HK72797A - Process and device for decoding image signals containing additional information - Google Patents

Process and device for decoding image signals containing additional information

Info

Publication number
HK72797A
HK72797A HK72797A HK72797A HK72797A HK 72797 A HK72797 A HK 72797A HK 72797 A HK72797 A HK 72797A HK 72797 A HK72797 A HK 72797A HK 72797 A HK72797 A HK 72797A
Authority
HK
Hong Kong
Prior art keywords
additional information
image
receiver
recorded
decoding
Prior art date
Application number
HK72797A
Inventor
Martin Plantholt
Original Assignee
Thomson Brandt Gmbh
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 Thomson Brandt Gmbh filed Critical Thomson Brandt Gmbh
Publication of HK72797A publication Critical patent/HK72797A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/007—Systems with supplementary picture signal insertion during a portion of the active part of a television signal, e.g. during top and bottom lines in a HDTV letter-box system
    • 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
    • H04N9/797—Processing of colour television signals in connection with recording for recording the signal in a plurality of channels, the bandwidth of each channel being less than the bandwidth of the signal
    • 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
    • H04N9/83—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 the recorded chrominance signal occupying a frequency band under the frequency band of the recorded brightness signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems
    • H04N11/06—Transmission systems characterised by the manner in which the individual colour picture signal components are combined
    • H04N11/12—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only
    • H04N11/14—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system
    • H04N11/16—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system the chrominance signal alternating in phase, e.g. PAL-system
    • H04N11/167—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system the chrominance signal alternating in phase, e.g. PAL-system a resolution-increasing signal being multiplexed to the PAL-system signal, e.g. PAL-PLUS-system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • 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
    • H04N9/7925—Processing of colour television signals in connection with recording for more than one processing mode for more than one standard

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Color Television Systems (AREA)
  • Facsimiles In General (AREA)
  • Television Signal Processing For Recording (AREA)
  • Processing Of Color Television Signals (AREA)
  • Television Systems (AREA)
  • Management Or Editing Of Information On Record Carriers (AREA)

Abstract

The letterbox process is considered in order to introduce a 16:9 large screen format compatible with existing television standards. The 4:3 receivers represent the 16:9 image information in a compatible manner with black stripes at the top and bottom edges of the image. In order to fill out the screen of a 16:9 receiver, additional information that allows an image with an improved quality to be obtained is transmitted in the black stripes of the compatible 4:3 transmission. In order to record PALplus signals on SVHS recorders, the additional information may be partially decoded. For that purpose, the additional information is demodulated before being recorded and is then recorded as basis band signals. Before being reproduced by a 16:9 receiver, the recorded additional information may go backwards through the decoding process carried out before recording, i.e. may be coded into an image signal containing additional information. In 16:9 television receivers, the additional information is then decoded again. Besides the disadvantage that represents the signal recoding effort in the recorder, the cascade coding/decoding worsens the signal-to-noise ratio in the signal. According to the invention, image signals containing partially decoded additional information recorded on SVHS recorders are directly supplied for further decoding to the 16:9 receiver and are not subjected to the corresponding partial decoding in the 16:9 receiver.
HK72797A 1991-08-27 1997-05-29 Process and device for decoding image signals containing additional information HK72797A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4128337A DE4128337A1 (en) 1991-08-27 1991-08-27 METHOD AND DEVICE FOR DECODING IMAGE SIGNALS WITH ADDITIONAL INFORMATION
PCT/EP1992/001877 WO1993004561A1 (en) 1991-08-27 1992-08-18 Process and device for decoding image signals containing additional information

Publications (1)

Publication Number Publication Date
HK72797A true HK72797A (en) 1997-06-06

Family

ID=6439182

Family Applications (1)

Application Number Title Priority Date Filing Date
HK72797A HK72797A (en) 1991-08-27 1997-05-29 Process and device for decoding image signals containing additional information

Country Status (7)

Country Link
EP (1) EP0600981B1 (en)
JP (1) JPH06510168A (en)
AT (1) ATE150246T1 (en)
DE (2) DE4128337A1 (en)
HK (1) HK72797A (en)
SG (1) SG44711A1 (en)
WO (1) WO1993004561A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0616469A3 (en) * 1993-03-15 1995-02-01 Victor Company Of Japan Television signal processing system.
JPH06276491A (en) * 1993-03-18 1994-09-30 Victor Co Of Japan Ltd Video signal processing circuit
DE4313299A1 (en) * 1993-04-23 1994-10-27 Thomson Brandt Gmbh Process for compatible recording or reproduction of television signals
EP0624042B1 (en) * 1993-05-07 2000-08-09 SONY DEUTSCHLAND GmbH A television signal compatible with a conventional television standard signal, method of transmitting the television signal and equipment for processing the television signal

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL194023C (en) * 1983-05-06 2001-04-03 Philips Electronics Nv Color television transmission or information storage system with time-division multiplex encoding and suitable information transmitter and receiver.
NL192488C (en) * 1983-12-05 1997-08-04 Philips Electronics Nv Information giver and information receiver with transmission of additional information associated with the television frame scanner.
DE3930964A1 (en) * 1989-09-15 1991-03-28 Thomson Brandt Gmbh TELEVISION TRANSMISSION SYSTEM
DE4002588A1 (en) * 1990-01-30 1991-08-01 Thomson Brandt Gmbh LETTERBOX COLOR TV SYSTEM WITH DESERTED ADDITIONAL INFORMATION
EP0524993B1 (en) * 1990-04-18 1996-07-17 Deutsche Thomson-Brandt GmbH Process and device for image signal recording or reproduction
DE4012344A1 (en) * 1990-04-18 1991-10-24 Thomson Brandt Gmbh TV signal recording system coping with letter-box format - uses notch filter adjusted via code mode for additional signals
EP0551314B1 (en) * 1990-10-01 1996-12-11 Deutsche Thomson-Brandt Gmbh Television transmission system and decoder for such

Also Published As

Publication number Publication date
EP0600981B1 (en) 1997-03-12
WO1993004561A1 (en) 1993-03-04
DE4128337A1 (en) 1993-03-04
JPH06510168A (en) 1994-11-10
ATE150246T1 (en) 1997-03-15
DE59208197D1 (en) 1997-04-17
EP0600981A1 (en) 1994-06-15
SG44711A1 (en) 1997-12-19

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)