WO2005112422A1 - Procede et dispositif pour transmettre des images dans un reseau - Google Patents

Procede et dispositif pour transmettre des images dans un reseau Download PDF

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Publication number
WO2005112422A1
WO2005112422A1 PCT/DE2005/000650 DE2005000650W WO2005112422A1 WO 2005112422 A1 WO2005112422 A1 WO 2005112422A1 DE 2005000650 W DE2005000650 W DE 2005000650W WO 2005112422 A1 WO2005112422 A1 WO 2005112422A1
Authority
WO
WIPO (PCT)
Prior art keywords
image
data unit
network
data
packets
Prior art date
Application number
PCT/DE2005/000650
Other languages
German (de)
English (en)
Inventor
Diana Filimon
Stefan Heiss
Original Assignee
Fujitsu Siemens Computers 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 Fujitsu Siemens Computers Gmbh filed Critical Fujitsu Siemens Computers Gmbh
Priority to EP05742901A priority Critical patent/EP1745638A1/fr
Publication of WO2005112422A1 publication Critical patent/WO2005112422A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
    • H04N1/00204—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a digital computer or a digital computer system, e.g. an internet server
    • H04N1/00209—Transmitting or receiving image data, e.g. facsimile data, via a computer, e.g. using e-mail, a computer network, the internet, I-fax
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32609—Fault detection or counter-measures, e.g. original mis-positioned, shortage of paper
    • H04N1/32625—Fault detection
    • H04N1/32641—Fault detection of transmission or transmitted data, e.g. interruption or wrong number of pages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N2201/3201—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N2201/3225—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document
    • H04N2201/3242—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document of processing required or performed, e.g. for reproduction or before recording

