A METHOD AND SYSTEM FOR PUSHING INFORMATION

Abstract: This invention relates to a method of transmitting information to a client comprising establishment of a first data tansmission connection/channel between the client and a central server; transmission via said first connection/channel from the server to the client, of at least an indication indicating that relevant information is available; receipt of said indication by the client; establishment or use of an already established second data-transmission connection/channel between the client and the central server on the background of said received indication; and transmission of said relevant information from the central server to the client via said second connection/channel. Besides, the invention relates to a system consisting of a client portion and a server portion. Hereby it is enabled to have information pushed from the server to one or more clients in a convenient manner.

Description: A METHOD AND SYSTEM FOR PUSHING INFORMATION This invention relates to a method of pushing/transmitting information to a client. The invention also relates to a system for same. In connection with the search for and/or receipt of information and/or data from eg the Internet where a com- prehensive corpus of information and data from an often wide variety of sources is found, it is a very considerable advantage to automatically receive the information that is of interest and relevance. Typically a user will use a browser, such as eg Netscape Communicator, Microsoft Internet Explorer or the like, on his computer to display information on an ht l-page containing eg various new information supplied by some provider or other. Such information/news are typically updated continuously to provide the user with the best possible service and to ensure that the user is updated with regard to the information supplied, but m order for the update to also ap- pear m the user's browser it is necessary for the user to activate an update-button m the browser or the like so as to once again reload the html-page containing the updated information. However this is not particularly convenient, m particular m case of information that is changed/updated quickly or frequently, such as share prices, news bulletins, sports results, etc. To solve this, a technology is available which is generally designated push technology that consists m that information, data, etc are forwarded to a client computer on a network, such as eg the Internet, without the user specifically requesting this information or needing to take other active measures. The information is so to speak pushed to the user's computer from the provider via the network. A push-like technology uses eg the system PointCast that is able to provide a user with relevant information as long as the user is online. However, PointCast is associated with certain drawbacks, since it presupposes that the user downloads a somewhat comprehensive program that is to be installed and configured correctly to work. Besides, programs such as PointCast establish their pushlike effect by actively listening m on a connection, which is also known as polling. In case of polling the program actively and periodically (perhaps once a second) enquires the provider of information, eg a server, m a loop that is, m principle, infinite. Thus, resources are taken up both at the client's and also on the server, since it has to respond to the enquiries from perhaps a large number of clients. In the following the term 'client' will be used to designate a local computer connected via a network, such as eg the Internet, to a central computer also referred to as a server. A server is typically connected to a number of clients that need not be located physically close to each other. It is an object of the invention to provide a method whereby it is possible to select and transmit relevant information/data to a client, ie a computer, in a network without presupposing one or more active measures on the part of the user. This means to provide a push of information from at least one server to at least one client. It is a further object to enable utilization of standard functionality in a program for handling and displaying information, such as eg a browser. It is a third object of the invention to provide flexibility with regard to the implementation of a desired safety level. It is a fourth object of the invention to at least enable simultaneity of transmission/receipt of relevant information and/or data. This means that all recipients are able to or, ceteris paribus, to an increased extent able to receive information and/or data at least substantially simultaneously. This is obtained by a method of the kind described above, wherein said method further comprises • establishment of a first data-transmission connection/channel between the client and a central server; • transmission, via said first connection/channel from the server to the client, of at least an indication indicating that relevant information is available; • receipt of said indication by the client; • establishment or use of an already established second data-transmission connection/channel between the client and the central server on the basis of said received indication; and • transmission of said relevant information from the central server to the client via said second connection/channel . Hereby an event-triggered automatic exposure of digital objects is provided, which means that - on the basis of a given event - relevant information/data will be received. For instance, the client may have information pushed regarding a new news telegram that a band plays nearby, that a new product is finished, commercials, and the like. Use of two transmission channels/connections further provides a high degree of flexibility with regard to safety against unauthorized access to the user's computer/system m connection with the push of information. The first connection that receives the indication does not necessarily have to possess a particularly high degree of safety, since this information cannot be of any use to anybody else. The functionality of this connection is comparatively readily implemented, monitored and controlled, since it needs only to react when an indication is received. Thus, there is no need to poll the server periodically, which would otherwise impose a load on the server and the client. The other connection can be implemented with a degree of safety that matches an actual need. If there is a need for a high degree of safety, this connection could be implemented with the so-called secure socket layer (SSL) m connection with a brower. Hereby safety features are provided, such as authentification of the server, encryption of transmitted information/data, etc. If a browser is used to constitute the second connection, the standard functionalities of the browser are used to a very high