GB1525915A - Standards converter for television signals - Google Patents

Standards converter for television signals

Info

Publication number
GB1525915A
GB1525915A GB1688077A GB1688077A GB1525915A GB 1525915 A GB1525915 A GB 1525915A GB 1688077 A GB1688077 A GB 1688077A GB 1688077 A GB1688077 A GB 1688077A GB 1525915 A GB1525915 A GB 1525915A
Authority
GB
United Kingdom
Prior art keywords
movement
field
detected
interpolator
interpolation
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.)
Expired
Application number
GB1688077A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1525915A publication Critical patent/GB1525915A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • H04N7/0135—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving interpolation processes
    • H04N7/0137—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving interpolation processes dependent on presence/absence of motion, e.g. of motion zones

Landscapes

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

Abstract

1525915 Television standards converters ROBERT BOSCH GmbH 22 April 1977 [23 April 1976] 16880/77 Heading H4F The manner of operation of an interpolator in a television standards converter is altered according to the presence or absence of movement in the picture content. The converter disclosed includes line and field interpolators 10, 11 connected in series. The line interpolator is fed by odd and even field stores 3, 4. Movement is detected by a unit 5 which compares the present and preceding fields of the video signal to be converted. The movement unit feeds to a store 8 or 9 signals indicative of the elementary areas, or of the region of the field, where movement has occurred or signals indicative merely that movement has occurred. These signals control the interpolators so that, in the case of the line interpolator for example, interpolation using adjacent lines in the same field is performed if no movement has been detected, or using adjacent lines of successive fields if movement has been detected. The form of interpolation may vary from field to field or within a single field, and there may be cross-fading from one form to the other according to the degree of movement.
GB1688077A 1976-04-23 1977-04-22 Standards converter for television signals Expired GB1525915A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762617884 DE2617884C2 (en) 1976-04-23 1976-04-23 Standard converter for television signals

Publications (1)

Publication Number Publication Date
GB1525915A true GB1525915A (en) 1978-09-27

Family

ID=5976080

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1688077A Expired GB1525915A (en) 1976-04-23 1977-04-22 Standards converter for television signals

Country Status (2)

Country Link
DE (1) DE2617884C2 (en)
GB (1) GB1525915A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4276565A (en) 1978-01-18 1981-06-30 British Broadcasting Corporation Method and apparatus for standards conversion of television signals
GB2162018A (en) * 1984-07-17 1986-01-22 Kokusai Denshin Denwa Co Ltd Moving picture frame rate conversion system
EP0187641A1 (en) * 1985-01-07 1986-07-16 Nippon Hoso Kyokai TV system conversion apparatus
GB2175770A (en) * 1985-05-29 1986-12-03 Rca Corp Progressive scan processor
USRE32358E (en) * 1981-09-08 1987-02-17 Rca Corporation Television display system with reduced line-scan artifacts
US4661862A (en) * 1984-04-27 1987-04-28 Rca Corporation Differential PCM video transmission system employing horizontally offset five pixel groups and delta signals having plural non-linear encoding functions
EP0280932A1 (en) * 1987-03-04 1988-09-07 Hitachi, Ltd. Video system for displaying lower resolution video signals on higher resolution video monitors
GB2223141A (en) * 1988-09-21 1990-03-28 Sony Corp Slow motion video signal generator with motion compensated interpolation

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7706512A (en) * 1977-06-14 1978-12-18 Philips Nv LINE CONVERSION SWITCH.
US4272787A (en) * 1978-09-07 1981-06-09 Micro Consultants Limited T.V. Picture freeze system
US4271431A (en) * 1978-10-11 1981-06-02 Star Systems, Inc. Scan converter utilizing discrete differentially coded signals
GB2044580B (en) * 1979-02-27 1983-03-23 Micro Consultants Ltd Distributed store and processor with movement tag system
NL8100603A (en) * 1981-02-09 1982-09-01 Philips Nv GRID FREQUENCY DOUBLE CIRCUIT FOR A TELEVISION SIGNAL.
JPS57171884A (en) * 1981-03-12 1982-10-22 Victor Co Of Japan Ltd Conversion system for number of scanning lines
NL8402707A (en) * 1984-09-05 1986-04-01 Philips Nv GRID FREQUENCY DOUBLE CIRCUIT.
JPH0659092B2 (en) * 1985-04-15 1994-08-03 ソニー株式会社 Frame synchronizer
DE3803835A1 (en) * 1988-02-09 1989-08-17 Thomson Brandt Gmbh TRANSCODER
JPH0216881A (en) * 1988-07-05 1990-01-19 Sony Corp Superimposing device
DE3918007A1 (en) * 1989-06-02 1990-12-06 Grundig Emv CIRCUIT ARRANGEMENT FOR THE STANDARD CONVERSION OF VIDEO SIGNALS FOR THE DISPLAY ON A PLAYBACK DEVICE WITH A MATRIX-SHAPED DISPLAY DEVICE
DE3925046C1 (en) * 1989-07-28 1991-01-03 Institut Fuer Rundfunktechnik Gmbh, 8000 Muenchen, De 60-50 Hz video signal conversion method - choosing unselected frame from remaining sequence of three frames by scanning second full picture

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE31460E (en) 1978-01-18 1983-12-06 British Broadcast Corporation Method and apparatus for standards conversion of television signals
US4276565A (en) 1978-01-18 1981-06-30 British Broadcasting Corporation Method and apparatus for standards conversion of television signals
USRE32358E (en) * 1981-09-08 1987-02-17 Rca Corporation Television display system with reduced line-scan artifacts
US4661862A (en) * 1984-04-27 1987-04-28 Rca Corporation Differential PCM video transmission system employing horizontally offset five pixel groups and delta signals having plural non-linear encoding functions
GB2162018A (en) * 1984-07-17 1986-01-22 Kokusai Denshin Denwa Co Ltd Moving picture frame rate conversion system
EP0187641A1 (en) * 1985-01-07 1986-07-16 Nippon Hoso Kyokai TV system conversion apparatus
US4663665A (en) * 1985-01-07 1987-05-05 Nippon Hoso Kyokai TV system conversion apparatus
GB2175770A (en) * 1985-05-29 1986-12-03 Rca Corp Progressive scan processor
US4672445A (en) * 1985-05-29 1987-06-09 Rca Corporation Progressive scan processor employing interpolation in luminance channel controlled by a motion signal and a vertical detail representative signal
EP0280932A1 (en) * 1987-03-04 1988-09-07 Hitachi, Ltd. Video system for displaying lower resolution video signals on higher resolution video monitors
US4866520A (en) * 1987-03-04 1989-09-12 Hitachi, Ltd. Video system for displaying lower resolution video signals on higher resolution video monitors
GB2223141A (en) * 1988-09-21 1990-03-28 Sony Corp Slow motion video signal generator with motion compensated interpolation
GB2223144A (en) * 1988-09-21 1990-03-28 Sony Corp Slow motion video signal generator with motion-compensated interpolation
US4987489A (en) * 1988-09-21 1991-01-22 Sony Corporation Apparatus for generating an interlaced slow motion video output signal by spatial and temporal interpolation
GB2223144B (en) * 1988-09-21 1992-09-09 Sony Corp Slow motion video signal generation

Also Published As

Publication number Publication date
DE2617884C2 (en) 1985-03-21
DE2617884A1 (en) 1977-11-03

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930422