Patent application number | Description | Published |
20100162329 | Multiple Frequency Channel Data Distribution - An enhanced multimedia over coax alliance (MoCA) implementation having a single Receive (Rx) physical (Phy) module that is arranged to receive data via one of at least two Rx radio frequency (RF) modules, which are arranged to be in communication with a coaxial cable, and at least two transmit (Tx) Phy modules respectively arranged to be in communication with two Tx RF modules, which are also arranged to be in communication with the coaxial cable. | 06-24-2010 |
20100199158 | METHOD FOR TRANSMITTING SAMPLED DATA AND CONTROL INFORMATION BETWEEN A DSP AND AN RF/ANALOG FRONT-END - A method for delivering control information together with sampled data between a DSP and an RF/analog front-end in a high speed communication modem, which embeds sampled data and control information in frames to be transferred over one interface. A frame may comprise various fields, each may consist of one or more bytes or octets. The frame may have a data field for carrying the sampled data, and at least one control field for transferring the control information to update RF/analog front-end registers. The control field may include an octet containing a control address, an octet containing a control command, and an octet containing control data. The frame may also provide means of synchronization, e.g., by using a sync field to identify the frame boundary. | 08-05-2010 |
20100231794 | MULTIPLE DIGITAL SIGNALS FROM A SINGLE INTEGRATED CIRCUIT - Multiple digital signals from a single integrated circuit (IC) may be provided. The IC may receive an analog signal comprising a plurality of channels, convert the analog signal to a digital signal, and provide the digital signal to a plurality of digital channel tuners. The tuners may each select one of the plurality of channels and provide the selected channels as a plurality of digital output signals. A signal conditioner may be used to prepare the analog signal for digitization. | 09-16-2010 |
20110215873 | NOVEL SWITCHED PHASE AND FREQUENCY DETECTOR BASED DPLL CIRCUIT WITH EXCELLENT WANDER AND JITTER PERFORMANCE AND FAST FREQUENCY ACQUISITION - Some embodiments of the present invention may include a DPLL circuit comprising a firmware. The firmware may comprise a re-sampled NCO phase detector capable of receiving a reference clock timing signal and a VCXO clock timing signal. The re-sampled NCO phase detector may comprise a resampler capable of receiving phase output and the VCXO clock timing signal and resampling the phase output; and a subtractor capable of receiving the resampled phase output and subtracting the resampled phase output from a calculated mean value of the phase output. The firmware may further comprise a frequency detector capable of receiving the reference clock timing signal and the VCXO clock timing signal; and a multiplexer capable of switching between the re-sampled NCO phase detector and the frequency detector dependent upon a frequency lock status. | 09-08-2011 |
20110234810 | GENERATED SET TOP CALIBRATION PATTERNS IN MANUFACTURING - Included are systems and methods for performing an internal operations test to a set top terminal (STT). At least one embodiment of a method includes creating a test pattern for testing video functionality of the STT, sending the created test pattern to a digital encoder, and converting the test pattern to an analog signal. | 09-29-2011 |
20130114480 | Time Domain Duplex Between CMTS and Cable Modems - A time domain duplex cable system includes a mechanism to change the communication direction of spectrum used in a cable plant including a Cable Modem Termination System (CMTS), a Fiber Node and a plurality of cable modems in communication with the CMTS via the Fiber Node. Active devices, e.g., directional amplifiers switch the communication direction of the cable plant in response to timing information received from the CMTS. To avoid collisions of downstream and upstream packets, a guard time is determined and used in connection with generating the timing information. In one embodiment, the timing information is transmitted in one or more Data Over Cable Service Interface Specifications (DOCSIS) Media Access Protocol (MAP) messages transmitted by the CMTS towards the cable modems. | 05-09-2013 |
20140079102 | Physical Layer (PHY) Link Signaling for Cable Networks - Embodiments include systems and methods for enabling a physical layer (PHY) link signaling channel between a network termination modem and a cable modem in a cable network. The PHY link signaling channel is embedded within the same multi-carrier channel as the data and enables PHY link up between the network termination modem and cable modem without involvement of higher layers (e.g., MAC). The PHY link signaling channel can be implemented in the downstream (from the network termination modem to the cable modem(s)) or in the upstream from a cable modem to the network termination modem. Embodiments are applicable to any known cable network, and particularly to cable networks implementing the DOCSiS and EPoC standards. | 03-20-2014 |
