Patent application number | Description | Published |
20080253369 | MONITORING AND CORRECTING UPSTREAM PACKET LOSS - An upstream error controller monitors a media stream at a location upstream from an associated set of receivers receiving the media stream. The upstream error controller sends out suppression notices for any media packets lost upstream causing the receivers to suppress sending lost packet notices. In another embodiment, a repair point joins a primary multicast group with multiple receivers for receiving a native media stream. The repair point also joins a second multicast group receiving multicast backup data for retransmitting or repairing the native media stream that does not include an associated set of receivers. In yet another embodiment, the upstream error controller is used in combination with a hybrid packet repair scheme for adaptively switching among unicast retransmission, multicast retransmission, and Forward Error Correction (FEC). | 10-16-2008 |
20080256409 | HYBRID CORRECTIVE SCHEME FOR DROPPED PACKETS - In one embodiment, a hybrid packet repair scheme adaptively switches among unicast retransmission, multicast retransmission, and Forward Error Correction (FEC) depending on the receiver population and the nature of the error prompting the repair operation. The NACK patterns are used to heuristically determine the degree of correlation among packet losses. In an additional embodiment, wasting bandwidth and processing on retransmissions of FEC that will fail to correct the errors is avoided by evaluating the nature of the error and the bandwidth needed to optimally repair it. Unicast retransmission, multicast retransmission, or FEC repair is then dynamically performed according to the loss patterns derived from the NACK arrivals and other network conditions. | 10-16-2008 |
20090217318 | IP-BASED STREAM SPLICING WITH CONTENT-SPECIFIC SPLICE POINTS - A method and system for conditioning a media stream for splicing are disclosed. In an embodiment, content-specific splice points, which correspond to a possible playout splice point within an original media stream, are identified for both audio and video components of the original media stream. Once the audio bitstream and video bitstream splice points are identified, the audio bitstream in the vicinity of the audio bitstream splice point is packetized into IP packets containing only audio with one of the audio-containing IP packets having an IP packet boundary that corresponds to the audio bitstream splice point and the video bitstream in the vicinity of the video bitstream splice point is packetized into IP packets containing only video with one of the video-containing IP packets having an IP packet boundary that corresponds to the video bitstream splice point. The conditioned original media stream is then transmitted downstream to a splicer. | 08-27-2009 |
20100169503 | Content Tagging of Media Streams - In one embodiment, a network device comprises a tag processor configured to process a media stream received at the network device. The media stream is sent through a network to a desired destination. The tag processor comprises at least one of a tag inserter module and a tag module. The tag inserter module inserts a tag into the media stream, the tag indicating content of the media stream and the network device providing the tag. The tag module identifies and reports a value of a tag received within the media stream, and forwards the media stream to a user and/or compares the identified value to an expected tag value, and forwards the media stream to a user in the event that the comparison indicates a match. The present invention embodiments further include a method and logic for content tagging of the media stream. | 07-01-2010 |
20120189007 | MONITORING AND CORRECTING UPSTREAM PACKET LOSS - An upstream error controller monitors a media stream at a location upstream from an associated set of receivers receiving the media stream. The upstream error controller sends out suppression notices for any media packets lost upstream causing the receivers to suppress sending lost packet notices. In another embodiment, a repair point joins a primary multicast group with multiple receivers for receiving a native media stream. The repair point also joins a second multicast group receiving multicast backup data for retransmitting or repairing the native media stream that does not include an associated set of receivers. In yet another embodiment, the upstream error controller is used in combination with a hybrid packet repair scheme for adaptively switching among unicast retransmission, multicast retransmission, and Forward Error Correction (FEC). | 07-26-2012 |
Patent application number | Description | Published |
20080229375 | LOCALLY STORED VIDEO CONTENT HAVING A VIDEO RESOLUTION ASSOCIATED WITH REMOTE DEVICES - The present invention is directed to systems and methods for forwarding locally stored video content that has a video resolution associated with receiving remote devices. More specifically, set top boxes (STBs) receive full screen and lower resolution video content for each program title. The STB may store both versions of the video content for future viewing. When remote devices request a program title, the STB forwards the lower resolution version. Alternatively, the STB may request an appropriate video resolution for a remote device from a video service provider. | 09-18-2008 |
