US20150189371A1 - Distributed Recording of Content - Google Patents
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- US20150189371A1 US20150189371A1 US14/634,051 US201514634051A US2015189371A1 US 20150189371 A1 US20150189371 A1 US 20150189371A1 US 201514634051 A US201514634051 A US 201514634051A US 2015189371 A1 US2015189371 A1 US 2015189371A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4334—Recording operations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/21—Server components or server architectures
- H04N21/218—Source of audio or video content, e.g. local disk arrays
- H04N21/21815—Source of audio or video content, e.g. local disk arrays comprising local storage units
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/21—Server components or server architectures
- H04N21/218—Source of audio or video content, e.g. local disk arrays
- H04N21/2183—Cache memory
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/21—Server components or server architectures
- H04N21/222—Secondary servers, e.g. proxy server, cable television Head-end
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
- H04N21/4147—PVR [Personal Video Recorder]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/43615—Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/458—Scheduling content for creating a personalised stream, e.g. by combining a locally stored advertisement with an incoming stream; Updating operations, e.g. for OS modules ; time-related management operations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/458—Scheduling content for creating a personalised stream, e.g. by combining a locally stored advertisement with an incoming stream; Updating operations, e.g. for OS modules ; time-related management operations
- H04N21/4583—Automatically resolving scheduling conflicts, e.g. when a recording by reservation has been programmed for two programs in the same time slot
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
Definitions
- a system for distributing video content is typically maintained by a service provider, which can be, for example, a television service provider (e.g., a national or local television network), a cable television service provider or multiple system operator (MSO), an Internet service provider, a satellite broadcast system service provider, or other suitable service provider.
- a television service provider e.g., a national or local television network
- MSO multiple system operator
- Internet service provider e.g., a satellite broadcast system service provider, or other suitable service provider.
- HD content is becoming increasingly prevalent.
- SD content standard definition (SD) content can be streamed to media players/servers, such as a set-top box (STB), which may include personal video recorder (PVR) or digital video recorder (DVR) functionality.
- PVR personal video recorder
- DVR digital video recorder
- PVR/DVR-enabled devices are able to store the streamed content, e.g., by recording the streamed content to a local disk or other persistent storage within or connected to the STB.
- Such PVR/DVR-enabled devices are limited by their local storage capacity; and if streamed content is HD, then the disk space requirement can be critical, as HD content requires more disk space than SD content.
- PVR/DVR-enabled devices can be connected in a network, such as a multi-room DVR (MR-DVR) implementation.
- MR-DVR multi-room DVR
- a media server such as a Multimedia over Coax Alliance (MoCA) enabled DVR set-top box, can deliver DVR content to other MoCA-enabled client set-top boxes in other rooms throughout a home.
- MoCA Multimedia over Coax Alliance
- each one of those devices may create a copy of the same content in its local storage. This creates redundancy in a network, such as a MR-DVR implementation, where content can be shared between connected devices.
- a method for distributed recording of content in a client system having a home network connecting a content broker and a plurality of set-top boxes (STBs) with digital video recording capability.
- STBs set-top boxes
- a command is received from a user to begin recording a content item.
- a query is sent from the requesting STB to the content broker to determine whether the content item is being recorded by any other STB of the plurality of STBs.
- a response is received from the content broker. If the response indicates that none of the plurality of STBs is then currently recording the content item, the content item is recorded in the requesting STB. If the response identifies a recording STB that is then currently recording the requested content, an internal content list is updated in the requesting STB to identify the recording STB.
- a method for playback of distributed content in a client system having a home network connecting a content broker and a plurality of set-top boxes (STBs) with digital video recording capability.
- STBs set-top boxes
- a command is received from a user to begin playback of a content item.
- a determination is made of whether the content item was remotely recorded in a recording STB. If the content item was remotely recorded in a recording STB, the recording STB is contacted through the home network to request streaming of the content item from the recording STB to the requesting STB.
- the content is received from the recording STB, and the received content is displayed to the user.
- a method for distributed recording of content in a client system having a home network connecting a content broker and a plurality of set-top boxes (STBs) with digital video recording capability.
- STBs set-top boxes
- a query is received from a requesting STB to determine whether a content item is being recorded by any other STB of the plurality of STBs. If none of the plurality of STBs is then currently recording the content item, a response is sent from the content broker to the requesting STB so that the content item can be recorded in the requesting STB. If a recording STB is then currently recording the requested content, a response is sent from the content broker to the requesting STB comprising a device identifier associated with the recording STB.