degree, which would translate into the fact that the remaining software necessary for a solution in accordance with the present invention does not have to be comprehensive and does not require cumbersome configuration. Furthermore, simultaneity - that is delivery of information/data simultaneously to a number of clients - is ac- complished completely or at least to a substantial extent, since it is merely an indication and not the information/data in its entirety that is transmitted. Thus, all users are able to receive the information at the same time . Such indication can be very small (much less than one single kilobyte) and therefore it is able to pass the network completely or substantially without delay. In this manner all clients will simultaneously receive a message that relevant information is available. Alternatively the indication can be accompanied by some kind of description of the object, eg a title, while retaining its very small size. According to one embodiment said first data-transmission connection is provided/established and controlled by program information intended therefor. Hereby the first data-transmission connection is controlled and monitored by an independent program or a program part. According to a preferred embodiment the method further comprises • initial transmission between the central server and the client of initial information comprising initial relevant information by the establishment of the second connection/channel; and • transmission and receipt of said program information from the central server and the client. Hereby it is possible for a user, via the client, to use eg a browser to establish a connection to a supplier of information/data via his html-page and to have relevant information displayed that has arrived since the user was last online, or merely to display the entire corpus of information/data to the user. Additionally, it is also obtained that the functionality needs not be installed, since the program/program information that opens and controls the first connection/communication channel is downloaded each time the user wishes to use the system/method. This provides the very considerable advantage that the user needs not himself install and configure a program to provide the functionality. Besides, it is also ensured that it is always the most recent version of the program that is used. Preferably the program information is a Java Applet. Hereby the functionality can also be provided independently of the specific platform/control system used by the client computer. All that is needed is that the browser used by the user must be able to run Java programs, which is the case for all standard orowsers. Alternatively, it must be checked whether there is a more recent version of the program information/applet available on the server and m that case to download it and otherwise merely use the existing one. Typically a Java Applet with such functionality (handling and control of the first communication connection/channel) will not be very capacity-intensive (typically about 50 kb) , which is relatively quickly transmitted via the Internet. According to one embodiment said first and second connections are established via the same physical connection on each their port. This considerably facilitates the administrative burden with regard to configuration and/or maintenance. Besides, standard server software can be used for the construction, configuration and/or maintenance. Besides, it is possible to freely choose web server and to freely choose standard communication programs at the client, such as eg browser. According to an alternative embodiment said first and second connections are established via the same physical connection on the same port. Apart from that, the connections can be established on each their physical connec- tion. According to one embodiment, the transmission of said relevant information from the central server to the client via said other connection/channel comprises • transmission of one or more links to a homepage, wherein said homepage comprises said relevant information; and • activation at the client of said one or more links whereby said relevant information is transmitted to the client. Alternatively a predetermined link/a predetermined URL is used to download the homepage. The homepage/html-page can either be found directly on the server and/or some other provider server. In case it is found only at another provider server, the server must be provided with relevant metadata that describe the in- formation on the homepage. According to a preferred embodiment, the central server continuously receives and stores in a storage system any new, relevant information deriving from one or more in- formation sources. Hereby relevant and topical information from other information and data sources are collected and optionally processed in order to optionally be forwarded to the cli- ent computers. This ensures ongoing updating and revision of the information and/or data on the server. A central processing of data/information is also ensured, and a client only needs one connection to a location to receive data from a variety of sources. According to one embodiment the central server continuously checks the storage system to detect relevant information, if any. Hereby it s ensured that updating of information and/or data is 'detected' and processed as expediently as possible. According to a preferred embodiment said indication is transmitted on the basis of an individual user profile relating the user(s) that use(s) the client, wherein the user profile depends on one or more user-selected cπte- rion/criteπa . In this manner, users are able to tailor the preferences that are particularly important to them. For instance, a user may indicate that he is more interested m sports than politics, etc. Besides they are also able to allocate a priority to various types of information and/or data. The user-specified criteria can be eg a category of m- formation, such as foreign affairs, domestic affairs, business and industry, politics, crime, finance, etc. Other user-specified criteria could be a priority plus keyword, such as eg ' Poul Nyrup ' and the like. According to an alternative embodiment said indication contains or is followed by a descriptive part, and the method further comprises display of the descriptive part to a user, where the user is to indicate his acceptance prior to transmission of said relevant information from the central server to the client via said second connection/channel . In this manner the user is able to make a choice in the light of the descriptive part that could be, for instance, a title, an abstrac , etc., prior to the transmission of the relevant information/data, and the user is thus able to decline the push if it is not desired to receive the information now or ever - whichever may be the case - which means