EP0439471A1 - Systeme de transmission - Google Patents

Systeme de transmission

Info

Publication number
EP0439471A1
EP0439471A1 EP89909739A EP89909739A EP0439471A1 EP 0439471 A1 EP0439471 A1 EP 0439471A1 EP 89909739 A EP89909739 A EP 89909739A EP 89909739 A EP89909739 A EP 89909739A EP 0439471 A1 EP0439471 A1 EP 0439471A1
Authority
EP
European Patent Office
Prior art keywords
image
signal
receiver
receiver according
information
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.)
Pending
Application number
EP89909739A
Other languages
German (de)
English (en)
Inventor
Heinz-Werner Keesen
Hartmut Peters
Dietmar Hepper
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.)
Deutsche Thomson Brandt GmbH
Original Assignee
Deutsche 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
Priority claimed from DE3831103A external-priority patent/DE3831103A1/de
Priority claimed from DE3831104A external-priority patent/DE3831104A1/de
Application filed by Deutsche Thomson Brandt GmbH filed Critical Deutsche Thomson Brandt GmbH
Publication of EP0439471A1 publication Critical patent/EP0439471A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/12—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems
    • H04N11/24—High-definition television systems
    • H04N11/26—High-definition television systems involving two-channel transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/587—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal sub-sampling or interpolation, e.g. decimation or subsequent interpolation of pictures in a video sequence
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/59—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial sub-sampling or interpolation, e.g. alteration of picture size or resolution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/12—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal
    • H04N7/122—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal involving expansion and subsequent compression of a signal segment, e.g. a frame, a line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/12—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal
    • H04N7/127—Systems in which different parts of the picture signal frequency band are individually processed, e.g. suppressed, transposed

