Patents by Inventor Curtis D. Knittle

Curtis D. Knittle 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).

  • Patent number: 12155525
    Abstract: Grafting segments of a network together to mitigate service disruptions associated with impairments, maintenance, etc., is contemplated. The grafting may include instantiating a wired and/or wireless graft to facilitate connecting an impaired portion of a network to an unimpaired portion, such as to reestablish services at the impaired portion via the graft to the unimpaired portion.
    Type: Grant
    Filed: January 16, 2022
    Date of Patent: November 26, 2024
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Jason W. Rupe, Curtis D. Knittle
  • Patent number: 11909512
    Abstract: A coherent optical injection locking (COIL) apparatus generates multiple optical source outputs from a single optical source generated by a parent laser. The COIL apparatus includes a plurality of optical source generators each having a child laser, of lesser performance than the parent laser, that is injection locked to the single optical source. The optical source generators may have one or both of a shared configuration and a cascaded configuration that replicates the single optical source, or a single wavelength of the single optical source when it is a comb source.
    Type: Grant
    Filed: March 9, 2022
    Date of Patent: February 20, 2024
    Assignee: CABLE TELEVISION LABORATORIES, INC.
    Inventors: Zhensheng Jia, David Daniel Smith, Junwen Zhang, Luis Alberto Campos, Curtis D. Knittle
  • Patent number: 11876556
    Abstract: A method for implementing an out-of-band communication channel in a coherent optical access network includes steps (a)-(e). Step (a) includes separating a MAC-layer signal received from a media access control (MAC) layer into an initial communication-channel signal and an initial data-channel signal. Step (b) includes encoding, using a first signal-coding scheme within a transceiver of a coherent passive optical network (PON), the initial communication-channel signal into a communication-channel signal occupying a first frequency band. Step (c) includes encoding, using a second signal-coding scheme within the transceiver, the initial data-channel signal into a data-channel signal occupying a second frequency band not overlapping the first frequency band. Step (d) includes combining the communication-channel signal and the data-channel signal to yield an analog signal.
    Type: Grant
    Filed: October 3, 2022
    Date of Patent: January 16, 2024
    Assignee: CABLE TELEVISION LABORATORIES, INC.
    Inventors: Junwen Zhang, Zhensheng Jia, Curtis D. Knittle, Luis Alberto Campos
  • Patent number: 11770321
    Abstract: Methods, systems, and devices for wireless communications are described. A user may select a cable modem (CM) at a graphical user interface (GUI) of a network device for testing. The network device may receive the indication of a selected query from GUI and transmit the selected query to the CM. The network device may receive a response message from the CM and compare the response message to an expected response message. The network device may generate a report indicating a status of the CM based on the comparing. The status of the CM may relate to a compliance of the CM to a standard. Additionally or alternatively, the status of the CM may indicate a performance level of the CM.
    Type: Grant
    Filed: October 4, 2021
    Date of Patent: September 26, 2023
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Jason W. Rupe, Curtis D. Knittle, Jingjie Zhu, John Phillips
  • Publication number: 20230209229
    Abstract: A communication network includes a first serving area, a second serving area, a network hub, one or more trunk optical cables, and a first bridging connection. The first serving area includes a first optical switch, a first optical node, and one or more first intra-serving-area (ISA) optical cables communicatively coupling the first optical node to the first optical switch. The second serving area includes a second optical switch, a second optical node, and one or more second ISA optical cables communicatively coupling the second optical node to the second optical switch. The one or more trunk optical cables communicatively couple the first and second optical nodes to the network hub, and the first bridging connection communicatively couples the one or more first ISA optical cables and the one or more second ISA optical cables.
