Abstract:
A Java television receiver ( 10 ) includes a Java television platform ( 12 ) that has a bidirectional Internet connection ( 14 ) capable of sending Internet data to the Java television platform ( 12 ) and transmitting data from the Java television platform ( 12 ) to an Internet provider. Additionally, a tuner/decoder ( 24 ) connected to the Java television platform ( 12 ) is provided which can receive, tune and decode television signals. An audio/video overlay ( 32 ) connected to the Java television platform is provided to combine displays from the Java television platform ( 12 ) and television signals from the tuner/decoder ( 24 ). Finally, a video output ( 36 ) and an audio output ( 38 ) sends the combined Internet data and television signals to a television ( 40 ).

Description:
This application claims the benefit of provisional application No. 60/034,481 filed Jan. 3, 1997. 
    
    
     TECHNICAL FIELD OF THE INVENTION 
     This invention relates to the field of television viewing and Internet usage and more specifically to an apparatus for the integration of television signals and information from an information service provider. 
     BACKGROUND OF THE INVENTION 
     Television viewing is something of a national past time. The vast majority of this nation spend many hours in front of the television watching the latest offerings from the major networks as well as a plethora of cable channels. These programs can be a source of news, they can be educational, or they can be a source of escapist fun. Unfortunately, due to the passive nature of television, the viewer is left to sit and stare at the television without being able to interact with the program being viewed. 
     The Internet and especially the part of the Internet known as the world wide web has seen tremendous growth in recent years. An outgrowth of ARPANET, a network founded in 1971 to allow defense researchers to share information, several million computers now comprise what is known as the Internet. Surf the web has become a type of battle cry for the computer savvy generation of today. For many of these computerphiles, accessing the world wide web has replaced television as a favorite diversion. The Internet, and in particularly the world wide web, offers the advantage of being more interactive. Web pages offer a hypertext environment such that a user can jump from one subject to the next, exploring and learning information at his or her own pace. The major broadcast and cable networks are not unaware to this medium and have launched Internet sites to enhance their television coverage. For example, during the past election the major networks not only had live broadcast coverage but also had additional information available on their web site. The draw back to this approach is that when a typical user is on the web, he or she is not watching television and therefore can not experience both mediums at the same time. Also, while the Internet provides a more interactive environment, it can&#39;t compete with the video capabilities of television. 
     SUMMARY OF THE INVENTION 
     From the foregoing, it may be appreciated that a need has arisen for an apparatus that integrates television signals and information from an information service provider so that both can be accessed simultaneously. In accordance with the present invention, an apparatus for the integration of television signals and information from an information service provider is provided which substantially eliminates or reduces disadvantages and problems associated with prior television and Internet access means. 
     In accordance with one embodiment of the present invention an apparatus is disclosed for the integration of television signals and information from an information service provider. The apparatus includes a television platform that has a bidirectional connection capable of sending information to the television platform and transmitting data from the television platform to an information service provider. Additionally, a tuner/decoder system connected to the television platform is provided which can receive, tune and decode television signals. An audio/video overlay system connected to the television platform is provided to combine displays from the television platform and television signals from the tuner/decoder system. Finally, a video/audio output sends the combined information and television signals to a television monitor. 
     The present invention provides various technical advantages over conventional television viewing and conventional Internet accessing. For example, one technical advantage is to provide an apparatus for the integration of television signals and Internet data that allows simultaneous viewing of television and access to the Internet. Another technical advantage is the ability to correspond television channels with specific Internet sites and even specific programs with specific Internet sites. Other technical advantages are readily apparent to one skilled in the art from the following figures, description, and claims. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     For a more complete understanding of the present invention and the advantages thereof, reference is now made to the following description taken in conjunction with the accompanying drawings, wherein like reference numerals represent like parts, in which: 
     FIG. 1 illustrates a Java television receiver; 
     FIG. 2 illustrates Java TV Software/Hardware levels for the Java television receiver; and 
     FIG. 3 illustrates a television displaying an Internet web page and a television broadcast. 
