Class / Patent application number | Description | Number of patent applications / Date published |
725111000 | Cable modem | 66 |
20080209489 | SYSTEM AND METHOD FOR TRANSMITTING DIGITAL CONTENT USING CABLE MODEM TERMINATION SYSTEM (CMTS) BYPASS ARCHITECTURE - A method and system for transmitting digital content, such as Internet Protocol television (IPTV) content, to a downstream modulator, such as an Edge Quadrature Amplitude Modulation (EQAM) modulator, within a cable system that includes a Cable Modem Termination System (CMTS), such as a modular CMTS (M-CMTS). Content is transmitted from a content source to the EQAM, via one or more networks, such as a regional area network and a converged interconnect network (CIN), in a manner that bypasses the M-CMTS. Conventionally, downstream IPTV content travels from the content source to the CIN, to the M-CMTS, back through the CIN and to the EQAM. By tunneling IPTV content directly to the downstream modulator, fewer M-CMTS components and less CIN switching bandwidth are involved than in conventional methods and systems. The cost savings associated with bypassing expensive CMTS components allows IPTV content delivery at costs comparable to conventional content transmission methods. | 08-28-2008 |
20080235746 | Methods and apparatus for content delivery and replacement in a network - Methods and apparatus for providing an alternate content delivery mechanism available to content-based network users. In one embodiment, the network comprises a cable television network, and subscribers are able to retrieve requested content from one or more other subscriber's storage medium and without going outside the cable network (or accessing the network core in any significant capacity) using a peer-to-peer (P2P) network protocol. Using this approach, bandwidth consumption is advantageously pushed out to the edge of the network from the core, also obviating content requests outside the network (e.g., to third-party servers on the Internet). Methods of operating the aforementioned P2P network, and various business paradigms relating thereto, are also disclosed. | 09-25-2008 |
20090044240 | Methods and systems for delivering DOCSIS services over heterogeneous access networks - Methods and systems are described for inserting protocol adaptation layers into access equipment to translate data over cable service interface specification services control messages to the corresponding messages in the other (multiple) heterogeneous access specification(s). A method of expanding DOCSIS into an alternative access network includes deploying a protocol adaptation layer in access equipment to translate DOCSIS control messages to corresponding messages in the alternative access network. | 02-12-2009 |
20090100487 | MITIGATING SUBSCRIBER SIDE ATTACKS IN A CABLE NETWORK - In one embodiment, a Cable Modem Termination System (CMTS) identifies an endpoint originating undesired traffic. Instead of dropping a bandwidth request for the identified endpoint by not responding, the CMTS responds to such a request by sending a data grant pending message. The data grant pending message causes a cable modem for the identified endpoint to enter a waiting state, which prevents further bandwidth requests for the identified endpoint. | 04-16-2009 |
20090113503 | METHOD AND SYSTEM FOR ALLOCATING BANDWIDTH BASED ON TRANSMISSION POWER OF DEVICES TRANSMITTING OVER COMMUNICATION CHANNELS IN A NETWORK - A method performed by a central network device, such as a network edge device, or a CMTS, determines whether some of a plurality of user devices coupled to a communication device are transmitting at substantially their respective maximum power output level over a given channel. If the central device determines that some of the devices are operating at near their maximum output level (“power pegged,) the central device searches for another channel that can carry the traffic of the power pegged devices at reduced data rate. If another channel can accommodate transmission of signals of the power pegged device, the central device instructs the power pegged devices to tune to the new channel at a reduced data rate compared to the data rate of the current channel. | 04-30-2009 |
20090125957 | STATEFUL DHCPv6 RELAY AGENT IN A CABLE MODEM TERMINATION SYSTEM - A CMTS or other data aggregation component having a DHCPv6 relay agent extracts a Media Access Control (MAC) address of an end device from a data packet received from an end device. A DHCPv6 data frame is created for transmission to a DHCPv6 server. The MAC address may be inserted into a specific option of the DHCPv6 data frame, where data in the option may not be processed by the server and are echoed back to the aggregation component or CMTS. The DHCPv6 data frame is transmitted to the DHCPv6 server. The component receives a response message from the server that may contain the MAC address or similar client hardware address as it was sent to the server by the network component. The network component may determine an outgoing port interface from which the response message should be sent, utilizing the MAC address and an interface bundling table. In this manner, interface bundling may be enabled. | 05-14-2009 |
20090125958 | METHOD OF UPGRADING A PLATFORM IN A SUBSCRIBER GATEWAY DEVICE - A method of upgrading a platform in a subscriber gateway device involves remote management. The platform includes an operating system, a management agent, and a management information object. The management agent responds to remote management requests received by the subscriber gateway device. The management information object indicates a service interruption impact assessment of a subscriber gateway device as determined by a current status of the subscriber gateway device. According to the method, a request is sent to the management agent, and in response to the request, a value of the management information object is returned. Based upon the response, it is determined whether or not to initiate a platform upgrade for the subscriber gateway device. | 05-14-2009 |
20090125959 | METHOD AND APPARATUS OF CABLE MODEM INITIALIZATION USING QUEUE-DEPTH-BASED BAND REQUEST FRAME IN HFC NETWORKS - A cable modem initialization method and apparatus using a queue-depth-based band request frame in a Hybrid Fiber Coax (HFC) network relates to a method and apparatus of requesting a Cable Modem Transmission System (CMTS) for band allocation so that a cable modem supporting a plurality of transceiving channels may transmit upstream data in an HFC network. A method of transmitting the queue-depth-based band request frame that requests the band allocation by a byte length of a transmission buffer when the cable modem performs an initialization process is provided. | 05-14-2009 |
