Patent application number | Description | Published |
20090016218 | METHOD OF CONTROLLING DOWNSTREAM TRAFFIC FLOW IN CABLE NETWORK HEADEND - Provided is a method of controlling the flow of downstream traffic in a cable network headend. The method includes the steps of: establishing a session with the modulator; transferring traffic to the modulator over the session; and receiving a buffer-status reporting message reporting the status of a receive buffer from the modulator while transferring the traffic. The method reports buffer-status information of an Edge-Quadrature Amplitude Modulator (E-QAM) to a traffic source, thereby enabling control of the transfer rate of traffic transferred from the traffic source to the E-QAM and preventing overflow/underflow of a receive buffer, packet loss and deterioration of channel use. | 01-15-2009 |
20090103563 | PACKET TRANSMITTING METHOD AND DEVICE - A packet transmission device of a physical layer receives a plurality of packets from a media access control layer that is an upper layer of the physical layer, and detects a packet including a sync message from the packets. The packet transmission device receives first time information for synchronization from the media access control layer, inserts first time information into the sync message, and transmits packets at a predetermined data rate. | 04-23-2009 |
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 |
20090125966 | DIGITAL CABLE BROADCASTING RECEIVER INCLUDING SECURITY MODULE AND METHOD FOR AUTHENTICATING THE SAME - A digital cable broadcasting receiver and a method of authenticating the digital cable broadcasting receiver, the digital cable broadcasting receiver includes: a security module unit to perform a device authentication process using two-way communication with a Head End (HE) system, and to transmit authentication verification information generated by the device authentication process to a receiver central processing unit (CPU); a demodulation unit to demodulate a broadcasting signal received from a tuner based on the authentication verification information, and to extract transport stream data; the receiver CPU to control power of the demodulation unit based on the authentication verification information; and a decoding unit to restore the transport stream data into image data. | 05-14-2009 |
20090135850 | METHOD AND APPARATUS OF TRANSMITTING RESOURCE-REQUEST FOR EFFICIENTLY USING SERVICE IDENTIFIER (SID) RESOURCE IN CABLE MODEM SYSTEM SUPPORTING UPSTREAM CHANNEL-BONDING - A method and apparatus of transmitting a resource-request for efficiently using a Service Identifier (SID) resource in a Cable Modem (CM) system supporting upstream channel-bonding relates a method of transmitting an upstream packet in the CM system for performing transmission using a plurality of upstream channels. | 05-28-2009 |
20090138720 | METHOD AND APPARATUS FOR DETECTING MOVEMENT OF DOWNLOADABLE CONDITIONAL ACCESS SYSTEM HOST IN DCAS NETWORK - A method of operating a Secure Micro (SM) of a host in a Conditional Access (CA) system is provided. The method includes: receiving, by the SM, a SecurityAnnounce message including a certificate of an AP server connected with a host; determining, by the SM, whether a public key stored in a memory in advance exists, and setting a flag as a first state when the public key stored in advance exists; verifying, by the SM, a digital signature with respect to the SecurityAnnounce message using the public key stored in advance; and acquiring, by the SM, another public key of the AP server by parsing the certificate and setting the flag as a second state based on whether the flag corresponds to the first state when the SM is unable to verify the digital signature. | 05-28-2009 |
20090138957 | METHOD AND APPARATUS OF MANAGING ENTITLEMENT MANAGEMENT MESSAGE FOR SUPPORTING MOBILITY OF DCAS HOST - A method of supporting a mobility of a Downloadable Conditional Access System (DCAS) host is provided. The method includes: by the second authentication proxy server: performing mutual authentication with a secure micro of the host to generate a session key; requesting an integrated personalization system to download a secure micro client to the host, wherein the secure micro client is encoded using the session key; and transmitting, to a DPS, mapping information between the second authentication proxy server and the secure micro of the host, wherein, in response to receiving the mapping information, the DPS instructs a CAS server to transmit an entitlement management message to the network of the second authentication proxy server without transmitting the entitlement management message to the network of the first authentication proxy server. | 05-28-2009 |