Definitions

  • the invention relates to a transmission and reception system for an image signal.
  • HDTV signal a high-resolution television signal
  • standard TV signal a standard television signal
  • an HDTV signal supplied by a source is split up by means of a digital signal processor by means of a two-dimensional local filtering in such a way that as a result a standard TV signal and a signal which supplies the high local frequency components of the HDTV signal, arises.
  • These two signals are transmitted separately via two separate band-limited channels, one channel transmitting the standard TV signal and the second channel acting as an additional channel the high local frequency components of the HDTV signal.
  • the standard TV signal can then be received on the receiver side by means of a standard TV receiver.
  • a suitable HDTV receiver By evaluating the signals of both channels, a suitable HDTV receiver is able to reconstruct and reproduce the image supplied by the source. - Z -
  • the invention is based on the object of specifying a transmission system and a receiver for a high-resolution television signal which, in the case of existing band-limited transmission channels on the receiver side, enables the reconstruction of image information even when only one channel is received.
  • an HDTV signal with high spatial and temporal resolution is split into two signals.
  • the first signal has a low local but high temporal resolution and can be encoded in a standard TV signal, e.g. PAL, Secam, NTSC or D2-MAC or digital with or without data reduction, implemented and transmitted over a first band-limited channel.
  • a standard TV signal e.g. PAL, Secam, NTSC or D2-MAC or digital with or without data reduction
  • the second signal has a high local but low temporal resolution. This can e.g. by omitting images, preferably every other image. With an appropriate coder it can e.g. converted into an HD-MAC signal or also transmitted directly digitally with or without data reduction over a second band-limited channel.
  • a complete temporally low and locally high-resolution image signal can be received via the second channel, from which an adequate locally high-resolution image signal, hereinafter referred to as HD signal, is called by suitable decoding and measures for image regeneration , can be reconstructed.
  • HD signal an adequate locally high-resolution image signal
  • the regeneration measures serve to largely reconstruct the information lost by the receiver by omitting images, particularly in the case of moving sequences.
  • both channels must be evaluated on the receiver side.
  • the temporally high-resolution image information of the first channel is used in particular for movement defects in the reconstruction of the HD image.
  • Information about the corresponding first channel is added to the signal of the second channel.
  • this information can be evaluated by the receiver in such a way that it automatically receives the first channel by means of a corresponding evaluation circuit.
  • the transmission system according to the invention thus advantageously results in the introduction of an HDTV transmission system which is compatible with the conventional transmission systems, the first channel providing an image signal with a resolution corresponding to today's television standard and the second channel providing a complete image signal of high local resolution.
  • Fig. 4 an HD encoder (in the transmitter)
  • Fig. 5 an HD decoder (in the receiver)
  • Fig. 1 shows a 2-channel HDTV transmission system.
  • An HDTV signal generated by a source is transmitted to a first transmission path, consisting of a transcoder 1, a TV encoder 2, a TV decoder 3 and a transcoder 4, and a second transmission path, consisting of an image suppression circuit 5.
  • a transcoder 1 a TV encoder 2
  • a TV decoder 3 a TV decoder 3
  • a transcoder 4 a second transmission path, consisting of an image suppression circuit 5.
  • the transcoder 1 of the first transmission path reduces the horizontal resolution of the image by 2: 1 and the vertical resolution by 3: 2 by appropriate filtering.
  • the HDTV signal present without interlacing is converted into a signal with interlacing, the temporal resolution being retained.
  • the output signal of the transcoder 1 is fed to the TV encoder 2, which generates a standard TV signal, for example in PAL, Secam, NTSC or D2-MAC, and whose output is connected to a first transmission channel. If, however, the output signal of the transcoder is to be stored, for example, on a digital recorder, it is either given directly or via a data reduction device to the first transmission, ie recording, channel. - 5 -
  • the incoming standard TV signal is decoded in the TV decoder 3 in the receiver of the first transmission channel.
  • the standard TV signal can then be reproduced at the output of the TV decoder 3.
  • the HDTV signal which is fed to the second transmission path, is subjected to an omission of images in order to adapt to a band-limited second transmission channel.
  • the image suppression circuit 5 e.g. only transfer every second picture. In the case of signals with static picture content, it is conceivable to suppress more than just every second picture, so that the channel capacity which is then released is available for coding and transmission of the other pictures.
  • the output signal of the image suppression circuit 5 reaches a second transmission channel via the HD encoder 6.
  • the HD encoder either generates an analog signal, e.g. HD-MAC, or a digital signal that is transmitted directly or after data reduction over the channel.
  • the incoming signal is fed to the HD decoder 7 in the receiver of the second transmission channel.
  • the output of the HD decoder 7 is connected to the image regeneration circuit 8, which uses a motion estimation to perform a reconstruction of the images omitted on the receiver side by means of a block comparison.
  • the image regeneration circuit 8 At the output of the image regeneration circuit 8 there is then an HD signal with high local resolution and an image repetition frequency of e.g. 50 Hz reproducible, but with possible errors in the area of moving picture content.
  • the transcoder 4 converts the standard TV signal into an inversion of the sampling rate conversion - 6 -
  • Both signals, that of the transcoder 4 and that of the image regeneration circuit 8, are fed to a combination filter 9 which, by suitable weighting, delivers an HDTV output signal of high temporal and local resolution.
  • Fig. 2 describes the transcoder 1 in the transmitter.
  • the incoming HDTV signal is fed to a horizontal transcoder filter 9 which, by suitable filtering, lowers the horizontal sampling rate by 2: 1.
  • a basic process for this is described in Pirsch, P .; Bierling, M.: “Changing the Sampling Rate of Video Signals by Rational Factors", Proc. EUSIPCO '83, Signal Processing II: Theories and Applications, EURASIP 1983, pp. 171-174.
  • the signal then passes through a vertical transcoder filter 10, which lowers the vertical sampling rate by 3: 2.
  • the output signal then passes through a vertical low-pass filter, followed by an interlacer 11, which performs a field-dependent vertical subsampling of 2: 1 to generate an image signal with an interlace.
  • Fig. 3 shows the transcoder 4 in the receiver.
  • the incoming standard TV signal in the form of digital samples, is fed to a deinterlacer 12 which, by partial image-dependent line transfer and interpolation of the intermediate lines from an image signal in the format 720 * 576, 50 Hz, 2: 1 Image signal in the format 720 * 576, 50 Hz, 1: 1 generated.
  • This signal is fed to a vertical transcoder filter 13 which regenerates a signal in the format 720 * 864, 50 Hz, 1: 1 by vertical sampling rate conversion by 2: 3.
  • a subsequent horizontal transcoder filter 14 with a horizontal sampling rate conversion of 1: 2 produces a signal with a format comparable to the HDTV input signal with 1440 * 864, 50 Hz, 1: 1.
  • the HDTV input signal passing through the image suppression circuit 5 is fed to both a mode selection circuit 23 and a block search circuit 31.
  • either an interframe or an intra-frame mode is selected by comparing the input signal with the output signal of the block search circuit 31 for coding the input signal.
