Abstract:
The present invention relates generally to processing audio and video data. One claim recites a method of accessing content stored in a remote database. The method includes: receiving video or audio data; decoding an auxiliary machine-readable code from the video or audio data; deriving a fingerprint, which fingerprint is separate from the machine-readable code, from the video or audio data itself; providing user characteristics or an index to user characteristics; and by using the machine-readable code, fingerprint and user characteristics or information obtained with the index to user characteristics, accessing the content stored in the remote database. Of course, additional combinations and claims are provided as well.

Description:
RELATED APPLICATIONS 
     This application is a divisional of U.S. patent application Ser. No. 11/058,917 which is a continuation of U.S. patent application Ser. No. 09/915,824, filed Jul. 26, 2001 (now abandoned), which claims the benefit of U.S. Provisional Application No. 60/220,945, filed Jul. 26, 2000. Each of these patent documents is herein incorporated by reference. 
     U.S. patent application Ser. No. 11/058,917 is also a continuation-in-part of each of the following U.S. patent application Ser. Nos.: 
     Ser. No. 10/717,211, filed Nov. 18, 2003, which is a continuation of patent application Ser. No. 09/342,688, filed Jun. 29, 1999 (now U.S. Pat. No. 6,650,761). The Ser. No. 09/342,688 application is a continuation-in-part of U.S. patent application Ser. No. 09/314,648, filed May 19, 1999 (now U.S. Pat. No. 6,681,028); 
     Ser. No. 09/571,422 filed May 15, 2000 (now U.S. Pat. No. 6,947,571), which claims the benefit of U.S. Provisional Patent Application Nos. 60/158,015, filed. Oct. 6, 1999, 60/163,332, filed Nov. 3, 1999, and 60/164,619, filed Nov. 10, 1999. The Ser. No. 09/571,422 application is also a continuation-in-part of each of the following U.S. patent application Nos.: 
     Ser. No. 09/342,689, filed Jun. 29, 1999 (now U.S. Pat. No. 6,311,214), 
     Ser. No. 09/342,971, filed Jun. 29, 1999 (now abandoned), 
     Ser. No. 09/343,104, filed Jun. 29, 1999 (now abandoned), 
     Ser. No. 09/531,076, filed Mar. 18, 2000, 
     Ser. No. 09/547,664, filed Apr. 12, 2000 (now U.S. Pat. No. 7,206,820), and 
     Ser. No. 09/552,998, filed Apr. 13, 2000 (now abandoned); and 
     Ser. No. 09/636,102 filed Aug. 10, 2000 (now abandoned). 
    
    
     FIELD OF THE INVENTION 
     The present invention relates to electronic systems and more particularly to the use of collateral data and a data base of personal characteristics to provide relevant information to a user. 
     BACKGROUND OF THE INVENTION 
     Various techniques are known for embedding collateral information in images, in files of text, in audio information and in other types of digital information. Digital watermarking (which are a particular type of steganographic data encoding) are one way of imbedding collateral information in digital files. There are many types of digital watermarks. For example, prior application Ser. No. 09/127,502, filed Jul. 31, 1998, now published as WO0007356, (which is assigned to the assignee of the present invention) shows a technique by which very fine lines can be printed on a medium to slightly change the medium&#39;s apparent tint, while also conveying digital data. Co-pending application Ser. No. 09/074,034, filed May 6, 1998, now published as WO 9953428, details how the contours of printed imagery can be adjusted to convey digital data. Issued U.S. Pat. No. 5,850,481 details how the surface of paper or other media can be textured to convey optically-detectable binary data. Issued U.S. Pat. Nos. 5,862,260, 5,841,886 and 5,809,160 detail various techniques for steganographically encoding photographs and other imagery. There are a great man other patents and a large body of literature which describe various other watermarking and steganographic techniques. 
     The technology and science for collecting user preferences using the internet and other data gathering mechanisms is also well developed. For example U.S. Pat. Nos. 5,918,014 and 5,933,811 and PCT publication WO 00/38074 describe systems that collect data concerning users and which then provide to the users advertisements directed to what the system decides is their particular interests and preferences. As used herein the term “user characteristics” means any information about a user&#39;s characteristics or preferences such as the type of information discussed in the article “Privacy 2000 In Web We Trust” published in the magazine “PC World”, June 2000, pages 103 to 108. 
     Systems such as the system described in co-pending application Ser. No. 09/571,422 filed May 15, 2000, utilize collateral data stored in printed images to carry a URL (Universal Resource Locator) address (or a dynamic index to a database entry storing such addresses). When a user of the system directs a camera at an image containing the collateral data, the user&#39;s web browser is directed to a particular web site. 
     SUMMARY OF THE PRESENT INVENTION 
     The present invention provides a system where collateral information (in a file or image) is used together with information concerning a particular user&#39;s characteristics to direct a user to a particular web site. The site to which a user is directed is selected based both upon the original collateral information and based upon information from the data base of user characteristics. In one embodiment, a file or data stream includes collateral data that identifies the URL of a central web site. When a file containing the collateral data is transferred to a browser, the central web site is accessed and it interrogates a data base containing various information including user preferences. The output of the data base search is another URL that directs the browser that received the original collateral data to another web site which then sends information to the user. In an alternate embodiment, a user uses a hand held digital camera to gather information from images such as magazine covers or product boxes. The images contain digital watermarks that carry collateral data. The collateral data is used to interrogate either a local or a remote data base which contains information pertinent to the particular user&#39;s characteristics. The output from the data base is then presented to the user. Thus, the collateral data from the original images is transformed into information particularly pertinent to the particular user. 
    
