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公开(公告)号：US11686852B2
公开(公告)日：2023-06-27
申请号：US17461580
申请日：2021-08-30
Applicant: CABLE TELEVISION LABORATORIES, INC.
Inventor： Belal Hamzeh , Peter Paul Smyth , Lin Cheng , Jim O'Connor , Eric Winkelman , Thomas H. Williams , Steve Arendt
CPC classification number: G01S19/21 , H04B7/18517 , H04B7/18519 , H04J11/0023 , H04J11/0066 , H04J11/0073 , H04J11/0076 , H04W16/14 , H04B7/0617
Abstract: A communication system, includes a satellite receiver in operable communication with a central server, a cellular node configured to operate within a proximity of the satellite receiver, and at least one mobile communication device configured to communicate (i) with the cellular node, (ii) within the proximity of the satellite receiver, and (iii) using a transmission signal capable of causing interference to the satellite receiver. The satellite receiver is configured to detect a repeating portion of the transmission signal and determine a potential for interference from the at least one mobile communication device based on the detected repeating portion.
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公开(公告)号：US11115079B2
公开(公告)日：2021-09-07
申请号：US16730664
申请日：2019-12-30
Applicant: CABLE TELEVISION LABORATORIES, INC.
Inventor： Thomas H. Williams , Gregory Charles White
Abstract: A method of reducing transmission power for an encoded data stream includes the steps of receiving an incoming data stream having equal probability for a plurality of incoming data bits, assigning a symbol scheme to the received data bits of the incoming data stream according to probabilities of occurrence of individual ones of the received data bits, and transmitting an outgoing data stream according to the assigned symbol scheme having a second average transmit power, different than the first average transmit power, for a plurality of outgoing symbols.
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公开(公告)号：US10892882B2
公开(公告)日：2021-01-12
申请号：US16559403
申请日：2019-09-03
Applicant: CABLE TELEVISION LABORATORIES, INC
Inventor： Belal Hamzeh , Thomas H. Williams , Daniel Rice , Luis Alberto Campos
Abstract: Systems and methods presented herein provide for improved duplex communications in an RF cable network comprising a plurality of CMs. In one embodiment, a system includes a CMTS operable to transmit downstream communications to the CMs and to process upstream communications from the CMs. The system also includes a duplex RF communication path between the CMTS and the CMs. The CMTS is further operable to transmit a control signal that directs a first of the CMs to transmit, to direct the remaining CMs to receive the transmission from the first CM, to direct the CMs to report received power levels of the transmission from the first CM, and to calculate RF isolations of the remaining CMs with respect to the first CM based on the reported power levels.
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公开(公告)号：US20200252124A1
公开(公告)日：2020-08-06
申请号：US16851620
申请日：2020-04-17
Applicant: CABLE TELEVISION LABORATORIES, INC
Inventor： Peter Paul Smyth , Lin Cheng , Jim O'Connor , Eric Winkelman , Thomas H. Williams , Belal Hamzeh , Steve Arendt
IPC: H04B7/185 , H04W52/24 , H04W16/14 , H04W16/20 , H04B7/0413 , H04B17/391
Abstract: A communication system includes an earth station configured to receive a downlink transmission from a satellite and transmit an uplink transmission to the satellite. The communication system further includes a server in operable communication with the earth station, a beacon detector in operable communication with the server, an access point configured to operate within a proximity of the earth station, and a beacon transmitter disposed within close proximity to the access point. The beacon transmitter is configured to transmit a beacon signal to one or more of the server and the beacon detector. The beacon signal uniquely identifies the access point. The server is configured to implement a measurement-based protection scheme with respect to at least one of the downlink transmission and the uplink transmission.
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公开(公告)号：US10680703B2
公开(公告)日：2020-06-09
申请号：US16264072
申请日：2019-01-31
Applicant: CABLE TELEVISION LABORATORIES, INC
Inventor： Peter Paul Smyth , Lin Cheng , Jim O'Connor , Eric Winkelman , Thomas H. Williams , Belal Hamzeh , Steve Arendt
IPC: H04B7/185 , H04B7/0413 , H04B7/06 , H04W16/20 , H04B17/391 , H04W16/14 , H04W52/24
Abstract: A communication system includes an earth station configured to receive a downlink transmission from a satellite and transmit an uplink transmission to the satellite. The communication system further includes a server in operable communication with the earth station, a beacon detector in operable communication with the server, an access point configured to operate within a proximity of the earth station, and a beacon transmitter disposed within close proximity to the access point. The beacon transmitter is configured to transmit a beacon signal to one or more of the server and the beacon detector. The beacon signal uniquely identifies the access point. The server is configured to implement a measurement-based protection scheme with respect to at least one of the downlink transmission and the uplink transmission.