that the information will not be downloaded, but merely stay ready on the server until the next time the user logs onto the system. Alternatively declining the push could cause the information to be removed from the user's information, and/or the user profile of the user to be updated. According to one embodiment, said first data transmission connection/channel can be provided by a TCPIP socket connection. This connection is very simple and does not impose a substantial load on neither the client nor the server . According to one embodiment said other data transmission connection/channel can be provided by a http or http/s connection whereby a standard browser can be used as user interface to have the relevant information displayed. https is used if there is a need for further safety. According to a preferred embodiment said information comprises metadata related to one or more of the following: • a given text format (ASCII, Word, WordPerfect, etc.); • a given image format (eg. JPEG, BMP, PCX, TIFF, GIF, etc. ) ; • a given sound format (eg WAV, VOC, Midi, etc.); and • a given streaming format (MPEG, AVI, RealAudio; RealVideo, etc.); or • other suitable digital formats. In this manner all types of different information formats and combinations thereof can be transmitted to the user/the client computer. Additionally, the invention comprises a method and em- bodiments thereof, whereby the above objects are also accomplished, wherein the method is a method of automatically pushing information to at least one client from a server comprising • continuous checks on the server whether relevant in- formation is present in a corpus of information that is of interest to one or more given clients in accordance with one or more pre-determined criteria; • provision and/or updating of at least a part of an html page that comprises said relevant information to the given client (s), wherein the html page is located on the server and/or some other provider server; • dispatch of a notification to be received by the given client (s), wherein said indication represents data to the effect that relevant and/or updated information is available on the server; • automatic provision of said information to the given client (s) on the basis of said indication and via said generated and/or updated html page. The html-page/homepage can be located either directly on the server and/or some other provider server. In case it is present at some other provider server only, the server is to be provided with relevant metadata that describe the information on the homepage at the other provider server . According to one embodiment, the method comprises receipt of program information from the server with the given client (s), where the program information causes the generated and/or updated html-page to be provided on the basis of said indication. According to one embodiment, said program information is transmitted to a client when the client logs onto the server, where the transmission is effected transparently for a user of the client. For instance, the program information is a Java applet that is transmitted to the client at each session. In this manner it is ensured that the version present at the user is always updated to the most recent functionality. Besides, the applet can be installed transparently to a user by the relevant client, which means that the applet is installed automatically without any active measures on the part of the user. Thus, the user does not have to spend time updating and configuring the program when new versions become available . According to one embodiment, said indication comprises a link or a URL to the generated and/or updated html-page, whereby a standard browser automatically provides the html-page . According to one embodiment said indication is transmitted via a first connection, respectively, and said information is transmitted via a second connection, respectively. According to one embodiment said first connection and said second connection are established via one single physical connection on each their port, via each their physical connection or via one single physical connection on the same port. According to one embodiment, said criteria comprise a modifiable user profile. According to one embodiment said indication is of small magnitude compared to the magnitude of said information. According to one embodiment, said information comprises metadata related to one or more of the following: • a given text format; • a given image format; • a given sound format; and • a given streaming format; or • other suitable digital formats . According to one embodiment, said first data transmission connection/channel is accomplished by means of a TCPIP socket connection. According to one embodiment said other data transmission connection/channel is accomplished by a http/https connection. It is a further object of the invention to provide a sys- tern that is associated with the same advantages for the same reasons as the above method. This is accomplished by means of a system of transmitting information comprising a client and a server, and • first means for establishing a first data transmission connectιon/channe_ between the client and a central server; • means for transmitting, via said first connec- tion/channel from the server to the client, at least an indication to indicate that relevant information is available; • other means for establishing or using an already established second data transmission connec- tion/channel between the client and the central server on the basis of said received indication; and • transmission of said relevant information from the central server to the client via said other connection/channel . According to one embodiment the system contains program information configured for providing/establishing and controlling said first data transmission connection. According to one embodiment said first and second connections are established via the same physical connection on each their port. Alternatively the first and the second connection can be established via the same physical connection on the same port or on each their physical con- nection. According to an alternative embodiment the system further comprises • initial transmission between the central server and the client of initial information comprising initial relevant information by the establishment of the second connection/channel; and • transmission and receipt of said program information from the central server and the client. According to a preferred embodiment, the central server comprises a storage system configured for storing new relevant information, if any, received currently from one or more information source (s) . According to an alternative embodiment said indication is transmitted on the basis of an individual user profile relating to the user(s) that use(s) the client, wherein said user profile depends