    
     
       BRIEF DESCRIPTION OF THE FIGURES 
         FIG. 1  is an overall system diagram of a first embodiment of the invention. 
         FIG. 2  is a flow diagram of the operation of the system. 
         FIG. 3  is a system diagram of a second embodiment. 
         FIG. 4  illustrates another embodiment of the invention. 
     
    
    
     DETAILED DESCRIPTION 
     An overall system diagram of a first embodiment is shown in  FIG. 1 . The system includes a conventional Internet web site  101  and an Internet browser program  102  operated by a user (who is not shown in the Figure). It should be understood that when implemented on the Internet, the system would generally include many such web sites and many such browsers. The system also includes a central server  104  which includes data bases  104 A and  104 B. Finally the diagram shows a web site  105  which includes information of particular interest to the user of browser  102 . Note, in an internet implemented system there would be a relatively large number of web sites  105 , each having information for particular users that have particular sets on interest and characteristics. 
     The browser  102  includes a watermark reading plug in program. If a web page or a file is sent to browser  102  which contains a watermark, the watermark is detected and read by the watermark reading program in browser  102 . Co-pending application Ser. No. 09/571,422 filed May 15, 2000 which is incorporated herein by reference describes such a program. 
     The flow diagram in  FIG. 2  illustrates the operation of the system. The process starts when browser  102  requests a file from web site  101 . The file can be a text file, an audio file or an image file. The file stored on web site  101  includes collateral data. This data may be in the form of a watermark in an image or audio file or as meta data in any type of file. The simplest situation is if the requested web page contains a watermarked image. It should however be noted that the invention can work with other types of collateral data transferred from server  101  to browser  102 , such as for example, when audio data is transferred. 
     As indicated by blocks  202  and  203 , the file is sent to the browser and the browser extracts the collateral data from the file. If the data is in the form of a watermark in an image file or in audio data, the browser would utilize a plug-in which can read the watermark and extract the collateral data. The details of the watermark reading program per se are known in the art and are not part of the present invention. 
     The collateral data extracted by the watermark reading program includes the URL of central server  104  and an identifier of the file or image that contained the watermark. First data base  104 A is interrogated to find information concerning the organization that registered the particular watermark. This is similar to the process described in co-pending application Ser. No. 09/571,422 filed May 15, 2000. 
     Central server  104  also includes a second data base  104 B which is indexed according to Globally Unique Identifiers (GUIDs). These identifiers allow the system to track references that come from a particular browser  102  without obtaining or using the actual name or e-mail address of the user. Such Globally Unique Identifiers (GUIDs) are in widespread use by firms that provide advertisements on the World Wide Web. For example see an article in the magazine  PC World  June 2000, page 103 to 108 entitled “Privacy 2000 in Web We Trust”. The data base  104 B includes information relevant to each GUID. The information in data base  104 B is acquired in a conventional manner. 
     The data base  104 A and  104 B also includes a list or data base of alternate sites  105 . The data bases  104 A and  104 B include for each site listed, the characteristics of the users that the site owner would like to reach and the identifiers from watermarks. Thus when the collateral data in a particular image causer browser  102  to contact central server  104 , the central server  104  makes two matches. First the identifier in the watermark is matched to registered identifiers to identify which particular image or web page contained the watermark. Second, from the GUID the server can determine the characteristics of the user. These two sets of information are used to determine the alternative site to which the user is directed. 
     The following is a very simple example which illustrates the operation of the system. Assume that the GUIDs identify only three characteristics of users that are designated “characteristic one”, “characteristic two” and “characteristic three”. Also assume that the watermarks read by browser  102  have only three different identifiers designated Identifier A, Identifier B and Identifier C. The alternative site  105  to which the user would be directed would be determined by server  104  from the information in data bases  104 A and  104 B as shown by the following table. 
     