20090125960 | Dual Tuner Design Utilizing Only One Input Port On A Handheld Meter - A portable network test meter device for a CATV network is disclosed which permits simultaneous operation of a measurement system including a first tuner and a communication system including a cable modem including a second tuner. Only a single RF input/output port is necessary for connection to the CATV network. | 05-14-2009 |
20090133083 | PASSIVE CIRCUIT FOR IMPROVED DIFFERENTIAL AMPLIFIER COMMON MODE REJECTION - A novel passive circuit for providing improved common mode rejection of a differential amplifier novel. The passive circuit functions to compensate for amplitude mismatches between the two outputs of a differential amplifier. To compensate for the amplitude mismatch between the output traces of the amplifier, a resistor is inserted in series with at either one or both of the differential outputs. The values of the resistors are set such that the mismatch is substantially eliminated. Inductors are connected in parallel with the resistors to create a zero ohm path for power. At high frequencies the inductor impedance is sufficiently high that the series resistor compensates for the imbalance caused by spurious products. The imbalance in the amplifier outputs is corrected with the resulting increase in the rejection of spurious frequency products by exploiting the differential common mode rejection (CMR) effect of the differential amplifier. | 05-21-2009 |
20090150953 | METHOD OF SETTING AND CHANGING RECEIVE CHANNEL SET OF CABLE MODEM - A method of effectively setting and changing a Receive Channel Set (RCS) of a cable modem (CM) is provided. | 06-11-2009 |
20090150954 | SERVER AND METHOD FOR CONTROLLING CUSTOMER PREMISES CABLE MODEM BASED ON CONFIGURATION INFORMATION - Disclosed are a server and method for controlling a customer premises cable modem based on configuration information. The configuration information control server includes a basic configuration information managing module to generate basic configuration information included in the configuration information for controlling the customer premises cable modem, and transmit the generated basic configuration information to the customer premises cable modem, a supplementary configuration information managing module to generate supplementary configuration information included in the configuration information, and transmit the generated supplementary configuration information to the customer premises cable modem, and a control module to determine whether either the basic configuration information or the supplementary configuration information is required to be transmitted to the customer premises cable modem. | 06-11-2009 |
20090150955 | APPARATUS AND METHOD FOR SWITCH OPERATION OF DOWNSTREAM TERMINAL PLATFORM FOR IP DATA TRANSMISSION USING LEGACY TRANSMISSION SYSTEM IN HFC NETWORK - A method and apparatus for a switch operation of a downstream terminal platform for Internet Protocol (IP) data transmission using a legacy transmission system in a Hybrid Fiber Coax (HFC) network is provided. The downstream terminal platform includes: a Radio Frequency (RF) transmitter to distribute and combine a signal transceived by an HFC network; a broadband downstream receiver to process a broadband signal received by the RF transmitter; a cable modem (CM) to process data received or transmitted by the RF transmitter; an IP layer switch to transmit data to a corresponding Customer Premises Equipment (CPE), the data being received from the broadband downstream receiver to the CPE, or to enable user data received from the CPE to be transmitted to a headend using the CM; and a subscriber controller to control the downstream terminal platform. | 06-11-2009 |
20090172759 | Wireless USB modem device supporting dual service for portable internet and digital broadcasting - The present invention relates to a wireless USB modem device supporting dual service for portable Internet and digital broadcasting. The wireless USB modem device includes a portable Internet communication module and a digital broadcast reception module. The wireless USB modem device includes a USB hub connected to USB interfaces of both the portable Internet communication module and the digital broadcast reception module, and configured to relay data to a user terminal. A switching mode power supply unit is implemented in a DC-DC switching mode, is supplied with power from the user terminal and is configured to apply power to the portable Internet communication module and the digital broadcast reception module so that the portable Internet communication module and the digital broadcast reception module can be simultaneously driven. Accordingly, a separate control unit for controlling USB interfaces is not required, and the number of peripherals connected to the USB port of the portable user terminal can be reduced. Further, portable Internet service and digital broadcasting service can be simultaneously provided, thus enabling bidirectional digital multimedia broadcasting service and Internet service to be simultaneously supported anytime and anywhere without regard to spatial or temporal restrictions. | 07-02-2009 |
20090205004 | Dynamic Allocation Of Upstream Channel Resources Among Multiple RF Domains - In one embodiment, an “upstream resource pool” may be defined, such that certain upstream resources may be utilized, or not, depending on current traffic demands. Such a pool may include a specified number of available upstream channels. A universe of “eligible” RF domains may be associated with the pool. To provide additional capacity when traffic demands warrant it, an eligible RF domain may be enabled to request one or more upstream channels from the pool. A channel may be requested for a specified duration, or for an unspecified period of time. | 08-13-2009 |
20090217334 | System and method for television signal demodulation and decoding - A modem for use with a computer having a demodulator and a decoder, the modem comprises a hardware interface; a demodulator front-end having a first input and a first output, the first output of the demodulator front-end being configured to interface with the demodulator of the computer and to provide a demodulated front-end signal to the demodulator over the hardware interface; and a forward error correction (FEC) unit having a second input and a second output, the second input of the FEC unit being configured to interface with the demodulator of the computer and to receive a demodulated signal from the demodulator over the hardware interface, the demodulated signal being a demodulation of the demodulated front-end signal, and the second output of the FEC unit being configured to interface with the decoder of the computer and to provide an FEC signal to the decoder over the hardware interface. | 08-27-2009 |
