| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 725090000 | With particular transmission scheme (e.g., transmitting I-frames only) | 38 |
| 20090064242 | FAST CHANNEL SWITCHING FOR DIGITAL TV - A method for digital video distribution in which a program is transmitted as a multicast stream over a network at a base rate. The stream includes a sequence of frames encoding video data, the sequence containing anchor points. A request from a client to begin receiving the program is received at a time subsequent to a given anchor point in the multicast stream. Responsively to the request, a boost stream is transmitted to the client beginning from the given anchor point at an accelerated rate relative to the base rate. The boost stream causes the client to display the video data beginning from the given anchor point and then to join the multicast stream when the boost stream has reached a point of synchronization with the multicast stream. | 03-05-2009 |
| 20090178090 | METHOD AND APPARATUS FOR STREAMING DIGITAL MEDIA CONTENT AND A COMMUNICATION SYSTEM - The invention provides a method of streaming of digital media content made up of a stream of data frames, the method comprising: during playback in one mode of the digital media content, determining parameters associated with a defined type of frame within the digital media stream; and, based upon the determined parameters, estimating the position within the digital media stream of other of the defined type of frame within the digital media stream. | 07-09-2009 |
| 20090199248 | SYSTEM AND METHOD FOR THE BROADCAST DISSEMINATION OF TIME-ORDERED DATA - A stream of time-ordered data, such as a movie, is divided into multiple fragments of equal length, which are repetitively transmitted at different respective repetition rates. The fragments are reordered for transmission so that those which occur near the beginning of the original data stream are transmitted more frequently than those which occur later in the data stream. When a user enters a request to utilize the data, the individual fragments are stored upon receipt at the user's premises, and reassembled into a contiguous stream. The ordering of the fragments is such that the wait time required before utilization of the data can begin is limited to a predetermined maximum, and at least one copy of every fragment becomes available by the time it is needed. | 08-06-2009 |
| 20090300691 | METHOD AND SYSTEM OF OPERATING CONTENT STREAMS - A method and system of operating content streams. The method includes detecting that a playing of first and second content streams is asynchronous, each of the first and second content streams respectively including first and second turning points, and selectively synchronizing at least the first and second turning points of the first and second content streams by inserting gap fillers into at least one of the first and second content streams. | 12-03-2009 |
| 20100011397 | PACKET TIMING METHOD AND APPARATUS OF A RECEIVER SYSTEM FOR CONTROLLING DIGITAL TV PROGRAM START TIME - A system for the delivery of video on demand (VOD). A wireless remote control device generates keystroke signals for controlling a TV display and has a single button for restarting a selected program at a beginning of the selected program. A head-end unit supports separate downstream virtual channels for each separate TV set connected on a common TV feeder-cable; The head-end unit locally records and stores many programs, and transmits each program using a compressed digital format. The Compressed digital format may use MPEG-2 or MPEG-4. The head-end unit has means for protecting against signal theft. A set top unit encapsulates the keystroke signals and transmits the keystroke signals via a two-way channel to the head-end unit. | 01-14-2010 |
| 20100031301 | System and Method for Reducing Interlace Artifacts during Trick Mode Playback - A system and method for reducing interlace artifacts during trick mode playback of pre-encoded content. The system and method operate a decoder to receive a video signal, configured as frames, with each frame having a plurality of interlaced fields, and to provide a video output in interlaced format or trick mode format. When operating in a normal mode, the decoder provides the video output in the interlaced format. When operating in trick mode, the decoder is instructed to use one of the fields of a frame as a reference field, and outputs a video output frame in the trick mode format where both fields of the video output frame are the same as the reference field. The video signal can be a streaming video or read from a medium. | 02-04-2010 |
