公开(公告)号：US11102043B2

公开(公告)日：2021-08-24

申请号：US16478086

申请日：2018-01-18

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Thomas Holtzman Williams ,  Lin Cheng

IPC: H04W72/00 ,  H04L27/26 ,  H04B1/7103 ,  H04L27/00 ,  H04L27/34

Abstract: A method of modulating a series of input digital symbols of a first modulation scheme is provided. The method is implemented by a transmitter and includes receiving a sequential series of samples of the digital symbols in a first domain of the first modulation scheme. The first domain is one of the time domain and the frequency domain. The method further includes determining a dual of the first modulation scheme. The dual has a second modulation scheme in a second domain that is different from the first domain the second domain is the other of the time domain and the frequency domain. The method further includes applying a 90 degree rotational operation to the second modulation scheme to generate a rotational modulation format, modulating the series of digital symbols with the generated rotational modulation format, and outputting the modulated series of digital symbols to a receiver.

公开(公告)号：US10985832B2

公开(公告)日：2021-04-20

申请号：US16780367

申请日：2020-02-03

Applicant: Cable Television Laboratories, Inc.

Inventor： Thomas Holtzman Williams ,  David Daniel Smith

IPC: H04B7/185 ,  H04B1/04 ,  H04B15/00 ,  H04B7/155 ,  H04W16/24

Abstract: Mitigation of satellite interference is contemplated. The mitigation may include processing satellite transmissions to remove interferences based on an amount of signal overlap, such as to facilitate mitigating interferences resulting from satellite spacing and/or ground antenna dish size.

公开(公告)号：US20200186240A1

公开(公告)日：2020-06-11

申请号：US16780367

申请日：2020-02-03

Applicant: Cable Television Laboratories, Inc.

Inventor： Thomas Holtzman Williams ,  David Daniel Smith

IPC: H04B7/185 ,  H04B1/04 ,  H04W16/24 ,  H04B7/155 ,  H04B15/00

Abstract: Mitigation of satellite interference is contemplated. The mitigation may include processing satellite transmissions to remove interferences based on an amount of signal overlap, such as to facilitate mitigating interferences resulting from satellite spacing and/or ground antenna dish size.

公开(公告)号：US20190222007A1

公开(公告)日：2019-07-18

申请号：US16252233

申请日：2019-01-18

Applicant: Cable Television Laboratories, Inc.

Inventor： Luis Alberto Campos ,  Thomas Holtzman Williams ,  Zhensheng Jia

IPC: H02G1/16 ,  H01R24/56 ,  H02G1/08 ,  H04H60/93 ,  H04L12/28

CPC classification number: H02G1/16 ,  H01R24/566 ,  H02G1/08 ,  H04H60/93 ,  H04L12/2801

Abstract: Generating an assessment of the suitability of cables, ducts, tubes, pipes and/or other hollow-type of conduits to extraction of cores, conductors, insulation, etc. included therein while still buried in the ground or otherwise positioned out-of-sight so as to be unavailable for visual and/or physical inspection is contemplated. The assessment may be used to indicate a suitability of a cable buried in the ground of a hybrid fiber coaxial (HFC) cable plant to extraction of the type whereby a core of the cable may be extracted using hydraulics while still buried.

公开(公告)号：US11863366B2

公开(公告)日：2024-01-02

申请号：US17409522

申请日：2021-08-23

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Thomas Holtzman Williams ,  Lin Cheng

IPC: H04L27/26 ,  H04B1/7103 ,  H04L27/00 ,  H04L27/34 ,  H04W72/30

CPC classification number: H04L27/2636 ,  H04B1/7103 ,  H04L27/0008 ,  H04L27/3405 ,  H04W72/30

Abstract: A method of modulating a series of input digital symbols of a first modulation scheme is provided. The method is implemented by a transmitter and includes receiving a sequential series of samples of the digital symbols in a first domain of the first modulation scheme. The first domain is one of the time domain and the frequency domain. The method further includes determining a dual of the first modulation scheme. The dual has a second modulation scheme in a second domain that is different from the first domain the second domain is the other of the time domain and the frequency domain. The method further includes applying a 90 degree rotational operation to the second modulation scheme to generate a rotational modulation format, modulating the series of digital symbols with the generated rotational modulation format, and outputting the modulated series of digital symbols to a receiver.