20090249417 | CMTS UPSTREAM CHANNEL BANDWIDTH SCHEDULER - In one embodiment, a Cable Modem Termination System (CMTS) generates a bandwidth grant message corresponding to a time segment. The CMTS identifies a portion of the time segment to be assigned according to received bandwidth request messages originating from downstream cable modems. The CMTS determines whether a remaining portion of the time segment can accommodate more than N broadcast contention slots, and if so, selects at least one of the cable modems for receiving an upstream bandwidth boost. | 10-01-2009 |
20100017833 | METHOD, CABLE MODEM AND A DEVICE FOR PROVIDING VIDEO TO A CUSTOMER PREMISES EQUIPMENT - A method for providing video to a customer premises equipment, the method includes: receiving, by a radio frequency interface of a cable modem, radio frequency signals; receiving by a data tuner out of multiple tuners of the cable modem, radio frequency signals that convey data; detecting, by a monitor of the cable modem, a request to receive a certain video channel that is being broadcasted; wherein the request is sent to the cable modem from a customer premises equipment; tuning a certain tuner out of multiple tuners of the cable modem, in response to a mapping between radio frequencies and video channels, to receive the certain video channel; filtering out data layer encapsulation information that encapsulates certain video channel information; and transmitting certain video channel information to the customer premises equipment. | 01-21-2010 |
20100023988 | System And Method For Suppressing Silence In Voice Traffic Over A Wireless Communication Medium - A method and system for increasing the efficiency of providing bandwidth for voice traffic to a data provider via communication mediums is provided. This is generally accomplished by not transmitting any data during the silence periods and playing out background noise (i.e., comfort noise) at the other end, to obtain significant bandwidth savings. | 01-28-2010 |
20100043041 | INTER-GATEWAY CLONED DEVICE DETECTOR USING PROVISIONING REQUEST ANALYSIS - In one embodiment, a cloned cable modem detector is configured to assemble a table associating cable modem physical addresses to Cable Modem Termination Systems (CMTSs) according to provisioning requests forwarded from the CMTSs. When one of the provisioning requests associates a cable modem physical address with a different CMTS than an existing association in the table, the detector outputs an indication of cable modem cloning. | 02-18-2010 |
20100083330 | SCHEDULING FOR RF OVER FIBER OPTIC CABLE [RFoG] - A method for use in an RFoG cable network calls for allocating upstream bandwidth to CM devices, wherein allocating bandwidth includes selecting a start time and allocating respective time slots relative to the selected start time to at least one of the requesting CM devices; and further, allocating the same timeslots over multiple selected upstream channels, thereby aligning upstream transmissions from the requesting CMs across the selected upstream channels. Several embodiments are disclosed to enable DOCSIS 3.0 type scheduling over an RFoG network. | 04-01-2010 |
20100095338 | CABLE MODEM AND METHOD FOR UPDATING DIGITAL CERTIFICATES OF THE CABLE MODEM - A method for updating digital certificates of a cable modem (CM) sends a request packet to a certificate authority if the CM needs to update a current digital certificate. A feedback packet responsive to the request packet is obtained from the certificate authority. A new digital certificate contained in the feedback packet is written into a storage system of the CM to replace the current digital certificate. | 04-15-2010 |
20100095339 | Method and apparatus for designing a communication mechanism between embedded cable modem and embedded set-top box - The present disclosure discloses a digital communication between the between embedded cable modem (eCM) and embedded set-top box (eSTB) via a shared memory. The communication is carried out by packet transfer mechanism as per the protocol without adding any extra header overhead. The communication link is established between the eSTB and eCM mainly in layer 2 and partly in layer 1 according to an implementation of the OSI model. Further, eSTB is used as an eSAFE device coupled to eCM where the eCM and eSTB are considered to be placed on two SoCs with a separate CPU to each SoC (System-On-Chip) with a shared memory (via high speed data bus protocol). DMA (Direct Memory Access) engines are used to accelerate data transfer and to reduce load. DMA of only eCM, SoC is used to minimize hardware resources. | 04-15-2010 |
20100100918 | Multi-Port Entry Adapter, Hub and Method for Interfacing a CATV Network and a MoCA Network - A cable television (CATV) entry adapter interfaces to a CATV network and and serves as a hub in a Multimedia over Coax Alliance (MoCA) network. MoCA signals are bypassed around the CATV communication paths within the entry adapter to maintain adequate signal strength and to allow a passive port of the entry adapter to be used as part of the MoCA network. MoCA signals are suppressed from exiting the CATV entry adapter onto the CATV network. | 04-22-2010 |
20100100919 | METHOD FOR REDUCING UPSTREAM INGRESS NOISE IN CABLE DATA SYSTEM - In a method of reducing and diagnosing upstream ingress noise in cable data system utilize a MAC/MAP management messages via a downstream path based on Cable Systems Interface Specification (DOCSIS) to provide precise control of gates deployed near the user side provide a powerful algorithm for CATV operators to mitigate ingress noise problem. | 04-22-2010 |