       
         
               
               
               
               
             
               
               
               
               
             
           
               
                   
                 TABLE 1 
               
               
                   
                   
               
               
                   
                 Characteristic 
                 Characteristic 
                 Characteristic 
               
               
                   
                 one 
                 Two 
                 three 
               
               
                   
                   
               
             
             
               
                   
               
             
          
           
               
                 Identifier A 
                 Site S1 
                 Site S4 
                 Site S7 
               
               
                 Identifier B 
                 Site S2 
                 Site S5 
                 Site S8 
               
               
                 Identifier C 
                 Site S3 
                 Site S6 
                 Site S9 
               
               
                   
               
             
          
         
       
     
     The point is that server  104  has available two sets of information. The first identifies the image or file from which the collateral data was obtained and the second is the characteristics of the user. These two bits of information can be combined as shown above to select an appropriate site (above identified as sites S 1  to S 9 ) to which the user should be directed. 
     It is specifically noted that in any practical situation there will be many more Identifiers and many more characteristics or more probably combinations of characteristics. Furthermore, many different combinations might point to the same web site. As shown above each different combination pints to a different web site S 1  to S 9 . 
     Finally as indicated by block  206  in  FIG. 2 , data from the selected alternate web site  105  is sent to the browser  102 . The net result of the process is that the user who requests a web page or file from web site  101  will also receive certain collateral data which may be in the form of a watermark in the web page or file. This collateral data results in a request to server  104  which using the GUID of browser  102  and information from the watermark, locates an appropriate alternate web site  105 . Information from the selected alternate web site  105  is then sent to browser  102 . 
     An alternate embodiment of the invention is shown in  FIG. 3 . This alternate embodiment of the invention utilizes some of the components from the Media Bridge technology commercially available from Digimarc Corporation, Tualatin Oreg. With the Media Bridge technology, one can capture a digital image and read a digital watermark which is included in the image. The digital image can be captured with a commercially available PC camera. 
     In the embodiment shown in  FIG. 3 , a PC camera  301 A located in a hand held device  301  captures images, which can, for example, be the front page of magazines  302 A to  302 X. The hand held device includes a watermark reading program  301 B and a data base  301 C that stores data concerning the user&#39;s personal preferences. The hand held device  301  also includes a wireless Internet connection which can connect to a web sites  303 . 
     Each of the magazine front page images  302 A to  302 X includes a digital watermark which specifies a particular URL. The camera  301 A reads the watermarks in the images,  302 A to  302 X, obtains the information from the watermark and contacts one of the web sites  303 A to  303 X. The particular web sites contacted depends upon the information read from the watermarks. Each web site includes an expanded index of the information in the associated magazine. This index is sent to handheld device  301 . The hand held device  301  compares the information in the expanded magazine indexes to the information in the data base  301 C and informs the user which particular magazine has articles which match the personal preferences stored in data base  301 C. 
     Thus a user can scan a rack of magazine covers with device  301 . Device  301  reads the URL specified by the watermark on each magazine cover and then obtains an index of the particular magazines from a remote data base. The index is compared to the users personal preferences stored in hand held device  301  and the user is informed as to which magazine matches the stored preferences. It is noted that the designations  302 A to  302 X and  303 A to  303 X is used to illustrate that the number of magazines and the number of associated web sites is an arbitrary number suited to a particular application. The designations are meant to illustrate that there is one web site  303  (or one web page) for each magazine cover  302 . 
     It is noted that as new issues of the various magazines appear, the information in web sites  303 A to  303 X change. Each magazine therefore has an identifier which directs the system to a particular web site. The web site will have the current information for that magazine. 
