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EPA-Patent auf Kompressionsanforderungen (MIME)
- To: swpat@ffii.org
- Subject: EPA-Patent auf Kompressionsanforderungen (MIME)
- From: PILCH Hartmut <phm@a2e.de>
- Date: Sat, 11 Nov 2000 16:22:10 +0100 (CET)
- cc: debate@fitug.de
- Comment: This message comes from the debate mailing list.
- Sender: owner-debate@fitug.de
EP0592062
Computer workstation with communications sub-system capable of data compression
IBM (US)
Unter den Hauptanspruch dieses Patents faellt m.E. schon der
MIME-Standard, der es ja Applikationen ermoeglicht, ein bestimmtes
Kompressionsverfahren anzuwaehlen, das dann vom Mail-Dienst verwendet
wird. Fast so albern wie das Rozmanith-Patent, mit dem Greg Aharonian
gerade fuer seine unbequemen Meinungsaeusserungen bestraft wird.
Claims
1. A computer workstation for connection into a network, said
workstation including application means and a communications
subsystem, whereby messages generated by the application means are
passed to the communications subsystem for transmission onto the
network,
characterised in that:
the application means includes means for adding information to the
message concerning how the message should be compressed;
and the communications subsystem includes means responsive to said
information for processing the message accordingly.
2. The computer workstation of claim 1, in which the information added
to the message is a callback function included in the application
means to compress the message, and the means responsive to the
information includes means for invoking the callback function.
3. The computer workstation of claim 2, in which the means for
invoking the callback function includes means for passing information
to the callback function to provide some indication of the
desirability of compressing the message, and the callback function
includes means for responding to this indication to decide whether or
not to compress the message.
4. The computer workstation of claim 3, wherein the indication
provided to the callback function is a time value within which the
compression should be performed, and the callback function includes
means for determining whether the message can be compressed within the
time value, and if not, returning the message to the communications
subsystem uncompressed.
5. The computer workstation of claim 1, wherein the communications
subsystem includes means for compressing the data according to one or
more different compression techniques, and the information added to
the message indicates which compression technique is most appropriate
for that message.
6. The computer workstation of any preceding claim, wherein the
communications subsystem places messages for transmission in a queue,
and the communications subsystem further includes means responsive to
the information added to messages for determining whether they are
amenable to data spoiling.
7. The computer workstation as claimed in claim 6, further comprising
means for determining whether a spoiler data packet associated with a
data stream has been enqueued for transmission over the network and
means responsive to said determination to create and initialise a
counter associated with said data stream.
8. The computer workstation as claimed in either of claims 6 or 7,
further comprising means for dequeuing and transmitting over the
network data packets according to the spoilability of said packets.
9. The computer workstation as claimed in any of claims 6 to 8,
further comprising means for invoking a time-out timer upon detection
of a data stream devoid of spoiler data packets.
10. The computer workstation as claimed in claim 9, further comprising
means, responsive to the expiration of said timer, for freeing
resources utilised by a counter associated with a data stream.
11. A method of operating a computer workstation connected into a
network, said workstation including application means and a
communications subsystem, whereby messages generated by the
application means are passed to the communications subsystem for
transmission onto the network,
characterised by:
the application means adding information to the message concerning how
the message should be compressed;
and the communications subsystem responding to said information and
processing the message accordingly.
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Data supplied from the esp@cenet database - l2