on one or more user-selected enterion/criteria . According to one embodiment said indication contains or is followed by a descriptive part, and the method further comprises display of the descriptive part to a user, where the user is to express his acceptance prior to transmission of said relevant information from the central server to the client via said second connection/channel . According to one embodiment said first data transmission connection/channel is provided by a TCPIP socket connection, and said second data transmission connection/channel is provided by a http/https connection. The invention also comprises a client separately and a server separately, each featuring the above advantages and embodiments . Additionally the invention comprises a system for automatically pushing information to at least one client from a server, comprising a client and a server, wherein the server • is configured for continuously checking whether there is information available m an information corpus that is relevant to one or more given client (s) m accordance with one or more pre-determmed criteria; • comprises means for providing and/or updating at least a part of an html-page that comprises said relevant information to the given client (s), where the html-page is located on the server and/or some other provider server; • comprises transmission means for transmitting an indication for receipt by the given client (s), where said indication serves to notify that relevant and/or updated information is available on the server; and wherein each given client • comprises means for automatically providing said information on the basis of said indication and via said generated and/or updated html-page. According to one embodiment the given client (s) is/are configured to each receive program information, where said program information causes the generated and/or updated html-page to be provided on the basis of said mdi- cation. According to one embodiment said program information is transmitted to a client when the client logs onto the server, wherein the transmission is accomplished trans- parently to a user of the client. According to one embodiment said indication comprises a link or a URL to the generated and/or updated html-page, whereby a standard browser automatically provides the html-page . According to one embodiment said indication is transm_t- ted via a first respective connection, and said information is transmitted via a second respective connection. According to one embodiment, said first connection and said second connection are established via one single physical connection on each their port, via each their physical connection or via one single physical connection on the same port. In the following the invention will be explained m fur- ther detail with reference to the drawing, wherein Figure la illustrates a flowchart for an embodiment of the method according to the invention, as seen by the client; Figure lb illustrates a flowchart for an alternative embodiment of the method according to the invention, as seen by the client; Figure lc illustrates a flowchart for an alternative embodiment of the method according to the invention, as seen by the server; Figure 2 illustrates a flow of information for one em- bodiment of the invention; Figure 3 shows a schematical block diagram for one embodiment of the system according to the invention; and Figure 4 illustrates one embodiment of the system according to the invention in another manner; Figure 5 illustrates the course of communication between a server and a client in accordance with the invention. Figure la illustrates a flowchart of one embodiment of the method according to the invention, as seen by the client. The method is implemented and initiated in step (101) . In step (102) a first connection is established between the client and a server that is responsible for the provision of information. This establishment is initiated with the client who is also responsible for the handling thereof. In step (103) it is checked whether an indication is received on the first connection that indicates that relevant information is available on the server to one or more users of the client. Otherwise receipt of such indi- cation is awaited. So to speak, the client awaits this indication from the server. Users of the client can perform other tasks on the computer while awaiting the indication. The first connection could be a connection provided for instance by a TCPIP socket. Alternatively the user ca also be notified when the client receives the indication whereby the user becomes aware that there is new information/data. For instance, the user could also be introduced to a descriptive part, optionally received along with the indication. Besides, the user can be presented with an option that enables him to accept or decline download of the new information in order to thereby postpone display of the information to a later stage. In case such indication is received, the method proceeds to step (104) wherein the client establishes or uses an already established second connection. Such connection could be eg an http or https connection over the Internet. The second connection can either be a completely separate connection/channel or merely a second communica- tion port on the same connection as m step (102) . Then step (105) is performed wherein the new information is provided from the server, le is transmitted to the client m order to be subsequently displayed to the user in step (106) . This could be accomplished eg by an html-page displayed m a browser on the client being once again updated/downloaded whereby the new information becomes available. Now step (103) is once again performed and the client awaits new indications on the first connection. Figure lb illustrates a flowchart for an alternative embodiment of the method according to the invention, as seen by the client. The procedure starts m step (111). In step (112) a second connection to a server is estab- lished that is responsible for the provision of information. Alternatively a second port on the first connection is used/established. This could be accomplished eg in that a user of the client opens a browser on the computer/client and typed a URL whereby a connection to the server is established, and an html-page with initial information is displayed on the client. The initial information could be eg relevant information that have appeared since the user/client was last connected to the server. Receipt of initial information is accomplished in step (113) . In step (114) program information is received that is responsible for the establishment and control with a first connection. This program information could be for in- stance a Java applet that is downloaded to the client when, via a browser, it establishes the second connection in step (112) . Once this Java applet is received and