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Patent Agency Ranking
公开(公告)号：US10306683B2
公开(公告)日：2019-05-28
申请号：US15083126
申请日：2016-03-28
Applicant: Cable Television Laboratories, Inc.
Inventor： Thomas H. Williams , Matthew D. Schmitt
Abstract: Scheduling of transmission opportunities to prevent collisions is contemplated. The transmission opportunities may be scheduled for terminal units where transmissions of one terminal unit may collide or otherwise interfere with transmissions of another terminal unit. The transmission opportunities may be scheduled according to a time-frequency grid to prevent collisions in a time domain and/or a frequency domain.
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公开(公告)号：US20190149373A1
公开(公告)日：2019-05-16
申请号：US16249734
申请日：2019-01-16
Applicant: CABLE TELEVISION LABORATORIES, INC
Inventor： Thomas H. Williams
Abstract: A digital transmission system includes a transmitter configured to transmit an orthogonal frequency division multiplexing (OFDM) signal along a signal path, a receiver for receiving the OFDM signal from the transmitter and extracting OFDM symbols from the received OFDM signal, and a diagnostic unit configured to (i) demodulate the received OFDM signal to create an ideal signal, (ii) compare the received OFDM signal with the ideal signal to calculate an error signal, (iii) cross-correlate the error signal with the ideal signal, and (iv) determine a level nonlinear distortion from one of the transmitter and the signal path based on the correlation of the error signal with the ideal signal.
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公开(公告)号：US10218546B2
公开(公告)日：2019-02-26
申请号：US15711168
申请日：2017-09-21
Applicant: CABLE TELEVISION LABORATORIES, INC
Inventor： Thomas H. Williams
Abstract: A digital transmission system includes a transmitter configured to transmit an orthogonal frequency division multiplexing (OFDM) signal along a signal path, a receiver for receiving the OFDM signal from the transmitter and extracting OFDM symbols from the received OFDM signal, and a diagnostic unit configured to (i) demodulate the received OFDM signal to create an ideal signal, (ii) compare the received OFDM signal with the ideal signal to calculate an error signal, (iii) cross-correlate the error signal with the ideal signal, and (iv) determine a level nonlinear distortion from one of the transmitter and the signal path based on the correlation of the error signal with the ideal signal.
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公开(公告)号：US20190028199A1
公开(公告)日：2019-01-24
申请号：US16040870
申请日：2018-07-20
Applicant: CABLE TELEVISION LABORATORIES, INC
Inventor： Thomas H. Williams , Luis Alberto Campos , Zhensheng Jia
IPC: H04B10/2513 , H04B10/69
CPC classification number: H04B10/2513 , H04B10/40 , H04B10/50 , H04B10/60 , H04B10/697 , H04B10/6971 , H04B10/6972
Abstract: An optical signal receiver includes a processor, a memory, an input, an output, and a sampling unit in operable communication with the processor and the memory. The sampling unit includes a shift register and a clock, and is configured to receive a laser signal at the input, collect a first sample of the received input laser signal at a first time interval, determine an amplitude of the first sample, assign a first symbol of a plurality of symbols to the determined amplitude, insert the first symbol at a first insertion point within the shift register, and generate a delay value at the output based on a position of the first insertion point with respect to the output.
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公开(公告)号：US20170373749A1
公开(公告)日：2017-12-28
申请号：US15634251
申请日：2017-06-27
Applicant: CABLE TELEVISION LABORATORIES, INC
Inventor： Thomas H. Williams , Ryan Richard Vail
IPC: H04B10/077 , H04B3/48 , H04B10/071 , H04B10/25
Abstract: A system for testing line attenuation defects includes a data transmission line configured to transmit a forward signal in a first direction, at least one reflection point at a first location along the data transmission line, a test probe configured to (i) electrically contact a center conductor at a second location along the data transmission line, (ii) introduce a broadband data signal onto the data transmission line, and (iii) measure, at the second location, a return signal from the reflection point, and a spectrum capturing device in operable contact with the test probe. The spectrum capturing device is configured to (i) collect and arrange frequency data measured by the test probe for the test signal, the return signal, and a standing wave created by the sum of the broadband data signal and the return signal, (ii) determine the voltage VSWR of the standing wave, and (iii) calculate a line loss from the VSWR.
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