DE19833053A1 - Transmission, reception and display of combined video data for hyperlink data file - Google Patents

Abstract

The method involves transmitting a video stream, and formatting supplemental data files in HTML, each supplemental data file having instructions for rendering a hyperlink overlay on the video stream. The supplemental data files are then transmitted along with the video stream, and timing specifications to indicate times for displaying the hyperlink overlays. Video stream and accompanying supplemental files are received and the hyperlink overlays are displayed in conjunction with the video stream, by launching an HTML compatible browser.

Description

The invention relates to methods and systems for providing and Display of additional data content together with transmitted image and Sound data (video and audio).

The display of moving images on a personal computer (PC) is becoming more common. A number of inexpensive video capture cards enable the display of analog video signals on the RGB Display surface of a personal computer. Beyond that soon higher quality digital video feeds on PCs possible be the z. B. via satellites for direct reception (DBS; Direct Broadcast satellite). With the rich Hardware, the PCs can use DES signals, analog cable signals  and radio signals as well as analog and digital video signals that are local (e.g. on a CD or in a video recorder), display and decode.

In the future there will be a television signal decoder circuit for both Analog and digital signals on all PCs of outstanding quality Importance, if not the norm. If the PC does it Allows users or viewers to work with data and video at the same time working, viewing and using them improves the PC the experience of the user or viewer towards the Experiences that you can have with a normal television.

In this new broadcasting environment, TV channels will be able to want to take advantage of the possibilities of PCs by making digital improvements plans for their programs. A transmitter can e.g. B. during a broadcast of a sports broadcast additional statistics want to provide so that a viewer detailed information about a particular team or player. Similarly, a broadcaster can provide relevant information about the topic provide a documentary broadcast so that the viewer either for more detailed information during or after the broadcast can access. Another example is the desire during a Program advertising for the program To make goods like for dolls or other toys during an animated series for children.

This method of delivering data to a PC is in such Areas of the world particularly attractive where there are traditionally none good infrastructure for data there. It is e.g. B. considered India, of its population the middle class about 300 million men includes (more than the entire population of the United States): during some can afford a PC and many have a PC, have little experience with the internet or high speed ity data networks because the infrastructure of telecommunications is underdeveloped. The possibility of delivery of data services Most places like this open up numerous possibilities.  

Over the past few years, some efforts have also been under taken to develop something called "interactive television" referred to as. Interactive television allows a viewer with a cable television service provider (service provider) to in engage. For interactive television systems, you can be different present improved features. For the audience e.g. B. Interactive program booklets can be realized. With an inter An active program can be viewed by a viewer using cursor control keys a list of television programs on a remote control "leaf through" (e.g. by scrolling). A viewer can therefore search the program content interactively. Some inter active television systems offer the possibility that transmitters to Provide additional data together with the video feed.

Interactive television systems have so far not been widely accepted found. An obstacle to broader acceptance is that each system uses different standards and protocols to store data to provide what additional data to the main video content are. Unless a single system as institutional norm is sender, the transmitter additional data in many different Formats must be provided. This represents a significant handicap represents.

The invention overcomes this hindrance by using conventional ones Formats used to add data along with video broadcasts to provide, as well as a method for superimposing the digital Data content on the primary video stream.

The invention allows video transmitters, additional data content as Prepare HTML files. The HTML files are as one glare or overlay with backgrounds prepares who have a given color key, so that one can view them with video devices with color key functions. The HTML overlays are displayed on the receiver using the usual Internet browser technology in the same display area reproduced as the broadcast video, with a color lock  selection is used. This will make the background of the Fade-in transparent: the video image only appears in the rear Background areas of the HTML overlays or overlays.

The invention is based on the preferred embodiment shapes explained with reference to the drawings. In the Figures shows:

Fig. 1 is a block diagram of a video transmission system according to the invention;

Fig. 2 shows a block diagram of an exemplary receiver according to the invention;

Fig. 3 shows how video, HTML overlays and picture windows are configured according to the invention;

FIGS. 4 and 5 are flow charts showing the preferred process steps according to the invention.

