INVENTION ANALYSIS REPORT
ON PUBLISHED PATENT APPLICATION
1
General Information
AB.8
Filed on
12.06.2008
1.1
Patent Application No.
2375/KOLNP/2008
1.2
Published in the
Official Journal of The Indian Patent Office, New Delhi
No. 04/2009, dated 23.01.2009, Page No. 2885
1.3
Title of Invention
“SWITCHED HOT SWAP CONTROLLER”
Applicant’s name and
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
full address
SE-164 83 STOCKHOLM SWEDEN
1.5
International Application No.
PCT/SE2005/001728
Dated
15.11.2005
1.6
PCT/Convention No.
Priority Document No:
WO2005SE01728
Dated
15.11.2005
1.7
International Publication No.
WO 2007/058569
Dated
24.05.2007
2
Preliminary Analysis
1.4
On reading abstract/full text of the claimed invention, we would like to comment as
follows:
2.1.a
Category of Invention
Embedded systems
2.1.b
Subtype
Telecommunication
2.2.a
International Patent Classification
No. (Minimum 6 levels/digits)
H02H 9/00, G06F 13/40
US classification No.
2.2.b
361/93.9
(Minimum 6 levels/digits)
2.3
Name of priority country
N/A
2.4
Name of the Inventors / Applicant
REMNÅS, KJELL-ARNE; SANDER, SVERKER;
SKÖLD, CLAES-GÖRAN
2.5
Prior Art Search was carried out on
USPTO / WIPO / EPO / JPO
2.6
Keywords used
(minimum 5)
Patent Numbers
referred
US5973419, JP2007219696, US2003023802,
2.7
Brief about
Invention
The invention describes an electric circuit, a method and a computer program
for hot-swapping and electronic board in a telecommunication system.
2.8
Electronic circuit, electronic board, processing unit, capacitive load, discrete
transistor, driving circuit, rectifier circuit, low-ohmic source, diode circuit, transistor
circuit
US6153947, US6026458
The patent entitled “SWITCHED HOT SWAP CONTROLLER” in the area of
embedded systems with specific reference to telecommunications proposes a
software solution to a method and a computer program for hot-swapping and
electronic board in a telecommunication system.
2.9
Summary of 2.8
The main objective of the patent is to provide adding or removing electric
components into an existing computer to or telecommunication architecture
without having to perform a power shut-down of the whole architecture.
Basically the patent aims at increasing the current in the electric circuit is
controlled by a microcontroller switching a power transistor in a switching circuit
so as to gradually increase the capacitor voltage for the electronic board. The
current level is measured either in the microcontroller itself or in an external
current sense circuit and compared to a maximum current level.
2.10
Details of Invention/s prior to the date of filing application in India are given below :
Application No.
2.10.
1
US5973419
Publication date:
October 26,
1999
The most relevant patents/applications are discussed as under.
Kruppa Robert William et al. disclose the apparatus and method controls and
limits the flow of in-rush current and maintains a supply voltage to a peripheral
device during power surges. The apparatus and method essentially isolate and
limit in-rush current flow to an in-rush circuit comprising a capacitive load and
series resistor connected directly to the power bus at one end and to a
reference potential at the other end. A switching device is coupled to the series
resistor. A current sensing circuit is coupled to the series resistor. During initial
start-up or "hot plugging" of the device, a control circuit turns "off" the switching
device causing the load to be charged from the power bus through the resistive
device for a pre-selected time interval, after which the switching circuit is turned
"on" to bypass the resistive device and connect the load and the peripheral
device to the power bus.; The current sensing circuit detects when current flow
is out of the load at which time the sensing circuit send a discharge signal to
turn on the switching circuit and bypass the resistor which maintains the supply
voltage of the device during the power surge.
2.10.
2
2.11
JP2007219696
Publication date:
August 30, 2007
Matsumura Tadashi et al. discloses a controller which is provided with an I/O
control table in which distribution control information to determine to which CPU
an I/O request from a host should be distributed and state information showing
whether or not each CPU is operating are stored. Also, I/O processing
instruction lists are storing an I/O processing instruction during processing until
it completes are prepared for each CPU.; When the revision instruction of
firmware is made from the outside, the state information of the CPU as the
object of firmware revision in the I/O control table is updated to a non-operating
state, and the distribution control information is updated so that the distribution
of the I/O request to the CPU can not be performed, and when it is confirmed
that any I/O processing instruction stored in the I/O processing instruction list
has become absent, control to execute the revision of the firmware is
performed.
•
The invention relates to a method and a computer program for hotswapping and electronic board in a telecommunication system.
•
The prior art deals US5973419 with the invention relates to power
supplied buses for peripheral devices coupled to such systems in which inrush current is limited to such peripheral devices after power-up or "hot
plugging".
•
The prior art deals JP2007219696 with to achieve the firmware hot-swap
of a controller such as a disk controller, the firmware hot-swap of the
controller exerting little influence on a host being a high order device.
•
Prior arts are not having the concept of hot-swapping and electronic
board in a telecommunication system.
Prima-facie
observations
Please note:
“This is a preliminary analysis report based upon expert’s Prima-facie Observations/ study/ view/
judgment, which may vary from expert to expert. Experts’ views may not concur with/should not be
treated as the views of C-DAC/DIT. This is just a humble attempt to explain the invention and its
prior art in simple words out of an academic interest.
This report should not be used/relied upon for any commercial/legal/office action etc. You are
advised to obtain independent and separate advice/opinion from a legal expert/Patent Agent if you
wish to take/pursue any commercial/office decision/action, representation/opposition or other legal
actions with respect to this published application.
This preliminary analysis report is based on resources available in public domain such as published
patent applications and granted patents freely available/accessible/downloadable generally on
websites of USPTO/WIPO/EPO unless specified otherwise. This report is NOT based upon
documents filed at the Indian Patent Offices.”