- FIG. 1 is a block diagram that illustrates an exemplary content distribution system in accordance with an embodiment of the present invention.
- FIG. 2 is a flow diagram that illustrates a method for distributed recording of content according to an embodiment of the present invention.
- FIG. 3 is a flow diagram that illustrates a method for playback of distributed content according to a further embodiment of the present invention.
- aspects of the present invention provide a method for distributed recording of streamed content in PVR/DVR-enabled devices, making use of the networked device architecture for efficient use of storage.
- FIG. 1 illustrates an exemplary content distribution system 100 in accordance with an embodiment of the present invention.
- FIG. 1 illustrates an exemplary content distribution system 100 in accordance with an embodiment of the present invention.
- FIG. 1 illustrates an exemplary content distribution system 100 in accordance with an embodiment of the present invention.
- FIG. 1 illustrates an exemplary content distribution system 100 in accordance with an embodiment of the present invention.
- FIG. 1 illustrates an exemplary content distribution system 100 in accordance with an embodiment of the present invention.
- FIG. 1 illustrates an exemplary content distribution system 100 in accordance with an embodiment of the present invention.
- Content distribution system 100 includes a video server system 101 and at least one client system 111 , the two of which are connected by an access network 110 .
- communication link 151 A connects the server system 101 to the access network 110
- communication link 151 B connects the client system 111 to the access network 110 .
- Conventional content distribution systems typically include a plurality of client systems 111 , not shown.
- the server system 101 stores, manages and delivers video content requested by a client system 111 via the access network 110 .
- Access network 110 and communication links 151 A, 151 B can include, for example, a transmission medium such as an optical fiber, a coaxial cable, a hybrid fiber coaxial (HFC) network, or other suitable transmission media or wireless telecommunications.
- a transmission medium such as an optical fiber, a coaxial cable, a hybrid fiber coaxial (HFC) network, or other suitable transmission media or wireless telecommunications.
- HFC hybrid fiber coaxial
- the server system 101 typically is located in a headend (not shown) or other suitable location within the content distribution system 100 .
- the headend typically is a regional or local hub that is part of a larger service provider distribution system, such as a cable television distribution system.
- the content distribution system 100 typically is based on a central server architecture.
- the server system 101 typically is centrally located with respect to a plurality of client systems 111 , and connects to each client system 111 directly via a dedicated transmission medium (in some embodiments, communication link 151 B) of access network 110 .
- the content distribution system 100 can be distributed; for example, content distribution system 100 can comprise a plurality of server systems 101 located in one or more headends.
- an exemplary server system 101 can include a plurality of servers, controllers, and/or processors, e.g., for encoding and distributing video content.
- Server system 101 receives, through access network 110 , requests from a client system 111 .
- Server system 101 and client system 111 exchange information with one another through access network 110 ; for example, a user interface (UI) server (not shown) of server system 101 can send information for presentation to a user 120 , and the client system 111 can send to the server system 101 information, commands, and the like, received in a set-top box (such as requesting STB 150 ) via an input device 112 from user 120 .
- UI user interface
- each client system 111 can be associated with one or more users 120 .
- server system 101 can receive requests for content (e.g., from client system 111 ), interpret the requests, pull requested content (e.g., from a database), and deliver to client system 111 a content package corresponding to the requested content.
- the content package can be delivered via a video processor (not shown) in server system 101 that prepares and sends the data through access network 110 following proper protocols.
- Client system 111 includes a content broker 130 and a plurality of set-top boxes, each connected to access network 110 and to one another by a home network, such as a network of coaxial cables.
- a home network such as a network of coaxial cables.
- at least two of the set-top boxes are PVR/DVR-enabled.
- a first one of the PVR/DVR-enabled set-top boxes is designated as a requesting STB 150
- a second one of the PVR/DVR-enabled set-top boxes is designated as a recording STB 140 .
- the designation of a requesting STB 150 and a recording STB 140 in FIG. 1 does not mean that each STB has a dedicated function; rather, any of the STBs in client system 111 can become either a requesting STB or a recording STB, if and when such functionality is required by a user 120 .
- the content broker 130 is a designated server in the home network that includes the plurality of set-top boxes.
- content broker 130 can be included in one of the set-top boxes of client system 111 , such as receiving STB 140 or requesting STB 150 , or another STB.
