1990-06-08 1994-01-11 U.S. Philips Corporation Teletext decoder with error detection and correction
US5666548A (en) * 1990-06-12 1997-09-09 Radius Inc. Process of extracting and processing information in a vertical interval of a video signal transmitted over a personal computer bus
US5301023A (en) * 1991-10-18 1994-04-05 Zenith Electronics Corp. Data slicing system
US5517249A (en) * 1992-03-11 1996-05-14 Thomson Consumer Electronics, Inc. Auxiliary video data slicer with adaptive slicing level capability
US5561469A (en) * 1992-06-01 1996-10-01 Thomson Consumer Electronics, S.A. Auxiliary video data slicer with multi-mode peak detection for determining sync and data slicing levels
US5589886A (en) * 1992-10-08 1996-12-31 Sony Corporation Multistandard decoder for data stored in the vertical blanking interval of a video signal
US5654763A (en) * 1992-11-24 1997-08-05 Thomson Consumer Electronics Sales Gmbh Method for processing teletext data transmitted in a television signal
US5627593A (en) * 1993-12-22 1997-05-06 Deutsche Thomson Brandt Gmbh Method for processing teletext data present in a television signal
US5506626A (en) * 1994-01-14 1996-04-09 Matsushita Electric Industrial Co., Ltd. Closed-caption decoder circuit having robust synchronization features
US5483292A (en) * 1994-03-09 1996-01-09 Samsung Electronics Co., Ltd. Symbol clock regeneration in digital signal receivers for recovering digital data buried in NTSC TV signals
US5543850A (en) * 1995-01-17 1996-08-06 Cirrus Logic, Inc. System and method for displaying closed caption data on a PC monitor
US5715011A (en) * 1995-04-22 1998-02-03 U.S. Philips Corporation Transition rate dependent data slicer
US5555025A (en) * 1995-06-07 1996-09-10 Intel Corporation Apparatus and method for performing asynchronous multi-standard VBI data extraction

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1008261A4 *

Also Published As

Publication number Publication date
WO1998051069A2 (en) 1998-11-12
US6239843B1 (en) 2001-05-29
EP1008261A4 (en) 2002-07-24
EP1008261A2 (en) 2000-06-14
CA2293690A1 (en) 1998-11-12
AU7369698A (en) 1998-11-27
JP2001524292A (en) 2001-11-27

Similar Documents

Publication Publication Date Title
WO1998051069A3 (en) Method and system for decoding data in a signal
TW376651B (en) A digital signal system having a sync confidence counter
CA2152781A1 (en) Digital demodulator with frequency and timing control
CA2226505A1 (en) Apparatus for decoding video signals encoded in different formats
MY116564A (en) A system providing stanby operation of an auxiliary data decoder in a television receiver
WO2000045599A3 (en) Interactive system
MY124752A (en) Decoding of information in audio signals
WO1999038336A3 (en) Multiple vocoder mobile satellite telephone system
BR9915780A (en) Method for receiving a modulated signal, and receiving system for receiving a modulated signal
CA2174890A1 (en) Film mode progressive scan conversion
CA2212658A1 (en) Voice activity detection using echo return loss to adapt the detection threshold
EP1056297A3 (en) Multimedia decoder with error detection
CA2140315A1 (en) Method and device for data capture in television viewers research
WO2002052845A3 (en) System and method for determining whether a video program has been previously recorded
DK418286D0 (en) ROOF CORRECTION FOR A VIDEO SIGNAL PROCESSOR
EP0844758A3 (en) Non-equalized digital receiver using block decoding with erasure and error correction
GB9414447D0 (en) Method and apparatus for accurate setting of time of day clock in a video receiver
CA2276767A1 (en) Hdtv video frame synchronizer that provides clean digital video without variable delay
EP0782348A3 (en) Apparatus and method for processing nonstandard sync signal in video signal processing system
CA2241706A1 (en) Synchronizing a data acquisition device with a host
JP3283092B2 (en) Data decoder
EP0936817A3 (en) Video data decoding method and apparatus
EP0748060A3 (en) Post detection integration spread spectrum receiver
GB2253124A (en) Method and apparatus for recovering data, such as teletext data encoded into television signals
AU3575995A (en) Decoding of a data signal transmitted in a television system

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH GM GW HU ID IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
ENP Entry into the national phase

Ref document number: 2293690

Country of ref document: CA

Ref country code: CA

Ref document number: 2293690

Kind code of ref document: A

Format of ref document f/p: F

ENP Entry into the national phase

Ref country code: JP

Ref document number: 1998 548407

Kind code of ref document: A

Format of ref document f/p: F

WWE Wipo information: entry into national phase

Ref document number: 73696/98

Country of ref document: AU

WWE Wipo information: entry into national phase

Ref document number: 1998920986

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWP Wipo information: published in national office

Ref document number: 1998920986

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1998920986

Country of ref document: EP