Patents Assigned to Cisco Systems
  • Patent number: 11848912
    Abstract: A network security system implements connectivity policies of a network environment. The network security system may use a network topology mapping to implement connectivity policies, where the network topology mapping includes sets of security zones, security devices, and zone paths between the security zones via the one or more security devices. The network security system can generate a universal representation of a connectivity policy for the network environment using a universal syntax. Using the network topology mapping, the network security system can identify zone paths between the security zones for implementing the connectivity policy. The network security system can configure security devices along the zone paths in accordance with the connectivity policies. Configuring security devices may include converting some or all of the universal representation of the connectivity policy into a device-specific representation in a native syntax of the security device.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: December 19, 2023
    Assignee: Cisco Systems Inc.
    Inventors: Daniel Boris Kovenat, Dheepak Ramanujam, Michael Joel O'Connor
  • Patent number: 10938440
    Abstract: An apparatus comprises a frequency accumulator to produce a frequency ramp, and a symbol modulator to receive symbols and to add to the frequency ramp frequency offsets representative of the symbols, to produce a modulated frequency ramp for a modulated chirp. The apparatus includes a spreading factor controller to control a roll-over rate of the modulated frequency ramp responsive to spreading factor and frequency bandwidth control signals, to control a spreading factor and a frequency bandwidth of the modulated chirp. The apparatus includes a center frequency controller to control a center frequency of the modulated frequency ramp responsive to a center frequency control signal. The apparatus includes a phase accumulator to accumulate frequency samples of the modulated frequency ramp to produce phase samples corresponding to the modulated chirp, and a vector rotator to rotate the phase samples based on an input vector to produce a modulated chirp.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: March 2, 2021
    Assignee: Cisco Systems Canada Co.
    Inventors: Tung Trong Nguyen, Ha Hoang Nguyen
  • Publication number: 20150327028
    Abstract: Apparatus, methods and logic for vehicles to determine vehicle to vehicle (V2V) safety message transmission rates for transmitting V2V safety messages based on how frequently the vehicles actually need to exchange safety messages, including factors such as vehicle velocities, distances among vehicles, and on how quickly the inter-vehicle distances are closing up. The determined V2V safety message transmission rates are selectively dynamically adjusted in accordance with detected significant changes in one or more of the inter-vehicle distances or inter-vehicle speeds. To avoid needless frequent changes to the transmission rate, statistical modeling techniques including hypothesis testing and sequential change detection are selectively used to more accurately detect significant changes in inter-vehicle distances or inter-vehicle speeds that warrant a change to the message transmission rate.
    Type: Application
    Filed: May 9, 2014
    Publication date: November 12, 2015
    Applicant: Cisco Systems, Inc.
    Inventors: Tao Zhang, Helder Antunes, Chintan Patel, Mahbubul Alam
  • Publication number: 20150200957
    Abstract: The trustworthiness of vehicle-to-vehicle (V2V) messages received from one or more associated vehicles in the vicinity of a subject vehicle is determined autonomously by a false signal detection system of the subject vehicle. Physical evidence relating to the associated vehicles is collected, and a statistical model is used to perform an analysis of the collected data. A V2V message is received by the system from a first one of the associated vehicles and a trustworthiness level of the message is determined in accordance with a correlation between the received V2V message and the result of the analyzed physical data relating to the first associated vehicle. The correlation may be a comparison of data contained in the received V2V message relative to a result of a stochastic analysis of the physical data. The received V2V message may be any V2V safety message including Emergency Electronic Brake Light (EEBL) messages.
    Type: Application
    Filed: January 14, 2014
    Publication date: July 16, 2015
    Applicant: Cisco Systems, Inc.
    Inventors: Tao Zhang, Douglas Chan, Helder Antunes
  • Patent number: 9038035
    Abstract: The present invention generally relates to a method for describing network events in a service aware network (“SAN”). In addition, the present invention relates to software that performs the method and has a programming model containing protocol libraries, abstract protocol messages declarations, and network events. The method and software enable a user to define basic as well as complex network events in the application, presentation, session, transport and/or network layers of a communication model, which result in internet protocol (“IP”) level triggers or other triggers. Such triggers will result in actions which may be applicable in all layers of a communication model up to the highest layer. As a result, the method and software allow a user to describe a hierarchy of high level network events through a hierarchy of lower level events. In addition, a development system and an apparatus which utilizes the method and software are also provided.
    Type: Grant
    Filed: April 5, 2010
    Date of Patent: May 19, 2015
    Assignee: Cisco Systems Israel, Inc.