  • the coding happens e.g. uniform for a block containing 8 * 8 pixels. Are e.g. the deviations of the current picture from the previous picture are large, then an intraframecoding is carried out.
  • an interframe coding is used for data reduction.
  • Interframe mode the image signal is predicted along determined motion vectors and the difference signal between the original and prediction signal is forwarded.
  • intraframe mode the input signal is passed on itself.
  • the block search circuit 31 determines a motion vector for each current block.
  • the motion vector can e.g. B. from the minimal sum of the absolute values of the differences, the minimal sum of the alternating energy or minimal variance.
  • the signal is fed to a discrete cosine transformer 24. Its output signal is sorted in a sorter (scanner) 25 and then a weighting circuit 26 and one - tf -
  • Quantizer 27 supplied.
  • the output signal of the quantizer 27 is fed to a coder 28 as well as for the reconstruction of the image signal via a circuit for inverse weighting 36, an inverse scanner 35 and an inverse discrete cosine transformer 34 of a block reconstruction circuit 33, the block reconstruction circuit 33 of which Output is connected to an image memory 32.
  • the encoder 28 receives quantized weighted transformation coefficients as an input signal in a sequence determined by the scanning. For data reduction, it carries out a coding with variable word length and provides coded coefficients and addresses as an output signal. This is fed to a video multiplexer and buffer memory 29.
  • the data stored in the image memory 32 is data from the previous image. They are required in order to determine movement information for a current block.
  • a block of the current image comprising, for example, 8 * 8 pixels, is varied in its position within the 16 * 16 block in a search area of the previous image, comprising, for example, 16 * 16 pixels, with the aid of the so-called block matching, until a position of the current one Block is found in the previous block, in which the smallest deviations are found.
  • a vector is determined from this resulting position and is supplied to the mode selection circuit 23 and a coder 30.
  • This coder 30 likewise carries out coding with variable word length and forwards the coded motion vector for intermediate storage in addition to the corresponding signal data to the video multiplexer and buffer memory 29.
  • the buffer memory 29 is connected to the quantizer 27. - 9 -
  • the result of the mode selection is fed to the video multiplexer and buffer memory 29 and to the block reconstruction circuit 33 for correct block reconstruction.
  • the output signal of the buffer memory 29 is fed to the second transmission channel at a constant data rate.
  • FIG. 5 shows the HD decoder 7 with a buffer memory and video demultiplexer 15.
  • Each output of the buffer memory 15 leads to a decoder 16 or 21.
  • An output of the decoder 16 leads via an inverse weighting 17, an inverse scanner 18 and an inverse discrete cosine transformer 19 to a block reconstruction circuit 20.
  • the output of the block reconstruction circuit 20 leads to the image regeneration circuit 8 and to an image or block memory 22.
  • the output of the decoder 21 with the decoded motion vectors also leads to a further input of the Image or block memory 22.
  • the addresses and coefficients are decoded back into their original form.
  • the decoder 21 does the same for the motion vectors.
  • An information line 54 leads from the buffer memory 15 to the block reconstruction circuit 20 with the information as to whether the block was encoded in the interframe or in the intraframe mode.
  • Another line 56 leads from the buffer memory 15 to the decoder 16, which transmit buffer status and information about the quantizer status.
  • the output signal of the HD decoder 7 is fed to an image memory 38.
  • An output of the image memory 38 leads to an image interpolation circuit 37, a further output to an image memory 39 and a multiplexer 40.
  • Further inputs of the image interpolation circuit 37 carry further data from the HD decoder 7, e.g. the motion vectors 53 and the code mode information 54, that is information about interframe or intraframe coding.
  • An output of the image interpolation circuit 37 leads to the multiplexer 40.
  • An HD signal with 1440 * 864 pixels, 50 Hz, 1: 1 can be tapped at the output of the multiplexer 40, hereinafter referred to as HDTV-TV signal.
  • FIG. 7 The functioning of the image regenerator 8, FIG. 6 is illustrated in FIG. 7 using a one-dimensional example.
  • Each image 2n + 1 output by the HD decoder is stored in the image memory 38 of the image regenerator, and the image 2n-1 previously transmitted is held in the image memory 39.
  • the image 2n in between was omitted from the image suppression circuit 5 on the transmission side.
  • Figure 7 shows the signals at the image interpolation circuit 37.
  • One input carries the output signal 46 of the image memory 39 with the image information 49 and 50.
  • the second input carries the output signal 48 of the image memory 38.
  • the output signal 47 with the image information 51 is the Multiplexer 40 supplied.
  • block 51 of intermediate image 2n is determined directly from image 2n-1 and image 2n + 1 on a block basis by point-by-point averaging of the image contents. This is not shown in Fig. 7.
  • the motion vector 53 of the block 52 is known from the HD decoder.
  • the one around ⁇ A the one around ⁇ A
  • the image 2n can be generated by pixel-by-pixel interpolation of the images 2n-1 and 2n + 1 shifted in the opposite direction by half the motion vector.
  • the temporally high-resolution, locally interpolated and thus corresponding to the format of the HDTV picture generated by the transcoder 4 TV picture is fed to a summer 41.
  • the output signal of the image regeneration circuit 8 is also fed to the summer 41.
  • the summer 41 determines the sum of the absolute gray value differences of the two differently regenerated image signals via a point by point over an n * n window. The sum forms a value Z per window size n * n.
  • the weighting factor a can assume a value between 0 and 1.
  • the factor a 1 and thus the image information of the TV signal is adopted. If, on the other hand, the value Z is very small, ie if there is static image content, for example, the data are taken from the HD signal, since this represents the original, locally high resolution from the source to the sink. - -12 , -
  • the multiplication results of the multipliers are fed to a summer 45, the output signal of which corresponds to the original HDTV signal.
  • the image regeneration process is carried out by evaluating both channels on the receiver side.
  • the images generated by the above image regeneration methods are combined as follows.
  • the differences between the temporally high-resolution, locally interpolated HDTV-TV signal generated by transcoding, which corresponds in format to the HDTV picture, and the HDTV-HD picture generated by picture interpolation are calculated point by point.
  • the sum of the absolute gray value differences of the two differently regenerated image signals are determined and weighted point by point via an n * n window.
  • a factor a in the range from 0 to 1 is determined by the weighting.
  • the HDTV-TV and HDTV-HD image signals are linked with the weighting factor a as follows:
  • the HDTV-TV signal is multiplied by the factor a, the HDTV-HD signal by the factor 1-a.
  • the factor a 1 and thus the image information of the HDTV-TV signal is adopted.
  • the value is very small, e.g. static image content, the data are taken from the HDTV-HD signal, since this represents the original high local resolution from the source to the sink.
  • the weighting factor a is set to 1 if the weighted sum of the absolute gray values unites - 13 -
  • Exceed threshold that is less than 1. Up to this threshold value, the value of the weighting factor increases proportionally from 0 to 1.
  • the weighted addition of the two channels can be determined by evaluated HD decoder information, i.e. Improve information about the transmission mode, the quantization status or the movement of the block.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Systems (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Vehicle Body Suspensions (AREA)
  • Color Television Systems (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

