Computer convergence device controller for managing disparate video sources

Information

  • Patent Grant
  • 6441861
  • Patent Number
    6,441,861
  • Date Filed
    Monday, May 7, 2001
    23 years ago
  • Date Issued
    Tuesday, August 27, 2002
    22 years ago
Abstract
A computer convergence system includes a convergence functionality module, a computer, and a display device. The convergence functionality module includes a first input for receiving a first video signal and a second input for receiving a second video signal. The computer is coupled to the convergence functionality module and receives therefrom indications of the first video signal received at the first input port and indications of said second video signal received at the second input port. The computer includes a controller for controlling the mapping of the indications of the first video signal to the primary video viewing surface, and further controls the mapping of the indications of the second video signal to either the second video viewing surface or the data acquisition destination.
Description




STATEMENTS REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT




None




REFERENCE TO A MICROFICHE APPENDIX




None




BACKGROUND OF THE INVENTION




1. Field of the Invention




The present invention relates to computer convergence devices, and more particularly, but not by way of limitation, to a personal computer/television (PC/TV) convergence device controller for managing the selection, arbitration, and utilization of multiple disparate video signals received from multiple video sources.




2. Description of the Related Art




A computer convergence device is a fully functional computer integrated or converged with another consumer electronic device. One such convergence device is a personal computer/television (PC/TV) convergence device, which integrates personal computer with television functionality, providing television viewing (via broadcast, cable Digital Satellite, video cassette recorder (VCR), electronic game device, or other video source) and personal computing functionality. The convergence of personal computer and television functionalities, among other things, permits combined access to television viewing and program information, computer related functionality, and Internet Access.




A PC/TV convergence device may comprise a fully functional computer including fax/modems, CD-ROM players, and media storage such as hard drives and floppy drives. The convergence with television functionalities may include utilizing multiple video inputs to receive a variety of video signals such as from cable systems, VCR, and electronic game machines. The computer is interlaced with a display monitor, often a big screen monitor, with either the interlaced video signal being converted to a scan video graphics adapter (VGA) signal or the computer's scan VGA signal being converted to an National Television Standards Committee (NTSC) interlaced signal. Because the PC/TV convergence device is controlled by the computer's operating system, the PC/TV convergence device can, among other things, simultaneously display PC applications and TV programs on a single monitor. The convergence of personal computer and television functionalities into a single device also permits the utilization of the communications bandwidth, mass storage and graphics of the computer to deliver, store and display small computer applications during a traditional television viewing environment.




In spite of many recent advances in this area, several problems remain. One major problem encountered is the need to effectively and efficiently control the complexity of the various video applications available for the possible video sources. For example, some of the available video sources include composite video sources, RF video sources, S-Video and digital versatile disk (DVD), with many of these having various video configurations and differing control characteristics.




Another problem encountered is the need to be able to arbitrate among the various selectable video sources. For example, if data is being downloaded from one video source, it may be desirable to prevent the interruption of that download to prevent data corruption.




Accordingly, based upon the foregoing, it should be appreciated that there is a need for a computer convergence control system that is capable of effectively and efficiently controlling the selection and application of disparate video signals from various video sources, including being able to arbitrate between the selection and application of the various video sources.




BRIEF SUMMARY OF THE INVENTION




The present invention overcomes the above identified problems as well as other shortcomings and deficiencies of existing technologies by providing a computer convergence system including a convergence functionality module, a computer, and a display device. The convergence functionality module includes a first input for receiving a first video signal and a second input for receiving a second video signal. The computer is coupled to the convergence functionality module and receives therefrom indications of the first video signal received at the first input port and indications of said second video signal received at the second input port. The computer includes a controller for controlling the mapping of the indications of the first video signal to the primary video viewing surface, and further controls and arbitrates the mapping of the indications of the second video signal to either a second video viewing surface or a data acquisition destination.











BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS




A more complete understanding of the present invention may be had by reference to the following Detailed Description and appended claims when taken in conjunction with the accompanying Drawings wherein:





FIG. 1

is a block diagram illustrating a computer convergence system in accordance with the principles and teachings of the present invention;





FIG. 2

is a block diagram illustrating, in more detail, an embodiment of the computer convergence system as similarly illustrated in

FIG. 1

;





FIG. 3

is a block flow diagram illustrating a preferred embodiment of an arbitration method in accordance with the principles and teachings of the present invention; and





FIG. 4

is a block flow diagram illustrating a preferred embodiment of a second arbitration method in accordance with the principles and teachings of the present invention.











DETAILED DESCRIPTION OF THE INVENTION




Computer


12


is coupled to convergence functionality module


14


that is operable to receive or generate data signals, such as video, audio, and graphic information. For example convergence functionality module


14


may comprise a receiver, decoder or tuner capable of receiving television signals in the form of the National Television Standards Committee (NTSC) or Phase Alternate Line (PAL) forms, from any medium such as from a cable system or from a digital satellite system. Convergence functionality module


14


may also include or consist of various other types of consumer electronic units. For example, convergence functionality module


14


could also include or consist of video gaming units and other direct audio/video sources such as video cassette recorders (VCRs), and video disk player/recorders, including digital versatile disk (DVD) player/recorders.




Computer convergence system


10


may preferably be operated by a user using wireless remote input


18


operating, or example, via radio waves, infra-red waves or acoustic waves. Although good results have been achieved using wireless keyboards and remote controls for remote input


18


, it is contemplated that any input device, wireless or hardwired, could be used to operate computer convergence system


10


.




Still referring to

FIG. 1

, computer convergence system


10


is configurable to be connected to and communicate with the network


20


. It is contemplated that network


20


could be any type of network, including a Local Area Network, a Wide Area Network and the Internet.




In general operation, computer convergence system


10


can be operated in various modes. For example, computer convergence system


10


can be operated in a personal computer mode and a television mode. When is television mode, personal computer


12


processes the audio and video information received or generated by convergence functionality module


14


, and outputs the corresponding information on display monitor


16


. At least two viewing displays are possible on display monitor


16


when computer convergence system


10


is being operated in television mode, a main display and a secondary display. In a preferred embodiment, the display image of the main display fills the entire screen, with only a portion of the screen dedicated to the viewing of the secondary display, such as with a picture-in picture (PIP) configuration.




When computer convergence system


10


is being operated in computer mode, computer,


12


is utilized to perform computer functions, including executing and running software and interfacing with network


20


, with the output of computer


12


being displayed on display monitor


16


.




Referring now to

FIG. 2

, there is shown a more detailed block diagram of an exemplary embodiment of computer convergence system


10


. As depicted in this exemplary embodiment, convergence functionality module


14


includes multiple video inputs


22


,


24


,


26


,


28


,


30


and


32


capable of receiving a variety of video signals from multiple video sources.




For example, inputs


22


-


32


could be configured as follows: input


22


to receive digital signals such as DVD/DSS video signals; inputs


24


and


26


to receive RF video signals such as from a cable television system; inputs


28


and


30


to receive composite video signals such as from a VCR; and input


32


an S-Video signal such as from a laser disk player. Although convergence functionality module


14


is illustrated in this exemplary embodiment to include the inputs to receive the video signals from various video sources, it is contemplated that convergence functionality module


14


could also include the actual video source such as video players, recorders, tuners, and decoders.




Still referring to

FIG. 2

, there is illustrated a more detailed block diagram of the video controls utilized by computer


12


. The video controls are used to process and select the video signals received from convergence functionality module


14


. As depicted, the video controls of computer


12


include a video center control service (VCCS)


34


, hardware abstraction interface (CTVHW)


36


, various multiplexers and analog-to-digital converters


38


, two digital video interfaces


40


and


42


, a primary video viewing surface


44


, a secondary video viewing surface


46


, a data acquisition destination


48


, video port manager (VPM)


50


and a vertical blanking interval (VBI) capture driver


52


.