    Inventors: Yuval Shachar, Doron Shamia, Oren Ravoy
  • Patent number: 8875135
    Abstract: A load balancer or other network device in a server farm acts as a web services proxy and performs service orchestration among servers and other resources within the server farm. The load balancer receives an initial service request from a client and is able to optimize orchestration by assigning component operations of the service to multiple different servers. In this manner, a one-to-many allocation of resources can be mapped whereby a single client service request can result in multiple physical servers or other devices, processes or resources being used to handle the service request while maintaining a single back-end flow per multiple transactions.
    Type: Grant
    Filed: April 17, 2006
    Date of Patent: October 28, 2014
    Assignee: Cisco Systems, Inc.
    Inventor: Kevin Ma
  • Patent number: 8867709
    Abstract: A method and an apparatus for the identification of the mode of a telephony device in a network are provided. A call initiation signal is received from a mode-identifying telephony device. The call initiation signal is used to communicate with a mode-selecting telephony device. Thereafter, the mode at the mode-selecting telephony device is detected and an answer mode signal, including the information regarding the answering mode of the mode-selecting telephony device, is sent to the mode-identifying telephony device.
    Type: Grant
    Filed: January 3, 2006
    Date of Patent: October 21, 2014
    Assignee: Cisco Systems, Inc.
    Inventor: B. Raghavendra Rao
  • Patent number: 8762760
    Abstract: An apparatus consisting of a digital communication channel comprised of a multiplicity of lanes where data is striped across the lanes in a predefined sequence. Each lane has the ability to be powered down or powered up in response to the amount of data being held in a transmit buffer at one end of the communication channel. The method consists of monitoring the amount of data being held in the transmit buffer; making the decision of how many lanes are required based on the amount of data; sending signals to cause the required number of lanes to be powered down or powered up; and performing the required power down or power up action at the particular transmitter and receiver.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: June 24, 2014
    Assignees: Xilinx, Inc., Cisco Systems, Cortina Systems, Inc.
    Inventors: Farhad Shafai, Fredrik Olsson, Mark Andrew Gustlin
  • Patent number: 8697997
    Abstract: A cable has an integrated cable management system for organizing multiple cables. The body of the cable has a first mating surface with a first interlocking element disposed thereon and a second mating surface with a second interlocking element disposed thereon the second mating surface, where the first interlocking element is configured as a complementary interlocking element for the second interlocking element, so that multiple cables may be joined without the use of additional cable-organizing devices. The first interlocking element may include at least one coupling recess formed in the first mating surface and configured to engage with an interlocking element having the same configuration as the second interlocking element.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: April 15, 2014
    Assignee: Cisco Systems, Inc.
    Inventors: Stephen Thomas Kelly, Ariel Braunstein, Kyle Nathen Swen, Greg P. McNamara, Brian Patrick Bjelovuk
  • Patent number: 8363084
    Abstract: A method and system for correlating content with linear media. More particularly, but not exclusively, the method and system correlate synchronous content with linear media by linking the content to a portion of the linear media, and including creating content related to the linear media; identifying a portion of the linear media corrected to the content; and linking the content to the portion; wherein the content is not synchronized with the linear media and the content is created non-contemporaneously with creation of the linear media.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: January 29, 2013
    Assignee: Cisco Systems New Zealand Limited
    Inventors: Craig George Cockerton, Peter Philip Moodie, Patrick Mathias Kunz
  • Patent number: 8289361
    Abstract: Embodiments of the present invention provide for methods, devices and systems for setting up an agent shortcut operation to be activated at an electronic device in a network. The agent shortcut operation can be setup at an electronic device connected to a network by receiving a selection of an agent shortcut operation from a user on an agent setup device, and sending the selected agent shortcut operation through the network to the electronic device to be available for subsequent activation. The agent shortcut operation can be activated by sending an agent shortcut operation to the electronic device, receiving an activation signal from an agent activation device for the agent shortcut operation, and in response to the received activation signal, sending a signal to the electronic device to activate the agent shortcut operation.
    Type: Grant
    Filed: May 29, 2011
    Date of Patent: October 16, 2012
    Assignee: Cisco Systems International S.A.R.L.
    Inventor: Keith Kocho
  • Patent number: 8218458
    Abstract: This method and apparatus is used to process call control protocol messages and quality of service media streams from an internet protocol conferencing session. The status and attributes processed from call control protocol messages are combined with the quality of service information for the parties connecting to a conferencing session for display to users in real-time.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: July 10, 2012
    Assignee: Cisco Systems, Inc.
