A digital video recorder (DVR) is an electronic device that records video in a digital format to a disk drive, USB flash drive, SD memory card, SSD or other local or networked mass storage device. The term includes set-top boxes with direct to disk recording, portable media players and TV gateways with recording capability, and digital camcorders. Personal computers are often connected to video capture devices and used as DVRs; in such cases the application software used to record video is an integral part of the DVR. Many DVRs are classified as consumer electronic devices; such devices may alternatively be referred to as personal video recorders (PVRs), particularly in Canada.
Consumer digital video recorders ReplayTV and TiVo were launched at the 1999 Consumer Electronics Show in Las Vegas, Nevada. Microsoft also demonstrated a unit with DVR capability, but this did not become available until the end of 1999 for full DVR features in Dish Network's DISHplayer receivers. TiVo shipped their first units on March 31, 1999. ReplayTV won the "Best of Show" award in the video category with Netscape co-founder Marc Andreessen as an early investor and board member, but TiVo was more successful commercially.
Legal action by media companies forced ReplayTV to remove many features such as automatic commercial skip and the sharing of recordings over the Internet, but newer devices have steadily regained these functions while adding complementary abilities, such as recording onto DVDs and programming and remote control facilities using PDAs, networked PCs, and Web browsers.
In contrast to VCRs, hard-disk based digital video recorders make "time shifting" more convenient and also allow for functions such as pausing live TV, instant replay, chasing playback (viewing a recording before it has been completed) and skipping over advertising during playback.
Many DVRs use the MPEG format for compressing the digital video. Video recording capabilities have become an essential part of the modern set-top box, as TV viewers have wanted to take control of their viewing experiences. As consumers have been able to converge increasing amounts of video content on their set-tops, delivered by traditional 'broadcast' cable, satellite and terrestrial as well as IP networks, the ability to capture programming and view it whenever they want has become a must-have function for many consumers.
At the 1999 CES, Dish Network demonstrated the hardware that would later have DVR capability with the assistance of Microsoft software. which also included WebTV Networks internet TV. By the end of 1999 the Dishplayer had full DVR capabilities and within a year, over 200,000 units were sold.
In the UK, digital video recorders are often referred to as "plus boxes" (such as BSKYB's Sky+ and Virgin Media's V+ which integrates an HD capability, and the subscription free Freesat+ and Freeview+). Freeview+ have been around in the UK since the late 2000s. British Sky Broadcasting markets a popular combined receiver and DVR as Sky+. TiVo launched a UK model in 2000, and is no longer supported, except for third party services, and the continuation of TiVo through Virgin Media in 2010. South African based Africa Satellite TV beamer Multichoice recently launched their DVR which is available on their DStv platform. In addition to ReplayTV and TiVo, there are a number of other suppliers of digital terrestrial (DTT) DVRs, including Thomson, Topfield, Fusion, Pace Micro Technology, Humax, VBox Communications, AC Ryan Playon and Advanced Digital Broadcast (ADB).
Many satellite, cable and IPTV companies are incorporating digital video recording functions into their set-top box, such as with DirecTiVo, DISHPlayer/DishDVR, Scientific Atlanta Explorer 8xxx from Time Warner, Total Home DVR from AT&T U-verse, Motorola DCT6412 from Comcast and others, Moxi Media Center by Digeo (available through Charter, Adelphia, Sunflower, Bend Broadband, and soon Comcast and other cable companies), or Sky+. Astro introduced their DVR system, called Astro MAX, which was the first PVR in Malaysia but was phased out two years after its introduction.
In the case of digital television, there is no encoding necessary in the DVR since the signal is already a digitally encoded MPEG stream. The digital video recorder simply stores the digital stream directly to disk. Having the broadcaster involved with, and sometimes subsidizing, the design of the DVR can lead to features such as the ability to use interactive TV on recorded shows, pre-loading of programs, or directly recording encrypted digital streams. It can, however, also force the manufacturer to implement non-skippable advertisements and automatically expiring recordings.
In the United States, the FCC has ruled that starting on July 1, 2007, consumers will be able to purchase a set-top box from a third-party company, rather than being forced to purchase or rent the set-top box from their cable company. This ruling only applies to "navigation devices," otherwise known as a cable television set-top box, and not to the security functions that control the user's access to the content of the cable operator. The overall net effect on digital video recorders and related technology is unlikely to be substantial as standalone DVRs are currently readily available on the open market.