20100131999 | UPSTREAM POWER CONTROL FOR MULTIPLE TRANSMIT CHANNELS - A novel apparatus for and method of upstream power control for multiple transmit channels. The invention is particularly useful in environments that include two level amplification, wherein the first level corresponds to each channel separately and the second level corresponds to the joint sum of all the channels. When working with two-level amplification, changing the joint sum amplification is permitted during specific time periods known as “CMTS re-configuration time” in the DOCSIS specification. The mechanism functions to maintain an optimal transmit power operating point of the PGA using self-configuration without any need to receive permission from an exterior control entity such as the cable head-end thus bypassing the prior art requirement of waiting for a global reconfiguration time from the CMTS (i.e. when the specification assures that there is sufficient time to change the PGA gain). This can be achieved with high confidence if there is sufficient quiet time (which is calculated) to perform the self-configuration of the PGA within a specific period of time. | 05-27-2010 |
20100154016 | MULTI-CHANNEL RANGING FOR A CABLE MODEM - In one example, a Cable Modem Termination System (CMTS) sends first bandwidth allocation messages to a first upstream transmit interface on a cable modem and send second bandwidth allocation messages to a second upstream transmit interface on the cable modem. The bandwidth allocation messages indicate transmit windows for the cable modem to range over the interfaces. The transmit windows included in the first bandwidth allocation messages are spaced based on receipt of ranging requests from the second upstream transmit interface, and the transmit windows included in the second bandwidth allocation messages are spaced based on receipt of ranging requests from the first upstream transmit interface. | 06-17-2010 |
20100154017 | APPARATUS AND METHODS FOR MOVING CABLE MODEMS BETWEEN UPSTREAM CHANNELS - Disclosed are apparatus and methods for managing upstream channels on a per cable modem basis. In certain embodiments, one or more thresholds are defined for each of a plurality of upstream logical channels of a headend system for receiving data from a plurality of cable modems (or other types of access nodes). Each defined threshold corresponds to a measurable parameter of the corresponding upstream logical channel. One or more metrics are collected for each cable modem of each upstream logical channel. It is determined whether to downgrade a selected cable modem to a selected one of the logical channels that has a lower performance level than the selected cable modem's current logical channel. Such downgrade determination is based on whether the selected cable modem's collected one or more metrics have failed a condition of the one or more defined thresholds and whether a percentage of a total of the cable modems of such current logical channel that have failed a condition for the one or more defined thresholds is less than a predefined percentage level. The selected cable modem is then caused to move from the current logical channel to the selected logical channel when the percentage of the total cable modems that have failed is below a predefined level if such selected logical channel is available. Otherwise, the current logical channel's modulation profile may be altered when the percentage of the total cable modems that have failed is above (or equal to) the predefined level. | 06-17-2010 |
20100154018 | METHOD AND APPARATUS FOR TRANSMITTING PACKET FILTERING INFORMATION - Disclosed are a method and an apparatus of transmitting packet filtering information. A DSG channel information management server included in a digital cable broadcasting transmission headend combines a packet address and information related to the packet address and generates the combined information to be a single file, the packet address being used for filtering packets received by a cable modem contained in a cable broadcasting receptor, for each data type. The generated file is transmitted from a CMTS to the cable modem through a packet having a designated address mutually agreed upon between the headend and the cable modem, the cable modem obtains information for selectively filtering the received packets, from the received file, and constructs a filter. Data selectively filtered through each constructed filter is transmitted to a corresponding process module included in the cable broadcasting receptor that processes broadcasting program information, conditional access information, and the like. | 06-17-2010 |
20100162336 | CABLE MODEM ACCESS USING LAYER-2 MESSAGING - In one embodiment, a method comprises receiving notification of a cable modem operational issue for a cable modem and establishing layer-2 logging communications with the cable modem. The method comprises receiving a message from the cable modem, the message generated by the cable modem in response to the operational issue and indicating the operational issue associated with the cable modem. | 06-24-2010 |
20100162337 | APPARATUS AND METHOD FOR PROCESSING VIDEO SERVICE FLOW USING DUAL SCHEDULER FOR HEADEND CABLE MODEM IN HFC NETWORK - Provided is an apparatus and method for providing a video service flow using a dual scheduler for a headend cable modem in a Hybrid Fiber Coax (HFC) network. The apparatus may include: a service flow processing unit to determine whether a packet corresponds to a registered video service flow, when the packet is received; and at least one channel transmitter to schedule a packet corresponding to the registered video service flow and a packet not corresponding to the registered video service flow so that a transmission rate of the registered video service flow is guaranteed, and to thereby transmit the packets. | 06-24-2010 |
20100223650 | WIDEBAND FAULT CORRELATION SYSTEM - A wideband cable network system includes multiple wideband cable modems and a Wideband Cable Modem Termination System (WCMTS). The WCMTS operates a Media Access Control (MAC) layer that communicates with the cable modems over multiple different downstream Radio Frequency (RF) channels and upstream RF channels. A wideband failure analytic manager tracks fault indicators associated with the MAC layer communications. Separate failure analytics are then generated, indexed, and correlated for different cable modems and different upstream or downstream channels. | 09-02-2010 |
20100251316 | COAX AND IP HYBRID DIGITAL TV AND VOD SYSTEM - Methods and apparatus are described for providing digital information and/or data services over hybrid network infrastructures including both IP and coax transmission media. | 09-30-2010 |
20100251317 | SYSTEMS AND METHODS FOR CONNECTING LARGE NUMBERS OF CABLE MODEMS - Identifiers are assigned to devices communicating via a number of virtual channels. If additional identifiers are needed, one or more new virtual channels are created and the identifiers are reused for the new virtual channel. | 09-30-2010 |