公开(公告)号：US11804910B1

公开(公告)日：2023-10-31

申请号：US17509789

申请日：2021-10-25

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Thomas Holtzman Williams ,  Luis Alberto Campos ,  Jason W. Rupe

IPC: H04B17/00 ,  H04B17/29 ,  H04H20/77 ,  H04L12/28 ,  H04B7/10 ,  H04L5/00

CPC classification number: H04B17/0085 ,  H04B7/10 ,  H04B17/29 ,  H04H20/77 ,  H04L12/2801 ,  H04L5/0007

Abstract: A transmitter is configured to transmit data to a receiver over a communications network. The transmitter includes a memory for storing computer-executable instructions and a processor in operable communication with the memory. The processor is configured to (i) collect spectrum data of a spectral band over a first sampling interval, and (ii) store the collected spectrum data in the memory. The transmitter further includes a common path distortion (CPD) detection unit configured to (i) sample the collected spectrum data, over a second sampling interval less than the first sampling interval, for a plurality of sub-bands within the spectral band, (ii) analyze the spectral band and each sub-band for indications of common path distortion, and (iii) inject a test signal configured for detection at a headend of the communications network. The transmitter further includes a modem portion configured to operably communicate with the headend and the receiver.

公开(公告)号：US11711138B1

公开(公告)日：2023-07-25

申请号：US17234280

申请日：2021-04-19

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Thomas Holtzman Williams ,  David Daniel Smith

IPC: H04B7/185 ,  H04B1/04 ,  H04B7/155 ,  H04B15/00 ,  H04W16/24

CPC classification number: H04B7/18513 ,  H04B1/0475 ,  H04B7/15585 ,  H04B15/005 ,  H04W16/24 ,  H04B2001/0425

Abstract: Mitigation of satellite interference is contemplated. The mitigation may include processing satellite transmissions to remove interferences based on an amount of signal overlap, such as to facilitate mitigating interferences resulting from satellite spacing and/or ground antenna dish size.

公开(公告)号：US11626843B1

公开(公告)日：2023-04-11

申请号：US17367547

申请日：2021-07-05

Applicant: Cable Television Laboratories, Inc.

Inventor： Thomas Holtzman Williams ,  Belal Hamzeh

IPC: H03F3/189 ,  H04L5/14 ,  H03F3/68 ,  H04L12/28 ,  H03F3/62

Abstract: An amplification subsystem for a communication system includes a downstream amplifier configured to transmit a downstream signal within a first frequency range, an upstream amplifier configured to transmit an upstream signal within a second frequency range, and a bidirectional amplifier configured to selectively transmit a mid-band signal in either of the upstream and downstream direction.

公开(公告)号：US11552831B1

公开(公告)日：2023-01-10

申请号：US17657712

申请日：2022-04-01

Applicant: Cable Television Laboratories, Inc.

Inventor： Thomas Holtzman Williams ,  Luis Alberto Campos ,  Lin Cheng

IPC: H04L25/03

Abstract: A method for equalizer correction in a communication network includes (a) obtaining raw equalizer coefficients in a frequency domain, (b) removing time delay from the raw equalizer coefficients to generate corrected equalizer coefficients in a time domain such that a direct current (DC) corrected equalizer coefficient of the corrected equalizer coefficients has a phase of zero, and (c) converting the corrected equalizer coefficients from the time domain to the frequency domain.

公开(公告)号：US20190222316A1

公开(公告)日：2019-07-18

申请号：US16252324

申请日：2019-01-18

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Thomas Holtzman Williams

IPC: H04B10/2575 ,  H04L12/28 ,  H04L29/06

CPC classification number: H04B10/2575 ,  H04L12/2801 ,  H04L12/2803 ,  H04L69/18

Abstract: A communication network includes a first electrical cable, a home network translation device, and a first termination device. The home network translation device is communicatively coupled between an optical cable and the first electrical cable, and the home network translation device is configured to translate data between an optical protocol on the optical cable and a home networking protocol on the first electrical cable. The first termination device is communicatively coupled to the first electrical cable and is configured to translate data between the home networking protocol on the first electrical cable and an additional protocol on an additional communication medium communicatively coupled to the first termination device.