- content broker 130 can be included in a residential gateway device, or in a separate computing device.
- the content broker 130 is able to store information such as metadata related to the ongoing recording of content in the network.
- metadata can include, for each item of content, a content identifier (e.g., a unique numeric value), a content name (e.g., an ASCII string representing a name for the content, such as a program name or episode title), a list of one or more device identifiers for identifying the device (e.g., an STB) in which the recorded content is stored, and for each device identifier one or more duration values (e.g., indicating the duration of recorded content stored in each device, or a beginning and ending byte offset or time offset for the recorded content).
- a content identifier e.g., a unique numeric value
- a content name e.g., an ASCII string representing a name for the content, such as a program name or episode title
- a list of one or more device identifiers for identifying the device (e.g., an STB) in
- the content broker 130 can periodically broadcast some or all of the metadata related to the ongoing recording of content in the network.
- metadata related to the ongoing recording of content in the network can be queried by a requesting STB 150 before the requesting STB 150 attempts to record the content.
- the requesting STB 150 is shown to be connected to an input device 112 , and a display 116 .
- Examples of display 116 include a television or a monitor.
- input device 112 and one display 116 are depicted in FIG. 1 ; however, in a typical configuration, each of the set-top boxes in client system 111 is similarly connected to a corresponding input device 112 and display 116 .
- set-top does not in any way limit the physical placement of a set-top box such as STBs 140 , 150 . That is, a set-top box need not be positioned on top of a television set.
- Each set-top box is any suitable signal processing device or system for processing video signals, such as any signal converter or decoder (set-top) box, or other suitable computing device or video device with set-top box and/or cable modem capabilities, including a residential gateway, an internet protocol (IP), satellite or cable digital video recorder, a digital video disk (DVD) recorder, a computer, or a home media server system.
- IP internet protocol
- DVD digital video disk
- a set-top box can be a laptop, notebook, or tablet computer, or a mobile device, or can be built into the display 116 .
- An exemplary set-top box comprises a computing device that connects the display 116 and an external signal source, turning the signal into a content stream that the display 116 is able to render and display.
- an exemplary set-top box can convert data signals to audio/video content and output the data to display 116 , and is communicatively coupled to the display 116 via a wired or wireless connection.
- a set-top box and/or content server 130 can be completely or partially configured in the form of hardware circuitry and/or other hardware components within a larger device or group of components.
- a set-top box and/or content server 130 can be completely or partially configured in the form of software, e.g., as processing instructions or one or more sets of logic or computer code.
- the logic or processing instructions typically are stored in a data storage device, which typically is coupled to a processor or controller. Both the data storage device and the processor or controller can be included as part of a set-top box, although such is not necessary.
- the processor or controller accesses the necessary instructions from the data storage device and executes the instructions or transfers the instructions to the appropriate location within the set-top box.
- An exemplary set-top box is able to receive input commands from a corresponding input device 112 and send requests embodied in the input commands through access network 110 to server system 101 .
- a user 120 can operate input device 112 to send commands to a requesting STB 150 .
- user 120 can use input device 112 to control a user interface (UI) application of requesting STB 150 (e.g., for navigation and selection of content items from menus).
- UI user interface
- Input device 112 is communicatively coupled to the requesting STB 150 either via a wired or wireless connection.
- input device 112 can be a remote control device.
- input device 112 can be a computer (e.g., a desktop, laptop, notebook, or tablet computer), or a mobile device or smartphone, and/or can be completely or partially configured in the form of software running on a computer.
- input device 112 can be built into the requesting STB 150 .
- the UI application upon receipt of input commands, such as changing to a new channel, the UI application causes the requesting STB 150 to send corresponding instructions upstream through access network 110 to server system 101 .
- Other set-top boxes in client system 111 such as recording STB 140 , are similarly able to receive commands from a corresponding input device 112 .
- FIG. 2 is a flow diagram that illustrates a method 200 for distributed recording of content according to an embodiment of the present invention.
- any PVR/DVR-enabled set-top box in client system 111 attempts to begin recording a content item.
- user 120 of requesting STB 150 uses input device 112 to request recording of a content item (e.g., a movie or a television program) delivered from the server system 101 .
- a content item e.g., a movie or a television program
- the requesting STB 150 queries the content broker 130 to determine whether the same content item is being recorded by any other STB in the client system 111 .
- the request includes a device identifier uniquely identifying the requesting STB 150 .