    
    
     DESCRIPTION OF THE INVENTION 
     FIG. 1 illustrates a Java Television Receiver (JTVR)  10  including a Java television platform (JTVP)  12 . JTVP  12  connects to an Internet service provider via a bidirectional Internet connection  14 . This can be a conventional phone connection, an ISDN line, a T-1 line, coaxial cable, satellite transceiver, or any other means for connecting to the Internet. A Video Cassette Recorder (VCR) control line  16  connects JTVP  12  to a VCR controller  18  which in turn connects to a VCR  20 . A tuner control line  22  connects JTVP  12  to a tuner/decoder  24  which receives an input from a cable television (CATV) source  26 . Of course the source can be from a traditional cable television system, a direct broadcast satellite system (DBS), a regular satellite broadcast system, a traditional broadcast system, or any other ways of providing television to the home. This would include a television signal reproduced by VCR  20  or a laser disk player. 
     A vertical blanking interface (VBI) datacast decoder  28  receives a signal input from tuner/decoder  24  and provides outputs to JTVP  12 . Attached to JTVP  12  is an audio/video overlay  32 . An output from tuner/decoder  24  feeds the television signal to audio/video overlay  32  via television line  34 . The output of audio/video overlay  32  is fed to a video output  36  and an audio output  38 . Video output  36  can be a super video output or a regular video output with RCA jack cable support. Audio output  38  can support mono, stereo and surround sound. Video output  36  and audio output  38  connect to a television  40 . Also included is a remote control unit  42 . Remote control unit  42  may be an infrared mouse and keyboard unit. A remote signal is received by an infrared input connection  44  of JTVR  10 . 
     All of the above components, except for television  40 , VCR  20 , and remote control unit  42  form JTVR  10 . This unit can be assembled as a set top box, manufactured internal to a television, or provided as part of a computer which attaches to television  40 . 
     In operation, tuner/decoder  24  receives a television signal and decodes the signal, if necessary. Multiple tuner/decoder  24  can be used to provide picture in a picture display. From the television signal, a specific television channel signal is chosen by the viewer, corresponding to the channel the viewer wishes to watch. The television channel signal is then output to audio/video overlay  32  and VBI decoder  28 . VBI decoder  28  removes any information from the vertical blanking interval, such as closed-captioning information or Teletext text. The vertical blanking interval information is sent to JTVP  12 . 
     JTVP  12  also receives channel information from tuner/decoder  24 . JTVP  12  contains channel map information. The channel map information associates a given television channel signal with a uniform resource locator (URL) for that particular television channel. The channel map information could also associate a particular television channel with any other way of specifying a location on an information service provider. For example, if a viewer tunes to the Cable News Network (CNN), the channel map information can associate that channel with the URL of CNN&#39;s web site: http://www.cnn.com. With this information, via Internet connection  14 , JTVP  12  can retrieve that specific web page from the Internet. Audio/video overlay  24  then will combine the web page, any VBI information and the television channel signal and output this combination to television  40 . Typically the combination will result in the regular television broadcast in a first box and the Internet display in a second box. The first and second boxes can be sized and moved around the screen. More sophisticated overlays are also possible. Additionally, information concerning the URL or other Internet information can be sent by the television channel signal in the vertical blanking interval. That information can be decoded by VBI decoder  28  and sent to JTVP  12  where JTVP  12  can then access that URL via Internet connection  14 . 
     FIG. 2 illustrates Java TV Software/Hardware levels that would be located in JTVP  12 . At the bottom level are television hardware  50 . These would include things such as audio and video output as well as channel tuners. The next level are existing interactive TV protocols  52  including Digital Audio/Video Interactive Decoder (DAVID) and Interactive Communications Applications Protocol (ICAP). Layered on top is the basic Java Operating System  58  with Java run time along with any applicable Java extensions. The inclusion of the Java run time facilitates the running of Java applications and Java applets. 
