Update checking and synchronization for link and offline data

• US 8,065,673 B2
• Filed: 06/01/2004
• Issued: 11/22/2011
• Est. Priority Date: 12/06/1996
• Status: Expired due to Fees

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Ahmed, Mohsin, Endres, Raymond Edward, Martineau, Teresa, Snapper, Erik Jon, D'Souza, David J., Mitchell, Darren, Ellison-Taylor, Ian Michael, Nawaz, Sabina, Shyam, Bharat
• Primary Examiner(s): Dam; Tuan
• Assistant Examiner(s): Wei; Zheng
• Application Number:
  US10/858,552
• Publication Number:
  US 20040221289A1
• Time in Patent Office: 2,730 Days
• Field of Search: None
• US Class Current: 717/173
• CPC Class Codes: G06F 16/958 Organisation or management of web site content, e.g. publishing, maintaining pages or automatic linking
• CPC Class Codes: G06F 2209/543 Local
• CPC Class Codes: G06F 8/60 Software deployment
• CPC Class Codes: G06F 9/485 Task life-cycle, e.g. stopping, restarting, resuming execution G06F9/4881 takes precedence
• CPC Class Codes: G06F 9/542 Event management; Broadcasting; Multicasting; Notifications
• CPC Class Codes: H04L 67/1095 Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
• CPC Class Codes: Y10S 707/99933 Query processing, i.e. searching

Abstract

A computer system includes an object oriented framework that provides a set of application integration interfaces that support programmatic updating operations for maintaining locally stored copies of resources such as hypertext document pages from remote servers on a computer network. The updating operations continually check for updates to the data at the remote server and download updated versions of the resources to maintain concurrency of the locally stored copy. The updating operations are performed while a connection to the remote network is left idle, to maximize usage of on-line connection time. The updating operations also can be programmatically scheduled by a client program of the updating operations. The updating operations include updating the contents of a folder or directory in a local file system as specified in a file at a remote server on the network, and providing automatically updating and populating groups of sites or document pages organized by category.

Claims

1. A method comprising:

displaying by a local computing device, user selectable options related to maintaining copies of documents stored on a storage media of a remote computing device on a storage media of the local computing device, wherein the copies of the documents stored on the local computing device are referenced by one or more selectable links presented by the local computing device, the selectable links comprising a Uniform Resource Locator (URL) and a plurality of off-line reading properties, the plurality of off-line reading properties comprising;

an update checking property,

a local caching property,

a number of levels deep property, and

a download dependencies property;

in response to a user selecting one or more documents stored on the remote computing device and setting the update checking property, scheduling an update check of the documents stored on the remote computing device, wherein the update check comprises;

retrieving a listing of properties associated with a particular document of the one or more documents stored on the remote computing device;

determining if the listing of properties describes differences between the particular document stored on the remote computing device and a corresponding copy of the particular document stored on the local computing device;

responsive to the listing of properties not describing a difference or being unavailable, calculating a Cyclical Redundancy Check (CRC) checksum for the particular document stored on the remote computing device;

determining if the particular document stored on the remote computing device is different than the copy of the particular document stored on the local computing device using the listing of properties and the CRC checksum;

responsive to determining that the particular document stored on the remote computing device has changed, storing on a storage medium associated with the local computing device, a copy of the particular document stored on the remote computing device;

accepting user input specifying that the update check should be performed when a network connection on the local computing device is determined to be idle, wherein the update check occurs when the network connection has been idle longer than an idle time threshold interval, wherein documents on the remote computing device that have short expected durations of download time are copied at a beginning of an idle period and documents on the remote computing device that have long expected durations of download time are copied after the idle period has exceeded a predefined idle time threshold interval; and

responsive to an affirmative value of the download dependencies property, downloading from the remote computing device and storing on a storage medium associated with the local computing device, a copy of resources related to the particular document stored on the remote computing device.

2. The method of claim 1, wherein scheduling an update check comprises accepting user input specifying a recurring date and time for performing the update check.

3. The method of claim 1, wherein the locally stored copies of the one or more selected documents on the remote computing device are stored in a smart folder, wherein the locally stored copies of the one or more selected documents in the smart folder are specified by entries in a web collections file located on a remote server, and wherein the determining if the particular document stored on the remote computing device is different than the copy of the particular document stored on the local computing device comprises comparing the entries in the web collections file with the locally stored copies in the smart folder.

