Patents by Inventor Herbert M. Wildfeuer
Herbert M. 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: 11984947Abstract: Techniques for improved wireless reliability are provided. It is determined that a client device is at least one of an augmented reality (AR) or a virtual reality (VR) device. A default set of retry parameters and a second set of retry parameters are determined, where the second set of retry parameters are more robust than the default set of retry parameters. Data is transmitted to the client device using the second set of retry parameters.Type: GrantFiled: April 25, 2023Date of Patent: May 14, 2024Assignee: Cisco Technology, Inc.Inventors: Wai-Tian Tan, Robert E. Liston, Herbert M. Wildfeuer
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Publication number: 20230261703Abstract: Techniques for improved wireless reliability are provided. It is determined that a client device is at least one of an augmented reality (AR) or a virtual reality (VR) device. A default set of retry parameters and a second set of retry parameters are determined, where the second set of retry parameters are more robust than the default set of retry parameters. Data is transmitted to the client device using the second set of retry parameters.Type: ApplicationFiled: April 25, 2023Publication date: August 17, 2023Inventors: Wai-Tian TAN, Robert E. LISTON, Herbert M. WILDFEUER
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Patent number: 11652513Abstract: Techniques for improved wireless reliability are provided. Data is transmitted to a client device using a first set of retry parameters. It is determined that the client device is an augmented reality (AR) or virtual reality (VR) device, and a second set of retry parameters is determined, where the second set of retry parameters are more robust than the first set of retry parameters. Data is transmitted to the client device using the second set of retry parameters.Type: GrantFiled: August 17, 2021Date of Patent: May 16, 2023Assignee: Cisco Technology, Inc.Inventors: Wai-Tian Tan, Robert E. Liston, Herbert M. Wildfeuer
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Publication number: 20230054643Abstract: Techniques for improved wireless reliability are provided. Data is transmitted to a client device using a first set of retry parameters. It is determined that the client device is an augmented reality (AR) or virtual reality (VR) device, and a second set of retry parameters is determined, where the second set of retry parameters are more robust than the first set of retry parameters. Data is transmitted to the client device using the second set of retry parameters.Type: ApplicationFiled: August 17, 2021Publication date: February 23, 2023Inventors: Wai-Tian Tan, Robert E. Liston, Herbert M. Wildfeuer
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Patent number: 9253237Abstract: A STUN message is received at a router device in a network from a client device in the network along a network path. The STUN message is evaluated for information that indicates to the router device to modify media that is subsequently sent along the network path. If the evaluating indicates that the router device is to modify the media, the media is modified in accordance with information in the STUN message that indicates attributes of the network.Type: GrantFiled: January 8, 2013Date of Patent: February 2, 2016Assignee: Cisco Technology, Inc.Inventors: Daniel G. Wing, Pål-Erik S. Martinsen, Herbert M. Wildfeuer, Jan Wegger, Geir Sandbakken, Greg Hakonsen
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Patent number: 8891743Abstract: In one implementation, a method for implementing gain control enhancement for modulated communications includes establishing a communication session between a first endpoint and a second endpoint. The communication session involves forwarding a call signal using an initial gain level until a state transition is detected in the communication session at a digital signal processor. The detection may occur in a transmitting gateway associated with the first endpoint or a receiving gateway associated with the second endpoint. The state transition indicates modulated communications, which may include fax, modem, or text telephony. For example, communication session may be fax over IP (FoIP). The call signal is forwarded using an adjusted gain level based on the state transition. The adjusted gain level may be selected to avoid clipping in the call signal.Type: GrantFiled: October 4, 2011Date of Patent: November 18, 2014Assignee: Cisco Technology, Inc.Inventors: M. David Hanes, Gonzalo A. Salgueiro, Herbert M. Wildfeuer, Brooks Stevens Read
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Patent number: 8760490Abstract: A rate adaptive video conference bridge and related techniques are provided. At a video conference bridge, a source video stream is received from a source endpoint device in a network. The source video stream is encoded using a first encoder unit and second encoder unit to generate respective first and second encoded video streams. A determination is made whether to decrease or increase a bit rate of the source video stream based on network condition information. If the bit rate is to be decreased, the first encoder unit is instructed to send the first encoded video stream to a destination endpoint device. If the bit rate is to be increased, the second encoder unit is instructed to send the second encoded video stream to the destination endpoint device.Type: GrantFiled: November 30, 2011Date of Patent: June 24, 2014Assignee: Cisco Technology, Inc.Inventors: Duanpei Wu, Jing Li, Shih-cheng Stan Yang, Herbert M. Wildfeuer, Anand Oswal
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Patent number: 8681784Abstract: 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. 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.8bis (standard) adopted by the International Telecommunication Union.Type: GrantFiled: November 21, 2006Date of Patent: March 25, 2014Assignee: Cisco Technology, Inc.Inventors: Mehryar Khalili Garakani, Herbert M. Wildfeuer, Gavin Jin, Chieh-Wen Tsai