Definitions

  • the invention relates to a method for sending an image within a network and a method for receiving and displaying an image that has been sent within a network.
  • the invention further relates to the application of the method and an arrangement for sending an image and for receiving and displaying an image.
  • a possible basic concept for computer networks is the peer-to-peer architecture, in which all members of the network have equal rights.
  • the peer-to-peer architecture is also suitable for spontaneously established (ad-hoc) networks based on wireless transmission technology such as Bluetooth or WLAN (Wireless Local Area Network).
  • the peer-to-peer architecture is able to deal flexibly with new members or members who are no longer required, and does not require a predefined basic network structure.
  • a network protocol without feedback about data retention is recommended in order to keep the communication effort low. Due to the nature of the system, such a network protocol allows transmission errors. This can become problematic for wireless networks that are susceptible to interference due to interference with other punk waves or due to reflection of their own signal or absorption. If, for example If images are transmitted within the framework of a presentation within the network, incorrectly transmitted data can result in too much image information being lost in order to make the content understandable.
  • the way in which image information is encoded in data units usually requires that an error within the data unit affects the entire subsequent stored image information.
  • the invention minimizes the effect of an error on the entire image content by dividing the image into sectors that are sent separately, received and displayed. An error thus affects a smaller unit of information, which reduces the interference caused by the error in the entire image. With the positioning information, the remaining sectors are correctly positioned even in the absence of sectors.
  • Figure 1 shows an embodiment of the arrangement according to the invention for sending an image
  • Figure 2 shows an embodiment of the arrangement according to the invention for receiving and displaying an image.
  • FIG. 1 shows a first computer 1 as an exemplary embodiment of an arrangement for sending an image.
  • the first computer 1 has a first screen 2, means for extracting the image information 3, a data compressor 4, a device for breaking down into packets 5 and a transmitting device 6, via which the first computer 1 is connected to a network 7.
  • An image 11 having a sector 12 is reproduced from the first screen 2.
  • a data unit 13, a compressed data unit 14 and packets 15 are shown to illustrate the method carried out.
  • this image 11 is broken down into sectors 12.
  • the image 11 is in horizontal stripes disassembled, any other division that completely fills the image 11 is also conceivable.
  • the sectors 12, of which only one is shown here by way of example, are processed successively. They are first fed to the means for extracting the image information 3, which creates the data unit 13 from the image information of the sector 12 in accordance with a predetermined coding rule. The data unit 13 is then fed to the data compressor 4, which creates the compressed data unit 14.
  • the data compressor 4 advantageously uses methods for run length encoding (RLE) which offer a high degree of compression for compressing images.
  • the means for extracting the image information 3 and the data compressor 4 can be carried out by one unit.
  • the data unit 13 and / or the compressed data unit 14 can be stored both in the main memory of the computer 1 and for temporary storage in the form of data in a non-volatile memory.
  • Both the data unit 13 and the compressed data unit 14 contain, in addition to the image information, the relative position of the sector 12 within the image 11 as additional information.
  • the size (height, width) of the sector 12 can also be specified, if this is not implicit the coding regulation for the image information results.
  • the compressed data unit 14 prepared in this way is then fed to the device for disassembling the packets 5.
  • the content of the compressed data unit 14 is divided into a sequence of packets 15, the size of which of the packets 15 depends on the network protocol used.
  • each packet 15 is provided with the name of the compressed data unit 14 and a consecutive number.
  • the packets 15 are then successively sent from the transmitter device 6 into the network 7.
  • a network protocol that allows data packets to be sent without the prior establishment of a connection with a reception protocol (handshake) is, for example, UDP (User Datagram Protocol), which is based on the IP (Internet Protocol).
  • FIG. 2 shows an exemplary embodiment of an arrangement for receiving and displaying an image.
  • a second computer 21 is also connected to the network 7.
  • the second computer 21 has a second screen 22, means for displaying the data unit 23, a data decompressor 24, a device for assembling packets 25 and a receiving device 26.
  • a data unit 33, a compressed data unit 34 and packets 35 are also shown.
  • Data recorded by the receiving device 26 are compiled into packets 35 from the network 7.
  • incorrect data packets 35 can occur, as is symbolically shown for a data packet in FIG. 2.
  • the data packets 35 are fed to the device for assembling packets 25, which assembles the packets 35 to form the compressed data unit 34.
  • the packets Based on the additional information about the name of the compressed data unit and the consecutive number, the packets can 35 clearly assigned to a compressed data unit 34.
  • the consecutive number can also be used to determine whether data packets 35 have been lost during the transmission.
  • Some transmission protocols also offer the possibility of transmitting a checksum by means of which the integrity of the data in a packet 35 can be checked.
  • Lost or faulty data packets 35 can now be taken into account by the device for assembling packets 25 in various ways. For example, it is possible to replace a faulty data packet with a predetermined data packet that does not carry any image information, but ensures that the error does not propagate into the image content of the following packets 35.
  • the compressed data unit 34 is now converted by the data decompressor 24 into the uncompressed data unit 33, which is fed to the means for displaying the image information 23. This takes the additional information about the position and possibly the size of the sector 32 within the image 31 from the data unit 33 and represents this sector 32 at the specified position.
  • a coding method was used in which the image information is contained in the data unit 33 line by line from the upper left point of a sector.
  • an error in a package 35 only leads to an incorrect representation of the image information contained in this package 35.
  • the image information of subsequent packets 35 is also affected.
  • the effect of the error remains limited to one sector 32 by the method according to the invention.
  • the data decompressor 24 and the means for displaying the image information 23 can alternatively be combined into one unit.

Abstract

La présente invention concerne un procédé pour envoyer une image (11) et un procédé pour recevoir et afficher une image (31) dans un réseau (7). Ces procédés sont caractérisés en ce que l'image (11) est décomposée en au moins deux secteurs (12) avant l'envoi et une unité de données (13) est produite pour chaque secteur (12). Cette unité de données renferme le contenu d'image du secteur correspondant (12) sous forme codée, ainsi que des informations concernant la position relative du secteur correspondant (12) dans l'image (11). Inversement, des secteurs correspondants (32) sont assemblés pour former l'image (31) à l'aide des unités de données reçues (33). Ces procédés permettent de minimiser les effets d'une défaillance de transmission, notamment dans des réseaux sans fil.
PCT/DE2005/000650 2004-05-11 2005-04-12 Procede et dispositif pour transmettre des images dans un reseau WO2005112422A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05742901A EP1745638A1 (fr) 2004-05-11 2005-04-12 Procede et dispositif pour transmettre des images dans un reseau

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004023300.4 2004-05-11
DE102004023300 2004-05-11

Publications (1)

Publication Number Publication Date
WO2005112422A1 true WO2005112422A1 (fr) 2005-11-24

Family

ID=34968143

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2005/000650 WO2005112422A1 (fr) 2004-05-11 2005-04-12 Procede et dispositif pour transmettre des images dans un reseau

Country Status (2)