In Europe Free-To-Air and Pay TV TV gateways with multiple tuners have whole house recording capabilities allowing recording of TV programs to Network Attached Storage or attached USB storage, recorded programs are then shared across the home network to tablet, smartphone, PC, Mac, Smart TV.
In 2003 many Satellite and Cable providers introduced dual-tuner digital video recorders. In the UK, BSkyB introduced their first PVR Sky+ with dual tuner support in 2001. These machines have two independent tuners within the same receiver. The main use for this feature is the capability to record a live program while watching another live program simultaneously or to record two programs at the same time, possibly while watching a previously recorded one. Kogan.com introduced a dual-tuner PVR in the Australian market allowing free-to-air television to be recorded on a removable hard drive. Some dual-tuner DVRs also have the ability to output to two separate television sets at the same time. The PVR manufactured by UEC (Durban, South Africa) and used by Multichoice and Scientific Atlanta 8300DVB PVR have the ability to view two programs while recording a third using a triple tuner.
In the United States, DVRs were used by 32 percent of all TV households in 2009, and 38 percent by 2010, with viewership among 18- to 40-year-olds 40 percent higher in homes that have them.
DVRs are integrated into some television sets (TVs). These systems simplify wiring and operation because they employ a single power cable, have no interconnected ports (e.g., HDMI), and share a common remote control.
VESA-compatible DVRs are designed to attach to the VESA mounting holes (100×100 mm) on the back of an LCD television set (TV), allowing users to combine the TV and DVR into an integrated unit.
Over-the-air DVRs are standalone set-top-boxes that record broadcast television programs. Several companies have launched over-the-air DVR products for the consumer market over the past few years.
Some pay-TV operators provide set-top boxes that allow subscribers to attach their own network-attached storage (NAS) hard drives or solid-state or flash memory to record video and other media files (e.g., audio and photos).
There are many free and open source software DVR applications available for Linux. For example, TV gateway interfaces to DVB tuners and provides network tuner and TV server functions, which allows live viewing and recording over IP networks. Other examples include MythTV, Video Disk Recorder (VDR), LinuxMCE, TiVo, VBox Home TV Gateway, and Kodi (formerly XBMC).
Elgato makes a series of digital video recording devices called EyeTV. The software supplied with each device is also called EyeTV, and is available separately for use on compatible third-party tuners from manufacturers such as Pinnacle, TerraTec, and Hauppauge.
SageTV provided DVR software for the Mac but no longer sells it. Previously sold devices support the Hauppauge HVR-950, myTV.PVR and HDHomeRun hardware with its DVR software. SageTV software also included the ability to watch YouTube and other online video with a remote control.
MythTV (see above) also runs under Mac OS X, but most recording devices are currently only supported under Linux. Precompiled binaries are available for the MythTV front-end, allowing a Mac to watch video from (and control) a MythTV server running under Linux.
Apple provides applications in the FireWire software developer kit which allow any Mac with a FireWire port to record the MPEG2 transport stream from a FireWire-equipped cable box (for example: Motorola DCT62xx, including HD streams). Applications can also change channels on the cable box via the firewire interface. Only broadcast channels can be recorded as the rest of the channels are encrypted. FireRecord (formerly iRecord) is a free scheduled-recording program derived from this SDK.
There are also several commercial applications available including CyberLink, SageTV (which is no longer available after Google acquired it in June 2011), Beyond TV (which is considered discontinued despite an official announcement from SnapStream since the last update was October 2010 and they are concentrating on their enterprise search products), DVBViewer, Showshifter, InterVideo WinDVR, the R5000-HD and Meedio (now a dead product – Yahoo! bought most of the company's technology and discontinued the Meedio line, and rebranded the software Yahoo! Go – TV, which is now a free product but only works in the U.S.). Most TV tuner cards come bundled with software which allows the PC to record television to hard disk. See TV tuner card. For example, Leadtek's WinFast DTV1000 digital TV card comes bundled with the WinFast PVR2 software, which can also record analog video from the card's composite video input socket.
Windows Media Center is a DVR software by Microsoft which was bundled with the Media Center edition of Windows XP, the Home Premium / Ultimate editions of Windows Vista, as well as most editions of Windows 7. When Windows 8 was released in 2012, Windows Media Center was not included with Windows 8 OEM or Retail installations, and was only available as a $15 add-on pack (including DVD Playback codecs) to Windows 8 Pro users.