4. A method comprising:

identifying one or more Internet shortcuts maintained on a local computing device, each particular Internet shortcut comprising a Uniform Resource Locator (URL) and a plurality of off-line reading properties, the plurality of off-line reading properties comprising;

an update checking property having a Boolean value,

a local caching property having a Boolean value,

a number of levels deep property having an integer value,

a download dependencies property having an Boolean value, and

a download size limit property having an integer value;

responsive to an affirmative value of the update checking property, scheduling an update check of a remote resource available from a remote computing device, the remote resource being identified by the URL associated with the Internet shortcut associated with the update checking property;

responsive to an affirmative value of the local caching property, determining if the remote resource identified by the URL is different from a copy of the remote resource being stored on a storage media associated with the local computing device;

responsive to an affirmative result of the determining, downloading the remote resource to a storage media associated with the local computing device,

wherein the downloading is limited to occurring when application software on the local computing device has not transmitted data to, or received data from, a network application programming interface for longer than an idle time threshold interval,

wherein the idle time threshold interval is based on a size of the remote resource to be downloaded and a bandwidth of the network connection, wherein the downloading is initiated at a beginning of an idle period when the remote resource has a short expected duration of download time and wherein the downloading is initiated after the idle period has exceeded a predefined duration of the idle time threshold interval when the remote resource has a long expected duration of download time; and

removing from the local computing device, copies of remote resources that are no longer available from the remote computing device from which they were downloaded.

5. The method of claim 4, wherein each identified Internet shortcut comprises a Uniform Resource Locator (URL) referencing the remote resource, wherein each identified Internet shortcut is stored in a shortcuts folder, and wherein the copy of the remote resource stored on the local computing device is stored in an Internet cache.

6. The method of claim 4 further comprising receiving a user input scheduling a time for performing the downloading, wherein the downloading occurs automatically at the scheduled time.

7. The method of claim 4, wherein the remote resource comprises an HyperText Markup Language (HTML) document and related dependencies.

8. The method of claim 4 further comprising updating status properties of each identified Internet shortcut, wherein the status properties comprise a last visited date indicating when the Internet shortcut was most recently checked for updates and a last updated date indicating when the resource referenced by the Internet shortcut was most recently updated.

9. The method of claim 4 further comprising:

a down load dependencies property, and downloading and caching copies of resources related to the one or more remote resources in accordance with the down load dependencies property.

10. A method comprising:

identifying by a client computing device one or more local folders stored on a storage media associated with the client computing device, wherein the one or more local folders are associated with a specification file located on a remote server,

wherein the specification file comprises a plurality of entries, each particular entry of the plurality of entries comprising one or more Internet shortcut entries,

wherein each Internet shortcut entry comprises a Uniform Resource Locator (URL), an associated local name for the Internet shortcut, and an off-line reading property comprising an update checking property, a local caching property, and a download dependencies property;

scheduling an update check of the plurality of entries in the specification file if the update checking property is set, the update check comprising;

determining whether or not resources referenced by each particular entry in the specification file have changed; and

responsive to an affirmative result of the determining and responsive to an affirmative value of the local caching property, updating the contents of the one or more local folders with the resources referenced by each particular entry, wherein the updating occurs when a connection to a network application programming interface has been idle longer than an idle time threshold interval, wherein the updating is initiated at a beginning of an idle period for resources with short expected durations of download time and the updating is initiated after the idle period has exceeded a predefined duration of the idle time threshold interval for resources with long expected durations of download time; and

responsive to an affirmative value of the download dependencies property, downloading and caching copies of additional resources subordinately related to each of the resources referenced by each particular entry in the specification file.

11. The method of claim 10, wherein the identifying one or more local folders comprises selecting the one or more local folders based on corresponding entries in a local database for which a property has been set.

12. The method of claim 10, wherein the entries in the specification file comprise one or more Uniform Resource Locator (URL) entries, wherein each URL entry references a file on the remote server and an associated local file name for use when locally storing the file.

13. The method of claim 10, wherein the plurality of entries in the specification file comprise one or more cache only entries, wherein each cache only entry comprises a Uniform Resource Locator (URL), and wherein the updating of the one or more cache only entries in the specification file comprises downloading updates to a local cache folder.

14. The method of claim 10, wherein the idle time threshold interval is based on the size of updates to be downloaded and bandwidth available from a network connection associated with the network application programming interface.

15. The method of claim 10 further comprising:

receiving a user input scheduling a time for performing the updating, wherein the updating occurs automatically at the scheduled time.