executed, it estab- lishes a first connection by step (115) in order to subsequently await receipt of an indication that indicates that new information is available from the server. When the indication is received step (117) is executed, wherein the second connection (or second port/channel) is used to receive the indicated information that is displayed in step (118) following receipt. Then step (116) is once again executed and an indication of further new information, if any, is awaited. Figure lc illustrates a flowchart for an alternative embodiment of the method according to the invention, as seen by the server. The method is implemented and initiated m step (121) . In step (122) the server responsible for the provision of information is connected to a second connection with a client. This establishment is started with the client who is also responsible for the handling thereof. Then initial information is dispatched, such as eg an html-page with information, m step (123), following which program information, such as eg a Java Applet intended for controlling and establishing a first connection, is dispatched to the client along with the html- page . The Java Applet is executed at the client and establishes a first connection intended for receiving an indication of new information/data from the server. In step (126) it is checked whether the server has re- ceived any new information or not from one or more external news, data sources and/or the like. If this is not the case the test (126) is executeα yet again after a given time interval has lapsed. This is repeated until the server has received and detected new information, following which step (127) is executed. In step (127) the users/clients are determined to which the information received is relevant. This can be accomplished eg by having a user profile for each user/client, where eg fields of interest, priorities, keywords, preferences, etc. are listed. The user profile can be both a user-defmed/updated or a centrally controlled/defined user profile. An indication is subsequently dispatched via the first connection to the users/clients that are, according to their user profile, to receive the information/data. Then in step (129) the server awaits for the clients to request information, following which it is transmitted via the second connection/another port on the first connection. Preferably a URL/web-address is merely sent to a specified homepage comprising a the relevant information. This homepage can be found either on the server and/or on an external provider server. Subsequently step (126) is reverted to, wherein the server awaits receipt of further information. Figure 2 illustrates a flow of information for one embodiment of the invention. The figure schematically shows various components of a system according to the invention. Shown is a number of clients (201) whereas the remainder are functions m or m relation to a server that supplies information/data to the clients (201). A number of news distributors (202) transmit data to database generation (203) , where they are processed and stored as one or more database (s) m a storage system (204) . The storage system (204) is treated and filtered m (205) m accordance with a number of user profiles, and on the basis of these user profiles a number of html- pages are generated (206) . These pages (206) form the basis of the information offered to the clients (201) . By means of a number of connections the server is connected to the clients, where each client is connected to two connections/channels; a first connection (designated by 1) that communicates both ways, and a second connec- tion (designated by 2) that communicates information to the respective client (201) . These connections correspond to the first and the second connections explained above. Alternatively the two connections can be provided by use of two different pcrts on one single physical transmis- sion connection/channel. In this embodiment the users (201) are able to configure and modify their personal user profile as designated by (208) . Besides a system operator (209') is able to define system and supplier parameters as designated by (209) , whereas a client administrator (210') and a user administrator (211') deals with establishment of clients (210) and es- tablishment of users (211), respectively. This information is downloaded into the database (204). In the following possible formats and services are exemplified. Examples of formats processed in the database generation: 7901 and ' sgml processes' as structured in-data that are located in the database Examples of parameters updated by system administrator: specification whether individual log-on is required; global limits to the amount of lines in index; rules governing cookies and other log-on regulation. Examples of parameters updated by client administrator: client name, IP addresses from where log-on is executed; etc, and m particular which parts of the supplier's supply of mate- rial that are comprised by the clients subscription. Examples of parameters updated by the user administrator: - user id; password, username. Examples of parameters updated by users: password; - number of lines m index and search result; columns and order of columns m index; control of opening mechanism of browser windows (number of simultaneously open windows; as well as and m particular - which incoming deliveries among incoming data are to trigger an alarm, le opening of a separate browser window m which the contents are displayed/played. Comments to filtering and configuration of html pages index and alarm pages are configured per recorded active session Comments to control of log-on and push of pages. Each time an index page and optionally an alarm page has been constructed for the active users, notification is pushed on eg port 8530. Thus, the user opens a permanent session on port 8530 and receives data (1) . For instance, URLs are pushed to be used for a call on the parallel http session on part 80 (2) . Alternatively two separate connections/channels can be used. Additionally one single physical connection can be used where the same port, eg port 80, is used. In one implementation the various subscription rights entail that all users with a client to have their indexes updated simultaneously, and that index pages are updated at the individual client only when warranted by his subscription. Figure 3 shows a schematical block diagram for one embodiment of the system according to the invention. Shown m the figure is a client (301) that is a computer used by one or more users. The client (301) is equipped with a browser and is connected to the Internet (302) via a suitable connection such as eg a modem, a permanent data link, etc. Also connected to the Internet (302) is a server/a system (303), too, that is responsible for forwardmg/pushmg information to the client (301) /user. The