An embeddable DVR is a standalone device that is designed to be easily integrated into more complex systems. It is typically supplied as a compact, bare circuit board that facilitates mounting it as a subsystem component within larger equipment. The control keypad is usually connected with a detachable cable, to allow it to be located on the system's exterior while the DVR circuitry resides inside the equipment.
Television and video are terms that are sometimes used interchangeably, but differ in their technical meaning. Video is the visual portion of television, whereas television is the combination of video and audio modulated onto a carrier frequency (i.e., a television channel) for delivery. Most DVRs can record both video and audio.
To record an analog signal a few steps are required. In the case of a television signal, a television tuner must first demodulate the radio frequency signal to produce baseband video. The video is then converted to digital form by a frame grabber, which converts each video image into a collection of numeric values that represent the pixels within the image. At the same time, the audio is also converted to digital form by an analog-to-digital converter running at a constant sampling rate. In many devices, the resulting digital video and audio are compressed before recording to reduce the amount of data that will be recorded, although some DVRs record uncompressed data. When compression is used, video is typically compressed using formats such as H.264 or MPEG-2, and audio is compressed using AAC or MP3.
Many consumer DVRs implement a copy-protection system called Copy Generation Management System—Analog (CGMS-A), which specifies one of four possible copy permissions by means of two bits encoded in the VBI:
CGMS-A information may be present in analog broadcast TV signals, and is preserved when the signal is recorded and played back by analog VCRs. VCRs do not understand the meanings of the bits but preserve them in case there is a subsequent attempt to copy the tape to a DVR.
Recording digital signals is generally a straightforward capture of the binary MPEG data being received. No expensive hardware is required to quantize and compress the signal (as the television broadcaster has already done this in the studio).
DVD-based PVRs available on the market as of 2006 are not capable of capturing the full range of the visual signal available with high definition television (HDTV). This is largely because HDTV standards were finalized at a later time than the standards for DVDs. However, DVD-based PVRs can still be used (albeit at reduced visual quality) with HDTV since currently available HDTV sets also have standard A/V connections.
ATSC television broadcasting is primarily used in North America. The ATSC data stream can be directly recorded by a digital video recorder, though many DVRs record only a subset of this information (that can later be transferred to DVD). An ATSC DVR will also act as a set-top box, allowing older televisions or monitors to receive digital television.
The U.S. FCC attempted to limit the abilities of DVRs with its "broadcast flag" regulation. Digital video recorders that had not won prior approval from the FCC for implementing "effective" digital rights management would have been banned from interstate commerce from July 2005, but the regulation was struck down on May 6, 2005.
DVB digital television contains audio/visual signals that are broadcast over the air in a digital rather than analog format. The DVB data stream can be directly recorded by the DVR. Devices that can use external storage devices (such as hard disks, SSDs, or other flash storage) to store and recover data without the aid of another device are sometimes called telememory devices.
Recording satellite television or digital cable signals on a digital video recorder can be more complex than recording analog signals or broadcast digital signals. There are several different transmission schemes, and the video streams may be encrypted to restrict access to subscribers only.
A satellite or cable set-top box both decrypts the signal if encrypted, and decodes the MPEG stream into an analog signal for viewing on the television. In order to record cable or satellite digital signals the signal must be captured after it has been decrypted but before it is decoded; this is how DVRs built into set-top boxes work.
Cable and satellite providers often offer their own digital video recorders along with a service plan. These DVRs have access to the encrypted video stream, and generally enforce the provider's restrictions on copying of material even after recording.
Many DVD-based DVRs have the capability to copy content from a source DVD (ripping). In the United States, this is prohibited under the Digital Millennium Copyright Act if the disc is encrypted. Most such DVRs will therefore not allow recording of video streams from encrypted movie discs.
A digital camcorder combines a camera and a digital video recorder.
Some DVD-based DVRs incorporate connectors that can be used to capture digital video from a camcorder. Some editing of the resulting DVD is usually possible, such as adding chapter points.
Some digital video recorders can now record to solid state flash memory cards (called flash camcorders). They generally use Secure Digital cards, can include wireless connections (Bluetooth and Wi-Fi), and can play SWF files. There are some digital video recorders that combine video and graphics in real time to the flash card, called DTE or "direct to edit". These are used to speed-up the editing workflow in video and television production, since linear videotapes do not then need to be transferred to the edit workstation (see Non-linear editing system).