Fig. 1 shows a video transmission system according to an embodiment of the invention, generally designated by the reference numeral 10. The transmission system 10 comprises a transmission source 12 and a plurality of receivers 14 . The transmission source in this embodiment of the invention is a digital satellite system that transmits video content on multiple RF frequencies or channels. Alternatively, the transmission source can be a traditional terrestrial television station and an associated antenna, a cable system or an analog device for transmitting video data streams or video streams, and accompanying data in analog or digital form.

In most cases, the source 12 supports only one-way transmissions (unidirectional), and it is mainly used for unidirectional broadcasts (broadcasting) or multiple broadcasts (multicasting) to many receivers at the same time without the receivers knowing this in advance. The transmission source 12 can alternatively also support bidirectional transmissions. Although only one broadcast source 12 is shown for purposes of illustration, the broadcast system may include multiple broadcast sources.

The transmission source 12 has a device for transmitting or otherwise transmitting a primary video stream and an additional digital data content to receivers 14 . In the case of digital satellite transmission, the additional data can be easily transmitted in digital form together with the video and audio data streams. Protocols, such as MPEG-2, already provide for the incorporation of additional digital data into packages which are downloaded together with the digital audio / video content using the satellite transmission devices. Existing DSS systems contain e.g. B. "Notes" in MPEG data streams in order to provide ten ratios for the correct display by the receiver. Another example is in the analog field, where Philips sells a device called "Ghost Echo Cancellation Reference Signals". By introducing a known digital current onto a single analog VBI television line, more sophisticated televisions or personal computers can more easily recognize when a multipath (ghost) signal is received and take measures to fix the picture. There are approximately 800 television stations in the United States that use this signal.

When more traditional broadcast sources are used, like analog ones RF television broadcasts, data in the vertical blanking can vallen of the television signal are transmitted. This procedure will used today for encrypted subtitles for the hearing impaired (Closed caption). Digital data this way have been transferred to various industries known types are extracted from a television signal - the Most TVs manufactured today can be encrypted Extract and display subtitle information. For this purpose there are also external decoders for the encrypted subtitles. In addition, there are a number of external institutions that ver encrypted subtitle data and extract it via a serial Send cables to personal computers or other devices. In the recent past, it has also become possible to encrypt decode rare subtitle data directly within a PC,  if newer video and video voting cards are used it enable a television signal to be displayed on a PC.

There are other mechanisms by which digital content can be sent to receiver 14 . It is Z. B. possible to use a modem or other common network connection for digital data transmission. Network connections like this are independent of the traditional video transmission media and have the advantage that they allow bidirectional data transmission between the transmission source and the receivers. Transmission devices such as the Internet can also be used. Cable television networks can also offer similar transmission options. In addition, the latest plans for digital terrestrial high-definition television define channels that can transmit any number of digital images (videos) or data at 19.3 megabits / second.

It should be noted that the audio / video stream and the digital Data content distributed using different media can be. While it can be cheap, only one Medium to use like broadcasting (through the air) it would also be possible to use a physi medium like a CD-ROM while the video is being transferred traditional broadcasting technology is delivered. Alternatively, in in some cases, both the image and the data with a single physical, transportable medium such as a CD-ROM be spread.

In the preferred embodiment of the invention, transmit source 12 sends an analog or digital video stream and provides additional digital data files to accompany the video stream. These data files have digital content that can be retrieved by the receivers 14 in addition to the video stream. The broadcast source 12 also provides time specifications along with the additional data files, which times for displaying the digital content in relation to the video stream.

The digital content is preferably in a standardized, commonly used graphical markup language (a Instruction set for setting up the format and the like electronic document). In the preferred embodiment of the Invention are the additional data files in a current Version of a hypertext markup language (HTNL; Hypertext Markup Language) prepared and formatted. This allows the broadcasters to use common, generally accepted editing tools, such as those responsible for content writing on the Internet / World Wide Web be used.

The additional digital data content preferably comprises one or several hyperlink overlays. Each hyperlink overlay ent holds one or more hyperlinks. A hyperlink is a display ter area or a displayed item by a viewer can be selected or activated. Every hyperlink has a goal that specifies any other content (usually in one Data file is stored), which is played back to the viewer can be. When a hyperlink is activated, it becomes its destination recovered and reproduced. If the target z. B. a text document is, the document is displayed. If the target is one Is a file that contains a digitized audio clip Sound clip played. The most common use of hyperlinks consists of moving from one document or object to another "surfing".

