Abstract:
A system and method for real time dissemination of information is provided. One server receives and data bases the information while another server disseminates the information; instead of one server receiving the information, data basing the information, and disseminating the information to all users requesting the information.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention generally relates to data processing. Particularly, the present invention relates to a system and methods for disseminating information. 
     2. Description of the Related Art 
     It has long been recognized that accesses to timely information regarding current conditions in various commodities and financial markets are essential to profitable trading and investment. Many complex investment strategies require precise and careful timing of specific transactions in response to fluctuating market conditions. This is particularly true in today&#39;s fast-moving markets where the ability to respond quickly to changing market conditions may mean the difference between substantial profits or devastating losses. Many investors rely heavily on real-time stock quotes when implementing their investment strategies, and most of those investors get their real-time stock quotes from a brokerage company. Thus, a successful brokerage company must be able to provide stock quotes as accurately and efficiently as possible. 
     Stock quotes are currently provided by stock exchanges, such as New York Stock Exchange, NASDAQ, etc., to a field vender such as Bloomberg or Comstock. After parsing the stock quote information received from the stock exchanges, the field vender then sends the stock quote information to a quote server at a rate of about 1,000 to 2,000 packets per second. The quote server is typically located at a regional brokerage office such as TradeCast or Merrill Lynch. The quote server has a database and keeps track of the history of each specific stock quote. If the stock quote is not in the database, the quote server adds the stock quote to the database. If the stock quote is already in the database, then the quote server updates the database. Next, the quote server checks to see if a registered user has requested that particular stock quote. Most brokerage companies use a subscription based system. If one workstation or trader registers a particular stock quote, then every time the tick or quote comes in, the trader gets an update on that stock quote. If numerous customers are requesting a stock quote at the same time, then the quote server will take some time to send the requested stock quotes to all the requesting customers. If the quote server spends more time delivering stock quotes, however, then the quote server must spend less time getting stock quotes. Thus, when the above-mentioned response time to the requesting customers takes too long, the quote server may miss some of the stock quotes sent by the field vender. As a result, investors may not have the most current stock quote information needed to make intelligent trading decisions. 
     Consequently, it would be desirable to provide an improved method to disseminate the information, e.g., deliver stock quotes, to investors in real-time. 
     SUMMARY OF THE INVENTION 
     In view of the foregoing, embodiments of the present invention provide an improved method to disseminate the information to investors in real-time. In accordance with an embodiment of the present invention, quote information from a provider is received by a quote server. In response to a quote request from a user to a contact server, the contact server requests the quote request from the quote server. The quote server then sends a respective quote according to the quote request to the contact server. In turn, the contact server disseminates the quote to the user. By having to send the requested quote information only once, the quote server is able to spend more time in receiving quote information and less time in distributing the quote information. A contact server enables the system to serve  1 , 000 – 2 , 000  people per combination of the quote and contact server. 
     All objects, features, and advantages of the present invention will become apparent in the following detailed written description. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The invention itself, as well as a preferred mode of use, further objects, and advantages thereof, will best be understood by reference to the following detailed description of an illustrative embodiment when read in conjunction with the accompanying drawings, wherein: 
         FIG. 1  is a block diagram of a stock quoting system according to the prior art; 
         FIG. 2  is a block diagram of a stock quoting system in accordance with an embodiment of the present invention; 
         FIG. 3  is a flow chart of a stock quoting system according to the prior art; and 
         FIG. 4  is a flow chart of a method for delivering stock quotes in real-time utilizing the stock quoting system in  FIG. 2 , in accordance with an embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION 
     The present invention will now be described more fully hereinafter with reference to the accompanying drawings, which illustrate embodiments of the invention. 