DVRs can usually record and play H.264, MPEG-4 Part 2, MPEG-2 .mpg, MPEG-2 .TS, VOB and ISO images video, with MP3 and AC3 audio tracks. They can also display images (JPEG and PNG) and play music files (MP3 and Ogg).
Some devices can be updated to play and record in new formats. DVRs usually record in proprietary file systems for copy protection, although some can use FAT file systems. Recordings from standard-definition television usually have 480p/i/576p/i while HDTV is usually in 720p/1080i.
Digital video recorders configured for physical security applications record video signals from closed-circuit television cameras for detection and documentation purposes. Many are designed to record audio as well. DVRs have evolved into devices that are feature rich and provide services that exceed the simple recording of video images that was previously done through VCRs. A DVR CCTV system provides a multitude of advanced functions over VCR technology including video searches by event, time, date and camera. There is also much more control over quality and frame rate allowing disk space usage to be optimized and the DVR can also be set to overwrite the oldest security footage should the disk become full. In some DVR security systems remote access to security footage using a PC can also be achieved by connecting the DVR to a LAN network or the Internet. Some of the latest professional digital video recorders include video analytics firmware, to enable functionality such as 'virtual tripwire' or even the detection of abandoned objects on the scene.
Security DVRs may be categorized as being either PC-based or embedded. A PC-based DVR's architecture is a classical personal computer with video capture cards designed to capture video images. An embedded type DVR is specifically designed as a digital video recorder with its operating system and application software contained in firmware or read-only memory.
Hardware features of security DVRs vary between manufacturers and may include but are not necessarily limited to:
Software features vary between manufacturers and may include but are not necessarily limited to:
Some (very few), but certainly not all, digital video recorders which are designed to send information to a service provider over a telephone line or Internet (or any other way) can gather and send real-time data on users' viewing habits.
Digital video recorders are also changing the way television programs advertise products. Watching pre-recorded programs allows users to fast-forward through commercials, and some technology allows users to remove commercials entirely. Half of viewers in the United States, for example, use DVRs to skip commercials entirely. This feature has been controversial for the last decade, with major television networks and movie studios claiming it violates copyright and should be banned.
In 1985, an employee of Honeywell's Physical Sciences Center, David Rafner, first described a drive-based DVR designed for home TV recording, time-slipping, and commercial skipping. U.S. Patent 4,972,396 focused on a multi-channel design to allow simultaneous independent recording and playback. Broadly anticipating future DVR developments, it describes possible applications such as streaming compression, editing, captioning, multi-channel security monitoring, military sensor platforms, and remotely piloted vehicles.
The first DVR which had a built-in commercial skipping feature introduced in 1999 by ReplayTV at the Consumer Electronics Show in Las Vegas. In 2002, five owners of the ReplayTV DVR sued the main television networks and movie studios, asking the federal judge to uphold consumers' rights to record TV shows and skip commercials, claiming that features such as commercial skipping help parents protect their kids from excessive consumerism. ReplayTV was purchased by SONICblue in 2001 and on March 2003, SONICblue filed for Chapter 11 bankruptcy after fighting a copyright infringement suit over the ReplayTV's ability to skip commercials. In 2007, DirecTV purchased the remaining assets of ReplayTV. A third-party add-on for Windows Media Center called "DVRMSToolbox" has the ability to skip commercials. There is a command-line program called Comskip that detects commercials in an MPEG-2 file and saves their positions to a text file. This file can then be fed to a program like MEncoder to actually remove the commercials.
Many speculate that television advertisements will be eliminated altogether, replaced by advertising in the TV shows themselves. For example, Extreme Makeover: Home Edition advertises Sears, Kenmore, Kohler, and Home Depot by specifically using products from these companies, and some sports events like the Sprint Cup of NASCAR are named after sponsors.
Another type of advertisement shown more and more, mostly for advertising TV shows on the same channel, is where the ad overlays the bottom of the TV screen, blocking out some of the picture. "Banners", or "logo bugs", as they are called, are referred to by media companies as Secondary Events (2E). This is done in much the same way as severe weather warnings are done. Sometimes, these take up only 5–10% of the screen, but in the extreme, can take up as much as 25% of the viewing area. Some even make noise or move across the screen. One example of this is the 2E ads for Three Moons Over Milford in the months before its premiere. A video taking up approximately 25% of the bottom-left portion of the screen would show a comet impacting into the moon with an accompanying explosion, during another television program.
