WO1991012691A3 - Hd-mac television decoder - Google Patents

Hd-mac television decoder Download PDF

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Publication number
WO1991012691A3
WO1991012691A3 PCT/NL1991/000021 NL9100021W WO9112691A3 WO 1991012691 A3 WO1991012691 A3 WO 1991012691A3 NL 9100021 W NL9100021 W NL 9100021W WO 9112691 A3 WO9112691 A3 WO 9112691A3
Authority
WO
WIPO (PCT)
Prior art keywords
mode
decoder
mac television
blocks
television decoder
Prior art date
Application number
PCT/NL1991/000021
Other languages
French (fr)
Other versions
WO1991012691A2 (en
Inventor
Peter Hubertus Frencken
Willem Peter Gerardu Crooymans
Overmeire Philippe Antoine Van
Sandro Giovanni Colombo
Original Assignee
Philips Nv
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 GB909002991A external-priority patent/GB9002991D0/en
Application filed by Philips Nv filed Critical Philips Nv
Publication of WO1991012691A2 publication Critical patent/WO1991012691A2/en
Priority to FI914744A priority Critical patent/FI914744A0/en
Publication of WO1991012691A3 publication Critical patent/WO1991012691A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/015—High-definition television systems
    • H04N7/0152—High-definition television systems using spatial or temporal subsampling
    • H04N7/0155—High-definition television systems using spatial or temporal subsampling using pixel blocks

Abstract

An HD-MAC television decoder comprises a 40 ms decoding branch (16-27), and an 80 ms mode decoding branch (38). For decoding 80 ms mode blocks in principle samples from four successively received 80 ms mode blocks are required. An HD-MAC television decoder can do with only three field memories (FM1-FM3) if at temporal mode changes where a sequence of 80 ms mode blocks is followed or preceded by non-80 ms mode blocks, any missing samples required by the 80 ms mode decoder (38) are taken from the output of the 40 ms mode decoder (16-27) by appropriate switching of switch (30).
PCT/NL1991/000021 1990-02-09 1991-02-08 Hd-mac television decoder WO1991012691A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FI914744A FI914744A0 (en) 1990-02-09 1991-10-08 MAC TELEVISIONSAVKODARE.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB909002991A GB9002991D0 (en) 1990-02-09 1990-02-09 High definition television decoder
GB9002991.9 1990-02-09
GB9007670.4 1990-04-04
GB909007670A GB9007670D0 (en) 1990-02-09 1990-04-04 High definition television decoder

Publications (2)

Publication Number Publication Date
WO1991012691A2 WO1991012691A2 (en) 1991-08-22
WO1991012691A3 true WO1991012691A3 (en) 1991-12-26

Family

ID=26296644

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1991/000021 WO1991012691A2 (en) 1990-02-09 1991-02-08 Hd-mac television decoder

Country Status (5)

Country Link
EP (1) EP0468027A1 (en)
JP (1) JPH05500442A (en)
AU (1) AU7239691A (en)
FI (1) FI914744A0 (en)
WO (1) WO1991012691A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2691600B1 (en) * 1992-05-19 1994-08-19 Philips Electronique Lab Device for correcting the flickering effect of so-called compatible signals.
JP3981651B2 (en) * 1993-03-25 2007-09-26 セイコーエプソン株式会社 Image processing device
EP0626788B1 (en) * 1993-05-26 2000-08-30 STMicroelectronics S.r.l. Video images decoder architecture for implementing a 40 ms processing algorithm in high definition televisions
JPH08510880A (en) * 1993-06-01 1996-11-12 トムソン マルチメディア ソシエテ アノニム Method and apparatus for motion compensated interpolation

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4012628A (en) * 1975-08-15 1977-03-15 Bell Telephone Laboratories, Incorporated Filter with a reduced number of shift register taps
US4694416A (en) * 1985-02-25 1987-09-15 General Electric Company VLSI programmable digital signal processor
EP0322956A1 (en) * 1987-12-22 1989-07-05 Koninklijke Philips Electronics N.V. Video encoding and decoding using an adpative filter
EP0344846A2 (en) * 1988-06-01 1989-12-06 Philips Electronics Uk Limited Processing sub-sampled signals
FR2633135A1 (en) * 1988-06-17 1989-12-22 France Etat Armement Decoder for high-definition receiver of television programmes broadcast on narrow channel
EP0348186A2 (en) * 1988-06-22 1989-12-27 British Broadcasting Corporation Bandwidth reduction system for television

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4012628A (en) * 1975-08-15 1977-03-15 Bell Telephone Laboratories, Incorporated Filter with a reduced number of shift register taps
US4694416A (en) * 1985-02-25 1987-09-15 General Electric Company VLSI programmable digital signal processor
EP0322956A1 (en) * 1987-12-22 1989-07-05 Koninklijke Philips Electronics N.V. Video encoding and decoding using an adpative filter
EP0344846A2 (en) * 1988-06-01 1989-12-06 Philips Electronics Uk Limited Processing sub-sampled signals
FR2633135A1 (en) * 1988-06-17 1989-12-22 France Etat Armement Decoder for high-definition receiver of television programmes broadcast on narrow channel
EP0348186A2 (en) * 1988-06-22 1989-12-27 British Broadcasting Corporation Bandwidth reduction system for television

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Contribution to the Club de Rennes Young Researchers' Seminar, M.I.T., Cambridge, Mass., 9-13 October 1988, F.W.P. Vreeswijk: "HD-MAC coding for broadcasting of high definition television signals", pages 1-20, see page 8, line 15 - page 9, line 28 *
FKT Fernseh- und Kino-Technik, vol. 42, no. 10, October 1988, (Heidelberg, DE), M. Silverberg: "HQTV-Systeme - Ein Vergleich", pages 483,484,497,498,500-502, see page 484, right-hand column, line 6 - page 497, left-hand column, line 11 *
ICASSP 85 Proceedings, IEEE International Conference on Acoustics, Speech, and Signal Processing, Tampa, Florida, 26-29 March 1985, vol. 1, IEEE, A. Aliphas et al.: "High resolution digital filter chip", pages 224-227, see the whole article *

Also Published As

Publication number Publication date
AU7239691A (en) 1991-09-03
FI914744A0 (en) 1991-10-08
JPH05500442A (en) 1993-01-28
EP0468027A1 (en) 1992-01-29
WO1991012691A2 (en) 1991-08-22

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