VCCS


34


is the central service that provides control for video applications received from convergence functionality module


14


. All messages and commands that query or manipulate video applications are preferably processed and/or routed by VCCS


34


. Thus the functionality of the VCCS


34


includes: creating and owning the video display windows, processing all video control functions and transport controls (for example, channel up/down); handling bookkeeping of video control settings; managing the switching of the current video source; managing the external sources; initializing and configuring new external devices; and arbitrating application use.




VCCS


34


utilizes CTVHW


36


to control the selection of the video sources with multiplexers


38


, and also utilizes CTVHW


36


to control the configuration and modifications of the video source video signals as well and controls the changing of the channels. The analog-to-digital converters


38


are used to convert analog video signal to digital signals. VPM


50


, also controlled by VDDS


34


, controls the mapping of the video signal received from digital video interface


40


to the primary video viewing surface


44


, and similarly controls the mapping of the video signal received from digital video interface


42


to the secondary video viewing surface


46


.




Still referring to

FIG. 2

, VCCS


34


further controls VBI capture driver


52


. VBI capture driver


52


controls the mapping of the video signal received from digital video interface


42


to data acquisition destination


48


, where, for example, the VBI information will be downloaded. VBI includes various types of data, for example, program listing time and content, and subscriber control codes.




As described hereinabove, in this embodiment display monitor


16


can display the video image information received from primary video viewing surface


44


on the main display, and can display the video image information received form secondary video viewing surface


46


on the secondary display, such as a PIP. When a single first video input is selected images indicative of the video signal will be displayed on main display of display monitor


16


. If a second video source is selected to be displayed simultaneously with the images of the first video source, the images corresponding to the second video source will be displayed on the secondary display, such as in a PIP format. It is contemplated that other display formats for simultaneously displaying the main display and the secondary display could also be utilized.




Referring now to

FIGS. 1 and 2

, a more detailed description of the operation of the present invention will now be given. As described hereinabove, in one exemplary embodiment, computer convergence system


10


is operable in two modes, a computer mode and a television mode. Upon initialization of computer convergence system


10


in television mode, VCCS


34


, via VMP


50


, will request access to digital video interface


40


and select the primary video viewing surface


44


, and via MUX


38


, will select an RF video source (i.e. a television tuner) such as input


24


. As can be appreciated, the user has the option to change the selection of the video source for digital video interface


40


.




If access to the secondary video viewing surface


46


, such as a PIP, is requested, VCCS


34


will check on the availability of digital video interface


42


and will check to see if one of the tuners (RFI or RF


2


) is being utilized by primary video viewing surface


44


. If the determination is made that digital video interface


42


is available, and that one of the tuners is being utilized by primary video viewing surface


44


, VCCS, via VPM


50


, will select secondary video viewing surface


46


, and via CTVHW controlling multiplexer


38


, will select the available turner. Digital video interface


42


and the turner selected for secondary video viewing surface


46


will then be locked-out to additional user requests, until the user either selects a different video source or turns off the PIP.




If the determination is made that primary video viewing surface


44


is not utilizing one of the television tuners, VCCS


34


, via CTVHW


36


controlling multiplexer


38


, will select the last chosen video source for secondary video viewing surface


46


. Digital video interface


42


will then be locked-out to additional user requests, until the user turns off the PIP.




Similarly, if access to the data acquisition destination


48


, such as a VBI download, is requested, VCCS


34


will check on the availability of digital video interface


42


. If the determination is made that digital video interface


42


is available, VCCS, via VBI capture driver


52


, will select data acquisition destination


48


, and via CTVHW controlling multiplexer


38


, will select the available turner. Digital video interface


42


and the tuner selected for secondary video viewing surface


46


will then be locked-out to additional user requests, until data acquisition is complete or until the user turns cancels the request for data acquisition destination


48


.