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Publication number: 20140006639Abstract: A STUN message is received at a router device in a network from a client device in the network along a network path. The STUN message is evaluated for information that indicates to the router device to modify media that is subsequently sent along the network path. If the evaluating indicates that the router device is to modify the media, the media is modified in accordance with information in the STUN message that indicates attributes of the network.Type: ApplicationFiled: January 8, 2013Publication date: January 2, 2014Applicant: CISCO TECHNOLOGY, INC.Inventors: Daniel G. Wing, Pål-Erik S. Martinsen, Herbert M. Wildfeuer, Jan Wegger, Geir Sandbakken, Greg Hakonsen
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Publication number: 20130195262Abstract: A method, apparatus, and logic (encoded within a computer-readable tangible storage media) are provided for detecting, at an intermediate device, a presence of a delay for a fax communication between a source device and a destination device in a network. The delay for the fax communication is sufficient to produce a failure of a corresponding fax operation. The intermediate device includes a buffer to receive packets and is disposed in the network between the source and destination devices. A first time value of the buffer is adjusted at the intermediate device in response to detection of the delay to modify the delay to be within a range enabling the corresponding fax operation to be performed.Type: ApplicationFiled: January 31, 2012Publication date: August 1, 2013Applicant: CISCO TECHNOLOGY, INC.Inventors: M. David Hanes, Gonzalo A. Salgueiro, Herbert M. Wildfeuer, Michael Whitley
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Publication number: 20130135427Abstract: A rate adaptive video conference bridge and related techniques are provided. At a video conference bridge, a source video stream is received from a source endpoint device in a network. The source video stream is encoded using a first encoder unit and second encoder unit to generate respective first and second encoded video streams. A determination is made whether to decrease or increase a bit rate of the source video stream based on network condition information. If the bit rate is to be decreased, the first encoder unit is instructed to send the first encoded video stream to a destination endpoint device. If the bit rate is to be increased, the second encoder unit is instructed to send the second encoded video stream to the destination endpoint device.Type: ApplicationFiled: November 30, 2011Publication date: May 30, 2013Applicant: CISCO TECHNOLOGY, INC.Inventors: Duanpei Wu, Jing Li, Shih-cheng Stan Yang, Herbert M. Wildfeuer, Anand Oswal
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Publication number: 20130083909Abstract: In one implementation, a method for implementing gain control enhancement for modulated communications includes establishing a communication session between a first endpoint and a second endpoint. The communication session involves forwarding a call signal using an initial gain level until a state transition is detected in the communication session at a digital signal processor. The detection may occur in a transmitting gateway associated with the first endpoint or a receiving gateway associated with the second endpoint. The state transition indicates modulated communications, which may include fax, modem, or text telephony. For example, communication session may be fax over IP (FoIP). The call signal is forwarded using an adjusted gain level based on the state transition. The adjusted gain level may be selected to avoid clipping in the call signal.Type: ApplicationFiled: October 4, 2011Publication date: April 4, 2013Applicant: Cisco Technology, Inc.Inventors: M. David Hanes, Gonzalo A. Salgueiro, Herbert M. Wildfeuer
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Patent number: 8379077Abstract: Techniques are provided for managing display layouts for a continuous presence video conference. Each display layout has a fixed number of positions, and one of the display layouts has a maximum number of positions for display to participants in the video conference. The display layouts comprise video display positions for participants in a video conference. When the number of participants is greater than a threshold, one of the positions in that layout is used as a shared position assigned to a video stream of participants not assigned to fixed positions in that layout. The shared position is used in a scanning manner such that video streams of participants not assigned to fixed positions in the layouts are classified as scanning streams and are displayed in the non-fixed (shared) position over a predetermined time interval.Type: GrantFiled: November 24, 2010Date of Patent: February 19, 2013Assignee: Cisco Technology, Inc.Inventors: Duanpei Wu, Herbert M. Wildfeuer
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Publication number: 20120127262Abstract: Techniques are provided for managing display layouts for a continuous presence video conference. Each display layout has a fixed number of positions, and one of the display layouts has a maximum number of positions for display to participants in the video conference. The display layouts comprise video display positions for participants in a video conference. When the number of participants is greater than a threshold, one of the positions in that layout is used as a shared position assigned to a video stream of participants not assigned to fixed positions in that layout. The shared position is used in a scanning manner such that video streams of participants not assigned to fixed positions in the layouts are classified as scanning streams and are displayed in the non-fixed (shared) position over a predetermined time interval.Type: ApplicationFiled: November 24, 2010Publication date: May 24, 2012Applicant: CISCO TECHNOLOGY, INC.Inventors: Duanpei Wu, Herbert M. Wildfeuer