20090141655 | SYSTEM AND METHOD FOR MONITORING HEAD END CABLE MODEM IN CABLE NETWORK - Disclosed are a system and method for monitoring a headend cable modem on a digital cable network, which may monitor a headend cable modem using a configuration management message capable of controlling the headend cable modem. The system includes a message header unit for monitoring the headend cable modem by exchanging a configuration management message including configuration information for controlling channel boding of the headend cable modem and state information of the configuration information with the headend cable modem; and a message varying unit including the configuration information corresponding to the message type information and the state information. | 06-04-2009 |
20090141739 | METHOD AND APPARATUS FOR PROCESSING BANDWIDTH-ALLOCATION INFORMATION IN CABLE MODEM WITH MULTIPLE TRANSMITTING AND RECEIVING CHANNELS - A method and apparatus for processing bandwidth-allocation information in a cable modem (CM) with multiple transmitting and receiving channels is provided. A method of processing bandwidth-allocation information in a CM with multiple transmitting and receiving channels, the method including: receiving, by a Mini-slot Allocation Packet (MAP) pre-processor, MAP data from a Media Access Control (MAC) Management Message (MMM) processor, reconstructing the MAP data into an Information Element (IE), and sorting bandwidth-allocation IEs between channels according to a time sequence; reporting, to an upstream scheduler, whether upstream data is generated, and returning, by the upstream scheduler, the bandwidth-allocation information for upstream data transmission of the IE sorted by the MAP pre-processor; and performing, by a back-off controller, a back-off function and returning contention-based resource-request opportunity information when the back-off controller receives a back-off driving signal from the upstream scheduler. | 06-04-2009 |
20090141784 | CABLE MODEM AND DATA RECEIVING METHOD THEREOF - Disclosed are a cable modem and a data receiving method thereof. The cable modem includes a downlink channel retrieval processing unit to retrieve a downlink channel, receive an entire channel information message through the retrieved downlink channel, and receive a broadcasting supplementary data message when the entire information message is valid; a channel information processing unit to receive broadcasting supplementary data using the broadcasting supplementary data message; an uplink channel retrieval processing unit to retrieve an uplink channel using the entire channel information message; and a channel information managing unit to store and manage main data receiving channels capable of receiving the entire channel information message and the broadcasting supplementary data. | 06-04-2009 |
20090141901 | TERMINAL AND METHOD OF INCLUDING PLURALITY OF CONDITIONAL ACCESS APPLICATIONS IN BROADCASTING SYSTEM - A method of selectively using a CA application of a terminal, the method including: searching a CA application table when a service of fee-based contents is requested, and determining whether a corresponding CA application is installed; and extracting a key required for descrambling a broadcasting signal using the CA application, when the CA application is installed based on a result of the determining. | 06-04-2009 |
20090144539 | HEADEND SYSTEM FOR DOWNLOADABLE CONDITIONAL ACCESS SERVICE AND METHOD OF OPERATING THE SAME - A method of operating a headend system for a downloadable conditional access service, the method including: receiving, by an Authentication Proxy (AP) server, basic authentication information from a Downloadable Conditional Access System (DCAS) host, the basic authentication information being required to authenticate the DCAS host; transmitting, by the AP server, the basic authentication information to an external trusted authority device which authenticates the DCAS host; generating, by the AP server, a session key for encrypting/decrypting a secure micro client using a session key sharing factor; obtaining, by the AP server, download-related information of the secure micro client from a DCAS Provisioning Server (DPS); and commanding, by the AP server, an Integrated Personalization System (IPS) server to download the secure micro client to the DCAS host based on the download-related information, the secure micro client being encrypted by the session key. | 06-04-2009 |
20090144541 | METHOD AND APPARATUS OF MUTUAL AUTHENTICATION AND KEY DISTRIBUTION FOR DOWNLOADABLE CONDITIONAL ACCESS SYSTEM IN DIGITAL CABLE BROADCASTING NETWORK - A method and apparatus of X.509 certificate-based mutual authentication and key distribution for a Downloadable Conditional Access System (DCAS) in a digital cable broadcasting network is provided for composing a software-based secure DCAS in various Conditional Access Systems (CASs) based on an embodiment form of Conditional Access (CA) application for CA of digital cable broadcasting. | 06-04-2009 |