20110078755 | Passive Optical Network Data Over Cable Service Interface Specification Upstream Proxy Architecture Over the Next Generation Hybrid Fiber-Coaxial Networks - An apparatus comprising a wavelength division multiplexer (WDM), an optical network unit (ONU) coupled to the WDM, a passive optical network (PON) data over cable service interface specification (DOCSIS) upstream proxy (PDUP) coupled to the ONU and configured to couple to a coaxial cable, and a downstream (DS) optical/electrical (O/E) converter coupled to the WDM and configured to couple to the coaxial cable. An apparatus comprising a WDM, an optical line terminal (OLT) coupled to the WDM, a cable model termination system (CMTS) coupled to the OLT via an upstream external physical (PHY) interface (UEPI), and a DOCSIS and a Quadrature Amplitude Modulation (QAM) unit coupled to the WDM and the CMTS. | 03-31-2011 |
20110131624 | METHOD AND APPARATUS FOR SERVICE CONFIGURATION CONVERSION IN DOSCIC-OVER-PON SYSTEM - A method for configuration conversion includes: switching a working mode to a virtual Cable Modem (CM) mode according to a virtual mode switching notification message sent by an Optical Line Terminal (OLT); obtaining first configuration information from an Operations Support System (OSS), the first configuration information being DOCSIS-based configuration information; converting the first configuration information into second configuration information, the second configuration information being PON-based configuration information; implementing local parameter configuration according to the PON-based second configuration information; and sending a configuration complete message to the OLT after the configuration is complete. With the present disclosure, a performance bottleneck problem that might otherwise exist within the OLT art can be solved, and a service provisioning efficiency can be improved. | 06-02-2011 |
20110167463 | Fast Initialization of Multi-Mode Devices - Systems and methods for initializing a dual mode device can use a network type flag to determine whether a network type is set. The dual mode device can initialize using a network type corresponding to the network type flag. In some implementations, if the network type is incorrect, the dual mode device can update the network type flag and restart the dual mode device. | 07-07-2011 |
20110185394 | METHOD OF CATV CABLE SAME-FREQUENCY TIME DIVISION DUPLEX DATA TRANSMISSION - Method of bidirectional Time Division Duplex (TDD) data transmission over the same RF frequency ranges of a CATV cable system. The system's slave modem clocks are time synchronized to the master clock of a master modem. The master-to-slave signal propagation times are determined and used to precisely schedule transmissions with de-minimis guard times. The frequency range may be chosen to be in the high frequency CATV range around 1 GHz to maximize backward compatibility with legacy systems, and this frequency may in turn be subdivided into multiple frequencies. In some embodiments, the CATV cable tree may be further partitioned into multiple TDD domains, and multiple local master modems, connected by a special-use optical fiber, may communicate with multiple local slave modems. The system may use MAP allocation schemes that may frequently reallocate TDD time slots and frequencies according to current or projected slave modem data needs. | 07-28-2011 |
20110197246 | Broadcast Media Management Router Video Server - A multi wide area network (WAN) media content router, remotely controlled, and located from client reception stations, that enables video stream and multimedia content reception from terrestrial, satellite, internet protocol (IP) sources, 3G, and 4G. The router receives a plurality of direct transport streams from these different transmission media types without compression and routes these signals based upon predetermined protocol. The router receives multiple signals, discerns among the signals of different transmission media types, assesses the quality of the signals received, and delivers the highest quality signal to several multiplexed channels as an output in the form of a transport stream or packet data to a plurality of clients. | 08-11-2011 |
20110219418 | WIDEBAND CABLE MODEM AND CHANNEL LOCKING METHOD - A wideband cable modem includes a plurality of tuners and a plurality of central frequencies each corresponding to one of a plurality of frequency ranges. Each frequency range is divided into a plurality of frequency segments. A scan controlling thread of the wideband cable modem retrieves one of the central frequencies corresponding to one of the frequency ranges, and controls a plurality of channel locking threads to synchronously scan the plurality of frequency segments of the corresponding frequency range to lock onto a downstream channel according to the retrieved central frequency. Each of the channel locking threads of the wideband cable modem controls one of the tuners to scan one of the frequency segments to lock onto a downstream channel. | 09-08-2011 |
20110252453 | Information Device - A device for obtaining, storing and displaying information from a remote server, the device has a modem for establishing communication sessions with the remote server. A memory coupled to the modem stores the obtained information, and a display is coupled to the memory for displaying the stored information. The device automatically and periodically communicates with the remote server for obtaining the information. | 10-13-2011 |
20110271317 | Set-Top-Box Having a Built-In Master Node That Provides an External Interface for Communication and Control in a Power-Line-Based Residential Communication System - A set-top-box (STB) provides capability for monitoring and control of power usage and the ability to establish communications. A smart residential service system (SRSS) is provided that uses power line communication (PLC) technology to provide secure in-home LAN communication and also to monitor and provide remote control of connected appliances in the home. An embodiment combines the STB with a master unit (MST) that is used with PLC to meet the requirements of the central device in the SRSS. | 11-03-2011 |
