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Patent EP0424026A2 successfully refreshed from Google Patents.
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EP0424026A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Video signal transmitting system

Assignee: Sony Corp
•
Filing: 1990-10-11
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Granted: —
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Expires: 2010-10-11
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Abstract

Abstract Video signal transmitting system in which digital video signal are divided into groups of predetermined frames. Digital video signals of at least one frame of them are intraframe coded and then transmitted. Remaining digital video signals are interframe coded with reference to the digital video signals, intraframe coded, and the digital video signals, intraframe coded, of a subsequent group of frames and are then transmitted. A motion vector from a predetermined reference frame is detected. Video signals are interframe coded by the motion vector to transmit the video signals. A motion vector from a frame which is frames away from the reference frame is converted to motion vector per one frame between the reference frame and the frame, is optimized, and is then transmitted.

Inventors

  • 👤 Jun Yonemitsu
  • 👤 Yoichi Yagasaki
  • 👤 Katsuji Igarashi
  • 👤 Veltman Mark

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-31 23:32
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/24; H04N7/52; H04N19/00; H04N19/50; H04N19/503; H04N19/51; H04N19/577; H04N19/60; H04N19/61

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 111 words
An apparatus for transmitting a digital video signal, comprising : means for dividing the digital video signal into successive frame groups each having a plurality of frames, first means for processing said plurality of frames of each of said successive frame groups so that at least one of said plurality of frames is to be generated as an intra-frame signal, and second means for processing a remaining of said plurality of frames based on said intra-frame signals of one of said each frame group and one successive frame group so that at least one of said remaining of said plurality of frames is to be generated as an first inter-frame signal.
Claim 2
Independent Claim 111 words
An apparatus for transmitting a digital video signal, comprising : means for dividing the digital video signal into successive frame groups each having a plurality of frames, first means for processing said plurality of frames of each of said successive frame groups so that at least one of said plurality of frames is to be generated as an intra-frame signal, and second means for processing a remaining of said plurality of frames based on said intra-frame signals of one of said each frame group and one successive frame group so that at least one of said remaining of said plurality of frames is to be generated as an first inter-frame signal.
Claim 3
Dependent Claim 78 words
The apparatus according to claim 1, in which said apparatus further comprising, third means for processing further remaining of said plurality of frames except for said intra-frame and first inter-frame based on said intra-frame of said one of said each frame group and said first inter-frame , or said intra-frame of said one successive frame group and said first inter-frame so that said further remaining of said plurality of frames are to be generated as second inter-frames signal.
Claim 4
Dependent Claim 46 words
The apparatus according to claim 2, in which said apparatus further comprising, means for adding an identification data to each of said first and second inter-frame signal so that a reference frame in a process of generating said first and second inter-frame signals can be identified.

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