Abstract: A method for transferring data between processing systems and systems for transferring data. A method in one example creates a first representation of a first digital media which is stored on a first digital processing system. The first representation is compared to a plurality of representations of a corresponding plurality of digital media. Typically, but not necessarily, the plurality of representations are stored on a second digital processing system and the first representation is transmitted to the second digital processing system. The first digital media is transmitted to the second digital processing system if the first representation does not match any of the plurality of representations.

Abstract: A method and apparatus transfer digital images on a network. A signature list is first examined wherein the signature list includes a unique signature for each of the digital images requested for transfer. The signature list is used to determine whether each of the digital images is present or missing. For each of the digital images that is determined missing, the digital image is then received. Updated information is also received pertaining to the each of the digital images that is determined present. Data integrity is checked to ensure that the each of the digital images was successfully transferred. Finally, the steps of receiving the digital images and checking data integrity are repeated for the each of the digital images that was unsuccessfully transferred.

Abstract: Methods and apparatuses for publishing a collection of digital media on a network. In one example of a method, a client digital processing system generates a collection of digital media and transmits collection information, which describes the collection of digital media, to a server digital processing system. From the collection information, a plurality of presentable media is automatically generated; each of these presentable media is capable of being presented to other client digital processing systems which are coupled to the network. In this one example, the network is operating according to a hypertext transfer protocol. In this one example, the client and server systems are programmed to interact together such that the presentable media is automatically generated.