20110314509 | CABLE MODEM AND DOWNSTREAM CHANNEL LOCKING METHOD - A cable modem locks one of downstream channels and receives a plurality of frequency plan descriptors from a cable modem terminal system (CMTS) over the locked downstream channel. Each frequency plan descriptor includes a fragment quantity field, a fragment sequence number field, and a frequency information field. The cable modem determines if the plurality of frequency plan descriptors transmitted by the CMTS are all received according to the fragment quantity field and the fragment sequence number field of one currently received frequency plan descriptor. The cable modem obtains frequency plan of the cable modem configured by the CMTS according to the frequency information fields if the plurality of frequency plan descriptors are all received, and then locks other downstream channels according to the obtained frequency plan. | 12-22-2011 |
20120030724 | SYSTEM AND METHOD FOR DETECTING HACKED MODEMS - A system, method, and computer program product are provided for detecting hacked modems in a cable network system. A cable Internet service provider can provide the disclosed heuristic to determine whether a particular cable modem has likely been hacked by obtaining a score corresponding to this likelihood. This score, as well as information regarding failure and success of various tests, can be used to generate a report identifying the likelihood that various modems have been hacked. | 02-02-2012 |
20120047545 | TOPOGRAPHIC FRAUD DETECTION - Methods and systems to detect topographic fraud are provided herein. The system includes a Cable Modem Termination System (CMTS) to periodically poll active cable modems and generate polling data. The system also includes a processor and a memory coupled to the CMTS. The processor is configured to, based on instructions in the memory, periodically determine a current geographic location for each polled cable modem based on the polling data from the CMTS, determine a geographic radius within which each polled cable modem is to be operated in and determine cable modems whose current geographic location is outside of their geographic radius. | 02-23-2012 |
20120079547 | Multimedia Network Interface Device with Table-Based Connection Management - A set-top box or other network interface device incorporates functionality for distributing multimedia signals to multiple televisions or other terminal devices within a residence or other facility. In one aspect, the network interface device comprises a processor, a memory coupled to the processor, first network interface circuitry for receiving multimedia signals from an access network, and second network interface circuitry for communicating over a local network with a plurality of terminal devices. The network interface device is operative under control of the processor to deliver selected ones of the multimedia signals to the terminal devices responsive to control commands received from the terminal devices. The memory of the network interface device stores a connection management table indicating for each of the terminal devices at least a selected one of the multimedia signals and status information for that terminal device. | 03-29-2012 |
20120284765 | Sharing of Subscriber-Recorded Digital Video Recorder Content - Digital data associated with recorded programs are uploaded to a Head End facility from user devices (e.g., set-top boxes) in a media distribution network. The Head End facility stores a library of the Digital Video Recording (DVR) assets for programs and makes them available, by streaming, to user devices, including user devices that do not have DVR capability. Techniques are also provided to efficiently upload a DVR asset simultaneously in segments or chunks from multiple user devices. | 11-08-2012 |
20120291083 | Media Files Delivery System And Method - A file server delivers media files in unicast mode to a media gateway device in response to user requests, and a FCAST/NORM media streamer delivers a stream of these media files in multicast mode to the media gateway device. By using a file server operating in unicast mode and a FCAST/NORM media streamer delivering a stream of these media files in multicast mode, it is possible to switch seamlessly between the two modes in an embodiment. In an embodiment of the invention, a media gateway device includes a cache memory for storing media files from the file server and/or the FCAST/NORM media streamer; and a controller that controls delivery of media files from the cache memory to the user and transmits user requests for media files to the file server when the cache memory does not contain the media files requested by the user. Thus, the controller requests media files from the file server only when the media files requested by the user are not cached. Otherwise, the media files requested by the user are fetched from the cache memory for delivery to the user. In this manner, the media files requested by the user will be delivered by the file server in unicast mode only when the FCAST/NORM media streamer has not supplied such files to the gateway device for caching. | 11-15-2012 |
20120291084 | DISTRIBUTED CABLE MODEM TERMINATION SYSTEM WITH SOFTWARE RECONFIGUABLE MAC AND PHY CAPABILITY - Distributed and highly software reconfigurable CMTS (CMRTS) device, based on MAC and PHY units with FPGA and DSP components, for a HFC CATV network. The various CATV RF modulators, such as QAM modulators, may be divided between QAM modulators located at the cable plant, and remote QAM modulators ideally located at the fiber nodes. A basic set of CATV QAM data waveforms may optionally be transmitted to the nodes using a first fiber, and a second set of IP/on-demand data may be transmitted to the nodes using an alternate fiber or alternate fiber frequency, and optionally using other protocols such as Ethernet protocols. The nodes will extract the data specific to each neighborhood and inject this data into unused QAM channels, thus achieving improved data transmission rates through finer granularity. A computerized “virtual shelf” control system for managing and reconfiguring the FPGA and DSP based CMTRS units is also disclosed. | 11-15-2012 |
20130067525 | SERVICE PROVISIONING DEVICE WITH INTEGRATED CABLE MODEM - A cable service provisioning device includes an integrated cable modem to enable a cable provider to send configuration commands. The device includes an input component that receives an input signal from a cable network and an output component that provides an output signal to a customer premises. The device further includes a cable modem configured to receive configuration commands from a cable head end, radio frequency filters configured to selectively pass a portion of the input signal; and a radio frequency switchboard coupled to the input component, the output component, and the one or more radio frequency filters. A processor is coupled to the cable modem and the radio frequency switchboard and is configured to control the radio frequency switchboard to selectively enable or disable individual radio frequency filters in response to the configuration commands received from the cable head end. | 03-14-2013 |
