HOME ENTERTAINMENT SYSTEM AND METHOD OF ITS OPERATION

Abstract: An EPG database for a home entertainment system includes files that contain information about television programs retrievable by time and channel. The files are linked to each other so information about a future television program can be obtained by accessing a file about a current television program. A current television program displayed on the screen (20) of a home entertainment system includes an announcement or advertisement (56) of a future television program. The availability of an electronic program guide function (54) is signaled during, before, or after the announcement. A command is issued to invoke the EPG function (54). The information about the future television program is retrieved from the file about the current television program in the database. The EPG function (54) is executed with the retrieved information. The EPG function can be performed with respect to a future television program without embedding information about the future television program in the television signal.

Description: HOME ENTERTAINMENT SYSTEM AND METHOD OF ITS OPERATION CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority of provisional application Serial No. 60/072,396, filed on January 23, 1998, the disclosure of which is incorporated fully herein by reference. The disclosures of the following patent applications are also incorporated fully herein by reference: published International Application WO96/07270 published March 7, 1996; U.S. Application No. 60/053,330 filed July 21, 1997; U.S. Application No. 60/061,119 filed October 6, 1997; U.S. Application No. 60/055,237 filed August 12, 1997, and U.S. Application No. 09/120,488 filed July 21, 1998. BACKGROUND OF THE INVENTION This invention relates to a home entertainment system and a method for its operation and, more particularly, to facilitation of electronic program guide (EPG) functions with respect to the promotion of future television programs in a home entertainment system. United States Patent No. 4,977,455 which issued on December 11, 1990 discloses a system and process for supplying supplemental information after a user responds to a cue . The cue is provided during a broadcast to indicate the availability of the supplemental information relating to the broadcast. The supplemental information is preferably sent at a later time, although schedule information for the supplemental information is sent with the broadcast. After the user responds to the cue, the schedule information is first stored and is then used to record the supplemental information. In one embodiment, supplemental data is sent in the NBI of the video signal. SUMMARY OF THE INVENTION According to one aspect of the invention, a current television program displayed on the screen of a home entertainment system includes an announcement or advertisement of a future television program. The availability of an electronic program guide function is signaled during, before, or after the announcement. A command is issued to invoke the EPG function. An EPG database for the home entertainment system includes files that contain information about television programs retrievable by time and channel. The files are linked to each other so information about a future television program can be obtained by accessing a file about a current television program. The information about the future television program is retrieved from the file about the current television program in the database. The EPG function is executed with the retrieved information. As a result, an EPG function can be performed with respect to -1- a future television program without embedding information about the future television program in the television signal. The invention can be used to perform various EPG functions, including, without limitation, record, watch, details, display time, display channel, display by theme, and Internet connection. According to an optional feature of the invention, a menu of choices is displayed in response to a command after display of an icon signaling the availability of an EPG function during, before or after the announcement. According to another optional feature of the invention, a plurality of icons are displayed on the screen to signal different EPG functions, which can be invoked by selecting the corresponding icon. BRIEF DESCRIPTION OF THE DRAWINGS The features of specific embodiments of the best mode contemplated of carrying out the invention are illustrated in the drawings, in which: FIG. 1 is a schematic block diagram of a home entertainment system incorporating principals of the invention; FIG. 2 is a diagram of a display screen illustrating an icon that signals the availability of an EPG function with respect to a future television program; FIG. 3 is a diagram of a display screen prompting a viewer to select from among a number of EPG functions; FIG. 4 is a diagram of a display screen prompting a viewer to select among choices for the frequency that a television program is to be recorded; FIG. 5 is a diagram of a display screen illustrating the simultaneous display of a current television program and textual data from an Internet web site; FIG. 6 is a diagram of a display screen illustrating an embodiment in which one or more announcements are stored for later use; and FIG. 7 is a diagram of a display screen in which separate icons are used to signal the availability of different EPG functions. DETAILED DESCRIPTION OF SPECIFIC EMBODIMENTS In