As can be appreciated with this exemplary embodiment, as user is able to potentially select the same video source to be displayed both the main and secondary displays of display monitor


16


from signals received from the primary video viewing surface


44


and the secondary video viewing surface


46


. However, it is contemplated, that VCCS


43


could also control the selections of the video sources such as to prevent duplication of the video sources at the primary video viewing surface


44


and secondary video viewing surface


46


.




To prevent problems arising when a user requests the performance of a function utilizing digital interface


42


when it is unavailable, VCCS


34


will also performs the arbitration among any selected conflicting requests for the concurrent selection of the digital video interface


42


.




Referring now to

FIGS. 3 and 4

, there are illustrated flow diagrams of two preferred arbitration methods performed by VCCS


34


. In particular,

FIG. 3

illustrates a flow diagram of the arbitration performed when a user requests access to secondary video viewing surface


46


and for a PIP. As depicted by blocks


52


and


54


, VCCS


34


will check the availability of digital video interface


42


. If it is determined that digital video interface


42


is not available, the ‘No’ path is followed and as indicated by block


58


, the PIP request is not performed and the PIP is locked out. An example of when digital video interface


42


may be unavailable, would be when a user is utilizing digital video interface


42


for data acquisition destination


48


.




If it is determined that digital video interface


42


is available, the yes path is followed to block


56


. As depicted by block


56


, the available tuner is then selected. Then as indicated by block


60


, the tuner and the digital video interface


42


are locked out to prevent additional user requests. Then, as indicated by block


62


, the PIP image is displayed on secondary surface


50


. This will continue until the user turns off the secondary surface


50


or chooses another video source, other than RF


2


, as indicated by decision block


64


. If the PIP viewing with RF


2


, is complete, the ‘Yes’ path is followed to block


66


, where the tuner and digital video interface


42


are then made available for additional user requests.




Referring now to

FIG. 4

, there is illustrated a flow diagram of the arbitration performed when a user requests access to data acquisition destination


48


such as for a VBI download. As depicted by blocks


70


and


72


, VCCS


34


will check the availability of digital video interface


42


. If it is determined that digital video interface


42


is not available, the ‘No’ path is followed and as indicated by block


76


, access to data acquisition destination


48


is not granted and VBI is locked out. An example of when digital video interface


42


may be unavailable, would be when a user is utilizing digital video interface


42


for secondary video viewing surface


46


, such as a PIP display.




If it is determined that digital video interface


42


is available, the yes path is followed to block


74


. As depicted by block


74


, the available tuner is then selected. Then as indicated by block


78


, the tuner and the digital video interface


42


are locked out to prevent additional user requests. Then, as indicated by block


80


, the VBI information is downloaded for the video signal. As depicted by decision block


82


, the downloading will continue until all of the information has been obtained or until the user cancels the function. When VBI downloading has been completed, the ‘Yes’ path is followed to block


84


, where the tuner and digital video interface


42


are then made available for additional user requests.




Based upon the foregoing, it should be appreciated that the computer convergence system


10


provided in accordance with the principles of the present invention includes a convergence functionality module, a computer, and a display device. The convergence functionality module includes a first input for receiving a first video signal and a second input for receiving a second video signal. The computer is coupled to the convergence functionality module and receives therefrom indications of the first video signal received at the first input port and indications of said second video signal received at the second input port. The computer includes controller for controlling the mapping of the indications of the first video signal to a primary video viewing surface, and further controls the mapping of the indications of these second video signal to either the second video viewing surface or the data acquisition destination.




Although a preferred embodiment of the apparatus of the present invention has been illustrated in the accompanying Drawings and described in the foregoing Detailed Description, it will be understood that the invention is not limited to the embodiment disclosed, but is capable of numerous rearrangements, modifications and substitutions without departing from the spirit of the invention as set forth and defined by the following claims.




The foregoing disclosure and description of the preferred embodiment are illustrative and explanatory thereof, and various changes in the components, circuit elements, circuit configurations, and signal connections, as well as in the details of the illustrated circuitry and construction and method of operation may be made without departing from the spirit and scope of the invention.