20140079399 | Time to Time-Frequency Mapping and Demapping for Ethernet Passive Optical Network over Coax (EPoC) - Embodiments include, but are not limited to, systems and methods for enabling Orthogonal Frequency Division Multiple Access (OFDMA) in the upstream in an Ethernet Passive Optical Network over Coax (EPoC) network. Embodiments include systems and methods for translating Ethernet Passive Optical Network (EPON) upstream time grants to OFDMA resources represented by individual subcarriers of an upstream OFDMA frame. In an embodiment, the translation of EPON upstream time grants to OFDMA resources ensures that Coaxial Network Units (CNUs) sharing an OFDMA frame do not use overlapping subcarriers within the frame. Embodiments further include systems and methods for timing upstream transmissions by the CNUs in order for the transmissions to be received within the same upstream OFDMA frame at a Fiber Coax Unit (FCU). Embodiments further include systems and methods for re-generating a data burst from OFDMA resources for transmission from the FCU to an Optical Line Terminal (OLT). | 03-20-2014 |
20140153673 | Adaptive decoding based on signal to noise ratio (SNR) - A communication device is configured adaptively to process a receive signal based on noise that may have adversely affected the signal during transition via communication channel. The device may be configured to identify those portions of the signal of the signal that are noise-affected (e.g., noise-affected sub-carriers of an orthogonal frequency division multiplexing (OFDM) signal), or the device may receive information that identifies those portions of the signal that are noise-affected from one or more other devices. The device may be configured to perform the modulation processing of the received signal to generate log-likelihood ratios (LLRs) for use in decoding the signal. Those LLRs associated with noise-affected portions of the signal are handled differently than LLRs associated with portions of the signal that are not noise-affected. The LLRs may be scaled based on signal to noise ratio(s) (SNR(s)) associated with the signal (e.g., based on background noise, burst noise, etc.). | 06-05-2014 |
20140177620 | NOISE INGRESS CANCELATION - A demodulator can include an ingress exciser configured to remove ingress noise from a burst mode digital input signal that is above a predetermined threshold and resides within a narrowband. An adaptive equalizer can be configured to adaptively equalize an estimate of the signal provided from the ingress exciser and to provide an adaptively equalized signal. An ingress predictor can be configured to subtract an estimate of remaining predicted ingress noise from the adaptively equalized signal to provide a resultant signal that is substantially free of the ingress noise. | 06-26-2014 |
20140177741 | OFDM or OFDMA signaling for ranging and data - A communication device is operative to generate and orthogonal frequency division multiplexing (OFDM) symbol that includes one or more data and ranging modulation symbols. The data and ranging modulation symbols may be included within different sub-carriers of the OFDM symbol. The OFDM symbol is used to generate an OFDM symbol pair in the frequency domain (FDOM). After conversion from the FDOM to the time domain (TDOM), the OFDM symbol pair may then undergoes post-processing in the TDOM before transmission. Such post-processing may include the addition of cyclic prefix (CP) and cyclic suffix (CS) to the OFDM symbol pair in the TDOM as well as filtering using a window function. The OFDM symbol may be generated as an orthogonal frequency division multiple access (OFDMA) symbol, and two were more OFDM symbols or OFDMA symbols may be arranged in a frame. | 06-26-2014 |
20140294052 | COMMUNICATION SYSTEM WITH PROACTIVE NETWORK MAINTENANCE AND METHODS FOR USE THEREWITH - A transmitter for use in a cable modem termination system includes a data processing module that generates a plurality of OFDM symbols from a data packet. A probe symbol generator generates a probe symbol, as one of a plurality of probe symbol types. The probe symbol is selectively inserted within the plurality of OFDM symbols, at a pre-defined probe symbol interval. | 10-02-2014 |
20150020123 | Bandwidth Flexibility Through Multiple Frequency Channel Data Distribution - An enhanced multimedia over coax alliance (MoCA) implementation having a single Receive (Rx) physical (Phy) module that is arranged to receive data via one of at least two Rx radio frequency (RF) modules, which are arranged to be in communication with a coaxial cable, and at least two transmit (Tx) Phy modules respectively arranged to be in communication with two Tx RF modules, which are also arranged to be in communication with the coaxial cable. | 01-15-2015 |