20090144544 | CABLE NETWORK SYSTEM AND METHOD FOR CONTROLLING SECURITY IN CABLE NETWORK ENCRYPTED DYNAMIC MULTICAST SESSION - A security control method in a cable network dynamic multicast session, and more particularly, a method of controlling forward secrecy and backward secrecy in a Data Over Cable Service Interface Specifications (DOCSIS) 3.0 network dynamic multicast session is provided. A security control method in a cable network dynamic multicast session, includes: maintaining a multicast group that is allocated with a first Downstream Service Identifier (DSID) and a first Security Association Identifier (SAID) and that is joined by a first cable modem and a second cable modem; receiving a LeaveMulticastSession message from the second cable modem; exchanging, corresponding to the LeaveMulticastSession message, a Dynamic Bonding Change (DBC) message for changing a multicast parameter with the second cable modem; and updating a first Traffic Encryption Key (TEK) corresponding to the first DSID with a second TEK. | 06-04-2009 |
20090144766 | METHOD AND APPARATUS FOR MULTI-STREAM PROCESSING OF SET TOP BOX IN DOWNLOADABLE CONDITIONAL ACCESS SYSTEM - A multi-stream processing apparatus of a set top box in a Downloadable Conditional Access System (DCAS), the apparatus including: a cable modem (CM) to allocate at least one communication channel with respect to a headend of a broadcasting company connected with a cable network; a demodulator to receive broadcasting information from the cable network using the at least one allocated communication channel and to demodulate the received broadcasting information; a security module to descramble the demodulated broadcasting information using an application downloaded from the headend of the broadcasting company; a decoder to restore the descrambled broadcasting information into an Audio/Video (A/V) signal and to transmit the A/V signal to a connected apparatus; and a software module to control the CM, the security module, the demodulator, and the decoder, and to perform routing of information. | 06-04-2009 |
20090147681 | METHOD AND APPARATUS OF DOWNSTREAM SERVICE FLOW CONTROL IN HFC NETWORKS - A method and apparatus of controlling a downstream service flow is provided. A method of controlling a downstream service flow, the method including: receiving a control request with respect to a service flow; generating classifier information for identifying a Quality of Service (QoS) classification standard of the service flow for which a generation request is performed, and registering the generated classifier information in a table when the control request is the generation request for the service flow; registering a pattern mask corresponding to the classifier information in the table; and composing the table for searching for downstream service flow information of a downstream input packet using the classifier information and the pattern mask. | 06-11-2009 |
20090147781 | METHOD AND APPARATUS OF MULTICAST SERVICE FLOW PROCESSING FOR HEADEND CABLE MODEM - A method and apparatus of processing a multicast service flow for a headend cable modem is provided. | 06-11-2009 |
20090147788 | METHOD AND APPARATUS OF DOWNSTREAM SERVICE FLOWS CLASSIFICATION FOR HEADEND CABLE MODEM - A method and apparatus of classifying downstream service flows for a cable modem is provided. A method of classifying downstream service flows, the method including: classifying a service flow based on a Quality of Service (QoS) using a destination address of an inputted packet; composing an internal header including corresponding service flow information based on the classifying of the service flow; and adding the internal header to the inputted packet. | 06-11-2009 |
20090150552 | METHOD AND APPARATUS FOR MANAGEMENT AND TRANSMISSION OF CLASSIFIED CONDITIONAL ACCESS APPLICATION TO PROVIDE DOWNLOADABLE CONDITIONAL ACCESS SYSTEM SERVICE - A method and apparatus for management and transmission of a classified conditional access application to provide Downloadable Conditional Access System (DCAS) service according to disclosed embodiments is an effective managing method according to a type of a conditional access module in a software version in the DCAS. In particular, it relates to a method and apparatus which can continuously provide Pay per View (PPV) service during movement in a DCAS service operator (SO) network, such as maintaining independence of CAS SO in DCAS, provide adaptability to adapt to a variety of policies of the SO, and install an optimum application in a terminal. | 06-11-2009 |
20090150669 | METHOD AND APPARATUS FOR PROVIDING DOWNLOADABLE CONDITIONAL ACCESS SERVICE USING DISTRIBUTION KEY - An apparatus and a method for providing a downloadable conditional access service using a distribution key are provided. With regard to the apparatus for providing the downloadable conditional access service using the distribution key, a subscriber authorization system transmits a target entitlement management massage being encoded with a target distribution key to a host, and the host decodes the encoded target entitlement management message being encoded with the target distribution key included in a target secure micro client. | 06-11-2009 |
