Browse Prior Art Database

After Disconnection from Internet or Recovery from Error, Return to Uniform Resource Locator

IP.com Disclosure Number: IPCOM000119018D
Original Publication Date: 1997-Oct-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 2 page(s) / 72K

Publishing Venue

IBM

Related People

Berstis, V: AUTHOR

Abstract

While a web browser is navigating, the current Uniform Resource Locator (URL) is checkpointed in a file after it is successfully displayed. If a subsequent error occurs and the system restarts, the start-up procedure automatically points the browser back to the last URL which was checkpointed, effectively recovering to that last known good state.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

After Disconnection from Internet or Recovery from Error, Return
to Uniform Resource Locator

      While a web browser is navigating, the current Uniform Resource
Locator (URL) is checkpointed in a file after it is successfully
displayed.  If a subsequent error occurs and the system restarts, the
start-up procedure automatically points the browser back to the last
URL which was checkpointed, effectively recovering to that last known
good state.

      Web access devices targeted at the naive or inexperienced user
can easily intimidate the user with terminal error messages from
program flaws or network glitches.  This invention provides a means
of automatically restoring the user to the last known good URL when
such an error occurs.

      Typically, a browser will be running on a Transmission Control
Protocol/Internet Protocol (TCP/IP) stack on a given operating
system.  The browser uses the TCP/IP stack to access the network and
uses the operating system to display the pages of web information, as
well as calling other plugins (extensions to display special
information).  The user uses a pointing device such as a mouse to
navigate the web using links, which specify a URL, which is the
network address for a new page of information to display.  When the
user clicks a button over such a link, the browser initiates actions
to retrieve the associated data and display it.  During this
activity, a large amount of software is exercised, sometimes in
unpredictable orders, and sometimes using incorrect data.  Also,
hardware problems may manifest themselves during this activity (lost
phone connections, power outage, static noise changing bits in
circuits, intermittent circuit failures, etc.).  The result of any of
these problems usually results in a software or hardware "crash".

      Software or watchdog hardware may be in place to automatically
restart the system after such a crash.  However, the restart usually
brings the user...