For those who are familiar with internet technology, is it is obvious that the hyperlink inserts described above are similar to documents (often referred to as "web pages" which can be viewed when looking through the World Wide Web of the Internet is browsed. This is a attractive feature of the invention because it enables broadcasters who  existing tools for developing Internet content to use to design additional digital data content.

A difference to a conventional web page is that that a hyperlink overlay according to the invention has a rear reason, which is set to a given key color is. Background areas set on the key color should be transparent. Such a background can easily are generated by using conventional development tools of Internet content, such as the web design pro Gram Front Page® from Microsoft.

In this embodiment of the invention, the receivers 14 are common personal computers (PCs) having devices that include display hardware to receive and display broadcast video streams, such as television signals and digital video broadcasts. The PC is also connected to a satellite dish 15 to receive digital satellite broadcasts, or to a regular antenna to receive analog television signals.

The display hardware includes bitmap graphics functions with for displaying static bitmap images in conjunction with conventional application programs, in addition to the video display functions. The PCs 14 further include video color encryption hardware, which may be configured to display images only in display areas set to a key color.

Alternatively, the receivers 14 may include other types of devices, such as improved television units that perform similar functions to the PCs described herein.

In one embodiment, PC 14 is a personal computer with a processor (e.g., an X86 or Pentium® microprocessor from Intel Corporation), memory, a computer monitor (e.g., VGA or SVGA), and one or more input devices ( e.g. keyboard, mouse, etc.).

The PC 14 has a digital receiver that can receive digital broadcast data in a packet format, such as MPEG encoded video and audio data. Such a digital receiver also has access means for reading additional data files received from satellite broadcasts - the receiver can receive digital data in many different forms, including software programs, program information and other additional data in the form of data files.

The PC runs with an operating system that uses multiple applications supported. The operating system is preferably a multitask Operating system that allows multiple users to run simultaneously allowed. The operating system uses a graphical description user interface in a Windows environment, which the user applications or documents in special framed areas of the Display screen called "windows". On preferred operating system is a Windows® operating system, the sold by Microsoft Corporation, such as Windows 95 or Windows NT, Windows CE or another variant of Windows®. It however, it should be noted that other operating systems, the one Provide window environment that can be used like that Macintosh operating system from Apple Computer, Inc. and the OS / 2 IBM operating system.

An embodiment of a PC that can receive broadcasts is in copending U.S. Patent Application No. 08 / 503,055 titled "Broadcast-Enabled Personal Computer" which was filed on January 29, 1996. This registration belongs Microsoft Corporation, and is referred to.

Fig. 2 shows an embodiment of the PC 14 with further details. The PC 14 has been upgraded to accommodate television broadcasts and the motherboard (not shown) with a processor 52 (e.g., an X86 or a Pentium® microprocessor from Intel Corporation and a volatile memory 54. The volatile memory 55 in combination with a non-volatile memory 55 forms the program memory 56. The non-volatile memory 55 comprises a floppy disk, hard disk, CD-ROM, or other type of computer-readable storage medium, and application programs containing instructions for performing the steps described herein are included in the storage medium.

The PC 14 includes a digital receiver 58 for broadcasts, such as a satellite dish receiver, a radio frequency receiver, a microwave receiver, or the like. The digital receiver 58 receives digital data broadcasts over a broadcast network, such as a satellite network. The receiver 58 is connected to a tuning device (tuner) 60 , which adjusts itself to the frequencies or channels of the transmission network. The tuner 60 has one or two main components: a specialized digital broadcast tuner and / or a general digital broadcast tuner. The specialized digital broadcast tuner is configured to receive digital broadcast data in a particular format, such as MPEG-encoded digital video and audio data. The general digital broadcast tuner is configured to receive data in many different forms, including software programs and other additional data.

