US20100023976A1 - Method and Configuration for Storing and Playing Back TV Transmissions - Google Patents
Method and Configuration for Storing and Playing Back TV Transmissions Download PDFInfo
- Publication number
- US20100023976A1 US20100023976A1 US11/910,290 US91029006A US2010023976A1 US 20100023976 A1 US20100023976 A1 US 20100023976A1 US 91029006 A US91029006 A US 91029006A US 2010023976 A1 US2010023976 A1 US 2010023976A1
- Authority
- US
- United States
- Prior art keywords
- stored
- memory
- data
- terminal
- recording
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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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
- H04N21/27—Server based end-user applications
- H04N21/274—Storing end-user multimedia data in response to end-user request, e.g. network 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
- H04N21/41—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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/27—Server based end-user applications
- H04N21/274—Storing end-user multimedia data in response to end-user request, e.g. network recorder
- H04N21/2747—Remote storage of video programs received via the downstream path, e.g. from the server
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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
- H04N21/4331—Caching operations, e.g. of an advertisement for later insertion during playback
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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
- H04N21/47—End-user applications
- H04N21/482—End-user interface for program selection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
- H04N5/775—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
- H04N7/163—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing by receiver means only
Definitions
- the present invention relates to a method and a configuration for storing and playing back TV transmissions.
- the present invention provides an improved method and an improved configuration for operating a network PVR.
- PVR personal video recorder
- DVR digital video recorder
- Time-shifted television also enables the user to “pause” a transmission viewed live initially, to take a telephone call perhaps, and to continue the playback later, whereby it would appear to the user as if he had actually paused the live broadcast and continued it later.
- the user pressing the “Pause” button has caused his PVR to record the running transmission, and pressing the “Pause” button again results in the recorded transmission on the one hand continuing to be recorded and on the other already being played back.
- multimedia PCs with suitable software are also increasingly being used as PVRs.
- PVRs home theater PC
- HTPC home theater PC
- both platform variants are in a position to offer the user further functions, such as searching for transmissions which fit thematically with his favorite transmissions.
- Common to both platform variants is the fact that the recording takes place locally with respect to the user and the quantity of transmissions that can be recorded is limited by the local disk storage unit. It is therefore often possible to transfer recorded transmissions from the internal memory of the device onto writable media such as (re-)writable CDs or DVDs. There is some effort involved in this however and, not least, the price of a PVR is also considerable.
- PVRs also suffer from the problem that a plurality of PVRs are additionally required in order to allow parallel recording of multiple transmissions.
- a network PVR was proposed in the white paper “Network PVR: Everything an Demand”, Jay Schiller, nCube Corporation, available on the Internet at http://www.ncube.com/pressroom/downloads/nvpr-whitepaper.pdf, in which memory, coding logic and codecs are made available by a provider on the cable network.
- the user receives a device which allows him to select transmissions to store and to retrieve stored transmissions which are then transferred by means of a wideband connection in real time to the user.
- a PVR or an HTPC such a device can be considerably less powerful.
- the user can lease storage space practically without limit on the central PVR server while the operator of the PVR server only needs to provide one copy of each transmission which is then distributed when required to those users who have placed this transmission in their (virtual) memory.
- such a network PVR can be implemented such that “programming” of the network PVR by the user is not required and the user instead has access to all the transmissions in his program assortment from approximately the most recent 4 weeks.
- An object of the invention is therefore to set down a method and a configuration for storing and playing back TV transmissions, which avoids this disadvantage.
- This object is achieved by a configuration for storing and playing back TV transmissions, which comprises the following:
- the invention also relates to a method for storing and playing back TV transmissions, comprising the following steps:
- An advantageous embodiment makes appropriate provision whereby the main (central) part of the data to be stored which is stored in the mass storage device delivers decodable picture and sound information only when combined with the (local) data stored in the memory of the selecting terminal. This also ensures that only users who had also programmed the stored transmissions for recording are able to retrieve them because the terminal portion of the data required for the decoding is also stored only in the terminals of this user.