- the content broker 130 responds with information, such as a device identifier that identifies a set-top box that is then currently recording the requested content (i.e., recording STB 140 ); or, in the alternative, responds with information indicating that none of the set-top boxes in client system 111 is then currently recording the requested content.
- information such as a device identifier that identifies a set-top box that is then currently recording the requested content (i.e., recording STB 140 ); or, in the alternative, responds with information indicating that none of the set-top boxes in client system 111 is then currently recording the requested content.
- step 240 if the content broker 130 responds with information indicating that none of the set-top boxes in client system 111 is then currently recording the requested content, then requesting STB 150 begins recording the requested content, and notifies the content broker 130 that it is doing so.
- step 250 if the content broker 130 responds with information identifying a set-top box that is then currently recording the requested content (i.e., recording STB 140 ), then the requesting STB 150 does not start recording, but instead updates an internal content list to identify the remote recording.
- the internal content list stores the information received from content broker 130 , such as the device identifier that identifies a set-top box that is then currently recording the requested content (e.g., recording STB 140 ).
- step 260 when recording is terminated in the recording STB 140 (either by completion, or by a termination event such as a command received from user 120 ), the content broker 130 notifies the requesting STB 150 of the termination.
- step 270 if the requesting STB 150 determines that the duration of the recording in the recording STB 140 is less than the requested recording duration, then the requesting STB 150 begins recording the remaining duration of the content in its local storage.
- FIG. 3 is a flow diagram that illustrates a method 300 for playback of distributed content according to an embodiment of the present invention.
- any PVR/DVR-enabled set-top box in client system 111 attempts to begin playing a remotely recorded content item.
- user 120 of requesting STB 150 uses input device 112 to request playback of a content item (e.g., a movie or a television program) which was previously requested by the requesting STB 150 .
- a content item e.g., a movie or a television program
- the requesting STB 150 internally stored information received from content broker 130 , such as the device identifier that identifies a set-top box that was then-currently recording the requested content (e.g., recording STB 140 ). Accordingly, the requesting STB 150 does not need to contact the content broker 130 to obtain this information at the time the user 120 requests playback of the content item.
- step 320 the requesting STB 150 contacts the recording STB 140 through the home network and requests streaming of the content from the recording STB 140 to the requesting STB 150 .
- step 330 the streaming content from the recording STB 140 is displayed by the requesting STB 150 to the user 120 (e.g., on display 116 ).
- step 340 if the requesting STB 150 determines that the duration of the recording in the recording STB 140 was less than the requested recording duration, then the requesting STB 150 begins playing back the remaining duration of the content from its local storage and displays the remaining duration of the content to the user 120 (e.g., on display 116 ).
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
Description
- A system for distributing video content is typically maintained by a service provider, which can be, for example, a television service provider (e.g., a national or local television network), a cable television service provider or multiple system operator (MSO), an Internet service provider, a satellite broadcast system service provider, or other suitable service provider.
- High definition (HD) video content is becoming increasingly prevalent. In a conventional system, HD content and standard definition (SD) content can be streamed to media players/servers, such as a set-top box (STB), which may include personal video recorder (PVR) or digital video recorder (DVR) functionality.
- Conventional PVR/DVR-enabled devices are able to store the streamed content, e.g., by recording the streamed content to a local disk or other persistent storage within or connected to the STB. Such PVR/DVR-enabled devices are limited by their local storage capacity; and if streamed content is HD, then the disk space requirement can be critical, as HD content requires more disk space than SD content.
- PVR/DVR-enabled devices can be connected in a network, such as a multi-room DVR (MR-DVR) implementation. For example, in an illustrative MR-DVR implementation, a media server, such as a Multimedia over Coax Alliance (MoCA) enabled DVR set-top box, can deliver DVR content to other MoCA-enabled client set-top boxes in other rooms throughout a home.
- If more than one PVR/DVR-enabled device wants to record the same content, then each one of those devices may create a copy of the same content in its local storage. This creates redundancy in a network, such as a MR-DVR implementation, where content can be shared between connected devices.
- In one embodiment of the present invention, a method is provided for distributed recording of content in a client system having a home network connecting a content broker and a plurality of set-top boxes (STBs) with digital video recording capability. In a requesting STB, a command is received from a user to begin recording a content item. A query is sent from the requesting STB to the content broker to determine whether the content item is being recorded by any other STB of the plurality of STBs. A response is received from the content broker. If the response indicates that none of the plurality of STBs is then currently recording the content item, the content item is recorded in the requesting STB. If the response identifies a recording STB that is then currently recording the requested content, an internal content list is updated in the requesting STB to identify the recording STB.