a specific embodiment of the invention, an icon is displayed on a television screen during a telecast of an announcement or advertisement of a later telecast program or some other type of visual or audio signal alerts the viewer that an electronic program guide (EPG) -2- function can be performed without actually entering the EPG or at least not entering the EPG from the beginning. For example, if the viewer wants to record on a NCR the program being advertised, the viewer issues an appropriate command from a remote controller, e.g., clicks on the icon with the select or enter key of the remote, and the time and channel of the advertised program are stored in the recording stack memory of the VCR. Preferably, a message is displayed momentarily in a box on the screen to confirm that the function will be performed. If desired a query could also be displayed whether the program should be displayed once or on more occasions, e.g., daily or weekly. Or, for example, if the viewer wants to see more details about the advertised program, the viewer clicks on the icon and the details are retrieved from the RAM in which the EPG data is stored and either replace the advertisement on the screen or are displayed in an on-screen box. Alternatively, the advertisement could be displayed in a PIP window in accordance with the referenced PCT application. Or, for example, if the viewer wishes to see what other programs are being telecast at the same time, on the same channel, or with the same theme as the advertised program, the viewer clicks on the icon and the EPG is displayed for the same day and time, the same channel, or the same theme as the advertised program. If more than one function is available to the viewer, the choice of functions is first displayed in a menu when the viewer clicks on the icon and the function is executed when the viewer thereafter clicks on one of the displayed choices. A home entertainment system is shown in FIG. 1. A source of television signals 10 such as a terrestrial antenna, or a cable is connected to a television tuner 11. The output of tuner 11 is a modulated intermediate frequency signal containing video and audio television information. Tuner 11 is connected by an intermediate frequency amplifier (IF AMP) 12 to a picture detector (PICTURE DET) 13 and a sound detector (SOUND DET) 14, which produce base band video and audio signals, respectively. The audio signal is coupled by a sound amplifier (SOUND AMP) 15 to a loudspeaker 16. The video signal is coupled by a video amplifier not shown to one input of a switch 18. Sound detector 14 and picture detector 13 are connected to the audio and video inputs, respectively, of a video cassette recorder (VCR) 17. (Alternatively, television signal source 10 could be directly connected to the RF input of NCR 17 in well known fashion, if its internal tuner and demodulating circuitry are to be utilized.) The output of NCR 17 is connected to the other input of switch 18. The output of switch 18 is connected to one input of a conventional picture-in-picture (PIP) integrated circuit chip 19. The output of PIP chip 19 is -3- connected to the video input of a television receiver or display monitor (TV) 20 having a screen (not shown). An updatable data base of the schedule of program listings of all the available channels for a prescribed period of time, e.g., a day or a week, is electronically stored in a program schedule memory 22, preferably a RAM. Memory 22 is connected to a microprocessor 24 that is configured, i.e., programmed, to control the operation of the described equipment. An operating program for microprocessor 24 is stored in a read only memory (ROM) 26. These program listings typically include for each program the title, a program description (detail), the day of the week, the start time of the day, the program length, and the channel on which the program is transmitted and thus available for reception at source 10. These program listings are retrievable by time and channel. Further, to implement the invention these program listings are organized into files; the files are linked to each other so information about a future television program that is advertised in an earlier television program can be obtained by accessing a file about the earlier television program. The data base can be updated by a data transmission link in the vertical blanking interval (VBI) of a television channel broadcast to the television receiver in well known fashion. A NBI decoder 38 is connected between PICTURE DET 13 and microprocessor 24 for this purpose. Alternatively, the data base can be updated by unplugging memory 22 and replacing it with a memory having the updated data base or by another data transmission link such as an Internet connection or a pager in the 900MHz band. A viewer input device 28, preferably in the form of a remote IR controller, is coupled to microprocessor 24 to issue commands from the viewer. A video processor 30 is coupled to microprocessor 24. When the viewer wishes to see television program listings, microprocessor 24 recalls a portion of the program schedule data base from memory 22 and couples it to video processor 30, where the program listings are formatted for display. Preferably, the information stored in video processor 30 is a bit map of what is displayed on the screen of television receiver 20. Video processor 30 is connected through a switch 40 to the other input of PIP chip 19. Preferably, viewer input device 28 controls microprocessor 24 