    Inventors: Peter Flynn, Choon Shim, Liehua Xie
  • Publication number: 20120066531
    Abstract: An apparatus consisting of a digital communication channel comprised of a multiplicity of lanes where data is striped across the lanes in a predefined sequence. Each lane has the ability to be powered down or powered up in response to the amount of data being held in a transmit buffer at one end of the communication channel. The method consists of monitoring the amount of data being held in the transmit buffer; making the decision of how many lanes are required based on the amount of data; sending signals to cause the required number of lanes to be powered down or powered up; and performing the required power down or power up action at the particular transmitter and receiver.
    Type: Application
    Filed: September 14, 2010
    Publication date: March 15, 2012
    Applicants: Sarance Technologies, Inc., Cortina Systems Inc., Cisco Systems, Inc.
    Inventors: Farhad Shafai, Fredrik Olsson, Mark Andrew Gustlin
  • Patent number: 8089974
    Abstract: Methods, apparatuses and systems facilitating location or containment of rogue or unauthorized access points on wireless computer network environments. Embodiments of the present invention support one to a plurality of rogue containment methodologies. A first rogue containment type involves identification of the physical connection of the rogue access point to the wired network infrastructure and, thus, allows for disabling of that physical connection to contain the rogue access point. Other rogue containment methods involve wireless techniques for containing the effect of rogue access points. In some embodiments, the present invention provides methods, apparatuses and systems facilitating network location of rogue access points to determine whether one or more rogue containment methodologies should be applied. As discussed below, the rogue location and containment functionality described herein can be applied to a wide variety of wireless network system architectures.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: January 3, 2012
    Assignee: Cisco Systems, Inc.
    Inventors: Patrice R. Calhoun, Robert J. Friday, Robert B. O'Hara, Jr., Brett Galloway, David Anthony Frascone, Paul F. Dietrich, Sudhir Kumar Jain
  • Patent number: 8027459
    Abstract: A system and method for servicing a caller at a contact center includes providing self-service menu options to the caller through an automated system, and determining a total time spent by the caller in the automated system. If the caller's attempts at self-service are unsuccessful, the caller is transferred out of the automated system and into a position of a wait queue, the position of the caller in the wait queue being determined based on a credit for the total time spent by the caller in the automated system. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
    Type: Grant
    Filed: May 16, 2005
    Date of Patent: September 27, 2011
    Assignee: Cisco Systems, Inc.
    Inventors: Johnny Lee, Fadi R. Jabbour, David C. Lee
  • Patent number: 7966021
    Abstract: A wireless node location mechanism that employs a differential signal strength metric to reduce the errors caused by variations in wireless node transmit power, errors in signal strength detection, and/or direction-dependent path loss. As opposed to using the absolute signal strength or power of an RF signal transmitted by a wireless node, implementations of the location mechanism compare the differences between signal strength values detected at various pairs of radio receivers to corresponding differences characterized in a model of the RF environment. One implementation searches for the locations in the model between each pair of radio receivers where their signal strength is different by an observed amount.
    Type: Grant
    Filed: September 12, 2007
    Date of Patent: June 21, 2011
    Assignee: Cisco Systems, Inc.
    Inventors: Paul F. Dietrich, Gregg Scott Davi
  • Patent number: 7941548
    Abstract: Methods, apparatuses and systems directed to preventing unauthorized access to internal network addresses transmitted across wireless networks. According to the invention, mobile stations are assigned virtual client network addresses that are used as the outer network addresses in a Virtual Private Network (VPN) infrastructure, as well as unique internal network addresses used as the inner network addresses. In one implementation, the virtual client network addresses have little to no relation to the internal network addressing scheme implemented on the network domain. In one implementation, all clients or mobile stations are assigned the same virtual client network address. A translation layer, in one implementation, intermediates the VPN session between the mobile stations and a VPN server to translate the virtual client network addresses to the internal network addresses based on the medium access control (MAC) address corresponding to the mobile stations.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: May 10, 2011
    Assignee: Cisco Systems, Inc.
    Inventors: Robert W. Tashjian, Sumit Vakil, Jing Wang
  • Patent number: D662496
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: June 26, 2012
    Assignees: Cisco Technology, Inc., Cisco Systems, Inc.
    Inventors: William Jeffrey Lewis, Chi-Hsiang Kao, Chih-Ling Lin, Wen-Pin Chen, Chien-Ju Huang
  • Patent number: D686198
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: July 16, 2013
    Assignee: Cisco Systems, Inc.
    Inventors: William Jeffrey Lewis, Chi-Hsiang Kao, Chih-Ling Lin, Wen-Pin Chen, Chien-Ju Huang
  • Patent number: D686207
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: July 16, 2013
    Assignee: Cisco Systems, Inc.
    Inventors: William Jeffrey Lewis, Chi-Hsiang Kao, Chih-Ling Lin, Wen-Pin Chen, Chien-Ju Huang