Because of this widely used new technology, advertisers are now looking at a new way to market their products on television. An excerpt from the magazine Advertising Age reads: "As advertisers lose the ability to invade the home, and consumer's minds, they will be forced to wait for an invitation. This means that they have to learn what kinds of advertising content customers will actually be willing to seek out and receive."
With ad skipping and the time-sensitive nature of certain ads, advertisers are wary of buying commercial time on shows that are heavily digitally video-recorded. However, technology today makes it possible for networks to insert ads dynamically on videos being played in DVRs. Advertisers could inject time-relevant ads to recorded programs when the program is viewed. This way the ads could be not just topical but also personalized to viewers interests. DirecTV in March 2011 signed an arrangement with NDS Group to enable the delivery of such addressable advertisement. It is believed that viewers prefer to forward ads, than to switch the channel. By switching channels, viewers will have the probability of skipping the beginning of their program. Users might switch to a channel that is also showing ads. Having the ability to pause, rewind, and forward live TV gives users a chance to change the channel fewer times. Forwarding ads can have a later effect on the viewer. Ads that get the viewers' attention will influence the viewers' to rewind and watch what was missed.
In January 2012, Dish Network announced Hopper service, costing $10 extra per month, which recorded prime-time programming from the four major broadcast networks. With the Auto Hop feature, viewers can watch the programs they choose without commercials, without making the effort to fast-forward. On May 24, 2012, Dish and the networks filed suit in federal court.
On July 14, 2005, Forgent Networks filed suit against various companies alleging infringement on U.S. Patent 6,285,746, entitled "Computer controlled video system allowing playback during recording". The listed companies included EchoStar, DirecTV, Charter Communications, Cox Communications, Comcast, Time Warner, and Cable One.
Scientific-Atlanta and Motorola, the manufacturers of the equipment sold by the above-mentioned companies, filed a counter-suit against Forgent Networks claiming that their products do not violate the patent, and that the patent is invalid. The two cases were combined into case 6:06-cv-208, filed in the United States District Court for the Eastern District of Texas, Tyler Division.
According to court documents, on June 20, 2006, Motorola requested that the United States Patent and Trademarks Office reexamine the patent, which was first filed in 1991, but has been amended several times.
On March 23, 2007, Cablevision Systems Corp lost a legal battle against several Hollywood studios and television networks to introduce a network-based digital video recorder service to its subscribers. However, on August 4, 2008, Cablevision won its appeal. John M. Walker Jr., a Second Circuit judge, declared that the technology "would not directly infringe" on the media companies' rights. An appeal to the Supreme Court was rejected.
In court, the media companies argued that network digital video recorders were tantamount to video-on-demand, and that they should receive license fees for the recording. Cablevision and the appeals court disagreed. The company noted that each user would record programs on his or her own individual server space, making it a DVR that has a "very long cord."
In 2004, TiVo sued EchoStar Corp, a manufacturer of DVR units, for patent infringement. The parties reached a settlement in 2011 wherein EchoStar pays a one-time fee (in three structured payments) that grants Echostar full rights for life to the disputed TiVo patents upon first payment(as opposed to indefinite and escalating license fees to be constantly renegotiated), and Echostar granted TiVo full rights for life to certain Echostar patents and dropped their counter-suit against TiVo.
In January 2012, AT&T settled a similar suit brought by TiVo claiming patent infringement (just as with Echostar) in exchange for cash payments to TiVo totaling $215 million through June 2018 plus "incremental recurring per subscriber monthly license fees" to TiVo through July 2018, but grants no full lifetime rights as per the Echostar settlement.
In May 2012, Fox Broadcasting sued Dish Network, arguing that Dish's set-top box with DVR function, which allowed the users to automatically record prime-time programs and skip commercials, was copyright infringement and breach of contract. In July 2013, the 9th circuit rejected Fox's claims.
Beyond TV is digital video recorder/media center software for Microsoft Windows produced by the American company SnapStream. The software was originally released in 2000 as a Personal Video Station. Like most media center software, and devices such as TiVo and Sky+, Beyond TV has a 10-foot user interface design for the living-room TV. Allowing you to watch, pause and record live TV, as well as schedule recording. It also allows you to search for a show in its electronic program guide, enabling the user to find out when shows are on without having to search through the listings themselves.