by cursor movement on the screen of television receiver 20. To this end, microprocessor 24 and video processor 30 are coupled to a cursor position register 32. (Alternatively, the viewer can select items of information displayed on the screen by keying into viewer input device 28 code numbers assigned to these items.) Microprocessor 24 is also coupled to tuner 11 for channel change, to VCR 17 for play/record selection and start/stop, to switches 18 and 40 for selection of one of their inputs, and to PIP chip 19 for selection of the mode of PIP operation. An Internet connection 42 through a telephone line or bidirectional cable is controlled by microprocessor 24. Microprocessor 24 retrieves the address of the web site to which the viewer wants to connect. Internet connection 42 has the components required for implementing Web TV. The informatioin recovered from the addressed web site is coupled from Internet connection 42 through switch 40 to the one input of PIP chip 19 for display on the screen of TV 20. In operation, tuner 11 is set to a viewer selected channel by microprocessor 24 responsive to input device 28. During a commercial break in the television program on the selected channel, an announcement or advertisement for another television program to be telecast at a later time is displayed on the screen of TV 20. Transmitted as part of the image of the advertisement is an icon that signals to the viewer that it is possible to link to an EPG function. Alternatively, the icon could be transmitted in the VBI during the advertisement, recovered by VBI decoder 38, transformed into graphic form in video processor 30, and overlayed on the image of the advertisement. (If desired the icon could be displayed immediately before or immediately after the advertisement.) The advertisement designated 50 and an icon 52 are illustrated in FIG. 2. When the viewer issues a command from input device 28, by either pushing a dedicated key or positioning a cursor over icon 52 with arrow keys and clicking an all purpose actuator (enter) key, a box 54 is overlayed over advertisement 50 as illustrated in FIG. 3 to prompt the viewer to invoke an EPG function. A menu of EPG functions is displayed in box 54, namely: 1. record the advertised program when it is telecast at a later time; 2. turn the television on to watch the advertised program when it is telecast at a later time; 3. display details of the advertised program now; 4. display a listing of programs telecast at the same time as the advertised program so the viewer can compare the advertised program with other offerings at the same time; 5. display a listing of programs telecast on the same channel as the advertised program so the viewer can compare the advertised program with other offerings on the same channel; 6. display a listing of programs in the same category or theme as the advertised program so the viewer can determine the availability of programs of the same genre as the advertised program; 7. connect to the Internet to obtain more details about the advertised program than are available through the details function; and 8. return to the television program. -5- The viewer selects one of the functions for example by moving a cursor to the menu item and then issuing another command to invoke the selected function. For example, the viewer could highlight "3." and click to display details about the advertised program. If the viewer wishes to extinguish box 50, the viewer selects "8", the return function. Other functions not listed in FIG. 3 could also be offered. For example, all the times the advertised program is telecast could be displayed on the screen or a news story related to the advertised program could be displayed on the screen, particularly in the case of a sporting event. With reference to the above PCT application, the EPG information about the television programs is retrievable by time and channel; for example a pre-established time list includes addresses that point to show information packages (SIP) for the television programs. Each television program that has an icon 52 includes in its SIP an address pointing to the schedule information, i.e., day, time, channel, and length, of the advertised program to be telecast at a later time, thereby linking the information of the two television programs. If the "record" or "watch" function is selected, the channel is read from tuner 11 and the time is read from a real time clock in microprocessor 24. From this information, the pointer of the SIP for the current television program is retrieved from the pre-established time list. The retrieved pointer permits microprocessor 24 to find the SIP for the current television program, which contains the address pointing to the schedule information for the advertised program. The schedule information is stored in a memory stack so microprocessor 23 can set tuner 11 to the proper channel and turn on the VCR for unattended future recording or turn on the television for automatic future watching at the appointed time in well known fashion. The program listing files stored in memory 22 could be organized in any number of other ways so long as the information about the future programs being advertised is "linked" to a current program, i.e., can be retrieved when a current program is being displayed with an EPG function signaling icon. For example, the information about the future programs could be linked to the current programs including advertisements by being part of the same file as the