20090031342 | Systems and Methods of Differentiated Requests for Network Access - Methods and systems of handling channel changes in a digital home communication terminal are disclosed. An exemplary method comprises: receiving a request for access to a downstream network connected to the DHCT; determining a source of the request for access; and setting at least one parameter to a value based on the determined source; and performing a channel change using the at least one parameter having the set value An exemplary system comprises: a channel acquisition component, memory, and a processor. The processor is programmed by code, stored in memory, to: receive a channel change request; determine whether the channel change request is user-initiated; and instruct the channel acquisition component to perform a channel change using at least one parameter. The parameter has a value that is based on the determination. | 01-29-2009 |
20090031392 | Systems and Methods of Differentiated Channel Change Behavior - Methods and systems of handling channel changes in a digital home communication terminal are disclosed. An exemplary method comprises: receiving a channel change request; determining whether the channel change request is user-initiated; setting at least one channel change parameter to a value based on the determination; and performing a channel change using the at least channel change parameter having the set value. An exemplary system comprises: a channel acquisition component, memory, and a processor. The processor is programmed by code, stored in memory, to: receive a channel change request; determine whether the channel change request is user-initiated; and instruct the channel acquisition component to perform a channel change using at least channel change parameter. The channel change parameter has a value that is based on the determination. | 01-29-2009 |
20090034627 | NON-ENHANCING MEDIA REDUNDANCY CODING FOR MITIGATING TRANSMISSION IMPAIRMENTS - In one embodiment, a method comprises identifying a plurality of frames of interest from a primary stream of encoded frames. The method further comprises selecting at least one of the frames of interest for inclusion in a separate redundant stream. The method further comprises producing another encoded instance of the at least one selected encoded frame. The method further comprises associating the another encoded instance of the at least one selected frame in the separate redundant stream with the corresponding selected encoded frame in the primary stream. The method further comprises providing the primary stream, the separate redundant stream, and a common clock reference to a decoder. | 02-05-2009 |
20090119722 | LOCATING POINTS OF INTEREST USING REFERENCES TO MEDIA FRAMES WITHIN A PACKET FLOW - In one embodiment, a method comprises receiving a stream of transport packets encapsulating media packets, and generating a reference to the point-of-interest media packet relative to the location of the point-of-interest within the transport packet stream. The reference is generated for each media packet that is identified as a point-of-interest | 05-07-2009 |
20090150715 | DELIVERY OF STREAMS TO REPAIR ERRORED MEDIA STREAMS IN PERIODS OF INSUFFICIENT RESOURCES - In one embodiment, a method includes ingesting a program stream from a program source on a first channel. The method also includes storing the program stream, and receiving notification from a client of unrecoverable error in a stream received at the client. The unrecoverable error corresponds to at least a portion of the stored program stream. The method also includes distributing the corresponding portion of the stored program stream to the client on a second channel in response to the notification. | 06-11-2009 |
20090150960 | DELIVERY OF STREAMS TO REPAIR ERRORED MEDIA STREAMS IN PERIODS OF UNRECOVERABLE ERRORS - In one embodiment, a method includes receiving a program stream from a program source on a first channel. The method also includes detecting an unrecoverable error in the program stream, and receiving a standalone decodable repair stream from an error repair source on a second channel. The repair stream refers to a portion of the program stream, where the portion corresponds to the unrecoverable error. The method also includes combining the repair stream and the program stream to produce a presentable stream for user viewing. | 06-11-2009 |
20120278823 | Method and Apparatus for Storage and Insertion of Advertisements - A method includes detecting a substitution signal at a set top box device. The method includes inserting an advertisement into a media stream in response to detecting the substitution signal and determining an advertising fee associated with insertion of the advertisement into the media stream. A first advertising fee is determined when the advertisement is a local advertisement for a provider of a product or service and is to be inserted at a first location in the media stream that follows a national advertisement for the product or service. The first advertising fee is higher than a second advertising fee that is associated with insertion of the local advertisement for the provider of the product or service at a second location in the media stream | 11-01-2012 |
20140157310 | METHOD AND APPARATUS FOR STORAGE AND INSERTION OF ADVERTISEMENTS - A method includes detecting a substitution signal at a device and inserting an advertisement into a media stream in response to detecting the substitution signal. The advertisement is selected based on an advertising fee associated with insertion of the advertisement into the media stream. The advertising fee is a first fee when the advertisement is a local advertisement for a provider of a product or service and the advertisement is to be inserted at a first location in the media stream that follows a national advertisement for the product or service. The first fee is distinct from a second fee that is associated with insertion of the local advertisement at a second location in the media stream. | 06-05-2014 |