- the small data set to be stored in the terminal makes it possible to dispense with conventional high-capacity hard disk drives in the terminal and to provide a flash memory or a mini hard drive as the terminal memory, a commercially available Hitachi Microdrive for instance.
- precisely this exchange process (with restricted scope) can be permitted for users in order to grant users the same rights when using the network PVR as when using analog tape devices where it is possible to pass on recordings without any difficulty.
- the terminal for example header information, a time-limited starting sequence, or every n-th data packet of the video data to be stored can be stored; the remaining data to be stored is stored in the mass storage device coupled to the PVR server.
- the data can for example be chosen such that a short intro can be played from the data present in the terminal in order to enable the user to decide immediately to delete the recorded transmission without combining the data beforehand.
- the data packets can be chosen such that a sequence of still images is present in the terminal.
- the combination of the parts of the recording stored in the memory of the selecting terminal and the parts stored in the mass storage device coupled to the PVR server can take place in the PVR server, whereby the complete video data is then sent to the terminal as a realtime data stream for playback.
- This permits the construction of a particularly simple terminal with minimal computing power.
- the combination of the parts of the recording stored in the memory of the selecting terminal and the parts stored in the mass storage device coupled to the PVR server can take place in real time in the terminal, whereby the incomplete video data is sent from the mass storage device coupled to the PVR server as a near-realtime data stream to the terminal, where it is supplemented by the data stored in the terminal and played back.
- the single FIGURE shows a configuration 100 with a network PVR or PVR server 102 and terminals 104 A . . . 104 N fed by the latter.
- the PVR server 102 receives digitally coded TV channels from an encoder 120 .
- the encoder in turn receives the TV channels from a receiver 122 which receives suitable TV signals by way of a terrestrial antenna 124 and/or satellite antenna 126 and/or TV cable 128 .
- the encoder 120 and the receiver 122 can be constructed as one device.
- the encoder 120 utilizes a codec such as MPEG2 or MPEG4 for example or codecs derived from these in order to convey the TV signals which are initially present in analog form into an efficient digital data format.
- the encoder 120 can forward this data stream unmodified to the PVR server 102 or modify it before forwarding, for example by matching the bandwidth of the data stream to the bandwidth of the link to the terminals 104 .
- the PVR server is coupled to a mass storage device 108 , for example to a hard disk drive array (HDD array).
- HDD array hard disk drive array
- Numerous methods are known in the art for building redundant mass storage device arrays from hard disks, which are nevertheless still able to deliver the stored data in its entirety in the event of failure of individual hard disks.
- the use of such a redundant array for example a redundant array comprising independent hard disks (RAID), is advantageous in conjunction with the present invention because a PVR server 102 and the attached mass storage device 108 stores the major part of the TV recordings of numerous users.
- the user terminals 104 are connected to the PVR server 102 for example by way of the TV cable network or a DSL link.
- Modern codecs permit an acceptable video quality with transfer rates upwards of a few hundred kbit/s. With the bandwidths of several Mbit/s that are technically possible over DSL links, two or more parallel video streams (for different playback devices in the user's household) or a single high-quality video stream are conceivable.
- the terminals 104 are equipped with or coupled to local memory 110 which for example can be implemented as conventional hard disk or HDD 111 and/or as flash memory 112 and/or as RAM 113 . Special forms such as mini hard drives available in flash memory card format are naturally also conceivable. In this situation, flash memory 112 has the advantage that storage of data is possible independent of the presence of a supply voltage and at the same time particularly quiet terminals 104 are made possible because flash memory has no rotating or other mechanical parts.
- the memory 110 can be permanently coupled to the terminal 104 or can be configured as exchangeable. Lesser demands apply to the memory 110 of the terminals 104 than to the mass storage device 108 in respect of redundancy and failsafe behavior. Provision can be made as a convenience feature for the user which enables him to produce backup copies of the parts of the recordings stored in his memory, for instance on a data medium (writable CD or DVD, external hard disk) not permanently situated in the terminal 104 , using a network connection on a PC or also in a separate storage area offered by the PVR service provider (not shown).
- this can be a set-top box which is connected to a picture playback device 116 .
- the terminal 104 can be integrated into the picture playback device 116 .