Dans un système de transmission de signaux de télévision de haute résolution temporelle et spatiale, ces signaux sont subdivisés en deux composantes, étant donné la bande limitée des canaux de transmission, et ces composantes sont transmises par deux canaux séparés. La première composante constitue un signal standard de télévision et la deuxième composante constitue un signal de télévision de haute résolution spatiale. Comme deuxième composante on transmet un signal ayant la même haute résolution spatiale que le signal d'entrée, alors que sa résolution temporelle est réduite. On obtient ainsi un système de transmission compatible de signaux de télévision de haute définition.
EP89909739A 1988-09-13 1989-09-05 Systeme de transmission Pending EP0439471A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3831104 1988-09-13
DE3831103A DE3831103A1 (de) 1988-09-13 1988-09-13 Uebertragungssystem
DE3831104A DE3831104A1 (de) 1988-09-13 1988-09-13 Bildregenerationsverfahren
DE3831103 1988-09-13

Publications (1)

Publication Number Publication Date
EP0439471A1 true EP0439471A1 (fr) 1991-08-07

Family

ID=25872158

Family Applications (2)

Application Number Title Priority Date Filing Date
EP89116351A Expired - Lifetime EP0359094B1 (fr) 1988-09-13 1989-09-05 Système de transmission pour un signal d'image à haute résolution temporelle et spatiale
EP89909739A Pending EP0439471A1 (fr) 1988-09-13 1989-09-05 Systeme de transmission

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP89116351A Expired - Lifetime EP0359094B1 (fr) 1988-09-13 1989-09-05 Système de transmission pour un signal d'image à haute résolution temporelle et spatiale