The tuner 60 is connected to the motherboard and the data processor 52 via a multi-bit bus 62 , such as a 32-bit PCI bus (a "Peripheral Component Interconect Bus" for connecting peripheral devices). An optional encryption device 64 provides encryption services for the client, such as encryption, decryption, authentication and digital signing.

The PC 14 has a video subsystem 66 that is connected to the PCI bus 62 . Video and audio data is transmitted from tuner 60 to video subsystem 66 via PCI bus 62 . In some embodiments, the tuner hardware decodes the MPEG stream itself without the data going over the PCI bus. In such systems, the uncompressed raw YUV video is sent to the card of video subsystem 66 via a simple wired connection. However, in the embodiment shown, video subsystem 66 includes circuitry for decoding MPEG encoded or other video data formats. The video subsystem 66 also has video display drivers for driving a computer screen 68 .

The video subsystem supports many peripheral devices in addition to the screen 68 . The video subsystem 66 can e.g. B. be connected to a laser video player 70 for playing DVD (digital video discs), with a game device 72 for playing video games and with a video recorder (VCR; Video Cassette Recorder) 74 for recording programs. Video subsystem 66 may also be connected to an analog television broadcasting system 76 to receive common television signals from a cable television or RF television broadcasting system. This enables backward compatibility with analog television systems.

The video subsystem 66 also has color encryption functions that facilitate the integration of video with static bitmap graphics. When encrypted, an application program or operating system configures the video subsystem to display a video stream in a rectangular area or "viewing window" of screen 68 associated with the bitmap image placed there by the execution software. In fact, the video subsystem overwrites the normal bit map image with the video stream. However, the video subsystem is configured to overwrite only the areas of the bitmap image that are set to a predetermined color or chroma key value. The bit-by-bit mapping can thus be designed in such a way that it has "transparent" areas or areas which are set to the color key value. The video stream is only displayed in these transparent areas, so that the bit-by-bit image appears as if it lies over the video data stream.

Tseng Labs, Cirrus Logic, Brooktree, ATI and S3 are examples of Companies that produce such video subsystems.

The screen 68 is preferably a VGA or SVGA monitor, as is common with personal computers, as opposed to a standard television. In the embodiment shown, PC 14 does not convert the television-related data to the National Television System Committee (NTSC) format. The PC 14 can therefore produce television data that is of better quality when displayed on the VGA screen. Other embodiments can convert images from VGA to NTSC format for display on a common television screen, where they would have a comparatively lower graphics resolution.

The PC 14 also includes a second bus 130 , such as an Industry Standard Architecture (ISA) bus, which is connected to the motherboard and the data processor 52 . An audio card 132 is connected to the ISA bus 130 and serves as an interface to multiple sound output devices, such as conventional speakers. If desired, an amplifier can be connected between the audio card and the speakers. The audio card is also connected to the video subsystem 66 to receive decoded audio signals. The audio card 132 can be connected to a stereo system 134 so that audio data can be output to the stereo system for better sound quality and recording. Newer computer systems can alternatively support the transmission of digital audio data streams outside the PC via a universal serial bus connection or an IEEE 1394 connection to an external converter. In this case you don't need an internal sound card and you get a much better sound fidelity.

A CD-ROM (or DVD) drive 136 is connected to the ISA bus 130 . The audio output signal generated by the CD-ROM (or DVD) drive 136 is passed to the audio card 132 .

The PC 14 includes a modem 138 , such as a 14.4 or 28.8 kbps fax / data modem, which is connected to the ISA bus 130 . Modem 138 is connected to a standard telephone line and provides access to public networks, including the Internet. Modem 138 can be used to directly access and download data and additional content from an independent service provider. It can also be used to download additional data files that come from a broadcast source. In addition, the modem 138 can be used for bidirectional data transmission to / from the broadcast source or other device that provides broadcast-related services.

An input / output adapter (I / O adapter) 140 is connected to the ISA bus 130 and interfaces with numerous I / O devices, including a digital tape drive 142 , a floppy disk drive 144, and a hard drive 146 . With the I / O adapter 140 , a remote receiver 138 for receiving signals from the remote cordless keyboard 66 and a remote control handset 38 is also connected in an IR or RF format. Alternatively, the keyboard and hand control device can be wired directly to the computer. I / O adapter 140 also provides common serial ports, including a COM1 150 port, a COM2 152 port, and an LPT1 154 port. An IR sneder (not shown) can be coupled to port COM1 150 and generate infrared signals to control electronic devices such as stereos, video recorders and the like. The computer 60 can also be connected directly to these components.