20090150672 | METHOD AND APPARATUS FOR MUTUAL AUTHENTICATION IN DOWNLOADABLE CONDITIONAL ACCESS SYSTEM - Disclosed is a mutual authentication method and apparatus in a CAS including a headend system and DCAS host. In particular, example embodiments relate to a mutual authentication method and apparatus in DCAS, wherein the mutual authentication is performed between an authentication server of the headend system and an SM of a DCAS host, and then CAS software is downloaded to the SM. According to the example embodiments, there is provided a mutual authentication protocol between the authentication server of the headend and the SM of the DCAS host in a cable network, and also provided a mutual authentication method and apparatus in the DCAS where a substantial authentication based on a hardware, such as a smart card or a cable card, is not needed. | 06-11-2009 |
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 |
20090150974 | DIGITAL CABLE SYSTEM AND METHOD FOR PROTECTION OF SECURE MICRO PROGRAM - Provided is a digital cable system and method for protecting a secure micro (SM) client, and more particularly, a digital cable system and method for protecting an SM program that can improve the security of an SM program through authentication of a host and integrity verification of the SM program. A method of protecting an SM program includes: receiving host authentication information associated with a host from a trusted authority; verifying validity of the secure micro program based on the host authentication information; and sending, to an authentication proxy, a HostStateInformation message that includes host state information associated with validity verification information of the SM program. | 06-11-2009 |
20090154498 | METHOD AND APPARATUS FOR REASSEMBLING DOCSIS MAC FRAME IN CABLE MODEM INCLUDING PLURAL RECEIVING CHANNELS - A Data Over Cable Service Interface Specifications (DOCSIS) frame reassembling apparatus and method in a cable modem including a plurality of receiving channels is provided. A method of controlling reassembling of a Media Access Control (MAC) frame, the method including: receiving a signal and outputting a packet signal through demodulation and error correction; receiving the outputted signal and controlling a specific compression format standard header and a point field; receiving packet data and a buffer write enable signal, and writing data in a MAC frame reassembling buffer; storing the data written in the MAC frame reassembling buffer; and reading the stored data from the MAC frame reassembling buffer in response to a received buffer read enable signal and storing the read data in a MAC frame buffer. | 06-18-2009 |
20090154538 | METHOD OF ALLOCATING UPSTREAM BANDWIDTH - A cable modem termination system receives a bandwidth request message, and collects information on the basis of the bandwidth request message. Then, time bandwidth size information is generated on the basis of the bandwidth request message and the collected information, and a bandwidth allocation message is generated on the basis of the collected information and the time bandwidth size information. Accordingly, a cable modem termination system can effectively receive data transmitted from a cable modem. | 06-18-2009 |
20090156204 | APPARATUS AND METHOD FOR AUTOMATIC ROAMING OF TERMINAL IN DIGITAL CABLE BROADCASTING NETWORK - An automatic roaming apparatus and method of a terminal in a digital cable broadcasting network is provided. The method includes: performing device authentication of the terminal when terminal authentication is requested by the terminal; verifying whether roaming authentication of the terminal having requested the terminal authentication is required; requesting subscriber authentication for a Provisioning Server (PS) in a home domain and receiving the subscriber authentication when the terminal exists in the home domain, when the roaming authentication of the terminal is verified as being required; transmitting a result of the device authentication and the subscriber authentication as a response to the terminal; and instructing an Integrated Personalization Server (IPS) to download a Conditional Access (CA) application to the terminal. | 06-18-2009 |
20090158372 | METHOD AND APPARATUS FOR PROVIDING BROADCAST SERVICE INFORMATION IN CABLE NETWORK - Disclosed are a method and apparatus for providing broadcast service information in a cable network. A data transmitting method of the broadcast service information providing apparatus includes receiving IPTV broadcast contents, configuring broadcast service information on the IPTV broadcast contents, assigning a virtual channel to the broadcast service information; and transmitting, to a terminal, the broadcast service information to which the virtual channel is assigned. A data receiving method of a terminal includes receiving broadcast service information to which a virtual channel is assigned, displaying configuration information of the virtual channel, selecting the virtual channel, and decoding the broadcast service information assigned to the selected virtual channel to display the decoded information. | 06-18-2009 |