| 20100131992 | Delivery of content in video-on-demand system - A method of delivering and playing content includes delivering, through first-group channels, an entirety of content at a content bit rate with a time difference between each delivery commencement, delivering, through one or more second-group channels, only a start portion of the content at two or more times the content bit rate, selecting, from the first-group channels and the one or more second-group channels, a channel through which the start portion of the content is received earliest after a view request, followed by receiving and playing the start portion, and selecting, after receiving the start portion through the selected channel that is one of the one or more second-group channels, one of the first-group channels through which the remainder of the content is received for a first time after a start of the reception of the start portion, followed by receiving and playing the remainder of the content. | 05-27-2010 |
| 20110113456 | METHOD FOR PROVIDING DIGITAL BROADCASTING SERVICE AND STREAMING SERVICE IN A PORTABLE TERMINAL - A method for providing a digital broadcasting service and a streaming service in a portable terminal is provided. The method include receiving a request for moving a play position of broadcast content provided via the digital broadcasting service, determining whether streaming content corresponding to the broadcast content is available, the streaming content being provided in the streaming service, and playing the streaming content from the moved play position in a streaming fashion. | 05-12-2011 |
| 20110296475 | SYSTEMS & METHODS FOR ALLOCATING BANDWIDTH IN SWITCHED DIGITAL VIDEO SYSTEMS BASED ON INTEREST - Systems and methods for allocating bandwidth in a switched digital video (SDV) system based on channel interest. In some embodiments, bandwidth is deallocated from channels and allocated to requested channels having a higher interest. Tiered approaches for allocating bandwidth are disclosed. Embodiments in which QAMs are allocated across services in a multi-service system based on interest are also disclosed. Embodiments for accommodating emergency access system (EAS) functionality in a SDV system are also disclosed. | 12-01-2011 |
| 20120066728 | METHOD OF CONTROLLING TRICK MODES AND TRANSPORT STREAM TRANSMITTING APPARATUS FOR IMPLEMENTING THE SAME - A method of controlling trick modes for a transport stream capable of easily determining a reproducing position corresponding to a trick mode execution mode on a transport stream of a 3D image is provided. The method includes, if a trick mode execution command for a transport stream is received, calculating a reproducing range on a first transport stream corresponding to a received trick mode execution command, calculating a reproducing range on a second transport stream based on a calculated reproduction range of the first transport stream, and controlling to transmit the first transport stream corresponding to the calculated reproducing range of the first transport stream and the second transport stream corresponding to the calculated reproducing range of the second transport stream. | 03-15-2012 |
| 20120174168 | Method and Apparatus for Retrieving I Frame - A method and apparatus for retrieving an I frame are disclosed in the present invention, wherein, the method includes: analyzing transport stream packets in a transport stream one by one, and if it is determined that the current transport stream packet is a video packet and includes a Packet Elementary Stream (PES) header, then making a determination according to data after the PES header in the current transport stream packet to locate initial and/or end locations of the I frame. In the present invention, without parsing syntax elements in H.264, such as a Sequence Parameter Set (SPS), a Picture Parameter Set (PPS), a slice etc., the location of the I frame can be positioned by simply comparing various Transport stream (TS) packets in the TS stream and making a determination. | 07-05-2012 |
| 20130019273 | METHOD AND SYSTEM FOR TRICK PLAY IN OVER-THE-TOP VIDEO DELIVERY - A method for trick play (fast forward, rewind, etc.) in video streams using adaptive bitrate HTTP delivery protocols includes playing only portions of a video at a current bitrate to achieve the initial trick play functionality. A new trick play bitrate is selected based on a trick play playout rate, the trick play bitrate for the duration of the trick play is retrieved, and operation is switched back to a previous bitrate when normal playback resumes. A system is also specified for implementing a client and server infrastructure in accordance with the method. | 01-17-2013 |
| 20140109156 | METHOD, TERMINAL, SERVER AND SYSTEM FOR PLAYING MEDIA FILE - A method, a terminal, a server, and a system play a media file. The method includes: obtaining a fast play state of a media file that is based on the HLS protocol; determining intra-coded frame information corresponding to the fast play state; sending a request message to a server, where the request message includes the intra-coded frame information; receiving a response message, which is sent by the server according to the request message, where the response message includes intra-coded frame data corresponding to the intra-coded frame information; and playing the intra-coded frame data according to the response message. According to the present invention, i a terminal supporting HLS can obtain the intra-coded frame data corresponding to a fast play state of the media file and play the data. | 04-17-2014 |