- In another embodiment of the present invention, a method is provided for playback of distributed content in a client system having a home network connecting a content broker and a plurality of set-top boxes (STBs) with digital video recording capability. In a requesting STB, a command is received from a user to begin playback of a content item. A determination is made of whether the content item was remotely recorded in a recording STB. If the content item was remotely recorded in a recording STB, the recording STB is contacted through the home network to request streaming of the content item from the recording STB to the requesting STB. The content is received from the recording STB, and the received content is displayed to the user.
- In a further embodiment of the present invention, a method is provided for distributed recording of content in a client system having a home network connecting a content broker and a plurality of set-top boxes (STBs) with digital video recording capability. In the content broker, a query is received from a requesting STB to determine whether a content item is being recorded by any other STB of the plurality of STBs. If none of the plurality of STBs is then currently recording the content item, a response is sent from the content broker to the requesting STB so that the content item can be recorded in the requesting STB. If a recording STB is then currently recording the requested content, a response is sent from the content broker to the requesting STB comprising a device identifier associated with the recording STB.
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FIG. 1 is a block diagram that illustrates an exemplary content distribution system in accordance with an embodiment of the present invention. -
FIG. 2 is a flow diagram that illustrates a method for distributed recording of content according to an embodiment of the present invention. -
FIG. 3 is a flow diagram that illustrates a method for playback of distributed content according to a further embodiment of the present invention. - Aspects of the present invention provide a method for distributed recording of streamed content in PVR/DVR-enabled devices, making use of the networked device architecture for efficient use of storage.
- Before describing in detail embodiments that are in accordance with the present invention, it should be observed that the embodiments reside primarily in combinations of method steps and apparatus components related to a system and method for distributed recording of content. Accordingly, the apparatus components and method steps have been represented where appropriate by conventional symbols in the drawings, showing only those specific details that are pertinent to understanding the embodiments of the present invention so as not to obscure the disclosure with details that will be readily apparent to those of ordinary skill in the art having the benefit of the description herein.
- In this document, relational terms such as first and second, top and bottom, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms “comprises,” “comprising,” or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element preceded by “comprises . . . a” does not, without more constraints, preclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.
-
FIG. 1 illustrates an exemplarycontent distribution system 100 in accordance with an embodiment of the present invention. However, it will be understood by a person having ordinary skill in the art that aspects of the invention can be practiced using a system having other than the specific features or limitations of the illustrativecontent distribution system 100 described herein. -
Content distribution system 100 includes avideo server system 101 and at least oneclient system 111, the two of which are connected by anaccess network 110. For example,communication link 151A connects theserver system 101 to theaccess network 110, andcommunication link 151B connects theclient system 111 to theaccess network 110. Conventional content distribution systems typically include a plurality ofclient systems 111, not shown. Theserver system 101 stores, manages and delivers video content requested by aclient system 111 via theaccess network 110.Access network 110 andcommunication links - The
server system 101 typically is located in a headend (not shown) or other suitable location within thecontent distribution system 100. The headend typically is a regional or local hub that is part of a larger service provider distribution system, such as a cable television distribution system. Thecontent distribution system 100 typically is based on a central server architecture. In such an architecture, theserver system 101 typically is centrally located with respect to a plurality ofclient systems 111, and connects to eachclient system 111 directly via a dedicated transmission medium (in some embodiments,communication link 151B) ofaccess network 110. In other embodiments, thecontent distribution system 100 can be distributed; for example,content distribution system 100 can comprise a plurality ofserver systems 101 located in one or more headends. In further embodiments, anexemplary server system 101 can include a plurality of servers, controllers, and/or processors, e.g., for encoding and distributing video content. -
Server system 101 receives, throughaccess network 110, requests from aclient system 111.Server system 101 andclient system 111 exchange information with one another throughaccess network 110; for example, a user interface (UI) server (not shown) ofserver system 101 can send information for presentation to auser 120, and theclient system 111 can send to theserver system 101 information, commands, and the like, received in a set-top box (such as requesting STB 150) via aninput device 112 fromuser 120. In an embodiment, eachclient system 111 can be associated with one ormore users 120. - In an illustrative embodiment,