     The Java Television Toolkit (JTT)  60  is the next level. The toolkit can be thought of as an extension to the Java run time which allows it to perform the applications of JTVP  12  (i.e. integrating the Internet data with the TV broadcast). JTT  60  includes a channel model which are a set of software objects related to television channels and how the channel audio, video, and data are incorporated into the run time environment. The channel model comprises: a ChannelMap which provides an association between the channel properties, including those between the channel number and the associated URL; a ChannelLineup which is an electronic program guide for a channel; a ChannelDataStream which handles the data stream transmitted on the vertical blanking interface; and a ChannelObserver which updates the system based on content change. For example, if a show switches to a commercial break, a new web page related to the product being advertised can be displayed on the screen. This can provide additional product information or an opportunity to order the product. 
     A part of the Java channel model is the JTVP  12  packages. Each package contains classes, or commands, which are an extension to the basic Java Application Programing Interface (API). These include javatv.control which contains classes to support the integration of television signals and Internet data as well as control television channel and volume selection; javatv.channel which contains classes for supporting channel maps, channel lineups, and channel observers; and, javatv.epg which contains classes for manipulating an electronic program guide. 
     The final level is the Java Applications  62  and Applets  64 . Java is a computing platform that is capable of sitting on top of other computing platforms, such as Microsoft Windows or OS/2. A program written in the Java language can then be run on any computer where the Java platform is present, no matter what the underlying platform is. In the context of the Internet and the world wide web, as long as the program being used to access the web contains the Java platform it can run applets or applications written in Java, no matter what type of computer or the underlying operating system. In other words, one program written in Java should be capable of running on any computer in the world. Since many different users access the Internet using a variety of computers with a multitude of operating system, the rapid growth of Java is not surprising. Applets are programs that require a Java compatible web browser, such as Netscape&#39;s Navigator or Sun&#39;s HotJava, to run. A Java application is a stand alone program that will run on any computer platform that contains the Java operating system or a sufficient subset of the operating system (Java run time). In the context of the present invention, the Java applications and applets would be designed to integrate Internet data and the television signals and would be based on the commands of the existing Java API and the extensions in the Java television toolkit  60 . One such application is JavaVision, a top level user interface for the interactive television environment. In other words, it is akin to a browser. It provides for split screens of television signals and Internet data as well as graphical overlays. It also can provide support for electronic program guides as well as personalized program guides (where a user inputs his preferences and the program compiles a list of television programs that fit that interests). It can also facilitate in the programing of VCR  20 . 
     FIG. 3 illustrates a television  40  displaying an Internet web page  70  and a television broadcast  72 . In this example the Internet web page  70  is shown as occupying the bottom of the screen and the television broadcast  72  as occupying the top portion. Of course, any other arrangement of split screens or frames is possible as well as overlaying the information. 
     In operation, a user would select a station using an infrared remote control. This would trigger the JTVP  12  channel map to send a URL to the Internet provider in order to request a specific web page. Alternatively, information stored in the vertical blanking interval would send a URL to the JTVP  12  and the web page would be retrieved. As an example, consider a viewer watching an episode of a nature program about lions on the Discovery Channel. When the viewer tunes to the Discovery Channel, the web site for the Discovery Channel would appear along with the episode of the nature program. Presumably the web page would have information concerning the nature program, a discussion concerning lions or other mammals as well as connections to other related web sites. As the user views the episode of the nature program, he or she could access this information, thus enhancing the viewing of a show. If the Discovery Channel web page supported a chat room, the viewer could discuss the program with other viewers as he or she viewed the program. During a commercial break, information regarding the advertised product can be retrieved from that products web site and displayed along with the product. On return to the regular program, a return to the Discovery Channel web page can be made. 
     Thus, it is apparent that there has been provided, in accordance with the present invention, an apparatus for the integration of television signals and Internet data that satisfies the advantages set forth above. Although the present invention has been described in detail, it should be understood that various changes, substitutions, and alterations can be made herein. For example, though the present invention has been discussed in terms of Java applications and Internet providers, the present invention may equally apply to other platform independent languages and other types of information service providers. Other examples may be readily ascertainable by one skilled in the art and can be made herein without departing from the spirit and scope of the present invention as defined by the following claims.