Country Status (12)

Country Link
US (1) US5055927A (fr)
EP (2) EP0359094B1 (fr)
KR (1) KR900702718A (fr)
CN (1) CN1027483C (fr)
AT (1) ATE83595T1 (fr)
AU (1) AU4191389A (fr)
CA (1) CA1325055C (fr)
DE (1) DE58903019D1 (fr)
ES (1) ES2037358T3 (fr)
HK (1) HK78594A (fr)
SG (2) SG36672G (fr)
WO (1) WO1990003082A1 (fr)

Families Citing this family (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6563875B2 (en) * 1987-12-30 2003-05-13 Thomson Licensing S.A. Adaptive method of encoding and decoding a series of pictures by transformation, and devices for implementing this method
IT1230235B (it) * 1989-06-07 1991-10-18 Telettra Spa Strutturazione e trasmissione a pacchetti dell'informazione generata da codificatore per segnali video.
ATE135154T1 (de) * 1989-11-14 1996-03-15 Thomson Brandt Gmbh Übertragungssystem
FR2660139B1 (fr) * 1990-03-23 1995-08-25 France Etat Procede de codage et de transmission a au moins deux niveaux de qualite d'images numeriques appartenant a une sequence d'images, et dispositifs correspondants.
DE4029189A1 (de) * 1990-09-14 1992-03-19 Rundfunkschutzrechte Ev Verfahren zur bandaufspaltung eines mit einer grundabtastfrequenz abgetasteten signals in einem sender und zur zusammenfuehrung in einem empfaenger
US5528299A (en) * 1990-10-09 1996-06-18 U.S. Philips Corporation Coding system for digital signals corresponding to television pictures and corresponding decoding system
US5367334A (en) * 1991-05-20 1994-11-22 Matsushita Electric Industrial Co., Ltd. Video signal encoding and decoding apparatus
NL9101080A (nl) * 1991-06-24 1993-01-18 Koninkl Philips Electronics Nv Inrichting voor het splitsen van een digitaal geinterlinieerd televisie signaal in componenten.
US5144425A (en) * 1991-08-26 1992-09-01 General Electric Company Apparatus for hierarchically dividing video signals
US5231384A (en) * 1991-08-26 1993-07-27 General Electric Company Apparatus for splitting video signal between two channels
GB2259421B (en) * 1991-09-04 1995-01-18 Sony Broadcast & Communication Image data recording and transmission
KR100283343B1 (ko) * 1992-06-25 2001-03-02 이데이 노부유끼 화상신호 부호화방법 및 복호화방법과 화상신호 부호화장치 및 복호화장치
US5231486A (en) * 1992-07-27 1993-07-27 General Electric Company Data separation processing in a dual channel digital high definition television system
GB9219185D0 (en) * 1992-09-10 1992-10-28 Thomson Consumer Electronics A single digital modem encoder to generate a twin qam signal for advanced digital television (adtv)
US5477397A (en) * 1993-02-23 1995-12-19 Matsushita Electric Corporation Of America Digital high definition television receiver with features that facilitate trick-play modes on a digital VCR
CA2115976C (fr) * 1993-02-23 2002-08-06 Saiprasad V. Naimpally Magnetoscope de television haute definition numerique a fonctions speciales
US5410355A (en) * 1993-04-02 1995-04-25 Rca Thomson Licensing Corporation Video signal processor including input codeword buffer for providing stored codewords to codeword priority analysis circuit
US5412426A (en) * 1993-04-16 1995-05-02 Harris Corporation Multiplexing of digitally encoded NTSC and HDTV signals over single microwave communication link from television studio to tower transmitter facility for simultaneous broadcast (simulcast) to customer sites by transmitter facility
JP2979900B2 (ja) * 1993-05-26 1999-11-15 日本ビクター株式会社 記録媒体
US5408270A (en) * 1993-06-24 1995-04-18 Massachusetts Institute Of Technology Advanced television system
CA2126467A1 (fr) * 1993-07-13 1995-01-14 Barin Geoffry Haskell Codage et decodage variables pour systeme video haute definition progressif
BE1007330A3 (nl) * 1993-07-16 1995-05-16 Philips Electronics Nv Inrichting voor het overdragen van een digitaal beeldsignaal.
JP3372611B2 (ja) * 1993-10-18 2003-02-04 キヤノン株式会社 映像伝送システム、映像処理装置及び映像処理方法
US6870886B2 (en) * 1993-12-15 2005-03-22 Koninklijke Philips Electronics N.V. Method and apparatus for transcoding a digitally compressed high definition television bitstream to a standard definition television bitstream
US6243139B1 (en) * 1993-12-22 2001-06-05 Canon Kabushiki Kaisha Apparatus for block-encoding input image signals
JP3332580B2 (ja) * 1994-06-14 2002-10-07 キヤノン株式会社 画像再生装置及び画像再生方式
US5572248A (en) * 1994-09-19 1996-11-05 Teleport Corporation Teleconferencing method and system for providing face-to-face, non-animated teleconference environment
US5771073A (en) * 1995-06-07 1998-06-23 Massachusetts Institute Of Technology Advanced television system using a different encoding technique for non-image areas
JP2001522174A (ja) * 1997-10-28 2001-11-13 シーメンス アクチエンゲゼルシヤフト デジタル画像の処理方法および処理装置
EP1247401B1 (fr) * 1999-12-30 2003-07-02 Swisscom Mobile AG Procede de transmission de donnees-image
GB0002481D0 (en) * 2000-02-04 2000-03-22 Eastman Kodak Co Method of image processing
US6680752B1 (en) * 2000-03-31 2004-01-20 Ati International Srl Method and apparatus for deinterlacing video
EP1316206A1 (fr) * 2000-06-15 2003-06-04 Koninklijke Philips Electronics N.V. Filtrage du bruit dans une suite d'images
GB2400254A (en) * 2003-03-31 2004-10-06 Sony Uk Ltd Video processing
US20060245737A1 (en) * 2005-04-29 2006-11-02 Walker Philip M Combining different content discs for playback of supplemental content
US20060271990A1 (en) * 2005-05-18 2006-11-30 Rodriguez Arturo A Higher picture rate HD encoding and transmission with legacy HD backward compatibility
US8457214B2 (en) 2007-09-10 2013-06-04 Cisco Technology, Inc. Video compositing of an arbitrary number of source streams using flexible macroblock ordering
US8964117B2 (en) 2007-09-28 2015-02-24 Ati Technologies Ulc Single-pass motion adaptive deinterlacer and method therefore
US8300987B2 (en) * 2007-09-28 2012-10-30 Ati Technologies Ulc Apparatus and method for generating a detail-enhanced upscaled image
US8259228B2 (en) * 2007-12-10 2012-09-04 Ati Technologies Ulc Method and apparatus for high quality video motion adaptive edge-directional deinterlacing
US8396129B2 (en) * 2007-12-28 2013-03-12 Ati Technologies Ulc Apparatus and method for single-pass, gradient-based motion compensated image rate conversion
US10567703B2 (en) 2017-06-05 2020-02-18 Cisco Technology, Inc. High frame rate video compatible with existing receivers and amenable to video decoder implementation
US10572976B2 (en) * 2017-10-18 2020-02-25 International Business Machines Corporation Enhancing observation resolution using continuous learning