20090158376 | METHOD AND APPARATUS OF BUILDING IP-BASED VIDEO SERVICE SYSTEM IN HYBRID FIBER COAX NETWORK - An apparatus and method of building an Internet Protocol (IP)-based video service system in a Hybrid Fiber Coax (HFC) network is provided. An apparatus for building an IP-based video service providing system, the apparatus including: an IP decapsulation unit to delete a header in a video signal in a packet form transmitted by an IP-based video server, and to subsequently transmit the video signal to a headend; the headend to encapsulate the video signal received by the IP decapsulation unit into a Media Access Control (MAC) header, and to transmit the encapsulated video signal in the packet form; and an IP protocol encapsulation unit to perform IP encapsulation of the video signal received from the headend. | 06-18-2009 |
20090158395 | METHOD AND APPARATUS FOR DETECTING DOWNLOADABLE CONDITIONAL ACCESS SYSTEM HOST WITH DUPLICATED SECURE MICRO - A method where a Downloadable Conditional Access System Provisioning Server (DPS) detects a duplicated secure micro is provided. A method of detecting a duplicated secure micro, the method including: generating authentication time difference information associated with a value of a difference between a time when a host is finally authenticated in a first address and a time when the host is authenticated in a second address; comparing the authentication time difference information with a first reference value and a second reference value, the second reference value being less than the first reference value; and determining whether the secure micro is duplicated based on a result of the comparing. | 06-18-2009 |
20090158401 | DOWNLOADABLE CONDITIONAL ACCESS SYSTEM AND CONTROLLING METHOD FOR THE SAME - A method and apparatus of supporting a fee-based broadcasting service in a Downloadable Conditional Access System (DCAS) is provided. A control method of a DCAS, the method including: receiving a Conditional Access (CA) image file from a Conditional Access System (CAS) server and receiving Integrated Personalization Server (IPS) access information from an IPS; providing an Authentication Proxy (AP) with information about the received CA image file; controlling the AP to provide a terminal with access information to the IPS and image installation information when the terminal joins a fee-based service based on verifying device information of the terminal; and controlling the IPS to enable the terminal to receive a CA image code of the terminal based on the access information and the image installation information. | 06-18-2009 |
20100125733 | DOWNLOADABLE CONDITIONAL ACCESS SYSTEM, CHANNEL SETTING METHOD AND MESSAGE STRUCTURE FOR 2-WAY COMMUNICATION BETWEEN TERMINAL AND AUTHENTICATION SERVER IN THE DOWNLOADABLE CONDITIONAL ACCESS SYSTEM - Provided are a Downloadable Conditional Access System (DCAS), and a channel setting method and a message format for a 2-way communication between a terminal and an authentication server in the DCAS. The DCAS may include: a verification unit to verify an electronic signature and an integrity with respect to a message received from the authentication server; an extraction unit to extract network access information of the authentication server from the message in which the electronic signature and the integrity are verified; and a channel setting unit to set a communication channel with the authentication server based on the extracted network access information. | 05-20-2010 |
20100128739 | METHOD AND APPARATUS OF SCHEDULING BANDWIDTH IN CABLE NETWORK - Disclosed are a method and apparatus of scheduling a bandwidth in a cable network. The method includes receiving variable information set according to a condition of a network, calculating a packet time slot value in which a delay time gain is maximized using the received variable information; setting an algorithm allocating a bandwidth between channels of the network using the packet time slot value, and operating a Cable Modem Termination System (CMTS) according to the algorithm. | 05-27-2010 |
20100131761 | DOWNLOADABLE CONDITIONAL ACCESS SYSTEM AND METHOD OF SESSION CONTROL FOR SECURED 2-WAY COMMUNICATION BETWEEN AUTHENTICATION SERVER AND HOST DEVICE IN DOWNLOADABLE CONDITIONAL ACCESS SYSTEM - Disclosed is a downloadable conditional access system (DCAS) including a key request unit to transmit a key request message to an authentication server, an authentication request unit to request authentication from the authentication server based on a key response message received from the authentication server in response to the key request message, and a session establishment unit to establish a session with the authentication server, based on an authentication response message received in response to the authentication request. | 05-27-2010 |
