Patents by Inventor Herbert Wildfeuer
Herbert Wildfeuer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10743188Abstract: In one embodiment, a device determines locations of a plurality of transmitters relative to a particular wireless access point in a wireless network. One of the transmitters comprises a target client to which the particular wireless access point is to communicate. The device compares a plurality of beamforming patterns associated with the particular wireless access point to the determined locations. The device selects, based on the comparison, one of the beamforming patterns for use by the particular wireless access point to communicate with the target client. The device controls the particular wireless access point to use the selected beamforming pattern to communicate with the target client.Type: GrantFiled: June 25, 2019Date of Patent: August 11, 2020Assignee: Cisco Technology, Inc.Inventors: John George Apostolopoulos, Dan Tan, Mehdi Nikkhah, Xiaoqing Zhu, Herbert Wildfeuer, Rob Liston
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Publication number: 20200077275Abstract: In one embodiment, a device determines locations of a plurality of transmitters relative to a particular wireless access point in a wireless network. One of the transmitters comprises a target client to which the particular wireless access point is to communicate. The device compares a plurality of beamforming patterns associated with the particular wireless access point to the determined locations. The device selects, based on the comparison, one of the beamforming patterns for use by the particular wireless access point to communicate with the target client. The device controls the particular wireless access point to use the selected beamforming pattern to communicate with the target client.Type: ApplicationFiled: June 25, 2019Publication date: March 5, 2020Inventors: John George Apostolopoulos, Dan Tan, Mehdi Nikkhah, Xiaoqing Zhu, Herbert Wildfeuer, Rob Liston
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Patent number: 10382973Abstract: In one embodiment, a device determines locations of a plurality of transmitters relative to a particular wireless access point in a wireless network. One of the transmitters comprises a target client to which the particular wireless access point is to communicate. The device compares a plurality of beamforming patterns associated with the particular wireless access point to the determined locations. The device selects, based on the comparison, one of the beamforming patterns for use by the particular wireless access point to communicate with the target client. The device controls the particular wireless access point to use the selected beamforming pattern to communicate with the target client.Type: GrantFiled: August 31, 2018Date of Patent: August 13, 2019Assignee: Cisco Technology, Inc.Inventors: John George Apostolopoulos, Dan Tan, Mehdi Nikkhah, Xiaoqing Zhu, Herbert Wildfeuer, Rob Liston
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Patent number: 10333887Abstract: In one embodiment, a network device connected to an Internet Protocol (IP) network and a serial network scans an infrastructure of the serial network. Based on the scanning, the network device can determine one or more serial endpoints within the serial network infrastructure, and may then allocate an IP address to each of the one or more serial endpoints. The network device may then map received IP network traffic into serial protocol commands on the serial network for a destination serial endpoint having an allocated IP address corresponding to a destination IP address of the received IP network traffic, and may also bridge data present on the serial network from a sourcing serial endpoint into an IP message on the IP network with an indication of a corresponding allocated IP address of the sourcing serial endpoint, accordingly.Type: GrantFiled: August 15, 2016Date of Patent: June 25, 2019Assignee: Cisco Technology, Inc.Inventors: David A. Maluf, Raghuram S. Sudhaakar, John Burns, Jan Medved, Herbert Wildfeuer, Klement Sekera
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Publication number: 20180343326Abstract: In one embodiment, a device between a Controller Area Network (CAN)-based network and an Internet Protocol (IP)-based network receives a CAN message from a node in the CAN-based network. The CAN message comprises a CAN message identifier and a data field. The device determines an IP header based on the CAN message identifier and the CAN message. The device converts the data field of the CAN message into an IP message that includes the determined IP header. The device sends the IP message via the IP network to one or more eligible destinations for the IP message.Type: ApplicationFiled: May 26, 2017Publication date: November 29, 2018Inventors: Herbert Wildfeuer, Pradeep Kumar Kathail, Subhasri Dhesikan, Raghuram S. Sudhaakar
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Patent number: 10135738Abstract: Presented herein are techniques for application criteria-based path selection in a network. An application controller receives endpoint application criteria that specify end-to-end conditions that at least one network is to satisfy when forwarding the at least one packet flow. The application controller evaluates a plurality of different types of end-to-end network paths to determine whether one or more of the plurality of end-to-end network paths satisfies the endpoint application criteria.Type: GrantFiled: March 28, 2016Date of Patent: November 20, 2018Assignee: Cisco Technology, Inc.Inventors: James E. Coffman, Herbert Wildfeuer, Glen Lavers, Kenneth A. Morneault, Matthew J. Richards