Claims
  • 1. A method of arbitrating access to a viewing surface responsive to a user request, the viewing surface mapped by an interface in a computer convergence system having a plurality of disparate inputs, each of the plurality of disparate inputs for receiving a corresponding signal, the method comprising the steps of:determining if the interface is available; if the interface is unavailable, refusing the user request; and if the interface is available, accessing the viewing surface, comprising the steps of: selecting a selected input from the plurality of disparate inputs; displaying the corresponding signal of the selected input on the viewing surface mapped by the interface; making the selected input unavailable for additional user requests; and making the interface unavailable for additional user requests.
  • 2. The method of claim 1, the step of accessing the viewing surface further comprising the steps of:making the interface available for additional user requests responsive to a user action; and making the selected input available for additional user requests responsive to the user action.
  • 3. A method of arbitrating access to a data acquisition destination responsive to a user request, the data acquisition destination mapped by an interface in a computer convergence system having a plurality of disparate inputs, the method comprising the steps of:determining if the interface is available; if the interface is unavailable, refusing the user request; and if the interface is available, accessing the data acquisition destination, comprising the steps of: selecting a selected input from the plurality of disparate inputs; performing a data transfer between the selected input and the data acquisition destination mapped by the interface; making the. interface unavailable for additional user requests; and making the selected input unavailable for additional user requests.
  • 4. The method of claim 3, the step of accessing the interface further comprising:making the interface available for additional user requests responsive to a termination event; and making the selected input available for additional user requests responsive to the termination event.
  • 5. The method of claim 3, the termination event comprising:completion of the data transfer.
  • 6. The method of claim 3, the termination event comprising:a user cancellation request.
  • 7. An arbitrator for controlling access to a viewing surface mapped by an interface in a computer convergence system having a plurality of disparate inputs, each of the plurality of disparate inputs for receiving a corresponding signal, comprising:means for receiving a user request to access the viewing surface; means for determining if the interface is available; means for refusing the user request if the interface is unavailable; and means for granting the user request if the interface is available, comprising: means for selecting a selected input from one of the plurality of disparate inputs; means for accessing the viewing surface; means for making the interface unavailable; and means for making the selected input unavailable.
  • 8. The arbitrator of claim 7, the means for accessing the destination comprising:means for displaying the corresponding signal of the selected input on the viewing surface.
  • 9. The arbitrator of claim 7, the means for granting the user request further comprising:means for making the interface available responsive to a termination event; and means for making the selected input available responsive to the termination event.
  • 10. The arbitrator of claim 9, the termination event comprising:a user action.
  • 11. An arbitrator for controlling access to a data acquisition destination mapped by an interface in a computer convergence system having a plurality of disparate inputs, each of the plurality of disparate inputs for receiving a corresponding signal, comprising:means for receiving a user request to access the data acquisition destination; means for determining if the interface is available; means for refusing the user request if the interface is unavailable; and means for granting the user request if the interface is available, comprising: means for selecting a selected input from one of the plurality of disparate inputs; means for accessing the data acquisition destination; means for making the interface unavailable; and means for making the selected input unavailable.
  • 12. The arbitrator of claim 11, the means for accessing the data acquisition destination comprising:means for performing a data transfer of data in the corresponding signal of the selected input between the selected input and the data acquisition destination.
  • 13. The arbitrator of claim 11, the means for granting the user request further comprising:means for making the interface available responsive to a termination event; and means for making the selected input available responsive to the termination event.
  • 14. The arbitrator of claim 13, the termination event comprising:a user cancellation action.
  • 15. The arbitrator of claim 10, the termination event comprising:completion of the data transfer.
  • 16. An arbitrator for controlling access to a viewing surface mapped by an interface in a computer convergence system having a plurality of disparate inputs, each of the plurality of disparate inputs for receiving a corresponding signal, logic within the arbitrator, when executed, performing the steps of:receiving a user request to access the viewing surface; determining if the interface is available; refusing the user request if the interface is unavailable; and granting the user request if the interface is available, comprising the steps of: selecting a selected input from one of the plurality of disparate inputs; accessing the viewing surface; making the interface unavailable; and making the selected input unavailable.