server (303) could be for instance a UNIX server. The server (303) comprises suitable software as will be described m the following, a database (305) and a file system (304) . The client (301) /user logs onto the server (303) and calls the URL that shows recently arrived news bulletins and/or other mformation/data via a data transmission connection/channel (307) . One application, eg a Java application, on the server (303) produces an html page with news bulletins and/or other information/data that match the user's profile, and transmits this page back to the browser at the client (301; via the connection (307) over the Internet (302) . The connection (307) is typically an http/https connection. This html page is accompanied by a Java applet that is installed and started by the local browser on the client (301) . This applet generates a further connection (308), for instance a TCPIP socket, tc the Java application on the central server (303) . The applet subsequently 'listens m on' the connection following a notification/an indication that new news have arrived. At some point a news source (306), eg Ritzau, uploads with eg ftp a telegram to the file system (304) on the central server (303). The Java application continuously scans the area to which tne news source (s) (304) upload (s) the telegrams/information. The new information is 'detected' and the Java application records the telegram m the database (305) that could for instance be an Ora- cle database, eg version 7.3.4 or more a more recent one. The Java application knows which clients (301) /users that listen for news and forwards a notification/an indication about news to the clients (301) /users to which the tele- gram/information is to be directed, by means of user profiles via the connection (308) . The Java applet at the individual client (301) receives this indication and subsequently calls the URL m the browser via the connection (307), whereby the html page is updated with the new information. Subsequently the applet reverts to its listening position, and the process can be repeated. To handle the connection the server (303) has a Web Server, such as eg Apache 1.3.2. or a more recent version, and a 'servlet' interface, such as eg JSERV 0.9.10 or a more recent version. To handle the contact with the database (305) the server (303) can use Java JDBC driver or other suitable SQL interface . Typically the server/system (303) can be connected to several clients (301) at a time and keep connections open to them all as will be described in connection with Figure 4. Alternatively the system can consist of several servers in order to hereby enable scaling of the solution in a convenient manner depending on the number of users/clients . Figure 4 illustrates one embodiment of the system according to the invention in another manner. Herein a system is shown that consists of a number of 'listeners', ie clients (401) who are connected as de- scribed above via the Internet (404) to a central server (402) . The central server (402) is connected to a number of suppliers (403) of the information and/or the data that the server (402) can 'push' to the clients (401) . The server (402) is connected to each of the clients (401) via one single permanent data link (a first connection) for as long as they are logged onto the server (402) . When the server (402) has the information to be dispatched to one or more of the clients (401) (option- ally depending on the user configuration and profile) an indication is forwarded to the clients that will then each take measures to establish a further connection whereby the information is thus transmitted. Figure 5 illustrates the course of communication between a server and a client m accordance with the invention. Shown schematically is a server (S) and a client (C) . First (501) the client/a user logs onto the system/a central server, preferably via a second connection (eg via an http/https connection on port 80) . Then the server checks the client's IP address m order to determine the rights of the client with regard to eg access to information. If the check turns out to be OK, eg a start html- page is transmitted (502) to the client, preferably also via the second connection. The start html-page can contain eg a news survey with the most recent data/information that is of interest to a user with the client . Preferably a program (eg a Java applet) is transmitted to the client. Hereby the user does not have to worry about installation, updating, etc, of the programme. Alternatively the program is merely activated at the client, eg by log-on. This program preferably opens a first connec- tion (eg via a TCP/IP) socket connection on port 8530) to the server and informs (503) the server that the client is ready to receive relevant/updated information. The server subsequently checks whether further relevant information has arrived after the start page was dispatched. When/if this happens the server forwards (504) an indication to the client, preferably via said first connection. The programme/Java applet at the client receives this indication and subsequently calls (505) a URL (eg a static URL known to the programme/the Java applet) to a homepage with the new/updated information in a standard browser, whereby the html page is updated, prefera- bly via the second connection, meaning that the relevant new/updated information is forwarded (506) to the client for display on eg the browser, also via the second connection. The homepage/the html-page can either be found directly on the central server and/or on an alternative provider server. If it is found only on another provider server, the server is to be provided with relevant metadata that describe the information on the homepage on the other provider server and features a link thereto. In this manner automated push of relevant/updated information to a client/user is obtained. The fact that an indication (and not the information as such) is forwarded ensures substantial simultaneity for access to the new information by all the clients that have desired to receive this kind of information (eg in accordance with a user profile) . The actual lapse before the information is provided depends on the bandwidth between a client and the updated page. Alternatively the information relating to the URL or a link to the updated homepage is transmitted (504') via the first connection, either along with the indication or immediately following same. The first and the second connections can be established eg via the same physical connection on each their port (eg port 80 for the second and port 830 for the first one) . Other ports can also be used. Alternatively said first and second connections are established via the same physical connection on the same port. As a further alter- native, said first and second connection can be established on each their physical connection.