| 20140137168 | TRANSMITTING APPARATUS, CONTROL METHOD FOR TRANSMITTING APPARATUS, CONTROL PROGRAM, AND RECORDING MEDIUM | 05-15-2014 |
| 20140165117 | VIDEO PLAYBACK SYSTEM WITH MULTIPLE VIDEO DECODERS AND RELATED COMPUTER PROGRAM PRODUCTS - A video playback system with multiple video decoders includes a content provider server for providing video signals of a target video; a first video decoder; a first display for displaying video content outputted from the first video decoder; a second video decoder; a second display for displaying video content outputted from the second video decoder; a playback control server for controlling the first and the second video decoders; and a mobile communication device for transmitting selection messages to the playback control server via internet and then transmitting modification messages to the playback control server via internet. The playback control server opts to utilize the first video decoder to receive a portion of video signals of the target video according t o the selection message, and opts to utilize the second video decoder to receive subsequent video signals of the target video according to the modification message. | 06-12-2014 |
| 20140165118 | METHOD AND END POINT FOR DISTRIBUTING LIVE CONTENT STREAM IN A CONTENT DELIVERY NETWORK - The method comprises the management and delivery of a requested live stream using a P2P-based architecture, where peers exchanging content with one another are end points of a CDN. The delivery of the requested live stream to one or more end users is performed from one or more of said end points. The requested live stream is split into segments that the serving end points, preferably, obtains from neighbouring end points and/or from the origin server of the live stream using a scheduling algorithm and depending on the availability of segments thereof. | 06-12-2014 |
| 20140215537 | Method and Apparatus for Content Delivery - A method for recording linear content and delivering it for time-shifted viewing is described. The linear content may be recorded live by the content delivery system in response to user requests. The content delivery system divides the recording into at least two portions, the first portion of sufficient duration to permit real time continuous playback of the recorded content on the customer premises equipment (CPE) if the first portion has previously been transmitted to the CPE and the second has not been transmitted. The content delivery system transmits the first portion to the CPE prior to playback, and the second portion is streamed to the CPE after playback has begun. The playback is under control of the CPE from local storage. | 07-31-2014 |
| 20140223501 | WIRELESS COMMUNICATION CHANNEL OPERATION METHOD AND SYSTEM OF PORTABLE TERMINAL - A wireless communication channel operation method and a system of the portable terminal for preventing data loss when switching between different wireless video transmission modes are provided. The method includes transmitting multimedia data to a recipient terminal on a communication channel of a second transmission mode in a wireless video transmission mode, the wireless video transmission mode supporting a first and second transmission modes, receiving buffer state information from the recipient terminal, pausing, when a request for switching to the first transmission mode is detected, transmission of the multimedia data to the recipient terminal, determining the buffer state information, waiting, when the buffer state information indicates presence of multimedia data in a reception buffer of the reception terminal, for completion of playing of the multimedia data in the reception buffer, and switching to the first transmission mode after the multimedia data in the reception buffer is played completely. | 08-07-2014 |
| 20140237524 | METHODS AND APPARATUS FOR VARIABLE DELAY COMPENSATION IN NETWORKS - Methods and apparatus for performing dynamic compensation for delays over extant infrastructure within a content-based network. In one embodiment, the network comprises a cable network, and the infrastructure comprises that nominally used for on-demand (OD) services such as VOD. The method includes periodically or situationally assessing variable delays within the system associated with functional commands (such as “trick mode” commands), and dynamically compensating for these variable delays in order to improve the accuracy and timeliness of the user's trick mode command. This approach increases user satisfaction, and obviates the issuance of additional compensatory trick mode commands that only further degrade the performance of the network. | 08-21-2014 |