20100146116 | METHOD OF CONTROLLING DOWNLOAD LOAD OF SECURE MICRO CLIENT IN DOWNLOADABLE CONDITIONAL ACCESS SYSTEM - A method of controlling a download load of a Secure Micro (SM) client in a Downloadable Conditional Access System (DCAS) is provided. The method of controlling a download load of an SM client including: analyzing version information of SMs and version information of SM clients to control the download load generated in the DCAS, the version information of the SMs and the version information of the SM clients being provided from an Authentication Proxy (AP) server, and the SM clients being installed in the SMs; determining a download policy associated with a download time of a target SM client for the SMs based on a result of the analysis; and providing the AP server with the determined download policy. | 06-10-2010 |
20100146276 | METHOD OF RECOVERING AND MANAGING SECURITY-RELATED INFORMATION FOR DOWNLOADABLE CONDITIONAL ACCESS SYSTEM - A method of managing security-related information in a Downloadable Conditional Access System (DCAS) is provided. The method of managing security-related information in the DCAS, the method including: receiving a request for storage of identification information and security-related information from a target server, the security-related information being required to be securely maintained; transmitting a recovery key to the target server in preparation for a loss of the security-related information in the target server; receiving a request for recovery of the security-related information from the target server, when the security-related information is lost; encrypting the security-related information of the target server using the recovery key; and transmitting the encrypted security-related information to the target server. | 06-10-2010 |
20100153710 | METHOD OF PREVENTING UNAUTHENTICATED VIEWING USING UNIQUE INFORMATION OF SECURE MICRO - A method of verifying a validity of a Secure Micro (SM) is provided. The method of verifying a validity of an SM, the method including: storing and maintaining a validity verification message used to verify the validity of the SM, the validity verification message being generated by a Trusted Authority (TA) based on unique information of the SM, and the SM and the TA sharing the unique information of the SM; and verifying the validity of the SM using the validity verification message and the unique information shared by the SM, when an SM client is executed. | 06-17-2010 |
20100153711 | DOWNLOADABLE CONDITIONAL ACCESS SYSTEM EFFICIENTLY DETECTING DUPLICATED DCAS HOST - A technology that may efficiently detect a duplicated Downloadable Conditional Access System (DCAS) host in a DCAS is provided. | 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 |
20100157828 | METHOD FOR CONTROLLING EVENT AND REPORTING STATUS OF CABLE MODEM AND APPARATUS THEREOF - Provided is a method and apparatus for controlling an event of a cable modem and reporting a status of the cable modem, the method including: determining whether to periodically allocate a transmission bandwidth of a CM-STATUS message with respect to an event occurrence of the cable modem; setting an event control encoding that includes information regarding whether to periodically allocate the transmission bandwidth; and generating a MAC Domain Descriptor (MDD) message containing the event control encoding to transmit the generated MDD message. | 06-24-2010 |
20100157920 | APPARATUS AND METHOD OF CHANNEL BANDWIDTH ALLOCATION - Provided is an apparatus for a channel bandwidth allocation, the apparatus including: an information sorting unit to receive bandwidth allocation request information, to sort the received bandwidth allocation request information according to a priority, and to transfer any one of the sorted bandwidth allocation request information to a minislot allocation unit; and a calculation unit to apply a multiplier to a number of bytes, and to transfer, to the minislot allocation unit, the bandwidth allocation request information where a number of requested bytes is calculated, when the bandwidth allocation request information is byte-based bandwidth allocation request information, wherein the minislot allocation unit allocates a minislot based on the bandwidth allocation request information and predetermined setting information. | 06-24-2010 |
20100158036 | METHOD AND APPARATUS OF RECEIVING BURST DATA USING MULTIPLE UPSTREAM CHANNELS BASED ON UPSTREAM BANDWIDTH ALLOCATION INFORMATION IN HFC NETWORK - Provided is a method and apparatus for effectively receiving channel bonded upstream burst data in a Hybrid Fiber Cable (HFC) network. | 06-24-2010 |
20100158480 | MULTI-STREAM ENCRYPTION METHOD AND APPARATUS, AND HOST DEVICE FOR MULTI-CHANNEL RECORDING - A multi-stream encryption apparatus and method, and a host device for multi-channel recording of a plurality of fee-based broadcasting services in a Downloadable Conditional Access System (DCAS) are provided. | 06-24-2010 |
20100161966 | MUTUAL AUTHENTICATION APPARATUS AND METHOD IN DOWNLOADABLE CONDITIONAL ACCESS SYSTEM - A mutual authentication method in a Downloadable Conditional Access System (DCAS) is provided. The mutual authentication method may receive authentication-related information about authentication between an authentication unit and a security module (SM) from a Trusted Authority (TA), generate an authentication session key using the authentication-related information, transmit the authentication session key by the authentication unit to the SM through a Cable Modem Termination System (CMTS), and control a Conditional Access System (CAS) software to be downloaded to the SM from the authentication unit, when the authentication is completed by the authentication session key. | 06-24-2010 |