    Type: Application
    Filed: February 28, 2023
    Publication date: June 29, 2023
    Inventors: Luis Alberto Campos, Zhensheng Jia, Nicolas Joel Metts, Curtis D. Knittle, Isaac Elliott, Ralph William Brown
  • Patent number: 11539441
    Abstract: A method for laser chirp precompensation includes modulating an amplitude of an optical signal, in response to an amplitude of one of (i) a chirp-compensated signal generated via distortion of an original modulated signal according to an inverse of a chirp-response function of a laser and (ii) a first signal derived from the chirp-compensated signal, to yield an amplitude-modulated optical signal. The method also includes modulating a phase of the amplitude-modulated optical signal in response to a phase of one of (i) the chirp-compensated signal and (ii) a second signal derived from the chirp-compensated signal to yield a chirp-compensated optical signal.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: December 27, 2022
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Mu Xu, Junwen Zhang, Haipeng Zhang, Zhensheng Jia, Luis Alberto Campos, Curtis D. Knittle
  • Patent number: 11463164
    Abstract: A method for implementing an out-of-band communication channel in a coherent optical access network includes steps (a)-(e). Step (a) includes separating a MAC-layer signal received from a media access control (MAC) layer into an initial communication-channel signal and an initial data-channel signal. Step (b) includes encoding, using a first signal-coding scheme within a transceiver of a coherent passive optical network (PON), the initial communication-channel signal into a communication-channel signal occupying a first frequency band. Step (c) includes encoding, using a second signal-coding scheme within the transceiver, the initial data-channel signal into a data-channel signal occupying a second frequency band not overlapping the first frequency band. Step (d) includes combining the communication-channel signal and the data-channel signal to yield an analog signal.
    Type: Grant
    Filed: July 24, 2021
    Date of Patent: October 4, 2022
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Junwen Zhang, Zhensheng Jia, Curtis D. Knittle, Luis Alberto Campos
  • Patent number: 11240099
    Abstract: Grafting segments of a network together to mitigate service disruptions associated with impairments, maintenance, etc., is contemplated. The grafting may include instantiating a wired and/or wireless graft to facilitate connecting an impaired portion of a network to an unimpaired portion, such as to reestablish services at the impaired portion via the graft to the unimpaired portion.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: February 1, 2022
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Jason W. Rupe, Curtis D. Knittle
  • Publication number: 20220029908
    Abstract: Methods, systems, and devices for wireless communications are described. A user may select a cable modem (CM) at a graphical user interface (GUI) of a network device for testing. The network device may receive the indication of a selected query from GUI and transmit the selected query to the CM. The network device may receive a response message from the CM and compare the response message to an expected response message. The network device may generate a report indicating a status of the CM based on the comparing. The status of the CM may relate to a compliance of the CM to a standard. Additionally or alternatively, the status of the CM may indicate a performance level of the CM.
    Type: Application
    Filed: October 4, 2021
    Publication date: January 27, 2022
    Inventors: JASON W. RUPE, CURTIS D. KNITTLE, JINGJIE ZHU, JOHN PHILLIPS
  • Patent number: 11140062
    Abstract: Methods, systems, and devices for wireless communications are described. A user may select a cable modem (CM) at a graphical user interface (GUI) of a network device for testing. The network device may receive the indication of a selected query from GUI and transmit the selected query to the CM. The network device may receive a response message from the CM and compare the response message to an expected response message. The network device may generate a report indicating a status of the CM based on the comparing. The status of the CM may relate to a compliance of the CM to a standard. Additionally or alternatively, the status of the CM may indicate a performance level of the CM.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: October 5, 2021
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Jason W. Rupe, Curtis D. Knittle, Jingjie Zhu, John Phillips
  • Publication number: 20190356572
    Abstract: Methods, systems, and devices for wireless communications are described. A user may select a cable modem (CM) at a graphical user interface (GUI) of a network device for testing. The network device may receive the indication of a selected query from GUI and transmit the selected query to the CM. The network device may receive a response message from the CM and compare the response message to an expected response message. The network device may generate a report indicating a status of the CM based on the comparing. The status of the CM may relate to a compliance of the CM to a standard. Additionally or alternatively, the status of the CM may indicate a performance level of the CM.