20130074138 | UPSTREAM EXTERNAL PHY INTERFACE FOR DATA AND CONTROL PLANE TRAFFIC - Techniques are provided for controlling downstream Converged Cable Access Platform (CCAP) access points. At the CCAP access point having a network interface and a coaxial interface, control plane information is received from a Cable Modem Termination System (CMTS) via the network interface, where the control plane information is designed to configure the CCAP access point to enable communication over the network interface and the coaxial interface. At the CCAP access point, data plane and control plane information is transmitted to the CMTS, and may include information from one or more customer termination devices. | 03-21-2013 |
20130276047 | DOCSIS OUT-OF-BAND CONTROL SIGNAL FREQUENCY CONVERSION FOR LEGACY SET-TOP BOXES - Techniques are provided for up-converting a downstream set-top box control signal to a frequency that is above a cable television system upstream communications band. The downstream set-top box control signal is down-converted to a frequency in a set-top box control band and injected into a set-top box communications pathway. The downstream set-top box control signal may be up-converted from baseband or from the set-top box control band to a frequency in cable television system downstream communications band and transmitted on a DOCSIS RF channel. | 10-17-2013 |
20130291044 | LOW-COST LEAKAGE DETECTOR FOR A DIGITAL HFC NETWORK - A handheld leakage detector for finding digital QAM signal leaks in a HFC network, comprises a radio receiver, a leakage receiver, leakage sampler, a correlator, and a display. The radio receiver receives samples of the QAM signal taken from the HFC network, called “reference samples.” The leakage receiver receives a QAM leakage signal, which is related to the QAM signal from the HFC network. The leakage sampler samples the leakage signal to form leakage samples. The correlator performs a coherent cross-correlation of the reference samples and the leakage samples, to produce a correlation peak. A value is determined from the correlation peak and displayed on the display. The value generally becomes more optimized as the detector approaches the leak. The leak is sought by iteratively changing the position of the detector until the displayed value becomes substantially optimized or the leak is found. | 10-31-2013 |
20130340020 | Multi-Mode Modem - A modem system may include modems that have multiple upstream transmitters for transmitting signals upstream in a communication network. In some embodiments herein, one or more of those upstream transmitters may be retasked to transmit downstream signals for reception at devices within a modem's premises. The downstream signal may be modulated differently from its original modulation as received by the modem, and may be modulated in a manner that can be received by legacy components on the premises, such as analog televisions. | 12-19-2013 |
20140013373 | INTERACTIVE SERVICE SYSTEM, INTERACTIVE SYSTEM AND INTERACTIVE METHOD THEREOF - An interactive system includes a server system, a modem, and a terminal device. The server system provides service content that may include a video stream and selection items. The modem connects to the server system via a network. The modem can transmit information according to priority levels. The terminal device connects to the modem. The terminal device is configured to assign a highest transmission priority level to a selection result of a selected item selected by a user from the selection items. The server system is configured to provide response information according to the selection result and transmit the response information in a unicast manner. | 01-09-2014 |
20140026174 | APPLYING HEURISTICS TO MANAGE MULTICAST SUBSCRIPTIONS WITHIN COMPUTER NETWORKS - An access node comprises a control unit that determines an anticipated working set of television channels based on a historically delivered working set of television channels to which a subscriber network has previously subscribed. The anticipated working set indicates a time at which the subscriber network is expected to subscribe to a different set of channels. The access node includes at least one interface that couples the access node to the subscriber network, that prior to the time at which the subscriber network is expected to subscribe to the different set of channels, subscribes to the different set of television channels in accordance with the anticipated working set such that media content associated with the different channels of the anticipated working set is available for delivery to the subscriber network at the time during which the access node expects the subscriber network to subscribe to the different set of channels. | 01-23-2014 |
20140040966 | Multi-Channel Multi-Stream Video Transmission System - In one aspect the present invention provides a mechanism to carry analog video, digital video and other types of data over a single cable simultaneously between the camera modem and the monitor modem. The analog video has low latency and can be used as real time monitoring, while the digital video is usually compressed high definition video and carried in IP packets. In the camera modem, the analog video is digitized and decoded into digital video, which is further compressed by a near-zero latency video encoder. All types of data, including the compressed analog video and digital video, are multiplexed together to form a single digital stream and transmitted over the cable. In the monitor modem at the other end of the cable, the near-zero latency video stream originated from analog video is de-multiplexed from the single digital downstream, decompressed and finally the corresponding analog video is reconstructed. | 02-06-2014 |
20140059632 | Integrated Cable Modem - The present invention is an integrated cable modem tuner. In one embodiment, the upstream path and the downstream path are integrated on a common semiconductor substrate. The down-stream path can include a TV tuner and digital receiver portion that is integrated on a common semiconductor substrate with the power amplifier of the upstream path. In another embodiment, the TV tuner is implemented on a first semiconductor substrate and the digital receiver portion and the power amplifier are configured on a second semiconductor substrate. However, the two substrates are mounted on a common carrier so that the cable modem appears to be a single chip configuration to the user. | 02-27-2014 |
