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1. (WO1997016920) IMAGE COMMUNICATIONS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/016920 International Application No.: PCT/GB1996/002695
Publication Date: 09.05.1997 International Filing Date: 04.11.1996
Chapter 2 Demand Filed: 30.05.1997
IPC:
H04N 1/00 (2006.01) ,H04N 1/32 (2006.01) ,H04N 1/333 (2006.01) ,H04N 1/411 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
1
Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
1
Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
32
Circuits or arrangements for control or supervision between transmitter and receiver
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
1
Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
32
Circuits or arrangements for control or supervision between transmitter and receiver
333
Mode signalling or mode changing; Handshaking therefor
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
1
Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
41
Bandwidth or redundancy reduction
411
for the transmission or reproduction of two-tone pictures, e.g. black and white pictures
Applicants:
INTERNATIONAL MOBILE SATELLITE ORGANIZATION [--/GB]; 99 City Road London EC1Y 1AX, GB (AllExceptUS)
TRACHTMAN, Eyal [IL/GB]; GB (UsOnly)
Inventors:
TRACHTMAN, Eyal; GB
Agent:
MUSKER, David, Charles ; R.G.C. Jenkins & Co. 26 Caxton Street London SW1H 0RJ, GB
Priority Data:
9522487.902.11.1995GB
Title (EN) IMAGE COMMUNICATIONS
(FR) TRANSMISSIONS D'IMAGES
Abstract:
(EN) An image interface circuit for compressing an image for subsequent transmission via a radio transmission channel, comprising: an image reception port; an image reception circuit (100) for receiving an image from said image reception port in a first compressed signal format; an image decompression circuit for decompressing said first compressed signal format; an image segmenting circuit for segmenting the image into text and non-text areas; an optical character recogniser for recognising text characters in the text areas and generating corresponding character data; an image encoder circuit for compression-encoding the non-text areas into an image data in a second image signal format different to said first image format; a compressed image transmission port connected to said radio transmission channel, and; a signal combiner circuit for combining the character data and the image data into a combined signal and supplying the combined signal to the compressed image transmission port.
(FR) Cette invention concerne un circuit d'interface image destiné à comprimer une image en vue de sa transmission ultérieure par l'intermédiaire d'un canal de transmission radio. Ledit circuit comporte un point d'accès de réception d'image, un circuit (100) de réception d'image destiné à recevoir une image en provenance dudit point d'accès de réception d'image dans un premier format de signaux comprimés, un circuit de décompression des images destiné à décomprimer ledit premier format de signaux comprimés, un circuit de segmentation des images destiné à segmenter l'image en zones de texte et non texte, un dispositif optique de reconnaissance des caractères destiné à reconnaître les caractères de texte dans les zones de texte et pour générer les données de caractères correspondantes, un circuit codeur d'images destiné à coder et comprimer les zones qui ne sont pas du texte en des données d'images selon un second format de signaux d'images différent dudit premier format d'image, un point d'accès destiné à la transmission des images comprimées et relié audit canal de transmission radio et, enfin, un circuit combineur de signaux destiné à combiner les données de caractères et les données d'images en un signal combiné et à amener le signal combiné vers le point d'accès de transmission des images comprimées.
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, HU, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TR, TT, UA, UG, US, UZ, VN
African Regional Intellectual Property Organization (ARIPO) (KE, LS, MW, SD, SZ, UG)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0858707EP1189423US20020037107JPH11515153 CA2233712AU1996073238