According to the invention, the PC 14 is programmed or configured in such a way that it receives a digital video stream and accompanying HTML files from a transmission source and displays the video stream in connection with the hyperlink overlays which are defined by the HTML files.

Fig. 3 shows how this is achieved. A popup window 200 opens to display a hyperlink overlay. The video subsystem 66 is configured to display the video stream in a viewing aperture 201 , the size and position of which matches the popup window 200 . The video subsystem is also configured to display the video stream only in the areas of the hyperlink overlay that are not set to the specified key color. Non-transparent areas of the hyperlink overlay thus shine "through" the video stream, and appear to be overlying the video stream. Perhaps the best example of this behavior is the weather forecast on TV, where the speaker appears to "float" in front of the weather map. A frame window 202 is also used to limit the edges of a pop-up window 200 and a viewing opening 201 . These three components are configured to appear to a user as a single window. The operating software is configured so that the user can move and resize the components like a single unit.

The popup window 200 is preferably realized with the control ActiveX®, which was specially designed for displaying documents in HTML format. This HTML control ActiveX® is configured to allow browsing or surfing between documents by activating hyperlinks. ActiveX® is a replaceable component standard defined by Microsoft Corporation. The setting options of Acti veX® are display units that allow a user or viewer to interact with programs via the display. In this case, the control system displays a document in HTML format, but allows the user to activate hyperlinks and finds the targets of these hyperlinks and displays them. A conventional HTML browser can alternatively be used to display the hyperlink overlays.

Instead of assigning hyperlinks to displayed pictograms, it is also possible a completely transparent image mask (if one the HTML terminology used) to generate that over the video is placed. This results in "hot spots" on the picture screen that can be clicked to trigger an action. An example of this can be the creation of a hot spot the image of an actor's body; clicking the hot point would reveal what the person is thinking. Another Example: a user could use Tim Allen's Binford saw while Click on a sequence of "Tool-Time" to get more information received, e.g. B. where to buy such a saw.

Hyperlink overlays can be provided in groups that correspond to a particular video stream, which is a surfing between the various individual overlays of the group. A related group of overlays can e.g. B. to a PC be delivered before a certain episode of a weekly TV show starts. The first of the overlays would be at the beginning the sequence, and the viewer could then watch the Hyperlinks follow to the other on-screen displays of the group see.

Alternatively, time and other information can be sent to the PC together men with data transmission packages in which the Overlays are transmitted. The time information gives in Ratio to the video stream at times when certain on glare should appear. Hyperlinks can be activated to suppress certain time constraints. An alterna tive method to synchronize the video that is not on leaves certain times in relation to the video stream is the Use of coded subtitle text (closed caption). By Examining the encoded subtitle stream can occur certain events are triggered based on the fact that the  Actors utter certain words on the screen that serve as reference marks. This technology is also in the pending US Patent Application No. 08 / 779,270 entitled "System and Method For Synchronizing Content With A Video Program Using Closed Captioning ", which was filed on January 6, 1997 has been. Reference is made to this application by Microsoft Corporation taken.

The PC 14 uses a basement-based algorithm to process multiple overlays so that one overlay can be temporarily suppressed by another. The transmission of an emergency message can e.g. B. Include overlays that overwrite a regular scheduled show. When the transmission of the emergency message is completed, the previous overlays are restored.

Fig. 4 shows preferred method steps that are carried out by the Sen dequellee 12 according to the invention. Step 220 includes sending a video data stream or video stream. The video stream can be in one of many formats, such as a traditional analog RF television format or a digital format derived from a satellite or cable transmitter.

Step 222 involves formatting additional data files in a graphical markup language, preferably HTML. Each additional HTML data file includes commands to render a hyperlink page or overlay on the video stream at a specified time. Each overlay can have transparent areas or areas that are set to a key color or chroma color. Overlays can also contain hyperlinks to other overlays or to other non-overlay documents and objects.