Country Link
EP (1) EP1745638A1 (fr)
WO (1) WO2005112422A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007025910A1 (fr) * 2005-08-31 2007-03-08 Sony Ericsson Mobile Communications Ab Terminaux de communications mobiles sans fil, systemes et procedes de presentation d'un diaporama
US7546144B2 (en) 2006-05-16 2009-06-09 Sony Ericsson Mobile Communications Ab Mobile wireless communication terminals, systems, methods, and computer program products for managing playback of song files
US7555291B2 (en) 2005-08-26 2009-06-30 Sony Ericsson Mobile Communications Ab Mobile wireless communication terminals, systems, methods, and computer program products for providing a song play list
US7925244B2 (en) 2006-05-30 2011-04-12 Sony Ericsson Mobile Communications Ab Mobile wireless communication terminals, systems, methods, and computer program products for publishing, sharing and accessing media files
US7991268B2 (en) 2006-08-18 2011-08-02 Sony Ericsson Mobile Communications Ab Wireless communication terminals, systems, methods, and computer program products for media file playback
GB2458792B (en) * 2008-03-31 2013-02-06 Fujitsu Ltd Information processing apparatus and method thereof
US8914070B2 (en) 2005-08-31 2014-12-16 Thomson Licensing Mobile wireless communication terminals, systems and methods for providing a slideshow

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5917962A (en) * 1995-06-06 1999-06-29 Apple Computer, Inc. Method and apparatus for partitioning an image
EP1311125A2 (fr) * 2001-11-12 2003-05-14 Sony Corporation Système et méthode de communication de données, appareil et méthode de transmission de données, appareil de réception de données, méthode de traitement de données recues et programme d'ordinateur

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5917962A (en) * 1995-06-06 1999-06-29 Apple Computer, Inc. Method and apparatus for partitioning an image
EP1311125A2 (fr) * 2001-11-12 2003-05-14 Sony Corporation Système et méthode de communication de données, appareil et méthode de transmission de données, appareil de réception de données, méthode de traitement de données recues et programme d'ordinateur

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7555291B2 (en) 2005-08-26 2009-06-30 Sony Ericsson Mobile Communications Ab Mobile wireless communication terminals, systems, methods, and computer program products for providing a song play list
WO2007025910A1 (fr) * 2005-08-31 2007-03-08 Sony Ericsson Mobile Communications Ab Terminaux de communications mobiles sans fil, systemes et procedes de presentation d'un diaporama
US8914070B2 (en) 2005-08-31 2014-12-16 Thomson Licensing Mobile wireless communication terminals, systems and methods for providing a slideshow
US7546144B2 (en) 2006-05-16 2009-06-09 Sony Ericsson Mobile Communications Ab Mobile wireless communication terminals, systems, methods, and computer program products for managing playback of song files
US7890088B2 (en) 2006-05-16 2011-02-15 Sony Ericsson Mobile Communications Ab Mobile wireless communication terminals, systems, methods, and computer program products for managing playback of song files
US8000742B2 (en) 2006-05-16 2011-08-16 Sony Ericsson Mobile Communications Ab Mobile wireless communication terminals, systems, methods, and computer program products for managing playback of song files
US7925244B2 (en) 2006-05-30 2011-04-12 Sony Ericsson Mobile Communications Ab Mobile wireless communication terminals, systems, methods, and computer program products for publishing, sharing and accessing media files
US8090360B2 (en) 2006-05-30 2012-01-03 Sony Ericsson Mobile Communications Ab Mobile wireless communication terminals, systems, methods, and computer program products for publishing, sharing and accessing media files
US8229405B2 (en) 2006-05-30 2012-07-24 Sony Ericsson Mobile Communications Ab Communication terminals, systems, methods, and computer program products for publishing, sharing and accessing media files
USRE46258E1 (en) 2006-05-30 2016-12-27 Sony Mobile Communications Ab Communication terminals, systems, methods, and computer program products for publishing, sharing and accessing media files
US7991268B2 (en) 2006-08-18 2011-08-02 Sony Ericsson Mobile Communications Ab Wireless communication terminals, systems, methods, and computer program products for media file playback
GB2458792B (en) * 2008-03-31 2013-02-06 Fujitsu Ltd Information processing apparatus and method thereof

Also Published As

Publication number Publication date
EP1745638A1 (fr) 2007-01-24

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