Some of the more powerful and unique functions that Beyond TV offers are SmartSkip, the ability to automatically detect scene changes, including commercials, and then quickly jump between them. ShowSqueeze, the option to compress your TV recordings to other formats and profiles. Beyond TV can also be used in a server - client configuration, that allows one computer to host your media and TV tuning capabilities, allowing other computers which are connected to the device via a network to stream this information. These additional computers could also be connected to TVs for more comfortable viewing.
Beyond TV 4.5 offers an optional DVD burning plug-in, which allows you to burn directly from the application to DVD. DVD burning is only supported for mpeg2 recorded shows.
Beyond TV 4.9.0 now enables placeshifting through its web admin interface. Placeshifting is a technology that allows users with broadband internet connection to stream video from their T.V set or personal video recorder forwarded, enabling them to watch anywhere on a computer display device.Beyond TV 4 was featured in PCWorld.ca's guide to turning your PC into a PVRRecently, Snapstream officially acknowledged that Beyond TV was, in fact, discontinued. While support would remain for the time being, it was no longer available for purchase, nor would it see any further development due to Snapstream's corporate shift of direction. The last update was in 2010.Cartoon Network, LP v. CSC Holdings, Inc.
Cartoon Network, LP v. CSC Holdings, Inc., 536 F.3d 121 (2d Cir. 2008), was a United States Court of Appeals for the Second Circuit decision regarding copyright infringement in the context of digital video recorders. Among other reasons, it is notable for disagreeing with the Ninth Circuit's holding in MAI Systems Corp. v. Peak Computer, Inc., regarding whether a momentary data stream is a "copy."
In the case, Cablevision, a cable television provider, sought to create a hosted DVR (Digital Video Recorder) service. A consortium of copyright holders in the television and film industries sued for direct copyright infringement on the grounds of unlawful copying and public performance. The appeals court found that a) the automated copying of content at user request did not constitute direct infringement, b) Time shifting, or replaying content to the original audience, did not constitute public performance, and c) the copying of streaming content for the purposes of buffering did not itself constitute unlawful copying.Ericsson Mediaroom
Mediaroom is a collection of software for operators to deliver IPTV (IPTV) subscription services, including content-protected, live, digital video recorder, video on demand, multiscreen, and applications. These services can be delivered via a range of devices inside and outside customers' homes, including wired and Wi-Fi set top boxes, PCs, tablets, smartphones and other connected devices – over both the operator's managed IP networks as well as "over the top" (OTT) or unmanaged networks.
According to a marketing firm, Mediaroom was the market leader in IPTV for 2014.GB-PVR
GB-PVR was a PVR (personal video recorder) application, running on Microsoft Windows, whose main function was scheduling TV recordings and playing back live TV. GB-PVR is no longer under active development and has been superseded by NextPVR, also known as nPVR.GB-PVR also acts as a home media center software with a digital video recorder, a radio station online tuner, a music and movie player, a library of images and other features.
Although GB-PVR supports open interfaces, the core engine code is closed. However developing personal plug-ins is an option to extend the application and these can be closed or open source, depending on the developer's interests. These plug-ins can be developed in C#, VB.NET or C++ and some examples are available in the GB-PVR official Forums and the GB-PVR Documentation wiki websites. The softwarewas developed with an interface which allows user to change the skin view or other graphic elements as the wallpaper.
GB-PVR is mostly an MPEG recording and playback system, but may also play other non-MPG content such as AVI (DivX/Xvid), WMV, and other formats that are supported by the codecs installed into a computer's.
It requires a supported TV tuner card, a VMR9 capable display adapter (video card), and a supported MPEG2 Decoder. Other requirements are listed on the GB-PVR web site.GuideWorks
GuideWorks, LLC is the joint venture of Comcast and Gemstar-TV Guide International that was formed in April 2004 for the purpose of creating navigation software (also known as Interactive Program Guides) for digital cable television. Comcast owns a majority stake in the venture.
The software developed by GuideWorks is widely deployed in Comcast digital cable systems throughout the USA, and delivers both Video On Demand and Digital Video Recorder features to consumers. Gemstar TV Guide markets the GuideWorks software to other cable companies.
Prior to the formation of the joint venture, Gemstar-TV Guide International, Inc developed and marketed the navigation software to Comcast and other cable operators. During this period, the name i-Guide became associated with the products, which gained a reputation for strong promotion of advertising similar to the ads that appear on web pages today. This advertising aspect underwent significant deemphasis after the formation of the GuideWorks joint venture in 2004.