Step 224 includes associating the additional data files with the video stream. This step is carried out by specifying control data, such as timing parameters, together with the video stream, indicating the times for displaying the hyperlink overlays with respect to the video stream. Note that the additional files are sent before they are used, taking into account the data transfer speed.

Step 226 includes sending the additional data files along with the video stream. As already explained, this can be done using the built-in functions of the digital transmission medium or by using the vertical blanking interval of a traditional television signal.

Figure 5 shows the steps performed by the PC 14 or other receiver. Step 230 includes receiving the video stream and accompanying add-ons from the broadcast source. A step 232 includes displaying the video stream on a display device in a viewing aperture using color encryption technology so that the video stream is actually displayed only in those areas of the display that are set to a given key color or chroma color.

Step 234 includes displaying the hyperlink overlays defined by the additional data files on the display device in connection with the video stream. If the overlays were previously cached, this step involves retrieving the overlays from the cache. Control data received together with the additional data files are used in this step to link hyperlink pages or overlays with the video stream. As a result, the overlays are displayed at the times specified by the timing specifications contained in the control data and not at the time they are received.

In the standard case, the ActiveX® controller is used to display the hyperlink overlays and to enable surfing in the system with the help of the hyperlinks in the overlays. The ActiveX® controller is configured so that it occupies the same area as the viewing window for the video stream. The video stream is therefore reproduced in the transparent areas of the hyperlink overlays. In some cases, the PC 14 can actually generate or display the ActiveX® controller in advance, although this controller is only made visible at the right time. This avoids delays in the display of overlays.

Alternatively, control data can define multimedia objects that are not transparent hyperlink overlays. If this is the If so, a separate application program is started, such as an HTML-compatible browser to take advantage of an additional Da play the defined objects. Such an application The program is run in its own independent window starts, and in the case of visually aligned objects it can can be viewed along with the video stream.

As noted, the control data that is transmitted along with the additional data files indicates how the additional data files are to be processed. The control data mainly indicate the times at which the data files are to be given back or made visible. In addition, the control data specifies what should happen if a user activates a hyperlink in an overlay. Activating a hyperlink generally causes its target to be displayed or otherwise rendered. However, there are two options where the target of a hyperlink is another transparent overlay: the target can either replace the currently displayed overlay, or the target can be displayed in a new window by an independent browser that is only opened for this purpose . If the target of the hyperlink is not a transparent display, there is only one option: the target is displayed in a new window by starting a suitable application program. Step 234 thus involves launching application programs as needed to render content targeted by the hyperlinks that are not overlays.

In the PC environment described above, these steps are controlled by the data processor 52 during the execution of program instructions which are stored in the program memory 56 .

While the invention is mainly broadcast in connection with Video streams has been described, it should be noted that the video streams can also be provided by other means, such as local ones Storage (hard drives, DVD, CD, VCR, etc.). The Erfin dung also brings advantages in connection with such video sources. A film can e.g. B. on a DVD together with a group trans Parent HTML overlay files are provided together can be used with the film. Alternatively, a film be provided on a DVD, and the overlay files who downloaded from an internet source.

Note also that even with broadcast sources, the transmission of the additional data files do not coincide with the sending of the Video streams must take place. Rather, in some systems be desirable to overlay files to the user overnight send and then use it the next day. Tax data ge specify the programs with which the overlay files are linked and the software of the user's PC calls the ge suitable files at the right times depending on the selection of the user.

The invention sees one for broadcasters and other video providers fold way to additional text and graphic materials deliver and koor these materials with the content of the video dine. In contrast to systems of the prior art is useful the invention widely used program packages for writing Hypertext, which leads to acceptance and standardization is changed.  

The invention has been made in terms of structural and methodological Features described in general and in particular. One must however, understand that the invention is not intended to be specific to the written features is limited, since the disclosed here with tel preferred implementations of the invention relate. The Invention is therefore in all its forms and modifications tion with an adequate protection area through the following claims claims that, with an appropriate interpretation, also equiva lente include. The in the preceding description, the claims Chen and the features disclosed in the drawing can be both individually as well as in any combination for the realization of the Er invention in its various configurations.