Claims: C l a i m s 1. A method of transmitting information to a client comprising • establishment of a first data-transmission connection/channel between the client and a central server; • transmission, via said first connection/channel from the server to the client, of at least an indication indicating that relevant information is available; • receipt of said indication by the client; • establishment or use of an already established second data-transmission connection/channel between the client and the central server on the background of said received indication; and • transmission of said relevant information from the central server to the client via said second connection/channel . 2. A method according to claim 1, characterised in that said first data transmission connection is provided/established and controlled by program information intended therefor. 3. A method according to claims 1-2, characterised in that the method further comprises • initial transmission between the central server and the client of initial information comprising initial relevant information by the establishment of the second connection/channel; and • transmission and receipt of said program information from the central server and the client. 4. A method according to claims 2-3, characaterised in that said program information is a Java Applet. 5. A method according to claims 1-4, characterised in that said first and second connections are established via the same physical connection on each their port. 6. A method according to claims 1-4, characterised in that said first and second connections are established via the same physical connection on the same port. 7. A method according to claims 1-6, characterised in that transmission of said relevant information from the central server to the client via said second connec- tion/lmk comprises • transmission of one or more links to a homepage, wherein said homepage comprises said relevant information; and • activation at the client of said one or more links whereby said relevant information is transmitted to the client. 8. A method according to claims 1-6, characterised in that the central server continuously receives and stores any new relevant information from one or more information sources m a storage system. 9. A method according to claim 8, characterised in that the central server continuously checks the storage system for new relevant information, if any. 10. A method according to claims 1-9, characterised in that said indication is transmitted on the basis of an individual user profile relating to the user(s) that use(s) the client, wherein the user profile depends on one or more user-selected criterion/criteria. 11. A method according to claims 1-10, characterised in that said indication contains or is followed by a descriptive part, and the method further comprises display of the descriptive part to a user, wherein the user is to indicate his acceptance prior to transmission of sa_d relevant information from the central server to the cl_- ent via said second connection/channel. 12. A method according to claims 1-11, characterised in that said first data transmission connection/channel _s provided by a TCPIP socket connection. 13. A method according to claims 1-12, characterised in that said second data transmission connection/channel s provided by an http/https connection. 14. A method according to claims 1-13, characterised in that said information comprises metadata related to one or more of the following: • a given text format; • a given image format; • a given sound format; and • a given streaming format; or • other suitable digital formats. 15. A system for transmitting information comprising a client and a server and • first means for establishing a first data transmission connection/channel between the client and a central server; • means for transmitting, via said first connection/channel from the server to the client, at least an indication to indicate that relevant information is available; • other means for establishing or using an already established second data transmission connection/channel between the client and the central server on the basis of said received indication; and • transmission of said relevant information from the central server to the client via said second connection/channel . 16. A system according to claim 15, characterised in that the system contains program information configured for providing/establishing and controlling said first data transmission connection. 17. A system according to claims 15-16, characterised in that said first and second connections are established via the same physical connection on each their port. 18. A system according to claims 15-17, characterised in that the system further comprises • initial transmission between the central server and the client of initial information comprising initial relevant information by the establishment of the second connection/channel; and • transmission and receipt of said program information from the central server and the client. 19. A system according to claims 15-18, characterised in that the central server comprises a storage system configured for storing new, relevant information, if any, received continuously from one or more information sources . 20. A system according to claims 15-19, characterised in that said indication is transmitted on the basis of an individual user profile relating to the user(s) that use(s) the client, where the user profile depends on one or more user-selected criterion/criteria. 21. A system according to claims 15-20, characterised in that said indication contains or is followed by a descriptive part, and wherein the method further comprises display of the descriptive part to a user, wherein the user is to indicate his acceptance prior to transmission of said relevant information from the central server to the client via said second connection/channel. 