  • 17. The arbitrator of claim 16, the step of accessing the viewing surface comprising:displaying the corresponding signal of the selected input on the viewing surface.
  • 18. The arbitrator of claim 16, the step of granting the user request further comprising the steps of:making the interface available responsive to a termination event; and making the selected input available responsive to the termination event.
  • 19. The arbitrator of claim 18, the termination event comprising:a user action.
  • 20. An arbitrator for controlling access to a data acquisition destination mapped by an interface in a computer convergence system having a plurality of disparate inputs, each of the plurality of disparate inputs for receiving a corresponding signal, logic within the arbitrator, when executed, performing the steps of:receiving a user request to access the data acquisition destination; determining if the interface is available; refusing the user request if the interface is unavailable; and granting the user request if the interface is available, comprising the steps of: selecting a selected input from one of the plurality of disparate inputs; accessing the data acquisition destination; making the interface unavailable; and making the selected input unavailable.
  • 21. The arbitrator of claim 20, the step of accessing the data acquisition destination comprising:performing a data transfer of data in the corresponding signal of the selected input between the selected input and the data acquisition destination.
  • 22. The arbitrator of claim 20, the step of granting the user request further comprising the steps of:making the interface available responsive to a termination event; and making the selected input available responsive to the termination event.
  • 23. The arbitrator of claim 22 the termination event comprising:a user cancellation action.
  • 24. The arbitrator of claim 22, the termination event comprising:completion of the data transfer.
  • 25. A computer convergence system having a plurality of inputs, each of the plurality of inputs having a corresponding signal, and a viewing surface mapped by an interface, the computer convergence system comprising:a processor; and an arbitrator coupled to the processor and the plurality of inputs and the interface, the arbitrator adapted to receive a user request to connect a selected input of the plurality of inputs to the viewing surface, logic within the arbitrator, when executed, performing the steps of: receiving the user request; determining if the interface is available; refusing the user request if the interface is unavailable; and granting the user request if the interface is available, comprising the steps of: connecting the selected input to the viewing surface via the interface; making the interface unavailable; and making the selected input unavailable.
  • 26. The computer convergence system of claim 25, the step of connecting the selected input to the viewing surface comprising:displaying the corresponding signal of the selected input on the viewing surface.
  • 27. The computer convergence system of claim 25, the step of granting the user request further comprising:making the interface available responsive to a termination event; and making the selected input available responsive to the termination event.
  • 28. The computer convergence system of claim 27, the termination event comprising:a user action.
  • 29. A computer convergence system having a plurality of inputs, each of the plurality of inputs having a corresponding signal, and a data acquisition destination mapped by an interface, the computer convergence system comprising:a processor; and an arbitrator coupled to the processor and the plurality of inputs and the interface, the arbitrator adapted to receive a user request to connect a selected input of the plurality. of inputs to the data acquisition destination, logic within the arbitrator, when executed, performing the steps of: receiving the user request; determining if the interface is available; refusing the user request if the interface is unavailable; and granting the user request if the interface is available, comprising the steps of: connecting the selected input to the data acquisition destination via the interface; making the interface unavailable; and making the selected input unavailable.
  • 30. The computer convergence system of claim 29, the step of connecting the selected input to the destination comprising:a logic block for performing a data transfer of data in the corresponding signal of the selected input between the selected input and the data acquisition destination.
  • 31. The computer convergence system of claim 29, the logic block for granting the user request further comprising:a logic block for making the interface available responsive to a termination event; and a logic block for making the selected input available responsive to the termination event.
  • 32. The computer convergence system of claim 31, the termination event comprising:a user cancellation action.
  • 33. The computer convergence system of claim 31, the termination event comprising:completion of the data transfer.
CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a divisional of U.S. application Ser. No. 08/834,543, filed Mar. 31, 1997, U.S. Pat. No. 6,229,575 which is incorporated herein in its entirety.

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