     The present embodiment goes to a different web site for each magazine index. It noted that the various magazine indexes could be stored as different web pages on a single web site. 
     In an alternate embodiment, the watermarks on the magazine images includes coded information about the content of the magazines. The hand held device can then compare the magazine content to the stored preferences and indicate a match without accessing a web site. In another alternate embodiment, the content can be stored in the hand held device and periodically synchronized with a remote source. 
     It should be specifically noted that while the foregoing specification focuses on applications employing digital watermarking, the present invention can alternatively employ other data encoding techniques, including 1D and 2D barcodes, magnetic ink character recognition (MICR), optical character recognition (OCR), optical mark recognition (OMR), radio frequency identification (RF/ID), UV/IR identification technologies, data glyphs, organic transistors, magnetic stripe, etc., depending on the particular application requirements. 
     Co-Pending application Ser. No. 09/571,422 filed May 15, 2000 describes a system that reads collateral data and which has a router and registration data base to determine an appropriate URL when a particular object is viewed. The content of application Ser. No. 09/571,422 filed May 15, 2000 is hereby incorporated herein by reference. The present invention can be applied as an extension of the system shown in application Ser. No. 09/571,422 filed May 15, 2000. 
       FIG. 4  illustrates another alternate embodiment of the present invention. With the system shown in  FIG. 4 , there is equipment  401  at a remote location connected to equipment  402  which is at a central location. A user operates an originating device  412  at the remote location. The originating device  412  includes a PC camera  412 A which can acquire an electronic image of a printed advertisement  429 . The originating device  412  includes a watermark reading program  412 B and an internet browser  412 C. 
     The collateral data read from the electronic image generated by camera  412 A is used to generate a URL which directs the browser  412 C to server  414  via the internet  432 . When server  414  receives a request from originating device  412 , it uses the GUID information to interrogate a data base  418  which contains information about users. The server  414  also interrogates a registration data base  417  which contains information relevant to the particular collateral data read from the object  429 . These two sets of information are combined as illustrated by the simple example in table 1 above. 
     The sever can therefore respond to a request from originating device  412  by directing the browser  412 C to a web site (not shown in  FIG. 4 ) which is determined by both the collateral data in the object  429  and the user&#39;s characteristics and preferences in data base  418 . 
     The content of data base  418  can be generated in any of the ways known in the art for obtaining information about particular users. It should be noted that as used herein the term “user characteristics” means any information about a user&#39;s characteristics, preferences, interests, patterns or habits. Furthermore, the term “user” in general means the person that operates or utilizes a particular terminal or system. 
     It is noted that in some embodiments, the system has two data bases, one of which has information relative to the user and one of which has information concerning the detected collateral data. While such embodiments have two data bases, it should be understood that these two data bases can be implemented as and considered to be a single data base. Thus, as used herein the term data base can be understood to mean a single data base or combination of multiple databases. 
     It should also be noted that the invention may be extended to other forms of media data such as audio and video data. For example, as a user listens to music or watches a video, digital watermarks imperceptibly embedded in the audio or video carry collateral data used to interrogate data bases and retrieve information pertinent to the particular listener or viewer. 
     Alternative implementations of the invention use fingerprints of the content, such as a hash of perceptually relevant features of the content, to derive a content identifier from which information particular to the user can be fetched and returned. While digital watermarks embed auxiliary data imperceptibly in the content by subtly modifying it, fingerprints are dynamically derived from the content and do not require embedding of auxiliary data. Both digital watermarks and fingerprints can be used in combination to look up related information and to find information particular to the user. 
     While the invention has been shown and described with respect to several different embodiments, it is noted that many other changes in form and detail can be made without departing from the sprit and scope to the invention.