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Patent number: 7715431Abstract: The invented method and apparatus include a transport mechanism for transporting a non-V.42, e.g. a V.14 or synchronous modem, data stream in a modem relay connection utilizing the standard V.14 raw or character mode, the transport mechanism including a rate-control mechanism for substantially speed-matching the end-to-end flow of data. Preferably, speed-matching is based on a calculated effective data rate—which takes into account various character and link framing and compression overhead—rather than a physical layer rate. Rate-control methods include the use of receive not ready (RNR) to control data flow in a V.42 leg of a mixed non-V.42 and V.42 connection, a single leaky bucket technique and effective data rate-matching. Also proposed is a lossless compression mechanism (e.g. run-length encoding (RLE)) for encoding a data bit stream into modem relay packets. An auto-detection method on the non-V.Type: GrantFiled: October 16, 2002Date of Patent: May 11, 2010Assignee: Cisco Technology, Inc.Inventors: Mehryar Khalili Garakani, Herbert M. Wildfeuer
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Patent number: 7639403Abstract: 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: GrantFiled: February 14, 2005Date of Patent: December 29, 2009Assignee: Cisco Technology, Inc.Inventors: Mehryar Khalili Garakani, Hanh Luong, Brooks S. Read, Steven J. White, Ilya Umansky, Herbert M. Wildfeuer
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Patent number: 7543063Abstract: A modem data aggregating gateway that supports modem relay functionality for permitting reliable switching of modem traffic between a VoIP network and a data packet switch Internet Protocol (IP) network, s.a. the Internet. The modem relay aggregator may receive modem data encapsulated as Voice over IP (VoIP) data packets in accordance with a Simple Reliable Protocol Transport (SRPT) mechanism. The packet data may be error corrected and/or decompressed before being repackaged for forwarding to the ultimate destination. In the event that the destination is itself an IP device, the modem relay aggregator may forward the packets directly over the IP network. As a result, if the destination of a modem call is an IP device (such as a Web site or other Internet-enabled device) the technique eliminates two points from a processing path in which digital signal processing (DSPs) would otherwise have to perform modem protocol processing. Otherwise, minimal modem reformatting can be performed at the aggregation point.Type: GrantFiled: May 10, 2002Date of Patent: June 2, 2009Assignee: CISCO Technology, Inc.Inventors: Vincent T. Grove, Herbert M. Wildfeuer, Mehryar Khalili Garakani, Bruce D. Juhlin, Scott Anthony Boynton
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Publication number: 20090135810Abstract: A modem data aggregating gateway that supports modem relay functionality for permitting reliable switching of modem traffic between a VoIP network and a data packet switch Internet Protocol (IP) network, s.a. the Internet. The modem relay aggregator may receive modem data encapsulated as Voice over IP (VoIP) data packets in accordance with a Simple Packet Relay Transport (SPRT) mechanism. The packet data may be error corrected and/or decompressed before being repackaged for forwarding to the ultimate destination. In the event that the destination is itself an IP device, the modem relay aggregator may forward the packets directly over the IP network. As a result, if the destination of a modem call is an IP device (such as a Web site or other Internet-enabled device) the technique eliminates two points from a processing path in which digital signal processing (DSPs) would otherwise have to perform modem protocol processing. Otherwise, minimal modem reformatting can be performed at the aggregation point.Type: ApplicationFiled: January 21, 2009Publication date: May 28, 2009Applicant: Cisco Technology, Inc.Inventors: Vicent T. Grove, Herbert M. Wildfeuer, Mehryar Khalili Garakani, Bruce D. Juhlin, Scott Anthony Boynton
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Patent number: 7489633Abstract: Method and apparatus are described for differential MoIP bring-up and compression negotiation. A first differential, and, more particularly, overlapping, bring-up method involves initiating a bring-up of a first layer associated with a first modem; imposing a time delay; after the time delay, initiating a bring-up of a second layer associated with a second modem; and delaying completion of the first layer bring-up associated with the first modem until substantial completion of the second layer bring-up associated with the second modem. Two alternative differential, and, more particularly, sequential, V.8 modem relay link bring-up methods involve first bringing up a physical layer at a first leg while delaying bring-up of the physical layer of the second leg until completion of the bring up of the physical layer at the first leg, and thereafter completing XID exchange.Type: GrantFiled: September 24, 2002Date of Patent: February 10, 2009Assignee: Cisco Technology Inc.Inventors: Mehryar Khalili Garakani, Herbert M. Wildfeuer
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Patent number: 7483414Abstract: A modem data aggregating gateway that supports modem relay functionality for permitting reliable switching of modem traffic between a VoIP network and a data packet switch Internet Protocol (IP) network, s.a. the Internet. The modem relay aggregator may receive modem data encapsulated as Voice over IP (VoIP) data packets in accordance with a Simple Packet Relay Transport (SPRT) mechanism. The packet data may be error corrected and/or decompressed before being repackaged for forwarding to the ultimate destination. In the event that the destination is itself an IP device, the modem relay aggregator may forward the packets directly over the IP network. As a result, if the destination of a modem call is an IP device (such as a Web site or other Internet-enabled device) the technique eliminates two points from a processing path in which digital signal processing (DSPs) would otherwise have to perform modem protocol processing. Otherwise, minimal modem reformatting can be performed at the aggregation point.Type: GrantFiled: May 10, 2002Date of Patent: January 27, 2009Assignee: Cisco Technology, Inc.Inventors: Vicent T. Grove, Herbert M. Wildfeuer, Mehryar Khalili Garakani, Bruce D. Juhlin, Scott Anthony Boynton