[특허]Video coding/decoding apparatus which codes information indicating whether an intraframe or interframe predictive codin

[미국특허] Video coding/decoding apparatus which codes information indicating whether an intraframe or interframe predictive codin 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04N-007/32
출원번호	US-0916006 (1997-08-21)
우선권정보	JP-0280443 (1995-10-27)
발명자 / 주소	Kikuchi Yoshihiro,JPX Watanabe Toshiaki,JPX Dachiku Kenshi,JPX Ida Takashi,JPX Yamaguchi Noboru,JPX Chujoh Takeshi,JPX
출원인 / 주소	Kabushiki Kaisha Toshiba, JPX
대리인 / 주소	Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
인용정보	피인용 횟수 : 38 인용 특허 : 10

초록 ▼

A video coding/decoding apparatus comprises a prediction circuit that divides an input video signal into large regions and small regions in a hierarchical fashion and produces a prediction signal by performing prediction region by region, a subtracter for generating a prediction error signal for a prediction signal at the lowest level, a DCT circuit for coding a prediction error signal, a quantization circuit and a variable-length encoder, a variable-length encoder for coding the prediction mode and motion vector information obtained at each level from the prediction circuit, and a multiplexer for multiplexing the code strings obtained from the variable-length encoder and dividing them into the upper-layer and lower-layer code strings to output the code strings obtained at the variable-length encoder particularly as upper-layer code strings.

대표청구항 ▼

[ What is claimed is:] [1.] A video coding apparatus, comprising:prediction signal generating means for selecting one of an intraframe predictive coding method and an interframe predictive coding method for coding an input video signal divided into a plurality of regions, to selectively generate an intraframe prediction signal with the intraframe predictive coding method and a set of an interframe prediction signal and a motion vector with the interframe predictive coding method;first coding means for coding coding mode information for each of the regions to indicate one of the intraframe and interframe predictive coding methods and to obtain plural coded coding mode information, and for coding the motion vector obtained for each of the regions by said prediction signal generating means in the interframe predictive coding method to obtain plural coded motion vectors;prediction error generating means for generating a prediction error signal for each of the regions based on one of the intraframe prediction signal and the interframe predictive signal generated by the prediction signal generating means and the input video signal;second coding means for coding the prediction error signal for each of the regions to obtain plural coded prediction error information; andcode string generating means for outputting a code string including a synchronization code, a group of the plural coding mode information, a group of the coded motion vectors and a group of the plural coded prediction error information, which are all arranged in this order corresponding to a descending order of importance in decoding.

이 특허에 인용된 특허 (10) 인용/피인용 타임라인 분석

Krause Edward A. (San Diego CA) Paik Woo H. (Encinitas CA) Liu Vincent (San Diego CA) Essserman Jim (San Diego CA), Adaptive motion compensation for digital television.
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Veltman Markus H. (Tokyo JPX) Iwamura Ryuichi (Tokyo JPX), Interframe motion predicting method and picture signal coding/decoding apparatus.
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Yonemitsu Jun (Kanagawa JPX) Tahara Katsumi (Kanagawa JPX) Sato Tomoyuki (Tokyo JPX), Layer encoding apparatus and layer decoding apparatus for input non-interlace video signal.
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Chen Homer H. (Lincroft NJ) Ebrahimi Touradj (Ecublens CHX) Haskell Barin G. (Tinton Falls NJ) Horne Caspar (Beaverton OR), Method and apparatus for a region-based approach to coding a sequence of video images.
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Gharavi Hamid (Red Bank Borough NJ), Method and apparatus for low bit-rate interframe video coding.
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Kerdranvat Michel (Rennes FRX), Method and device for estimating and hierarchically coding the motion of sequences of images.
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Shishikui Yoshiaki (Tokyo JPX) Nishida Yukihiro (Tokyo JPX) Nakasu Eisuke (Tokyo JPX) Ohtsuka Yoshimichi (Tokyo JPX) Nakanishi Hiroshi (Tokyo JPX), Method of performing high efficiency coding of image signal and system therefor.
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Sugiyama Kenji (Yokosuka JPX), Predictive coding apparatus.
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Masaki Shoichi,JPX, Video coding apparatus and video decoding apparatus with an improved motion vector coding method.
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Kikuchi Yoshihiro,JPX ; Watanabe Toshiaki,JPX ; Dachiku Kenshi,JPX ; Ida Takashi,JPX ; Yamaguchi Noboru,JPX ; Chujoh Takeshi,JPX, Video coding/decoding apparatus which transmits different accuracy prediction levels.
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이 특허를 인용한 특허 (38) 인용/피인용 타임라인 분석

Sugiyama Kenji,JPX, Apparatus and method of motion-compensated predictive coding.
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Hwang, Hyo Sun; Jang, Kyung Hun; Kim, Youngsoo, Communication system using multi-band scheduling.
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Ryoma Oami JP, Device and method for hierarchically coding/decoding images reversibly and with improved coding efficiency.
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Kim, Jae-Yoel; Park, Chang-Soo, Device and method for transmitting subframe in mobile communication system.
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Albin Fran.cedilla.ois,FRX ; Knee Michael,GBX, Device for estimating motion by block matching.
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Kumaki Satoshi,JPX ; Matsumura Tetsuya,JPX ; Segawa Hiroshi,JPX ; Ishihara Kazuya,JPX ; Matsuura Yoshinori,JPX ; Hanami Atsuo,JPX, Image coding method and apparatus.
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Hagiwara, Katsuyuki; Tomiyasu, Kaname, Image encoding apparatus, image decoding apparatus, and their control method, and computer program and computer-readable storage medium.
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Kimura, Tsuyoshi, Image processing apparatus employing hierarchical encoding.
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Jeon, Byeong Moon; Park, Seung Wook; Park, Ji Ho, Inter-layer prediction method for video signal.
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Park, Seung Wook; Jeon, Byeong Moon; Park, Ji Ho, Inter-layer prediction method for video signal.
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Park, Seung Wook; Jeon, Byeong Moon; Park, Ji Ho, Inter-layer prediction method for video signal.
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Park, Seung Wook; Jeon, Byeong Moon; Park, Ji Ho, Inter-layer prediction method for video signal.
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Lee, Tammy; Han, Woo-jin; Chen, Jianle; Jung, Hae-kyung, Method and apparatus for encoding and decoding image by using large transformation unit.
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Lee, Tammy; Han, Woo-jin; Chen, Jianle; Jung, Hae-kyung, Method and apparatus for encoding and decoding image by using large transformation unit.
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[미국특허] Video coding/decoding apparatus which codes information indicating whether an intraframe or interframe predictive codin 원문보기

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[미국특허] Video coding/decoding apparatus which codes information indicating whether an intraframe or interframe predictive codin 원문보기

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이 특허에 인용된 특허 (10) 인용/피인용 타임라인 분석

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