current programs instead of being linked by a pointer. When the record function is selected, a box 56 is overlaid on advertisement 50 as illustrated in FIG. 4 to prompt the viewer to select a record option. A menu of record options is displayed in box 56. (These record options are also considered to be EPG functions as the term is used herein because they are functions that can normally be performed by an EPG.) The viewer can record the advertised program as follows: 1. once; 2. daily; 3. weekly; or -6- 4. each time program in a series (e.g., the NBA championship games) is telecast. The viewer selects one of the record options for example by moving a cursor to a menu item, e.g., "3." and clicking to record the advertised program weekly. As an additional feature, if the series option is selected in FIG. 4, a list of each occurrence of the episodes of the series may be displayed; when a particular episode is selected, a synopsis of the episode would then be displayed. From the synopsis the viewer could select individual episodes of the series to schedule to watch or record. The menus shown in FIGS. 3 and 4 could be stored in memory 22 along with the EPG data base and overlayed on the image of the advertisement by means of a video switch or other means not represented in FIG. 1. If the detail function is selected, the detail (program description) information is retrieved from the SIP of the future program being advertised and displayed on the screen of TV 20. If the time, channel, or theme function is selected, the channel is read from tuner 11 and the time is read from a real time clock in microprocessor 24. From this information, the pointer or pointers of the desired SIP or SIP's are retrieved from the preestablished time list. The retrieved pointer or pointers permit microprocessor 24 to find the desired SIP or SIP's, from which the program listings for the same time, channel, or theme as the advertised program are extracted and fed to video processor 30 for display on the screen of the monitor in the same manner as the data for an ordinary guide described in the referenced PCT application. Alternatively, if the time or channel function is selected, the time and channel in a grid guide (reference U.S. Application No. 09/120,488) could be displayed so the viewer can see the other programs available on the same channel or at the same time in a grid guide format. In this case, an advertised program or a program telecast at about the same time or on the same channel can be directly scheduled for recording or watching by using the scheduling capability of the guide itself. (See U . S . Patent No. 5,353,121, the disclosure of which is incorporated herein by reference.) If the Internet function is selected, the system sets up a connection to a web site where more information is available about the other television program to which the announcement or advertisement relates. The web site address (URL) could be embedded in the VBI of the television signal that carries the announcement, stored at the television receiver in the EPG data base as part of the SIP for the current television program, or retrieved from a central data base via a telephone connection. After the Internet connection is established, as illustrated in FIG. 5, the television program is displayed in a PIP window 58 with the web site information in the background 60, or vis-a- versa. Alternatively, the web site information could replace the -7- television program on the screen. In either case, the viewer can navigate about the web site in the normal fashion to find the desired information. Instead of appearing during an announcement or advertisement, icon 52 could appear during a television program itself. When the viewer issues the command in response to icon 52, a box 62 is displayed on the screen. An announcement or advertisement of the later telecast program appears in box 62. If the viewer is interested in the later telecast program, the viewer issues another command from input device 28 and box 54 (FIG. 3) is displayed as described above. Instead of an announcement or advertisement of a later telecast program, the announcement could relate to a current program on another channel. This is particularly applicable to a network that telecasts a plurality of programs concurrently on different channels, as is the case in the HDTV environment. The network can thus promote its other program offerings being telecast at the same time. The viewer can record the other program and continue to watch the program he or she had been watching. Thus, the term "future programs" in this specification is used for ease of comprehension of the inventive principles, but this term also refers to a current program on another channel. Another alternative is to store one or more announcements of a later telecast program or programs while the television set is turned off. After the television set is turned on, icon 52 is displayed on the screen to alert the viewer that there are stored announcements. As the viewer issues a command from input device 28, the announcements appear on the screen, as illustrated in FIG. 6, in succession. If the viewer is interested in the announced program, the viewer issues another command from input device 28 and box 54 (FIG. 3) is displayed as described above. Instead of a single icon 52 (FIG. 1) that invokes a menu of choices of EPG functions (FIG. 3), a plurality of icons 52a, 52b, and 52c could be displayed as shown in FIG. 7 to bypass the menu of FIG. 