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2920303C2 (de) * 1979-05-19 1984-02-16 Robert Bosch Gmbh, 7000 Stuttgart Vorrichtung zum Übertragen von Videosignalen
US4383272A (en) * 1981-04-13 1983-05-10 Bell Telephone Laboratories, Incorporated Video signal interpolation using motion estimation
JPS58197983A (ja) * 1982-05-14 1983-11-17 Nec Corp 動き補償フレ−ム間復号化装置
US4628344A (en) * 1982-09-14 1986-12-09 New York Institute Of Technoloy Method and apparatus for encoding and decoding video
GB2132444A (en) * 1982-12-22 1984-07-04 Phillips Electronic And Associ Television transmission system
GB2132846A (en) * 1982-12-22 1984-07-11 Philips Electronic Associated Television transmission system
NL8301071A (nl) * 1983-03-28 1984-10-16 Philips Nv Televisiestelsel met een lijnenaantalconversie en daartoe geschikte informatiegever en -ontvanger.
JPH0644815B2 (ja) * 1984-04-27 1994-06-08 日本電気株式会社 動物体の動き内挿装置
DE3682068D1 (de) * 1986-03-19 1991-11-21 British Broadcasting Corp Fernsehbild-bewegungsmessung.
DE3704777C1 (de) * 1987-02-16 1988-04-07 Ant Nachrichtentech Verfahren zum UEbertragen und zum Wiedergeben von Fernsehbildsequenzen
IT1215909B (it) * 1988-02-18 1990-02-22 Rai Radiotelevisione Italiana Procedimento di generazione e trasmissione di segnali televisivi a colori ad alta definizione compatibile con gli standardattuali e procedimento e apparecchiatura di ricezione didetti segnali.
US4907069A (en) * 1988-06-01 1990-03-06 Zenith Electronics Corporation Two-channel compatible HDTV system
US4989089A (en) * 1988-11-08 1991-01-29 U.S. Philips Corporation Television picture coding device and corresponding decoding device, a television picture transmission system incorporating such devices, and transmission and receiving stages of such a system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9003082A1 *