20140150041 | DISTRIBUTED CABLE MODEM TERMINATION SYSTEM WITH SOFTWARE RECONFIGUABLE MAC AND PHY CAPABILITY - Distributed and highly software reconfigurable CMTS (CMRTS) device, based on MAC and PHY units with FPGA and DSP components, for a HFC CATV network. The various CATV RF modulators, such as QAM modulators, may be divided between QAM modulators located at the cable plant, and remote QAM modulators ideally located at the fiber nodes. A basic set of CATV QAM data waveforms may optionally be transmitted to the nodes using a first fiber, and a second set of IP/on-demand data may be transmitted to the nodes using an alternate fiber or alternate fiber frequency, and optionally using other protocols such as Ethernet protocols. The nodes will extract the data specific to each neighborhood and inject this data into unused QAM channels, thus achieving improved data transmission rates through finer granularity. A computerized “virtual shelf” control system for managing and reconfiguring the FPGA and DSP based CMTRS units is also disclosed. | 05-29-2014 |
20140282783 | HYBRID FIBER-COAXIAL (HFC) CABLE COMMUNICATION SYSTEMS HAVING WELL-ALIGNED OPTICAL AND RADIO-FREQUENCY LINKS TO FACILITATE UPSTREAM CHANNEL PLANS HAVING HIGH AGGREGATE DATA CAPACITY - An HFC cable communication system comprising: a CMTS having a first attenuator to attenuate one or more upstream signals applied to the CMTS; an optical link having a dynamic range and comprising an optical receiver having a second attenuator to attenuate the upstream signal(s) and an optical transmitter having a third attenuator to attenuate the upstream signal(s); a coaxial RF link comprising one or more RF amplifiers having a fourth attenuator to attenuate the upstream signal(s); and one or more subscriber modems to generate the upstream signal(s) at respective transmit RF signal levels. The CMTS implements a long loop ALC to set the transmit RF signal level(s) based on received RF signal levels of the upstream signal(s) at the CMTS. Respective values for the first, second, third and fourth attenuators are selected based on the dynamic range of the optical link so as to facilitate implementation of the long loop ALC and effective transmission of upstream information carried by the upstream signal(s). | 09-18-2014 |
20150334467 | Upstream External PHY Interface for Data and Control Plane Traffic - An access point that supports downstream and upstream communication from and to a Modular Cable Modem Termination System (M-CMTS) core to and from customer premises equipment (CPE), respectively, implements an Upstream External PHY Interface (UEPI) protocol with the M-CMTS core for control of the upstream communication. The access point receives from the M-CMTS core first UEPI control messages comprising information to configure one or more pathways with the access point for data plane upstream communication and control plane communication. The access point transmits to the M-CMTS core second UEPI control messages including a spectrum management message to manage upstream spectrum between the access point and the M-CMTS core, and a range request message to request ranging information so that the CPE can transmit upstream packets within an upstream timeslot, wherein at least one second UEPI control message is forwarded from the (CPE). | 11-19-2015 |
20150358669 | CABLE MODEM APPARATUS, BROADCASTING SIGNAL RECEIVING APPARATUS, BROADCASTING SIGNAL TRANSMITTING APPARATUS AND CONTROL METHOD THEREOF - A cable modem apparatus configured to switch between communicating over a plurality of channels and a channel different from the plurality of channels. | 12-10-2015 |
20150373405 | BROADCAST SIGNAL RECEIVING APPARATUS, INFORMATION APPLIANCE DEVICE AND CONTROL METHOD THEREOF - A broadcast signal receiving apparatus, an information appliance device and a control method thereof are disclosed. The broadcast signal receiving apparatus includes: a communicator configured to connect with a headend and receive a broadcast signal; a signal processor configured to process the broadcast signal; and a controller configured to, in response to the broadcast signal receiving apparatus entering a standby mode, control the communicator to perform an operation of maintaining a connection with the headend based on a preset period, and control the broadcast signal receiving apparatus to switch to a normal mode in response to an external event, while maintaining the connection with the headend. Thus, the connection with the headend is maintained even in the standby mode, and it is thus possible to immediately switch over from the standby mode to the normal mode, thereby decreasing the power consumption and minimizing a user's standby time. | 12-24-2015 |
20160142759 | Channel Scanning - Methods, systems, and apparatus can provide channel scanning. In various examples, a channel scanning module can instruct scanning of multiple channels within a wideband frequency range by assigning channels to demodulators to attempt to lock onto a signal at the assigned channel. In other examples, a channel scanning module can instruct scanning for downstream channels by assigning channels to multiple narrowband tuners and multiple demodulators to attempt to lock onto a signal on the assigned channel. | 05-19-2016 |
20160205430 | METHOD AND SYSTEM FOR FAST CHANNEL SCAN FOR DOCSIS CABLE MODEM | 07-14-2016 |
20160380781 | DISTRIBUTED CCAP CABLE MODEM TERMINATION SYSTEM - Distributed CMTS device for a HFC CATV network serving multiple neighborhoods by multiple individual cables, in which at least some and often all of the QAM modulators that provide data for the individual cables are remote QAM modulators ideally located at the fiber nodes. A CCAP set of IP/on-demand data is transmitted to the nodes using an optical fiber, often using digital protocols such as Ethernet protocols. Optionally a basic set of legacy CATV QAM data, transmitted using RF waveforms transposed to optical frequencies, may also be transmitted to the nodes using either the same or different optical fiber. The nodes extract the data specific to each neighborhood, and inject this data into unused cable QAM channels along with any optional legacy CATV QAM waveforms as desired, thus achieving improved data transmission rates through finer granularity. A computerized “virtual shelf” control system for this system is also disclosed. | 12-29-2016 |