WO1999012332A3 - Method of and apparatus for recording digital television signals - Google Patents

Method of and apparatus for recording digital television signals Download PDF

Info

Publication number
WO1999012332A3
WO1999012332A3 PCT/IB1998/001280 IB9801280W WO9912332A3 WO 1999012332 A3 WO1999012332 A3 WO 1999012332A3 IB 9801280 W IB9801280 W IB 9801280W WO 9912332 A3 WO9912332 A3 WO 9912332A3
Authority
WO
WIPO (PCT)
Prior art keywords
digital television
buffer ram
digital
television signals
recorded
Prior art date
Application number
PCT/IB1998/001280
Other languages
French (fr)
Other versions
WO1999012332A2 (en
Inventor
John Ritchie Kinghorn
Bruce Murray
Original Assignee
Koninkl Philips Electronics Nv
Philips Svenska Ab
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 Koninkl Philips Electronics Nv, Philips Svenska Ab filed Critical Koninkl Philips Electronics Nv
Priority to JP51649399A priority Critical patent/JP2001505392A/en
Priority to EP98936626A priority patent/EP0935873A2/en
Publication of WO1999012332A2 publication Critical patent/WO1999012332A2/en
Publication of WO1999012332A3 publication Critical patent/WO1999012332A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/7921—Processing of colour television signals in connection with recording for more than one processing mode
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
    • H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
    • H04N9/8227—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal the additional signal being at least another television signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

A video recorder comprises an input (14) for receiving a digital television signal which is fed via an interface circuit (15) to a buffer RAM and error correction circuit (16). A control and timing circuit (13) passes this signal from the buffer RAM (16) to a tape encoder (17) which converts the code n-bits at a time into a 2' level code thus reducing the data rate by I/n. This reduces the data rate to one which can be recorded by a VHS recorder. On replay the inverse operation is carried out using the tape decoder (19), buffer RAM and error correction circuit (16) and output interface (20) to provide a replayed digital television signal at an output (21). A further embodiment includes a digital video encoder/decoder to enable analogue television signals to be recorded in digital form.
PCT/IB1998/001280 1997-08-30 1998-08-19 Method of and apparatus for recording digital television signals WO1999012332A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP51649399A JP2001505392A (en) 1997-08-30 1998-08-19 Method and apparatus for recording digital television signals
EP98936626A EP0935873A2 (en) 1997-08-30 1998-08-19 Simultaneous magnetic tape recording of plural digital television signals

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9718326.3A GB9718326D0 (en) 1997-08-30 1997-08-30 Method of and apparatus for recording digital television signals
GB9718326.3 1997-08-30

Publications (2)

Publication Number Publication Date
WO1999012332A2 WO1999012332A2 (en) 1999-03-11
WO1999012332A3 true WO1999012332A3 (en) 1999-05-27

Family

ID=10818223

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1998/001280 WO1999012332A2 (en) 1997-08-30 1998-08-19 Method of and apparatus for recording digital television signals

Country Status (6)

Country Link
EP (1) EP0935873A2 (en)
JP (1) JP2001505392A (en)
KR (1) KR20000068855A (en)
GB (1) GB9718326D0 (en)
TW (1) TW401695B (en)
WO (1) WO1999012332A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001023294A (en) 1999-07-12 2001-01-26 Hitachi Ltd Digital signal recording device and reproducing device
EP1115256A1 (en) * 2000-01-07 2001-07-11 THOMSON multimedia Digital video recorder with several video sources and multiplexer for such a digital video recorder
KR100718565B1 (en) * 2000-01-07 2007-05-16 톰슨 멀티미디어 Digital video recorder with several video sources and multiplexer for such a digital video recorder
KR100470398B1 (en) * 2004-02-07 2005-02-05 가온미디어 주식회사 Digital Convergent Recorder Device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3227373C1 (en) * 1982-07-22 1983-07-07 Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig & Co KG, 8510 Fürth Method of storing digitised signals and circuit arrangement for carrying out the method
DE3441152A1 (en) * 1984-11-10 1986-05-28 Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co KG, 8510 Fürth METHOD FOR MAGNETICALLY RECORDING AND PLAYING BACK TELECOMMUNICATION SIGNALS, IN PARTICULAR VIDEO TEXT AND / OR CABLE TEXT SIGNALS
EP0601963A2 (en) * 1992-12-10 1994-06-15 GOLDSTAR CO. Ltd. System for recording/reproducing both digital and analog signals
EP0797354A1 (en) * 1996-03-18 1997-09-24 Koninklijke Philips Electronics N.V. Recording and/or replaying teletext signals

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3227373C1 (en) * 1982-07-22 1983-07-07 Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig & Co KG, 8510 Fürth Method of storing digitised signals and circuit arrangement for carrying out the method
DE3441152A1 (en) * 1984-11-10 1986-05-28 Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co KG, 8510 Fürth METHOD FOR MAGNETICALLY RECORDING AND PLAYING BACK TELECOMMUNICATION SIGNALS, IN PARTICULAR VIDEO TEXT AND / OR CABLE TEXT SIGNALS
EP0601963A2 (en) * 1992-12-10 1994-06-15 GOLDSTAR CO. Ltd. System for recording/reproducing both digital and analog signals
EP0797354A1 (en) * 1996-03-18 1997-09-24 Koninklijke Philips Electronics N.V. Recording and/or replaying teletext signals

Also Published As

Publication number Publication date
JP2001505392A (en) 2001-04-17
EP0935873A2 (en) 1999-08-18
GB9718326D0 (en) 1997-11-05
WO1999012332A2 (en) 1999-03-11
TW401695B (en) 2000-08-11
KR20000068855A (en) 2000-11-25

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