3. Each icon is marked with a mnemonic to enable the viewer to distinguish it from the other icons, e.g., "R" stands for "record", "W" stands for "watch", and "D" stands for "details". When the viewer selects one of the icons, e.g., by clicking on the selected icon, the corresponding EPG function is invoked directly. The described embodiments of the invention are only considered to be preferred and illustrative of the inventive concept; the scope of the invention is not to be restricted to such embodiment. Various and numerous other arrangements may be devised by one skilled in the art without departing from the spirit and scope of this invention. For example, although a visual icon is preferred, an audible signal could be given to alert the viewer to the presence of an announcement or advertisement. Further, if only the record function is available, the menu of FIG. 3 could be bypassed and the menu of FIG. 4 could be displayed directly; alternatively, if -8- only one other EPG function is available, the menu of FIG. 3 could be bypassed in favor of a prompt to confirm the EPG function or the display of some other appropriate prompting menu.

Claims: WHAT IS CLAIMED IS: 1. A method for operating a home entertainment system that includes a display screen, the method comprising the steps of: displaying on the screen a current television program that includes an announcement or advertisement of a future television program; signaling the availability of an electronic program guide (EPG)function with respect to the future television program during, before, or after the announcement; storing in memory an EPG data base including files containing information about television programs retrievable by time and channel, the files being linked to each other so information about the future television program can be obtained by accessing a file about the current television program; retrieving from the file about the current television program in the data base by time and channel the information about the future television program; and executing the EPG function with the retrieved information. 2. The method of claim 1, in which the EPG function is "record", the information about the future television program is the time, day, channel, and length, the retrieving step retrieves the time, day, channel, and length of the future television program, and the executing step schedules the future television program for unattended recording. 3. The method of claim 1, in which the EPG function is "watch", the information about the future television program is the time, day, channel, and length, the retrieving step retrieves the time, day, channel, and length of the future television program, and the executing step schedules the future television program to be displayed on the screen when telecast. 4. The method of claim 1, in which the EPG function is "details", the information about the future television program is details about the future television program, the retrieving step retrieves the details, and the executing step displays the details on the screen. 5. The method of claim 1, additionally comprising the step of issuing a viewer command to invoke the retrieving and executing steps. 6. A home entertainment system comprising: a monitor having a display screen; -10- a television receiver adapted to display on the screen a current television program that includes an announcement or advertisement of a future television program; a memory in which is stored an EPG data base including files containing information about television programs retrievable by time and channel, the files being linked to each other so information about the future television program can be obtained by accessing a file about the current television program; and a microprocessor configured to accept a viewer command to invoke an EPG function, to retrieve from the file about the current television program in the data base by time and channel the information about the future television program, and to execute the EPG function with the retrieved information. 7. The home entertainment system of claim 6, additionally comprising means for signaling the availability of an electronic program guide (EPG)function with respect to the future television program during, before, or after the announcement. 8. The home entertainment system of claim 7, in which the signaling means displays an icon on the screen. 9. The home entertainment system of claim 8, additionally comprising means for displaying on the screen a list of choices of EPG functions responsive to a viewer command after the icon is displayed and means for selecting one of the choices; the microprocessor being configured to execute the selected EPG function. 10. The home entertainment system of claim 7, in which the signaling means displays a plurality of icons on the screen, each icon representing a different EPG function. 