Also Published As

Publication number Publication date
EP0359094A1 (fr) 1990-03-21
KR900702718A (ko) 1990-12-08
CA1325055C (fr) 1993-12-07
EP0359094B1 (fr) 1992-12-16
CN1041254A (zh) 1990-04-11
SG36672G (en) 1995-09-18
SG66493G (en) 1993-08-06
US5055927A (en) 1991-10-08
CN1027483C (zh) 1995-01-18
HK78594A (en) 1994-08-12
ATE83595T1 (de) 1993-01-15
DE58903019D1 (de) 1993-01-28
WO1990003082A1 (fr) 1990-03-22
ES2037358T3 (es) 1993-06-16
AU4191389A (en) 1990-04-02

Similar Documents

Publication Publication Date Title
EP0359094B1 (fr) Système de transmission pour un signal d'image à haute résolution temporelle et spatiale
DE69323586T2 (de) Gerät zur Schichtkodierung/-dekodierung für ein progressives Eingangsbildsignal
DE69120139T2 (de) Gerät und Verfahren zur adaptiven Kompression von aufeinanderfolgenden Blöcken eines digitalen Videosignals
DE69130329T2 (de) System und verfahren zur codierung eines zeilensprunghalbbildes
DE69131438T2 (de) Adaptive Bewegungskompensation für das digitale Fernsehen
DE69233505T2 (de) Videokodierungssystem
DE69232063T2 (de) Adaptive Bewegungskompensation mit mehreren Bewegungskompensatoren
DE69323541T2 (de) Verfahren und System zum Kodieren und/oder Dekodieren der Farbartsignale eines Bildsignals
DE69118654T2 (de) Progressives Signalkodierungssystem für bewegte Bilder
DE69423798T2 (de) Vorrichtungungen und Verfahren zur skalierbaren Kodierung und Dekodierung von Videosignalen
DE69535228T2 (de) Bildumsetzungsvorrichtung
DE69323123T2 (de) Kodierung und Dekodierung von Bildsignalen
DE69422564T2 (de) Verfahren zur halbpixel Bewegungskompensation in Bilddekodierung
DE68917742T2 (de) Dekodiervorrichtung.
DE3788687T2 (de) Codiersystem zum Übertragen von Daten.
DE69417480T2 (de) Bestimmung von Bewegungsvektoren in einem Videokodierer mit Bilddezimation
DE60214837T2 (de) Erkennung und genaue skalierung bewegter bereiche mit zeilensprung in mpeg-2 komprimiertem video
DE69624669T2 (de) Videokodierer und -dekodierersystem und -methoden
DE69415158T2 (de) Verfahren und vorrichtung zur skalierbaren bildsignalkomprimierung
DE69510753T2 (de) Vorrichtung zum Interpolieren von Abtastzeilen und Bewegungsvektordetektor
DE68918893T2 (de) Verfahren und Installation zur Sendung von kompatiblen Hochauflösungsfernsehprogrammen.
AU616971B2 (en) Device for decoding signals representative of a sequence of images and high definition television image transmission system including such a device
DE19717608B4 (de) Wahrnehmungsfehlerbearbeitungsverfahren und Bildkodierungsvorrichtung, welche dieses Verfahren verwendet
DE69229255T2 (de) Kodierungs- und Dekodierungseinrichtung für ein Videosignal
DE69322816T2 (de) Vorrichtung zur Kodierung von digitalen Bildsignalen mit Bewegungskompensation

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 19910529

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

XX Miscellaneous (additional remarks)

Free format text: VERFAHREN ABGESCHLOSSEN INFOLGE VERBINDUNG MIT 89116351.1/0359094 (EUROPAEISCHE ANMELDENUMMER/VEROEFFENTLICHUNGSNUMMER) VOM 14.08.91.