In 2010, Rovi, the corporate descendant of Gemstar-TV Guide, pulled out of the venture. GuideWorks is now wholly owned by Comcast.Guide Plus
Guide Plus+ (in Europe), TV Guide On Screen, TV Guide Daily and Guide Plus+ Gold (in North America) or G-Guide (in Japan) are brand names for an interactive electronic program guide (EPG) system that is used in consumer electronics products, such as television sets, DVD recorders, personal video recorders, and other digital television devices. It offers interactive on-screen program listings that enable viewers to navigate, sort, select and schedule television programming for viewing and recording. The differing names are only used for marketing purposes – the entire system is owned by Rovi Corporation, the successor to Gemstar-TV Guide International. In 2016, Rovi acquired digital video recorder maker TiVo Inc., and renamed itself TiVo Corporation.
In late 2012, Rovi issued a notice to its North American users through the Guide Plus+, TV Guide On Screen and 'Rovi Guide' message system that broadcast transmission of the service would cease beginning in November 2012, and be discontinued gradually through April 2013.The service will be discontinued in Europe by the end of 2016.MythTV
MythTV is a free and open-source home entertainment application with a simplified "10-foot user interface" design for the living room TV. It turns a computer with the necessary hardware into a network streaming digital video recorder, a digital multimedia home entertainment system, or home theater personal computer. It can be considered a free and open-source alternative to TiVo or Windows Media Center. It runs on various operating systems, primarily Linux, macOS, and FreeBSD.Network DVR
Network DVR (NDVR), or network personal video recorder (NPVR), or remote storage digital video recorder (RS-DVR) is a network-based digital video recorder (DVR) stored at the provider's central location rather than at the consumer's private home. Traditionally, media content was stored in a subscriber's set-top box hard drive, but with NDVR the service provider owns a large number of servers, on which the subscribers' media content is stored. The term RS-DVR is used by Cablevision for their version of this technology.PSX
PSX may refer to:
Pakistan Stock Exchange, the stock exchange of Pakistan
PSX (digital video recorder), a PlayStation 2-based digital video recorder
PlayStation (console), commonly abbreviated as "PS", "PS1" or "PSX"
PlayStation Experience, annual event for the video game industry, commonly abbreviated as "PSX" by the media
The POSIX emulation subsystem on various DEC and IBM operating systems
Adobe Photoshop Express, an online version of Adobe Photoshop
Phillips 66, with PSX as its NYSE stock symbolPSX (digital video recorder)
The PSX is a Sony digital video recorder with a fully integrated PlayStation 2 video game console. It was released in Japan on December 13, 2003. Since it was designed to be a general-purpose consumer video device, it was marketed by the main Sony Corporation instead of Sony Computer Entertainment and does not carry the usual PlayStation branding. Its high cost resulted in poor sales, meaning that the PSX was never released outside Japan, making it a commercial failure.PlayTV
PlayTV is a HDTV/DVR add-on unit for the PlayStation 3 (PS3) video game console. It allows the PS3 to act as an HDTV or DTV receiver as well as a digital video recorder (DVR) for recording television programmes to the hard drive for later viewing. The application will only start up with the DVB-T adaptor connected.ReplayTV
ReplayTV was a brand of digital video recorder (DVR), a term synonymous with personal video recorder (PVR). It is a consumer video device which allows users to capture television programming to internal hard disk storage for later viewing (and time shifting). The first ReplayTV model was introduced in January 1999 during the Consumer Electronics Show in Las Vegas, at the same time as a competing DVR model from rival company TiVo. After the sale of assets to DirecTV, ReplayTV's only ongoing activity was maintenance of the electronic program guide service by D&M Holdings, which was to be discontinued on July 31, 2011. However, on July 29, 2011, a notice was placed on the ReplayTV website stating that service would be continued without interruption for lifetime subscribers and monthly subscribers may have a short interruption in service. On September 2, 2011, programming contact through the ReplayTV dialup system was terminated without any update message being sent to subscribers or posted on replaytv.com. DNNA filed for bankruptcy on July 20, 2015. EPG data from their servers ran out on July 15, 2015. Even with the end of support from DNNA, third party solutions are available to provide Electronic Program Guide data to Replays.ShowShifter
ShowShifter, now obsolete, was a proprietary, commercial digital video recorder (DVR) and home theater PC (HTPC) software for Windows.
