Research in Motion Corporation

Printeron Inc.

Kathy Pereira

Barry W Linkert

Salim Omar

Jie Zhu

Galang Vuong

David Paul Yach

Piotr Konrad Tysowski

Catherine M Phillips

Patrick Pidduck

Christopher Martin

Tim Lehan

Steven Spicer

Albert Hecht-Enns

A limited-bandwidth network electronic data communication server includes an electronic data transmission server and a network terminal in communication with the electronic data transmission server over a communications network. The electronic data transmission server includes a data receiver for receiving a request for transmission of an e-mail attachment to a network terminal over a communications network. The e-mail attachment includes content and data defining the presentation of the content. A data processing system is in communication with the data receiver for converting the e-mail attachment into a less memory-intensive data format. The data processing system is configured to perform the conversion by extracting the content from the e-mail attachment without the presentation data. A data transmitter is in communication with the data processing system for transmitting the extracted content to the network terminal over the communications network without the presentation data.

Limited-bandwidth electronic data communication system field of the invention

A method for synchronizing a first database including first data records with a second database including second data records. The method includes starting a synchronization session with an electronic device on which the second database resides, requesting the first data records from the first database, temporarily disconnecting the synchronization session while awaiting receipt of the first data records, receiving the first data records, and restarting and completing the synchronization session.

Method and apparatus for synchronizing of databases

A synchronization process, and associated apparatus, for placing database copies in match with one another by way of communications effectuated upon an air interface of a radio communication system. Hash functions are performed at a mobile node and at a network part upon mobile and network copies of database information. Comparison of the hash information formed therefrom provides a preliminary indication of whether the databases are in match with one another. If a determination is made that the databases are out of match, the data is compared, and the data is placed in match with one another responsive to such additional comparisons.

Apparatus, and associated method, for synchronizing databases connected by way of a radio air interface

Limited-bandwidth electronic data communication system

Apparatus, and an associated method, for facilitating synchronization of databases connected by way of a radio air interface. Changes to a data record embodied at the network part are detected by a detector. A mapping is performed by a mapper, and a synchronization request is generated by a synchronization request generator. The synchronization request is filtered by a filter, and converted into form to permit its efficient communication upon the radio air interface to a mobile node pursuant to a synchronization session.

Apparatus, and associated method, for facilitating synchronization of databases connected by way of a radio air interface

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Waterloo, Canada

Kathy Pereira