| 20140250474 | SOURCE OPTIMIZED DYNAMIC TRICKPLAY - At least one trickplay source file is generated from original media content. Trickplay view files for rendering particular trickplay view rates are then generated from the trickplay source file. | 09-04-2014 |
| 20140282760 | METHODS OF IMPLEMENTING TRICKPLAY - A method of operating an IP client device for presentation of video content to a viewer includes the step of transmitting a trickplay request to a server. The client device receives from the server a manifest that references at least first and second consecutive video content fragments. The first fragment contains a sequence of N1 frames and the second fragment contains a sequence of N2 frames, and defines a set of M1 frames of the first fragment, where M1 is less than N1, and a set of M2 frames of the second fragment, where M2 is less than N2. The client device transmits a request for the M1 frames and the M2 frames and receives the M1 frames and the M2 frames. The client device presents the M1 frames and the M2 frames consecutively at the uniform, predetermined frame rate. The sequence of the M1 frames and the M2 frames has a presentation duration of (M1+M2)/F. | 09-18-2014 |
| 20140337903 | SEAMLESS TRICK-MODE WITH DECREASED LATENCY FOR LIVE TRANSCODE STREAMING - A method for performing trick-mode operations with decreased latency for transcode streaming includes receiving and recording a stream of video data. A single transcoder may transcode the stream of video data and generate output video data in an output buffer following. Segmentation index information may be generated that refers to the output data in the output buffer. Skip-backwards, skip-ahead, and resume requests received from a client device are responded by retrieving transcoded video data from the output buffer or retrieving and transcoding video data from an input storage. A method for performing skip-ahead trick-mode operation with decreased latency may use two transcoders such as two threads of the single transcoder to transcode temporally current content and forward content. The forward content may be associated with a forward time offset with respect to the temporally current content. The transcoded forward content is provided in response to skip-ahead trick mode request. | 11-13-2014 |
| 20140337904 | METHODS OF IMPLEMENTING MULTI MODE TRICKPLAY - A method of operating a server and an IP client device for presentation of video content to a viewer that includes a trickplay function. The server partitions media chunks into several sub chunks and includes information about the sub chunks in a manifest. The client plays the needed sub chunks to implement a desired play rate. As an alternative to providing sub chunk information in the manifest, the server sends key frame information in the manifest. The client plays needed frames of the key frames to implement a desired play rate. The sub chunk information as well as key frame information is encoded into the manifest as a standard comment or chunk filename. In another alternative, the IP client sends a trickplay request and based on that, the server signals either the sub chunks to be played or the key frames to be played to affect the desired speed. In yet another variation, the server can also remove the unwanted sub chunks or key frames to affect the desired play rate at the IP client. | 11-13-2014 |
| 20140359679 | CONTENT STREAMING WITH CLIENT DEVICE TRICK PLAY INDEX - An apparatus downloads files of encoded video including interspersed key frames over a communication network. The apparatus plays back video from the downloaded files and creates a trick play index based on the downloaded files. The trick play index indicates network locations of the key frames in the encoded video files. When the apparatus receives a trick play request, such as rewind or fast forward, the client device downloads the key frames from the indicated network locations, and plays back video from the downloaded key frames. | 12-04-2014 |
| 20140359680 | NETWORK VIDEO STREAMING WITH TRICK PLAY BASED ON SEPARATE TRICK PLAY FILES - Network services encode multimedia content, such as video, into multiple adaptive bitrate streams of encoded video and a separate trick play stream of encoded video to support trick play features. The trick play stream is encoded at a lower encoding bitrate and frame rate than each of the adaptive bitrate streams. The adaptive bitrate streams and the trick play stream are stored in the network services. During normal content streaming and playback, a client device downloads a selected one of the adaptive bitrate streams from network serviced for playback at the client device. To implement a trick play feature, the client device downloads the trick play stream from the network services for trick play playback. | 12-04-2014 |