ShowShifter offered features such as TV recording, PVR facilities, EPG, audio and video Jukebox, and a picture viewer from within a user interface designed to be used by a remote control at a comfortable viewing distance from the video display, hence the term 10-foot user interface.Slingbox
The Slingbox is a TV streaming media device made by Sling Media that encodes local video for transmission over the Internet to a remote device (sometimes called placeshifting). It allows users to remotely view and control their cable, satellite, or digital video recorder (DVR) system at home from a remote Internet-connected PC, smartphone, or tablet as if he or she were at home.
Customers have also connected their Slingboxes to other video sources, including Blu-ray players and security cameras.TV tuner card
A TV tuner card is a kind of television tuner that allows television signals to be received by a computer. Most TV tuners also function as video capture cards, allowing them to record television programs onto a hard disk much like the digital video recorder (DVR) does.
The interfaces for TV tuner cards are most commonly either PCI bus expansion card or the newer PCI Express (PCIe) bus for many modern cards, but PCMCIA, ExpressCard, or USB devices also exist. In addition, some video cards double as TV tuners, notably the ATI All-In-Wonder series. The card contains a tuner and an analog-to-digital converter (collectively known as the analog front end) along with demodulation and interface logic. Some lower-end cards lack an onboard processor and, like a Winmodem, rely on the system's CPU for demodulation.TiVo
TiVo ( TEE-voh) is a digital video recorder (DVR) developed and marketed by TiVo Corporation and introduced in 1999. TiVo provides an on-screen guide of scheduled broadcast programming television programs, whose features include "Season Pass" schedules which record every new episode of a series, and "WishList" searches which allow the user to find and record shows that match their interests by title, actor, director, category, or keyword. TiVo also provides a range of features when the TiVo DVR is connected to a home network, including film and television show downloads, advanced search, personal photo viewing, music offerings, and online scheduling.
Since its launch in its home market of America, TiVo has also been made available in Australia, Canada, Mexico, New Zealand, Puerto Rico, Sweden, Taiwan, Spain, and the United Kingdom. Newer models, however, have adopted the CableCARD standard, which is only deployed in the United States, and which limits the availability of certain features.Time shifting
In broadcasting, time shifting is the recording of programming to a storage medium to be viewed or listened to after the live broadcasting. Typically, this refers to TV programming but can also refer to radio shows via podcasts.
In recent years, the advent of the digital video recorder (DVR) has made time shifting easier, by using an electronic program guide (EPG) and recording shows onto a hard disk. Some DVRs have other possible time shifting methods, such as being able to start watching the recorded show from the beginning even if the recording is not yet complete. In the past, time shifting was done with a video cassette recorder (VCR) and its timer function, in which the VCR tunes into the appropriate station and records the show onto video tape.
Certain broadcasters transmit timeshifted versions of their channels, usually one hour in the future, to enable those without recording abilities to resolve conflicts and those with recording abilities more flexibility in scheduling conflicting recordings. (See timeshift channel.)Video Disk Recorder
The Video Disk Recorder (VDR) is an open-source application for Linux designed to allow any computer to function as a digital video recorder, in order to record and replay TV programming using the computer's hard drive. The computer needs to be equipped with a digital TV tuner card. VDR can also operate as an mp3 player and DVD player using available plugins. VDR uses drivers from the LinuxTV project. VDR was originally written by Klaus-Peter Schmidinger, one of the founders of CadSoft Computer GmbH and original developer of the EAGLE electronic design application. The software was originally hosted on CadSoft's server.ZAP (satellite television)
ZAP is a digital satellite television provider mainly for Portuguese-speaking countries in sub-Saharan Africa. ZAP launched in Angola in 2010, providing a subscription based TV service covering the sub-Saharan countries to south of Angola. ZAP operates from the Eutelsat W7 satellite, placed over Africa at 36,0 degrees East, broadcasting in DVB-S2 in five Ku band transponders with MPEG-4 compression and Nagravision encryption.ZAP provides an unprecedented number of Portuguese-language channels for a region where Portuguese-speaking African countries account for more than 40 million people.In order to subscribe to ZAP's television service a subscriber can use either one of the two available decoders. The "HD+" decodes the encrypted signal, provides an electronic programming guide, high definition image and 5.1 stereo sound. The "HD+DVR" decoder provides the additional functionality of digital video recorder.