- the picture playback device 116 can be a conventional television. Alternatively, it can also be a monitor which does not itself have a TV tuner.
- the terminal 104 has a user interface 106 which the user can use for example in order to select TV transmissions for recording or to manage his archive of recorded TV transmissions. This user interface can, as is normal in the realm of set-top boxes, be implemented such that the user makes inputs using a remote control and sees outputs displayed on the picture playback device 116 .
- a data record identifying a TV transmission to be recorded is sent to the network-based PVR 102 which uses a scheduler to make the TV transmission available for recording.
- a user database not shown—manages the transmissions allotted for recording by a user and checks the user's authorizations, for instance as to whether the user has subscribed to the corresponding TV channel.
- the PVR server 102 checks whether a user (a single user is sufficient) has allotted this transmission for recording. If this is the case, the recording is carried out by dividing the data into a local and a central part and storing it accordingly in the memory 110 of the terminal 104 or in the mass storage device 108 . In this situation, advantageously the main part of the data is stored centrally in the mass storage device 108 and the remaining data is sent to the local memory 110 of the requesting terminal 104 . If the transmission has been programmed for recording on a plurality of terminals 104 , the local data is accordingly sent to all the terminals 104 on which the transmission has been programmed for recording.
- the division can be performed such that at least the central data stream for its part no longer delivers a decodable video signal (picture and sound). Only when both data sets (from the memory 110 of a terminal 104 and from the mass storage device 108 ) are combined can the transmission be played back in its entirety.
- a decodable video signal picture and sound
- the parts of the recording stored in the memory 110 of the selecting terminal 104 and the parts stored in the mass storage device 108 can be combined.
- the data stored in the terminal is first transferred to the PVR server, where it is combined.
- the complete video data is then sent to the terminal 104 as a realtime data stream for playback.
- This permits the construction of a particularly simple terminal 104 with minimal computing power. Since the data set stored in the terminal can be very small (several kilobytes per recording suffice in one embodiment of the invention), the user request to play back a specific transmission will only be insignificantly delayed, if at all, by the need to initially transfer data to the PVR server 102 .
- the parts of the recording stored in the memory 110 of the selecting terminal 104 and the parts stored in the mass storage device 108 can be combined in real time in the terminal 104 .
- the incomplete video data is sent by means of the PVR server 102 from the mass storage device 108 as a near-realtime data stream to the terminal 104 , where it is supplemented by the data stored in the terminal 104 and played back.
- near-realtime data stream means that depending on the type of division of data selected between local memory 110 and mass storage device 108 it is also possible for larger data sets to be situated in the local memory, intro sequences for instance, which are first played back before the data which may have been buffered until then is prepared for playback from the mass storage device 108 .
- the transfer of the data to the terminal should take place at least at the data rate with which the material was coded.
- the playback can begin when requested by the user without delay caused by network operations because the intro can firstly be played back from the local memory while the remaining data is requested in the background from the mass storage device 108 and prepared for the playback. This accommodates the user expectation of being able to begin the playback without delay at the press of a button.