22. A system according to claims 15-21, characterised in that said first data transmission connection/channel is provided by a TCPIP socket connection, and wherein said second data transmission connection /channel is provided by an http/https connection. 23. A method of automatically pushing information to at least one client from a server comprising • continuous checks on the server whether relevant information is present in a corpus of information that is of interest to one or more given clients in accordance with one or more pre-determined crite- rion/criteria; • provision and/or updating of at least a part of an html page that comprises said relevant information to the given client (s), wherein the html page is lo- cated on the server and/or some other provider server; • dispatch of a notification to be received by the given client (s), wherein said indication represents data to the effect that relevant and/or updated information is available on the server; • automatic display of said information to the given client (s) on the basis of said indication and via said generated and/or updated html page. 24. A method according to claim 23, characterised in that the method method comprises receipt of program information from the server with the given client (s), where the program information causes the generated and/or updated html-page to be provided on the basis of said indication. 25. A method according to claim 24, characterised in athat said program information is transmitted to a client when the client logs onto the server, where the transmis- sion is effected transparently to a user of the client. 26. A method according to claims 23-25, characterised in that said indication comprises a link or a URL to the generated and/or updated html-page, whereby a standard browser automatically provides the html-page. 27. A method according to claims 23-26, characterised in that said indication is transmitted via a first connection, respectively, and said information is transmitted via a second connection, respectively. 28. A method according to claim 27, characterised in that first connection and said second connection is established via one single physical connection on each their port, via each their physical connection or via one single physical connection on the same port. 29. A method according to claims 23-29, characterised m that, said criteria comprise a modifiable user profile. 30. A method according to claims 23-29, characterised in that said indication is of small magnitude compared to the magnitude of said information. 31. A method according to claims 23-30, characatensed in that said information comprises metadata related to one or more of the following: • a given text format; • a given image format; • a given sound format; and • a given streaming format; or • other suitable digital formats. 32. A method according to claims 23-31, characterised in that said first data transmission connection/channel s accomplished by means of a TCPIP socket connection. 33. A method according to claims 23-32, characterised in that said second data transmission connection/channel is accomplished by a http/https connection. 34. A system for automatically pushing information to at least one client from a server, comprising a client and a server, wherein the server • is configured for continuously checking whether there is information available m an information corpus that is relevant to one or more given cli- ent(s) in accordance with one or more pre-determined criteria; • comprises means for providing and/or updating at least a part of an html-page that comprises said relevant information to the given client (s), where the html-page is located on the server and/or some other provider server; • comprises transmission means for transmitting an indication for receipt by the given client (s), where said indication serves to notify that relevant and/or updated information is available on the server; and wherein each given client • comprises means for automatically providing said in- formation on the basis of said indication and via said generated and/or updated html-page. 35. A system according to claim 34, characterised in that the given client (s) is/are configured to each receive program information, where said program information causes the generated and/or updated html-page to be provided on the basis of said indication. 36. A system according to claim 35, characterised in that said program information is transmitted to a client when the client logs onto the server, wherein the transmission is accomplished transparently to a user of the client. 37. A system according to claims 34-36, characterised in that said indication comprises a link or a URL to the generated and/or updated html-page, whereby a standard browser automatically provides the html-page. 38. A system according to claims 34-37, characterised in that said indication is transmitted via a first respective connection, and said information is transmitted via a second respective connection. 39. A system according to claim 38, characterised in that said first connection and said second connection are established via one single physical connection on each their port, via each their physical connection or via one single physical connection on the same port.

Inventors: GREGERSEN CARSTEN RHOD, HOEJER-PEDERSEN NIELS, SCHACK ULRIK ARNDT, STEGMANN UFFE, WULLF JENS WINTHER, GREGERSEN, CARSTEN, RHOD, HOEJER-PEDERSEN, NIELS, SCHACK, ULRIK, ARNDT, STEGMANN, UFFE, WULLF, JENS, WINTHER
Applicants: GREGERSEN CARSTEN RHOD, HOEJER PEDERSEN NIELS, RITZAUS MEDIENET AS, SCHACK ULRIK ARNDT, STEGMANN UFFE, WULLF JENS WINTHER, GREGERSEN, CARSTEN, RHOD, HOEJER-PEDERSEN, NIELS, RITZAUS MEDIENET A/S, SCHACK, ULRIK, ARNDT, STEGMANN, UFFE, WULLF, JENS, WINTHER
Application year: 2001
Main classification: G06F17
IPC codes: G06F17