     Referring now to the drawings and in particular to  FIG. 1 , there is shown a block diagram of a stock quoting system according to the prior art. As shown, a stock quoting system  10  includes a quote server  13  and a database  14 . Generally, stock quotes are sent from a source of stock quote  11  to a field vender  12  and then to quote server  13 . Source of stock quote  11  are typically stock exchanges, such as the New York Stock Exchange, NASDAQ, etc. Field vender  12  is a trading vender such as Bloomberg or Comstock. Stock traders can request stock quotes from quote server via trading stations  15   a – 15   n . In response to a stock quote request, quote server  13  would send a stock quote to a corresponding one or more of trading stations  15   a – 15   n . Because stock quoting system  10  is a closed system, quote server  13  has to finish sending stock quotes to trading stations  15   a – 15   n  before quote server  13  can perform other important functions such as reading data from field vender  12 . In other words, if quote server  13  spends more time delivering stock quotes, then quote server  13  has to spend less time obtaining stock quotes. As a result, quote server  13  may miss a stock quote (or data packet) from field vender  12 . Because quote server  13  does not have the most current stock quote, database  14  could not be updated, and a trader would not have the most current stock quote information needed to make intelligent trading decisions. 
     With reference now to  FIG. 2 , there is shown a block diagram of a stock quoting system in accordance with a preferred embodiment of the present invention. As shown, a stock quoting system  20  includes a quote server  23 , a database  24  and a contact server  26 . Stock quotes are sent from a source of stock quote  21  to a field vender  22  and then to quote server  23 . Source of stock quote  21  can be any exchange that generates stock quotes similar to source of stock quote  11  depicted in  FIG. 1 . Field vender  22  parsers the information and multiplexes it to quote server  23  at a rate of approximately 1,000–2,000 stock quotes (or packets) per second. Quote server  23  can be any type of server capable of receiving and transmitting information, and can be located in a regional brokerage office such as TradeCast or Merrill Lynch. Quote server  23  is coupled to database  24  that keeps track of the history of each specific stock quote. If a quote for a particular stock is not in database  24 , quote server  23  will add the missing stock quote to database  24 . If the stock quote is already in database  24 , quote server  23  will update database  24  with the latest information. Stock traders can request stock quotes from contact server  26  via trading stations  25   a – 25   n . Contact server  26  may be, for example, a workstation, a mid-range computer or a mainframe computer. In addition, contact server  26  may be coupled to a network such as a local-area network (LAN) or a wide-area network (WAN). In response to a stock quote request, contact server  26  would send a stock quote to a corresponding one or more of trading stations  25   a – 25   n.    
     Referring now to  FIG. 4 , there is illustrated a flow chart of a method for delivering stock quotes in real-time utilizing stock quoting system  20 , in accordance with a preferred embodiment of the present invention. After data has been received by a quote server, as shown in block  31 , a determination is made by the quote server as to whether or not the received data is a valid packet, as depicted in block  32 . If the received data is a valid packet, the received data will be stored in a database coupled to the quote server, as shown in block  33 . Otherwise, the received data will be discarded or ignored. Then, the quote server checks to see if a contact server is requesting a particular stock quote, as shown in block  34 . If the contact server is requesting a stock quote, the quote server sends the stock quote to the contact server, as depicted in block  36 . The contact server may send the stock quote to all traders who have requested that particular stock quote. If no trader has made a stock quote request, then the contact server does not request any stock quote from the quote server. By comparison,  FIG. 3  illustrates a flowchart according to the prior art where hundreds of traders would request a stock quote whereby quote server  13  would have to send each trader the stock quote, shown in steps  34  and  35 . 
     As has been described, the present invention provides an improved method for delivering stock quotes in real-time. Because the quote server sends a stock quote to the contact server only when a stock quote request has been made from a trader via the contact server, the quote server is not burdened with the responsibility of delivering stock quotes for each stock quote request. As such, the quote server can dedicate more processing for receiving new stock quote information from a field vender. 
     It is also important to note that although the present invention has been described in the context of a fully functional computer system, those skilled in the art will appreciate that the mechanisms of the present invention are capable of being distributed as a program product in a variety of forms, and that the present invention applies equally regardless of the particular type of signal bearing media utilized to actually carry out the distribution. Examples of signal bearing media include, without limitation, recordable type media such as floppy disks or CD ROMs and transmission type media such as analog or digital communications links. 
     While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.