- the present invention can be used not only when—as described above—only one shared copy of a transmission is stored in the mass storage device 108 for all users but also in a situation when a separate copy of a transmission is stored in the mass storage device 108 for each user. In this case too it is possible and in some cases necessary to divide the stored transmissions into a part stored locally with regard to the user and a part stored centrally with regard to the service provider.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Human Computer Interaction (AREA)
- Television Signal Processing For Recording (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Management Or Editing Of Information On Record Carriers (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/910,290 US20100023976A1 (en) | 2005-03-30 | 2006-03-28 | Method and Configuration for Storing and Playing Back TV Transmissions |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US66639205P | 2005-03-30 | 2005-03-30 | |
US11/910,290 US20100023976A1 (en) | 2005-03-30 | 2006-03-28 | Method and Configuration for Storing and Playing Back TV Transmissions |
PCT/EP2006/061072 WO2006103216A1 (de) | 2005-03-30 | 2006-03-28 | Verfahren und anordnung zum speichern und wiedergeben von tv-sendungen |
Publications (1)
Publication Number | Publication Date |
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US20100023976A1 true US20100023976A1 (en) | 2010-01-28 |
Family
ID=36499386
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
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US11/910,444 Active 2029-03-31 US8365234B2 (en) | 2005-03-30 | 2006-03-28 | Method and arrangement for storing and playing back TV programs |
US11/910,278 Abandoned US20100195988A1 (en) | 2005-03-30 | 2006-03-28 | Method and Configuration for Storing and Playing Back TV Programs |
US11/910,290 Abandoned US20100023976A1 (en) | 2005-03-30 | 2006-03-28 | Method and Configuration for Storing and Playing Back TV Transmissions |
US11/910,299 Abandoned US20100011390A1 (en) | 2005-03-30 | 2006-03-28 | Method and Configuration for Storing and Playing Back TV Transmissions |
US11/910,445 Abandoned US20100046913A1 (en) | 2005-03-30 | 2006-03-28 | Method and device for storing and playing back tv programmes |
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US11/910,444 Active 2029-03-31 US8365234B2 (en) | 2005-03-30 | 2006-03-28 | Method and arrangement for storing and playing back TV programs |
US11/910,278 Abandoned US20100195988A1 (en) | 2005-03-30 | 2006-03-28 | Method and Configuration for Storing and Playing Back TV Programs |
Family Applications After (2)
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US11/910,299 Abandoned US20100011390A1 (en) | 2005-03-30 | 2006-03-28 | Method and Configuration for Storing and Playing Back TV Transmissions |
US11/910,445 Abandoned US20100046913A1 (en) | 2005-03-30 | 2006-03-28 | Method and device for storing and playing back tv programmes |
Country Status (8)
Country | Link |
---|---|
US (5) | US8365234B2 (zh) |
EP (5) | EP1867166B1 (zh) |
JP (1) | JP2008535345A (zh) |
KR (2) | KR20070116282A (zh) |
CN (5) | CN101151893B (zh) |
BR (1) | BRPI0609502A2 (zh) |
CA (1) | CA2602614C (zh) |
WO (5) | WO2006103216A1 (zh) |
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- 2006-03-28 CN CN200680010157.6A patent/CN101151893B/zh not_active Expired - Fee Related
- 2006-03-28 EP EP06725344.3A patent/EP1867155B1/de not_active Not-in-force
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Also Published As
Publication number | Publication date |
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CA2602614A1 (en) | 2006-10-05 |
CN101151893B (zh) | 2015-07-22 |
US20090041433A1 (en) | 2009-02-12 |
EP1867162A1 (de) | 2007-12-19 |
CN101151900A (zh) | 2008-03-26 |
KR20070121706A (ko) | 2007-12-27 |
EP1867152B1 (de) | 2016-03-16 |
US20100195988A1 (en) | 2010-08-05 |
BRPI0609502A2 (pt) | 2010-04-13 |
WO2006103216A1 (de) | 2006-10-05 |
EP1867152A1 (de) | 2007-12-19 |
EP1867166A1 (de) | 2007-12-19 |
EP1867155A1 (de) | 2007-12-19 |
KR101222606B1 (ko) | 2013-01-16 |
WO2006103220A1 (de) | 2006-10-05 |
CN101151895A (zh) | 2008-03-26 |
EP1867166B1 (de) | 2014-12-03 |
CN101151899A (zh) | 2008-03-26 |
US20100011390A1 (en) | 2010-01-14 |
KR20070116282A (ko) | 2007-12-07 |
EP1867155B1 (de) | 2015-09-09 |
CN101151894A (zh) | 2008-03-26 |
WO2006103222A1 (de) | 2006-10-05 |
WO2006103218A1 (de) | 2006-10-05 |
US8365234B2 (en) | 2013-01-29 |
WO2006103224A1 (de) | 2006-10-05 |
JP2008535345A (ja) | 2008-08-28 |
EP1867153B1 (de) | 2014-04-30 |
CA2602614C (en) | 2012-08-28 |
CN101151893A (zh) | 2008-03-26 |
US20100046913A1 (en) | 2010-02-25 |
EP1867153A1 (de) | 2007-12-19 |
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