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Patent number: 9917871Abstract: In one embodiment, a first device in a network sends a Session Traversal Utilities for Network Address Translation (STUN) binding request towards an endpoint device of a media session between the first and endpoint devices. The binding request includes one or more network attribute fields. The first device receives a binding response from an intermediate node between the first and endpoint devices in the network, in response to sending the binding request towards the endpoint device. The intermediate node inserted the one or more network attribute fields into the binding response. The received binding response includes one or more metrics for the media session in the one or more network attribute fields. The first device adjusts one or more bitrates of the media session based on the one or more metrics for the media session in the received binding response.Type: GrantFiled: April 5, 2016Date of Patent: March 13, 2018Assignee: Cisco Technology, Inc.Inventors: Jon M. Snyder, Pål-Erik Martinsen, Dan Tan, Herbert Wildfeuer, Daniel G. Wing
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Publication number: 20180048619Abstract: In one embodiment, a network device connected to an Internet Protocol (IP) network and a serial network scans an infrastructure of the serial network. Based on the scanning, the network device can determine one or more serial endpoints within the serial network infrastructure, and may then allocate an IP address to each of the one or more serial endpoints. The network device may then map received IP network traffic into serial protocol commands on the serial network for a destination serial endpoint having an allocated IP address corresponding to a destination IP address of the received IP network traffic, and may also bridge data present on the serial network from a sourcing serial endpoint into an IP message on the IP network with an indication of a corresponding allocated IP address of the sourcing serial endpoint, accordingly.Type: ApplicationFiled: August 15, 2016Publication date: February 15, 2018Inventors: David A. Maluf, Raghuram S. Sudhaakar, John Burns, Jan Medved, Herbert Wildfeuer, Klement Sekera
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Publication number: 20170289225Abstract: In one embodiment, a first device in a network sends a Session Traversal Utilities for Network Address Translation (STUN) binding request towards an endpoint device of a media session between the first and endpoint devices. The binding request includes one or more network attribute fields. The first device receives a binding response from an intermediate node between the first and endpoint devices in the network, in response to sending the binding request towards the endpoint device. The intermediate node inserted the one or more network attribute fields into the binding response. The received binding response includes one or more metrics for the media session in the one or more network attribute fields. The first device adjusts one or more bitrates of the media session based on the one or more metrics for the media session in the received binding response.Type: ApplicationFiled: April 5, 2016Publication date: October 5, 2017Inventors: Jon M. Snyder, Pål-Erik Martinsen, Dan Tan, Herbert Wildfeuer, Daniel G. Wing
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Publication number: 20170279726Abstract: Presented herein are techniques for application criteria-based path selection in a network. An application controller receives endpoint application criteria that specify end-to-end conditions that at least one network is to satisfy when forwarding the at least one packet flow. The application controller evaluates a plurality of different types of end-to-end network paths to determine whether one or more of the plurality of end-to-end network paths satisfies the endpoint application criteria.Type: ApplicationFiled: March 28, 2016Publication date: September 28, 2017Inventors: James E. Coffman, Herbert Wildfeuer, Glen Lavers, Kenneth A. Morneault, Matthew J. Richards
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Patent number: 8452591Abstract: A device comprising an audio information processor to receive at least one audio stream encoded according to a first protocol by a remote network processing device, the audio stream having associated comfort noise information to indicate a level of background noise available for presentation during silence periods associated with the audio stream, the audio information processor to decode the received audio stream according to the first protocol and to encode the decoded audio stream according to a second protocol, and a background noise translator to convert the comfort noise information received with the audio stream into a format compatible with the second protocol.Type: GrantFiled: April 11, 2008Date of Patent: May 28, 2013Assignee: Cisco Technology, Inc.Inventors: Herbert Wildfeuer, Robert Simon
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Patent number: 8238548Abstract: An echo canceller apparatus comprises a receive side attenuator coupled in a receive side signal path that is configured to couple from a conference call bridge to a caller; a convolution processor coupled to the receive side signal path at a convolution processor pick-off point; a double-talk detector coupled to the receive side signal path and to a sending side signal path that is configured to couple from the caller to the conference call bridge; and logic coupled to the receive side attenuator which when executed is responsive to a double-talk condition detected by the double-talk detector and operable to determine a level of echo canceled by the convolution processor, to determine an additional amount of attenuation to introduce, and to activate the receive side attenuator to introduce the additional attenuation.Type: GrantFiled: February 8, 2008Date of Patent: August 7, 2012Assignee: Cisco Technology, Inc.Inventors: James C. Frauenthal, Michael A. Ramalho, Gary Skrabutenas, Herbert Wildfeuer