| 20150058900 | IMAGE COMMUNICATION APPARATUS AND CONTROL METHOD THEREFOR - An image communication apparatus has a function of outputting a shot image obtained by imaging an object, a function of displaying at least the shot image, a function of generating a captured image by capturing a displayed image, a function of encoding an image and decoding an encoded image, a function of writing the encoded shot image in a memory and reading out a recorded image stored in the memory, and a function of communicating with another apparatus through a network. The image communication apparatus switches the mode of video to be transmitted to the other apparatus by controlling these functions based on a control event. | 02-26-2015 |
| 20150074731 | Extending Data Records for Dynamic Data and Selective Acceptance Based on Hardware Profile - A system, method and data structure for processing basic client application data types to add thereto extension types and priority levels adapted for use by each of a plurality of set top box classes. | 03-12-2015 |
| 20150100993 | SEAMLESS PLAYBACK METHOD USING BOOKMARK, AND APPARATUS AND SYSTEM THEREFOR - A seamless playback method using a bookmark, and an apparatus and a system therefore are disclosed. The seamless playback method using the bookmark receives, from one of a prior device and a prior server, the bookmark comprising playback information on the prior device which had previously played back contents, enables the device to set the playback information for playing back the contents on the basis of the playback information of the prior device, and can play back, from a resumed playback time point, the contents and additional contents corresponding to the set playback information on the basis of the set playback information. Thus, the contents stopped during a playback process of the device can be continuously and automatically played back in the same playback setting as the device using another device. | 04-09-2015 |
| 20150106860 | Method and System for Trick Play in Over-the-Top Video Delivery - A method for trick play (fast forward, rewind, etc.) in video streams using adaptive bitrate HTTP delivery protocols includes playing only portions of a video at a current bitrate to achieve the initial trick play functionality. A new trick play bitrate is selected based on a trick play playout rate, the trick play bitrate for the duration of the trick play is retrieved, and operation is switched back to a previous bitrate when normal playback resumes. A system is also specified for implementing a client and server infrastructure in accordance with the method. | 04-16-2015 |
| 20150326920 | SWITCHING OF THE SOURCE FOR TELEVISION CONTENT - A set-top box or media server device may operate to switch the source of incoming television content to, for example, improve power efficiency of the device. In one implementation, the device may receiving a television channel as part of a modulated television signal and extract, by a tuner associated with the device, the television channel from the modulated television signal. The device may determine to switch reception of the television channel from the modulated television signal to a packet-based video stream corresponding to the television channel. The device may provide the television channel, as received via the packet-based video stream, to the display device in place of the television channel received via the modulated television signal. | 11-12-2015 |
| 20150334435 | Network Video Streaming With Trick Play Based on Separate Trick Play Files - Network services encode multimedia content, such as video, into multiple adaptive bitrate streams of encoded video and a separate trick play stream of encoded video to support trick play features. The trick play stream is encoded at a lower encoding bitrate and frame rate than each of the adaptive bitrate streams. The adaptive bitrate streams and the trick play stream are stored in the network services. During normal content streaming and playback, a client device downloads a selected one of the adaptive bitrate streams from network serviced for playback at the client device. To implement a trick play feature, the client device downloads the trick play stream from the network services for trick play playback. | 11-19-2015 |
| 20150350700 | MEDIA REQUESTS FOR TRICKPLAY - An embodiment of a method of requesting and receiving a media stream can include, as performed by a computing device, responsive to a control input to control an enhanced playback mode for a media stream, determining a video frame to display in the enhanced playback mode of the media stream; requesting the determined frame from a media source over at least one connection between the computing device and the media source; predicting a second video frame for the enhanced playback mode; and requesting the predicted second frame from the media source over the at least one connection before receiving the determined video frame over the at least one connection. | 12-03-2015 |