server system 101 can receive requests for content (e.g., from client system 111), interpret the requests, pull requested content (e.g., from a database), and deliver to client system 111 a content package corresponding to the requested content. For example, the content package can be delivered via a video processor (not shown) inserver system 101 that prepares and sends the data throughaccess network 110 following proper protocols. -
Client system 111 includes acontent broker 130 and a plurality of set-top boxes, each connected to accessnetwork 110 and to one another by a home network, such as a network of coaxial cables. In an embodiment, at least two of the set-top boxes are PVR/DVR-enabled. For illustrative purposes, a first one of the PVR/DVR-enabled set-top boxes is designated as a requestingSTB 150, and a second one of the PVR/DVR-enabled set-top boxes is designated as a recording STB 140. The designation of a requesting STB 150 and a recording STB 140 inFIG. 1 does not mean that each STB has a dedicated function; rather, any of the STBs inclient system 111 can become either a requesting STB or a recording STB, if and when such functionality is required by auser 120. - The
content broker 130 is a designated server in the home network that includes the plurality of set-top boxes. In an embodiment,content broker 130 can be included in one of the set-top boxes ofclient system 111, such as receiving STB 140 or requesting STB 150, or another STB. In a further embodiment,content broker 130 can be included in a residential gateway device, or in a separate computing device. - The
content broker 130 is able to store information such as metadata related to the ongoing recording of content in the network. Examples of such metadata can include, for each item of content, a content identifier (e.g., a unique numeric value), a content name (e.g., an ASCII string representing a name for the content, such as a program name or episode title), a list of one or more device identifiers for identifying the device (e.g., an STB) in which the recorded content is stored, and for each device identifier one or more duration values (e.g., indicating the duration of recorded content stored in each device, or a beginning and ending byte offset or time offset for the recorded content). - In some embodiments, the
content broker 130 can periodically broadcast some or all of the metadata related to the ongoing recording of content in the network. In other embodiments, metadata related to the ongoing recording of content in the network can be queried by a requestingSTB 150 before the requestingSTB 150 attempts to record the content. - For further illustrative purposes, the requesting
STB 150 is shown to be connected to aninput device 112, and adisplay 116. Examples ofdisplay 116 include a television or a monitor. For ease of illustration, only oneinput device 112 and onedisplay 116 are depicted inFIG. 1 ; however, in a typical configuration, each of the set-top boxes inclient system 111 is similarly connected to acorresponding input device 112 anddisplay 116. - It will be understood by a person having ordinary skill in the art that the terminology “set-top” does not in any way limit the physical placement of a set-top box such as
STBs display 116. An exemplary set-top box comprises a computing device that connects thedisplay 116 and an external signal source, turning the signal into a content stream that thedisplay 116 is able to render and display. For example, an exemplary set-top box can convert data signals to audio/video content and output the data to display 116, and is communicatively coupled to thedisplay 116 via a wired or wireless connection. - A set-top box and/or
content server 130 can be completely or partially configured in the form of hardware circuitry and/or other hardware components within a larger device or group of components. Alternatively, a set-top box and/orcontent server 130 can be completely or partially configured in the form of software, e.g., as processing instructions or one or more sets of logic or computer code. In such configuration, the logic or processing instructions typically are stored in a data storage device, which typically is coupled to a processor or controller. Both the data storage device and the processor or controller can be included as part of a set-top box, although such is not necessary. The processor or controller accesses the necessary instructions from the data storage device and executes the instructions or transfers the instructions to the appropriate location within the set-top box. - An exemplary set-top box is able to receive input commands from a
corresponding input device 112 and send requests embodied in the input commands throughaccess network 110 toserver system 101. As depicted inFIG. 1 , auser 120 can operateinput device 112 to send commands to a requestingSTB 150. For example,user 120 can useinput device 112 to control a user interface (UI) application of requesting STB 150 (e.g., for navigation and selection of content items from menus).Input device 112 is communicatively coupled to the requestingSTB 150 either via a wired or wireless connection. In some embodiments,input device 112 can be a remote control device. In further embodiments,input device 112 can be a computer (e.g., a desktop, laptop, notebook, or tablet computer), or a mobile device or smartphone, and/or can be completely or partially configured in the form of software running on a computer. In still further embodiments,input device 112 can be built into the requestingSTB 150. In an exemplary embodiment, upon receipt of input commands, such as changing to a new channel, the UI application causes the requestingSTB 150 to send corresponding instructions upstream throughaccess network 110 toserver system 101. Other set-top boxes inclient system 111, such asrecording STB 140, are similarly able to receive commands from acorresponding input device 112. -