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Publication number: 20090259462Abstract: A device comprising an audio information processor to receive at least one audio stream encoded according to a first protocol by a remote network processing device, the audio stream having associated comfort noise information to indicate a level of background noise available for presentation during silence periods associated with the audio stream, the audio information processor to decode the received audio stream according to the first protocol and to encode the decoded audio stream according to a second protocol, and a background noise translator to convert the comfort noise information received with the audio stream into a format compatible with the second protocol.Type: ApplicationFiled: April 11, 2008Publication date: October 15, 2009Applicant: CISCO TECHNOLOGY, INC.Inventors: Herbert Wildfeuer, Robert Simon
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Publication number: 20090202063Abstract: An echo canceller apparatus comprises a receive side attenuator coupled in a receive side signal path that is configured to couple from a conference call bridge to a caller; a convolution processor coupled to the receive side signal path at a convolution processor pick-off point; a double-talk detector coupled to the receive side signal path and to a sending side signal path that is configured to couple from the caller to the conference call bridge; and logic coupled to the receive side attenuator which when executed is responsive to a double-talk condition detected by the double-talk detector and operable to determine a level of echo canceled by the convolution processor, to determine an additional amount of attenuation to introduce, and to activate the receive side attenuator to introduce the additional attenuation.Type: ApplicationFiled: February 8, 2008Publication date: August 13, 2009Inventors: James C. Frauenthal, Michael A. Ramalho, Gary Skrabutenas, Herbert Wildfeuer
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Publication number: 20070121857Abstract: In one embodiment, one or more gateways sniff the voice channel during the voice mode. If it is determined that V.8bis signals are being initiated, then the gateway breaks these exchanges by suppressing such signaling, thereby avoiding the above-described detrimental effects. Modem relay communications then are allowed to proceed. Briefly, the method and apparatus involve monitoring a call during a voice mode phase for an initiating signal representative of the defined signaling, the monitoring being performed by a local gateway and, if such an initiating signal is detected during the monitoring, then suppressing such detected signaling in such manner that the signaling does not reach the remote gateway. Preferably, the monitoring is for an initiating signal characterized by a dual tone of defined frequency and duration of approximately 1375 Hz and 2002 Hz for a duration of approximately 400 ms or 285 ms, in agreement with the ITU-T Recommendation V.Type: ApplicationFiled: November 21, 2006Publication date: May 31, 2007Applicant: CISCO TECHNOLOGY, INC.Inventors: Mehryar Garakani, Herbert Wildfeuer, Gavin Jin, Chieh-Wen Tsai
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Publication number: 20060007916Abstract: Text is interleaved and transported along with media data over the same real-time Internet Protocol (IP) media transport session. A network processing device identifies text characters corresponding with text signaling. The identified text characters are formatted into text packets and sent over the same real-time IP media transport session used for real-time media transport. The media transport session can identify the sequence that the text characters are transmitted and can specify a maximum character transfer rate.Type: ApplicationFiled: November 3, 2004Publication date: January 12, 2006Inventors: Paul Jones, Rajesh Kumar, Mehryar Garakani, Herbert Wildfeuer
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Publication number: 20050168785Abstract: An improved method and system for connecting Super Group 3 fax machines over network gateways that operate using the un-enhanced T.38 protocol. With the present invention, the CM tone is suppressed. Thus a gateway that generates an AnsAm tone, will not receive a CM tone in response. The T.38 protocol does not specify what occurs if a CM tone is not received; however, it has been found that, in practice, existing fax machines fall back to V.21 mode if a CM tone is not received.Type: ApplicationFiled: February 14, 2005Publication date: August 4, 2005Inventors: Mehryar Garakani, Hanh Luong, Brooks Read, Steven White, Ilya Umansky, Herbert Wildfeuer
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Publication number: 20050068904Abstract: Managing a multicast conference call includes receiving signals at a local endpoint participating in a multicast conference call with remote endpoints. The signals include a local signal associated with the local endpoint and remote signals, where each remote signal is associated with a remote endpoint. Metric ratings are determined, where each metric rating reflects an importance of a signal. The metric ratings include a local metric rating corresponding to the local signal and remote metric ratings, where each remote metric rating corresponds to a remote signal. The local metric rating and the remote metric ratings are compared, and a subset of signals is selected according to the comparison.Type: ApplicationFiled: September 30, 2003Publication date: March 31, 2005Inventors: Herbert Wildfeuer, Chieh-Wen Tsai
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Publication number: 20050015514Abstract: A network device is disclosed. The network device includes a port to allow the device to communicate on a full bandwidth channel, a main processor to control reception and transmission of data and a compressor. The compressor identifies repeated fixed sequences in the data, and replaces repeated fixed sequences with an identifier sequence, a count of repetitions and the fixed sequence. The network device may have a decompressor instead of, or in addition to, the compressor that can decompress received data that is compressed.Type: ApplicationFiled: May 30, 2003Publication date: January 20, 2005Inventors: Mehryar Garakani, Herbert Wildfeuer, Prasad Miriyala, Henry Diep