Claims (46)

1. Process with the following process steps:
Sending a video stream ( 220 );
Formatting additional data files in a graphical markup language ( 222 ), each additional data file including instructions for rendering a hyperlink overlay on the video stream;
Sending the additional data file along with the video stream ( 226 ). 2. The method of claim 1, wherein the formatting ( 222 ) comprises formatting the additional data file in HTML. 3. The method according to claim 1 or 2, in which with the additional data files the times for displaying the hyperlink Specify overlays. 4. Computer-readable storage medium that a computer executable commands to perform the steps one of the preceding claims. 5. The method according to any one of claims 1 to 3, with the following further process steps:
Receiving the video stream and the accompanying additional data files ( 230 );
Displaying the hyperlink overlays in connection with the video stream ( 232 ). 6. The method of claim 5, wherein the displaying ( 232 ) comprises launching an HTML compatible browser to display the hyperlink overlays. 7. The method according to claim 5 or 6, wherein
formatting ( 222 ) includes setting transparent areas of each hyperlink overlay to a key color; and
the displaying ( 232 ) includes displaying the video stream in only the areas of the hyperlink overlays that are set to a key color. 8. The method according to claim 5 or 6, in which
formatting ( 222 ) includes setting transparent areas of the hyperlink overlay to a key self-color; and
the display ( 232 ) includes the display of the hyperlink overlay and the use of color encryption video hardware that displays the video stream only in display areas that are set to a key color. 9. The method according to any one of claims 5 to 8, in which the formatting ( 222 ) comprises the introduction of hyperlinks in the hyperlink overlay, and with a further method step in which the content targeted by such hyperlinks depending on the selection of these hyperlinks is shown. 10. The method according to claim 9, in which is currently showed hyperlink overlays to be replaced display the targeted content. 11. The method according to claim 9 or 10, wherein the new Fen open to the targeted content display. 12. The method according to claim 9, 10 or 11, in which Application programs are started to the target play content. 13. Computer-readable storage medium on which one Computer executable commands to execute the Steps one of claims 5 to 12 stored are. 14. Process with the following process steps:
Sending a video stream;
Formatting HTML files containing commands for rendering hyperlink pages, the hyperlink pages having transparent areas set to a key color;
Mapping the HTML files to the video stream;
Displaying the hyperlink pages on an advertisement;
Displaying the video stream on the display in the areas of the displayed hyperlink pages that are set to a key color. 15. The method according to claim 14, with the following further method steps:
Sending time specifications with the HTML files specifying times for displaying the hyperlink pages; in which
the hyperlink pages are displayed at the times specified by the time specifications. 16. The method according to claim 14 or 15, wherein the to show the hyperlink pages starting an HTML compatible browser. 17. The method according to any one of claims 14 to 16, which viewing the video stream using color encoding video hardware includes display the video stream only in display areas, which are set to a key color. 18. The method according to any one of claims 14 to 17, in depending on the selection of hyperlinks content are displayed to which the hyperlinks point. 19. The method according to any one of claims 14 to 18, depending on the selection of hyperlinks at the moment displayed hyperlink pages replaced by content to which the hyperlinks point. 20. The method according to any one of claims 14 to 19, in to display content on which the Hyper show on the left in the displayed hyperlink pages, new windows will be opened.   21. The method according to any one of claims 14 to 20, who starts application programs as needed to play content on which those in the Show hyperlinks to hyperlink pages. 22. Process with the following process steps:
Receiving a video stream;
Assigning one or more hyperlink pages to the video stream, the hyperlink pages having transparent areas which are set to a key color;
Displaying the hyperlink pages on an advertisement; and
Displaying the video stream on the display in the areas of the displayed hyperlink pages that are set to a key color. 23. The method of claim 22, wherein displaying the Hyperlink pages starting an HTML-compatible one Browser. 24. The method of claim 22 or 23, wherein the to show the video stream using a color ver encoding video hardware that is so configu rated is that they only display the video stream rich indicates that turned on a key color represents are. 25. The method according to any one of claims 22 to 24, in depending on the selection of hyperlinks content are displayed to which the hyperlinks point. 26. The method according to any one of claims 22 to 25, depending on the selection of hyperlinks at the moment displayed hyperlink pages replaced by content to which the hyperlinks point.   27. The method according to any one of claims 22 to 26, that for displaying content to which hyperlinks in the displayed hyperlink pages, new ones Windows are opened. 28. The method according to any one of claims 22 to 27, who starts application programs as needed to play content on which in the Hyperlink pages show hyperlinks. 29. Computer-readable storage medium, on which commands that can be executed by a computer for executing the following method steps are stored:
Receiving a video stream;
Assigning one or more hyperlink pages to the video stream, the hyperlink pages having transparent areas which are set to a key color;
Displaying the hyperlink pages on an advertisement; and
Displaying the video stream on the display in the areas of the displayed hyperlink pages that are set to a key color. 30. Computer-readable storage medium according to claim 29, which start displaying the hyperlink pages an HTML compatible browser. 31. Computer-readable storage medium according to claim 29 or 30, where displaying the video stream is used color encryption video hardware that is configured to view the video current only in display areas that indicate a Key color are set. 32. Computer-readable storage medium according to one of the An Proverbs 29 to 31 with other computer executable  Commands to display content on which Hy show perlinks, depending on the selection of these Hyperlinks. 33. Computer-readable storage medium according to one of the An Proverbs 29 to 32 with other computer executable Commands to replace the currently displayed hyper link pages through content to what hyperlinks point, depending on the selection of these hyperlinks. 34. Computer-readable storage medium according to one of the An Proverbs 29 to 33 with other computer executable Commands to open new windows to display Contents to which hyperlinks in the displayed Hy point perlink pages. 35. Computer-readable storage medium according to one of the An Proverbs 29 to 34 with other computer executable Commands to start application programs after Need to play content on the hyperlinks in the displayed hyperlink pages. 36. Video transmission system with
a broadcast source ( 12 ) that broadcasts a broadcast stream and provides accompanying additional data files, each additional data file having instructions for displaying a hyperlink overlay on the video stream;
a receiver ( 14 , 15 ) for receiving the video stream and the accompanying, additional data file for displaying the hyperlink overlays in connection with the video stream. 37. Video transmission system according to claim 36, wherein the to additional data files are formatted in HTML.   38. Video transmission system according to claim 36 or 37, wherein the transmission source ( 12 ) together with the additional data files provides time specifications that indicate times for displaying the hyperlink overlays in relation to the video stream. 39. Video transmission system according to one of claims 36 to 38 with an HTML compatible browser that the recipient ger starts to display the hyperlink overlays gene. 40. Video transmission system according to one of claims 36 to 39, where the recipient uses color encryption Hardware that video only in display areas displays that are set to a key color the hyperlink overlays are transparent Have areas that match a key color are posed. 41. Receiver ( 14 ) for receiving and displaying video stream with the following features:
display hardware for displaying video streams and bit maps to a user;
wherein the display hardware includes color encryption hardware that displays video only in display areas set to a key color;
an access device for reading additional data files containing commands for rendering bitmap hyperlinks overlays associated with the video stream at specified times; and
a data processor that reads the additional data files and, depending on them, displays hyperlink overlays at specified times, the hyperlink overlays having transparent areas that are set to a key color and thus appear to be above the video stream. 42. Receiver according to claim 41 with an HTML Kompati blen browser that the data processor displays that runs hyperlink overlays. 43. Receiver according to claim 41 or 42, wherein the Da processor is programmed so that it contains content, to which the hyperlinks in the hyperlink inserts depending on the selection of this Hy displays perlinks. 44. Receiver according to one of claims 41 to 43, at which the data processor is programmed so that it hyperlink overlays currently displayed Content replaced by a hyperlink in the momen tan displayed hyperlink overlay indicates if this hyperlink is selected. 45. Receiver according to one of claims 41 to 44, which the data processor is programmed so that it finds a new window to show content to which a particular hyperlink points if the This particular hyperlink is selected. 46. Receiver according to one of claims 41 to 45, at which the data processor is programmed so that it as needed application programs starts to content play on the hyperlinks in the hyperlink Show overlays.