    Type: Application
    Filed: May 15, 2019
    Publication date: November 21, 2019
    Inventors: JASON W. RUPE, CURTIS D. KNITTLE, JINGJIE ZHU, JOHN PHILLIPS
  • Publication number: 20190342641
    Abstract: A communication network includes a first serving area, a second serving area, a network hub, one or more trunk optical cables, and a first bridging connection. The first serving area includes a first optical switch, a first optical node, and one or more first intra-serving-area (ISA) optical cables communicatively coupling the first optical node to the first optical switch. The second serving area includes a second optical switch, a second optical node, and one or more second ISA optical cables communicatively coupling the second optical node to the second optical switch. The one or more trunk optical cables communicatively couple the first and second optical nodes to the network hub, and the first bridging connection communicatively couples the one or more first ISA optical cables and the one or more second ISA optical cables.
    Type: Application
    Filed: May 3, 2019
    Publication date: November 7, 2019
    Inventors: Luis Alberto Campos, Zhensheng Jia, Nicolas Joel Metts, Curtis D. Knittle, Isaac Elliott, Ralph William Brown
  • Publication number: 20190109760
    Abstract: Grafting segments of a network together to mitigate service disruptions associated with impairments, maintenance, etc., is contemplated. The grafting may include instantiating a wired and/or wireless graft to facilitate connecting an impaired portion of a network to an unimpaired portion, such as to reestablish services at the impaired portion via the graft to the unimpaired portion.
    Type: Application
    Filed: October 5, 2018
    Publication date: April 11, 2019
    Inventors: Jason W. Rupe, Curtis D. Knittle
  • Patent number: 5999901
    Abstract: The present invention provides a telephone network apparatus for performing speech recognition services in a telephone system in substantially real time. The apparatus uses a telephone channel signal to determine the echo delay of a telephone channel and then uses this delay to configure an echo cancellation filter for use in performing speech recognition. Use of echo delay in configuring the filter allows the echo cancellation function to be done using much less computational time than would be needed without its use, thereby granting a speech recognition unit greater access to a resident microprocessor to perform its function in substantially real time.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: December 7, 1999
    Assignees: MediaOne Group, Inc, U S West, Inc
    Inventors: Curtis D. Knittle, Paul D. Jaramillo, Frank H. Wu
  • Patent number: 5761638
    Abstract: The present invention provides a telephone network apparatus for performing speech recognition services in a telephone system in substantially real time. The apparatus uses a telephone channel signal to determine the echo delay of a telephone channel and then uses this delay to configure an echo cancellation filter for use in performing speech recognition. Use of echo delay in configuring the filter allows the echo cancellation function to be done using much less computational time than would be needed without its use, thereby granting a speech recognition unit greater access to a resident microprocessor to perform its function in substantially real time.
    Type: Grant
    Filed: March 17, 1995
    Date of Patent: June 2, 1998
    Inventors: Curtis D. Knittle, Paul D. Jaramillo, Frank H. Wu
  • Patent number: 5758319
    Abstract: A method and system for limiting the number of words searched by a voice recognition system having a predetermined language model containing a first plurality of words corresponding to all words recognizable by the voice recognition system in a predetermined application having at least one mode. The predetermined language model includes a list of all states that correspond to each of the first plurality of words. Based on the current mode of the application of the voice recognition system a subvocabulary of active words containing a second plurality of the first plurality of words is determined. A signal identifying the subvocabulary of active words is transferred to a recognizer which turns on only those states in the predetermined language model corresponding to the active words. Finally, a search is performed on a portion of the predetermined language model according to the subvocabulary of active words so that the computation time of the voice recognition system is reduced.
    Type: Grant
    Filed: June 5, 1996
    Date of Patent: May 26, 1998
    Inventor: Curtis D. Knittle