| 20150373383 | TRICK-PLAY STREAMS FOR ADAPTIVE BITRATE STREAMING - A method of generating a trick-play stream is provided that includes providing a master trick-play stream having a plurality of groups of pictures, wherein each group of pictures comprises a leading intra-coded frame and a plurality of inter-coded frames, and frames within of each group of pictures encoded with a temporally scalable hierarchical encoding relationship, deriving a trick-play stream from the master trick-play stream for a particular temporal resolution by skipping a consistent pattern of frames from each group of pictures that are not needed to decode other frames at the particular temporal resolution according to the temporally scalable hierarchical encoding relationship, and providing the trick-play stream to a client device, wherein the trick-play stream is packaged to appear to the client device as a standards-compliant adaptive bitrate stream. | 12-24-2015 |
| 20160007053 | Dynamic Generation of Media Content Assets for a Content Delivery Network - Systems, apparatuses, methods, and software for using a network to efficiently distributing media content assets from a virtually unlimited content library and/or other storage to a plurality of client devices, as well as bi-directional local content sharing between head ends, and dynamic distribution and generation of media content assets within the network. | 01-07-2016 |
| 20160080800 | AUTOMATICALLY RECORDING SUPPLEMENTAL CONTEST - A content provider transmits instructions to a content receiver to record multiple instances of content. The instances of content are included in the same frequency band of a broadcast transmitted by the content provider via a first communication link and scrambled utilizing the same control word. The content provider determines to supplement the multiple instances of content and transmits an instruction to record a supplemental instance of content from a second content provider via a second communication link. The content receiver receives the instructions and accordingly receives, descrambles, and stores the multiple instances of content and the supplemental instance of content. In some implementations, the first communication link may be a satellite communication link and the second communication link may be a different type of communication link such as a terrestrial broadcast communication link and/or an Internet protocol communication link. | 03-17-2016 |
| 20160142778 | NETWORK CAMERA, NETWORK CAMERA CONTROL TERMINAL, AND VIDEO RECORDING/DELIVERING SYSTEM - One of the constituent devices of a video recording/delivering system can be replaced with a generic IT device, without impairing functions which are implemented by the entire video recording/delivering system by using a dedicated protocol specialized for the video recording/delivering system among the devices which constitute the video recording/delivering system, thereby reducing the cost of the video recording/delivering system. Each network camera receives a video data delivery request, which is transmitted from a network camera control terminal by using a dedicated protocol specialized for a video recording/delivering system, by using the dedicated protocol specialized for the video recording/delivering system and delivers, in response to the video data delivery request, currently captured live video data, or video data which are obtained from a storage device by using a general-purpose protocol, to the network camera control terminal by using the dedicated protocol specialized for the video recording/delivering system. | 05-19-2016 |
| 20160173957 | METHOD AND APPARATUS FOR PROCESSING CONTENT RECORDING IN NETWORK | 06-16-2016 |
| 20160192030 | SEAMLESS TRICK-MODE WITH DECREASED LATENCY FOR LIVE TRANSCODE STREAMING - A method for performing trick-mode operations with decreased latency for transcode streaming includes receiving and recording a stream of video data. A single transcoder may transcode the stream of video data and generate output video data in an output buffer following. Segmentation index information may be generated that refers to the output data in the output buffer. Skip-backwards, skip-ahead, and resume requests received from a client device are responded by retrieving transcoded video data from the output buffer or retrieving and transcoding video data from an input storage. A method for performing skip-ahead trick-mode operation with decreased latency may use two transcoders such as two threads of the single transcoder to transcode temporally current content and forward content. The forward content may be associated with a forward time offset with respect to the temporally current content. The transcoded forward content is provided in response to skip-ahead trick mode request. | 06-30-2016 |
