CA2026503A1 - Appareil de traitement de donnees d'imagerie qui etablit automatiquement le rapport de compression des donnees - Google Patents

Appareil de traitement de donnees d'imagerie qui etablit automatiquement le rapport de compression des donnees

Info

Publication number
CA2026503A1
CA2026503A1 CA2026503A CA2026503A CA2026503A1 CA 2026503 A1 CA2026503 A1 CA 2026503A1 CA 2026503 A CA2026503 A CA 2026503A CA 2026503 A CA2026503 A CA 2026503A CA 2026503 A1 CA2026503 A1 CA 2026503A1
Authority
CA
Canada
Prior art keywords
image data
block
code amount
activity
entire screen
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.)
Granted
Application number
CA2026503A
Other languages
English (en)
Other versions
CA2026503C (fr
Inventor
Akira Yamauchi
Hideki Mimura
Tomoko Ono
Fumio Izawa
Mikio Kakizaki
Takaaki Suyama
Shuichi Hisatomi
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.)
Toshiba Corp
Toshiba AVE Co Ltd
Original Assignee
Toshiba Corp
Toshiba Audio Video Engineering Co Ltd
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Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=17258601&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2026503(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Toshiba Corp, Toshiba Audio Video Engineering Co Ltd filed Critical Toshiba Corp
Publication of CA2026503A1 publication Critical patent/CA2026503A1/fr
Application granted granted Critical
Publication of CA2026503C publication Critical patent/CA2026503C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Human Computer Interaction (AREA)
  • Television Signal Processing For Recording (AREA)
  • Studio Devices (AREA)

Abstract

L'invention porte sur un appareil photographique électronique qui convertit l'image saisie d'un sujet en données d'imagerie numériques qu'il enregistre sur une carte de mémoire à semi-conducteur. Les données d'imagerie numériques obtenues avec cet appareil photographique électronique sont stockées sur un support d'enregistrement de grande capacité au moyen d'un dispositif d'enregistrement exclusif, ou sont affichées sur plusieurs moniteurs, ou sont stockées sur un disque ou une bande magnétique par des dispositifs d'enregistrement courants, ou sont comprimées, expansées, éditées ou traitées, de façon à pouvoir répondre à une grande diversité de demandes de la part des utilisateurs. Un appareil de traitement de données d'imagerie convertit l'image saisie en données d'imagerie numériques, comprime ces données d'imagerie numériques et les enregistre dans une mémoire. Cet appareil comprend un dispositif servant à diviser un écran en une pluralité de blocs, à calculer une activité en numérisant la complexité des données d'imagerie de chaque bloc et l'activité de l'ensemble de l'écran des données d'imagerie, à déterminer la quantité de codage pour l'ensemble de l'écran en fixant le taux de compression des données d'après l'activité de l'ensemble de l'écran, et en déterminant la quantité de codage affectée à chaque bloc proportionnellement à l'activité calculée pour chacun d'eux, ce qui contrôle la quantité de codage de chaque bloc. Un second dispositif peut être utilisé pour fixer la quantité de codage de l'ensemble de l'écran d'après un taux de compression des données réglé manuellement, puis fixer la quantité de codage de chacun des blocs divisé d'après l'activité calculée pour chaque bloc, ce qui contrôle la quantité de codage de chaque bloc.
CA 2026503 1989-09-29 1990-09-28 Appareil de traitement de donnees d'imagerie qui etablit automatiquement le rapport de compression des donnees Expired - Lifetime CA2026503C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP25398089A JP2921879B2 (ja) 1989-09-29 1989-09-29 画像データ処理装置
JP1-253980 1989-09-29

Publications (2)

Publication Number Publication Date
CA2026503A1 true CA2026503A1 (fr) 1991-03-30
CA2026503C CA2026503C (fr) 1999-03-23

Family

ID=17258601

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Application Number Title Priority Date Filing Date
CA 2026503 Expired - Lifetime CA2026503C (fr) 1989-09-29 1990-09-28 Appareil de traitement de donnees d'imagerie qui etablit automatiquement le rapport de compression des donnees

Country Status (6)

Country Link
US (3) US5661823A (fr)
EP (3) EP0687100A3 (fr)
JP (1) JP2921879B2 (fr)
KR (1) KR940009487B1 (fr)
CA (1) CA2026503C (fr)
DE (1) DE69033464T2 (fr)

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Also Published As

Publication number Publication date
EP0685969A2 (fr) 1995-12-06
EP0687100A3 (fr) 1996-04-03
EP0685969A3 (fr) 1996-02-07
DE69033464T2 (de) 2000-07-20
US6020982A (en) 2000-02-01
JPH03117181A (ja) 1991-05-17
EP0685969B1 (fr) 2000-02-23
EP0687100A2 (fr) 1995-12-13
KR910007357A (ko) 1991-04-30
US6295139B1 (en) 2001-09-25
CA2026503C (fr) 1999-03-23
DE69033464D1 (de) 2000-03-30
KR940009487B1 (ko) 1994-10-14
EP0422447A2 (fr) 1991-04-17
US5661823A (en) 1997-08-26
EP0422447A3 (en) 1993-08-18
JP2921879B2 (ja) 1999-07-19

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