FIG. 2 is a flow diagram that illustrates amethod 200 for distributed recording of content according to an embodiment of the present invention. - In
step 210, any PVR/DVR-enabled set-top box inclient system 111 attempts to begin recording a content item. For example,user 120 of requestingSTB 150 usesinput device 112 to request recording of a content item (e.g., a movie or a television program) delivered from theserver system 101. - In
step 220, the requestingSTB 150 queries thecontent broker 130 to determine whether the same content item is being recorded by any other STB in theclient system 111. The request includes a device identifier uniquely identifying the requestingSTB 150. - In
step 230, thecontent broker 130 responds with information, such as a device identifier that identifies a set-top box that is then currently recording the requested content (i.e., recording STB 140); or, in the alternative, responds with information indicating that none of the set-top boxes inclient system 111 is then currently recording the requested content. - In
step 240, if thecontent broker 130 responds with information indicating that none of the set-top boxes inclient system 111 is then currently recording the requested content, then requestingSTB 150 begins recording the requested content, and notifies thecontent broker 130 that it is doing so. - In
step 250, if thecontent broker 130 responds with information identifying a set-top box that is then currently recording the requested content (i.e., recording STB 140), then the requestingSTB 150 does not start recording, but instead updates an internal content list to identify the remote recording. The internal content list stores the information received fromcontent broker 130, such as the device identifier that identifies a set-top box that is then currently recording the requested content (e.g., recording STB 140). - In
step 260, when recording is terminated in the recording STB 140 (either by completion, or by a termination event such as a command received from user 120), thecontent broker 130 notifies the requestingSTB 150 of the termination. - In
step 270, if the requestingSTB 150 determines that the duration of the recording in therecording STB 140 is less than the requested recording duration, then the requestingSTB 150 begins recording the remaining duration of the content in its local storage. -
FIG. 3 is a flow diagram that illustrates amethod 300 for playback of distributed content according to an embodiment of the present invention. - In
step 310, any PVR/DVR-enabled set-top box inclient system 111 attempts to begin playing a remotely recorded content item. For example,user 120 of requestingSTB 150 usesinput device 112 to request playback of a content item (e.g., a movie or a television program) which was previously requested by the requestingSTB 150. It is noted that atstep 250, the requestingSTB 150 internally stored information received fromcontent broker 130, such as the device identifier that identifies a set-top box that was then-currently recording the requested content (e.g., recording STB 140). Accordingly, the requestingSTB 150 does not need to contact thecontent broker 130 to obtain this information at the time theuser 120 requests playback of the content item. - In
step 320, the requestingSTB 150 contacts therecording STB 140 through the home network and requests streaming of the content from therecording STB 140 to the requestingSTB 150. - In
step 330, the streaming content from therecording STB 140 is displayed by the requestingSTB 150 to the user 120 (e.g., on display 116). - In
step 340, if the requestingSTB 150 determines that the duration of the recording in therecording STB 140 was less than the requested recording duration, then the requestingSTB 150 begins playing back the remaining duration of the content from its local storage and displays the remaining duration of the content to the user 120 (e.g., on display 116). - In the foregoing specification, specific embodiments of the present invention have been described. However, one of ordinary skill in the art appreciates that various modifications and changes can be made without departing from the scope of the present invention as set forth in the claims below. Accordingly, the specification and figures are to be regarded in an illustrative rather than a restrictive sense, and all such modifications are intended to be included within the scope of present invention. The benefits, advantages, solutions to problems, and any element(s) that may cause any benefit, advantage, or solution to occur or become more pronounced are not to be construed as a critical, required, or essential features or elements of any or all the claims. The invention is defined solely by the appended claims including any amendments made during the pendency of this application and all equivalents of those claims as issued.
Claims (21)
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US9179159B2 (en) | 2013-06-20 | 2015-11-03 | Wowza Media Systems, LLC | Distributed encoding of a video stream |
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US9774889B2 (en) * | 2015-09-10 | 2017-09-26 | Verizon Patent And Licensing Inc. | Content delivery network integration for home media client content |
US10757469B2 (en) * | 2015-12-16 | 2020-08-25 | Rovi Guides, Inc. | Methods and systems for bypassing preemptions in recorded media assets |
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