20100161987 | DOWNLOADABLE CONDITIONAL ACCESS SYSTEM SERVICE PROVIDING APPARATUS AND METHOD - Provided is a Downloadable Conditional Access System (DCAS) service providing method where a mutual authentication with respect to a DCAS host and an Authentication Proxy (AP) server is performed, operating environment information and host identification information, which are extracted by the AP server, are transmitted by the AP server to a Personalization Server (PS), image information is selected by referring to the host identification information, the operating environment information, and policy information agreed to by a Conditional Access System (CAS) server and the PS, the image information being transmitted by the PS to a code download server, and the image information is transmitted to the DCAS host, when access information of the image information is transmitted to the DCAS host through the PS and the AP server. | 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 |
20100162353 | TERMINAL AUTHENTICATION APPARATUS AND METHOD IN DOWNLOADABLE CONDITIONAL ACCESS SYSTEM - A terminal authentication apparatus and method in a Downloadable Conditional Access System (DCAS) is provided. The terminal authentication method may determine whether terminal authentication information, received from a DCAS terminal, is valid by referring to a database, may transmit DCAS image information and pairing information about the terminal authentication information to a user terminal, when the terminal authentication information is valid, and thereby may enable the DCAS terminal to set the user terminal based on the pairing information. | 06-24-2010 |
20100235626 | APPARATUS AND METHOD FOR MUTUAL AUTHENTICATION IN DOWNLOADABLE CONDITIONAL ACCESS SYSTEM - A mutual authentication apparatus in a Downloadable Conditional Access System (DCAS) includes an announce protocol processor to authenticate SecurityAnnounce information using an Authentication Proxy (AP) and to transmit the authenticated SecurityAnnounce information to a Secure Micro (SM), a keying protocol processor to relay KeyRequest information and KeyResponse information between a Trusted Authority (TA) and the SM in response to the SecurityAnnounce information, a decryption unit to decrypt the KeyResponse information using the SM, an authentication protocol processor to determine whether a first encryption key of the KeyResponse information is identical to a second encryption key generated by the AP, and a download protocol processor to control DownloadInfo to be transmitted from the AP to the SM, the DownloadInfo permitting the SM to download SM Client Image information. | 09-16-2010 |
20110072260 | METHOD AND SYSTEM OF DOWNLOADABLE CONDITIONAL ACCESS USING DISTRIBUTED TRUSTED AUTHORITY - Disclosed is a downloadable conditional access system (DCAS) and an operational method thereof that distributes a part of a function of a Trusted Authority to each multiple system operator (MSO) to enable the MSO server to process authentication with respect to a secure micro (SM) chip and a transport processor (TP) chip, and thus, a normal DCAS service is possible even when there is a problem with a security, and a DCAS host terminal for rental use is effectively operated. | 03-24-2011 |
20110078444 | RE-AUTHENTICATION APPARATUS AND METHOD IN DOWNLOADABLE CONDITIONAL ACCESS SYSTEM - Provided is a re-authentication apparatus in a Downloadable Conditional Access System (DCAS), the re-authentication apparatus includes: a receiving unit to receive a key request message from a Secure Micro (SM); a determination unit to determine whether to perform re-authentication depending on downloading of SM client image; an identification unit to identify an SM identifier using the key request message, when the re-authentication is performed as a result of the determination; an extraction unit to retrieve previous session information corresponding to the SM identifier and to extract keying information about the previous session information; and an encryption unit to control an encryption key about the SM client image to be reused, the SM client image being encrypted in a previous session based on the previous session information using the keying information. | 03-31-2011 |
20110153651 | APPARATUS AND METHOD FOR REMOTELY MONITORING TERMINAL - An apparatus for remotely monitoring a terminal is provided which includes an analyzer to map terminal information regarding at least one management target terminal, a collection period, a cycle setting value, or an analysis item, to group the at least one management target terminal, and to store the grouped at least one management target terminal in a form of a profile, a management processor to perform a query for a Management Information Base (MIB) object requested by the at least one management target terminal conforming with a Simple Network Management Protocol (SNMP) standard, and to transmit a value of the returned MIB object to the analyzer, and an output unit to output, from a database, at least one of the analysis item, the analysis period, the terminal information, and an output format. | 06-23-2011 |
20110228775 | METHOD AND APPARATUS OF MULTICAST SERVICE FLOW PROCESSING FOR HEADEND CABLE MODEM - A method and apparatus of processing a multicast service flow for a headend cable modem is provided. | 09-22-2011 |
20110247032 | METHOD AND APPARATUS FOR REMOTELY INSTALLING AND UPDATING DIFFERENT SECURITY CLIENTS FOR BROADCASTING OR COMMUNICATION CHANNELS - A method for installing different security clients for channels in a terminal in a conditional access system includes: searching one or more channels searchable in the terminal; requesting, for respective searched channels, security clients necessary for receiving pay programs to be transmitted through the searched channels, to a broadcasting station which takes charge of the searched channels; and downloading and installing, for respective searched channels, the requested security clients from the broadcasting station. | 10-06-2011 |
20130042278 | METHOD AND APPARATUS FOR PROVIDING VIDEO SERVICE - A method and an apparatus for providing video service according to example embodiments of the present invention are disclosed. The method for providing video service according to one example embodiment of the present invention comprises determining based on a predetermined reference whether it is necessary to set multiple bearers to provide the video service for a terminal, and when it is determined necessary to set the multiple bearers, setting an additional bearer, dividing a video source stream into a first stream and a second stream, assigning the first and second streams to a default bearer and the additional bearer, respectively, and transmitting the first and second streams to the terminal. | 02-14-2013 |
20130051479 | METHOD FOR PAYLOAD FORMATTING AND DEFORMATTING FOR BURST LOSS RECOVERY - Disclosed are payload formatting and deformatting methods for burst data loss recovery. The payload formatting method according to an embodiment of the present invention includes: generating an XOR operation packet by performing an XOR operation on the basis of a base layer packet and any one of enhancement layer packets of a group of pictures (GoP), the GoP including the base layer packet and the enhancement layer packets; and adding the XOR operation packet to the GoP. | 02-28-2013 |
20130094359 | APPARATUS AND METHOD FOR CONTROLLING QUALITY OF SERVICE OF WIRELESS NETWORK - An apparatus and method for controlling quality of service (QoS) of a content provided to a mobile terminal in a wireless network are provided. The QoS control apparatus may include a content node search unit to search for a content node having optimized QoS for a mobile terminal when receiving a content request signal from the mobile terminal, and an information providing unit to provide information on the content node to the mobile terminal. | 04-18-2013 |
20140146178 | IMAGE PROCESSING APPARATUS AND METHOD USING SMART GLASS - An image processing apparatus using a smart glass is provided, the image processing apparatus including an extractor to extract a first target to be observed by a user from a first image received from the smart glass and generate a second image using the extracted first target, an information collector to collect information related to the first target, and an image generator to reconstruct a third image using at least one of the second image and the information related to the first target, based on user settings. | 05-29-2014 |
20140204785 | COMMUNICATION APPARATUS AND METHOD OF USING MASSIVE MULTIPLE INPUT MULTIPLE OUTPUT - A communication apparatus and method using a massive multiple input multiple output (MIMO) is disclosed, the method including measuring a transmission capacity between terminals disposed in a cell and a base station when a number of terminals disposed in the cell of the base station is greater than a number of terminals to be supported by the base station, and selecting at least one terminal for maximizing a network capacity from among terminals disposed in the cell based on the transmission capacity and the number of terminals to be supported by the base station. | 07-24-2014 |
20150015666 | METHOD AND APPARATUS FOR PROVIDING 3D VIDEO STREAMING SERVICE - In order to provide a three-dimensional (3D) video streaming service to a user terminal, user characteristic information including eyesight information of the left eye and the right eye of a user is received from the user terminal. Then, one of quality of a left image and that of a right image is improved in accordance with the eyesight information so that an image with improved quality is transmitted to the user terminal. | 01-15-2015 |