11. The home entertainment system of claim 10, additionally comprising means for selecting one of the icons, the microprocessor being configured to execute the selected EPG function. ■11- AMENDED CLAIMS [received by the International Bureau on 7 July 1999 (07.07.99); original claims 1-11 replaced by amended claims 1-32 (4 pages)] 1. A method for operating a home entertainment system that includes a display screen, the method comprising the steps of: displaying on the screen a current television program that includes an announcement or advertisement of another television program; signaling the availability of an electronic program guide (EPG) function with respect to the other television program during, before, or alter the announcement; storing in memory an EPG data base including files containing information about television programs retrievable by time and channel, the files being linked to each other so information about the other television program can be obtained by accessing a file about the current television program; retrieving from the file about the current television program in the data base by time and channel the information about the other television program; and executing the EPG function with the retrieved information. 2. The method of claim 1, in which the EPG function is "record", the information about the other television program is the time, day, channel, and length, the retrieving step retrieves the time, day, channel, and length of the other television program, and the executing step schedules the other television program for unattended recording. 3. The method of claim 1, in which the EPG function is "watch", the information about the other television program is the time, day, channel, and length, the retrieving step retrieves the time, day, channel, and length of the other television program, and the executing step schedules the other television program to be displayed on the screen when telecast. 4. The method of claim 1, in which the EPG function is "details", the information about the other television program is details about the other television program, the retrieving step retrieves the details, and the executing step displays the details on the screen. 5. The method of claim 1, additionally comprising the step of issuing a viewer command to invoke the retrieving and executing steps. -12- 6. A home entertainment system comprising: a monitor having a display screen; a television receiver adapted to display on the screen a current television program that includes an announcement or advertisement of another television program; a memory in which is stored an EPG data base including files containing information about television programs retrievable by time and channel, the files being linked to each other so information about the other television program can be obtained by accessing a flle about the current television program; and a microprocessor configured to accept a viewer command to invoke an EPG function, to retrieve from the file about the current television program in the data base by time and channel the information about the other television program, and to execute the EPG function with the retrieved information. 7. The home entertainment system of claim 6, additionally comprising a signal of the availability of an electronic program guide (EPG) function with respect to the other television program during, before, or after the announcement. 8. The home entertainment system of claim 7, in which the signal displays an icon on the screen. 9. The home entertainment system of claim 8, additionally comprising a screen display of a list of choices of EPG functions responsive to a viewer command after the icon is displayed and an EPG function choice selector; the microprocessor being configured to execute the selected EPG function. 10. The home entertainment system of claim 7, in which the signal displays a plurality of icons on the screen, each icon representing a different EPG function. 11. The home entertainment system of claim 10, additionally comprising a selector of one of the icons, the microprocessor being configured to execute the selected EPG function. 12. The method of claim 1 , in which the other television program is concurrent with the current program. 13. The method of claim 1 , in which the other television program is a future program. -13- 14. The method of claim 1 additionally comprising providing a network that concurrently broadcasts a plurality of programs on different channels, respectively, including the current and other television program. 15. The method of claim 1 additionally comprising concurrently recording the other program and watching the current program. 16. The method of claim 5, in which the step of issuing a viewer command comprises selecting one of a plurality of icons appearing in an announcement, an advertisement, or a television program, each icon representing a different EPG function. 17. The method of claim 5, in which the step of issuing a viewer command comprises responding to an icon appearing in an announcement, an advertisement, or a television program. 18. The method of claim 17, in which the step of issuing a viewer command additionally comprises displaying an announcement or an advertisement. 19. The method of claim 18, in which the step of issuing a viewer command additionally comprises responding to the announcement or advertisement display to invoke the retrieving and executing steps. 20. The method of claim 1 additionally comprising storing a program announcement while the television is turned off. 21. The method of claim 20 additionally comprising turning the television on and displaying an icon to alert the viewer of the existence of the stored announcement. 22. The method of claim 21 additionally comprising issuing a viewer command to view and display the stored announcement 23. The method of claim 22, in which there is more than one stored announcement and the stored announcements are viewed in succession. 24. The method of claim 22 additionally comprising responding to the display of the stored announcement to invoke the retrieving and executing steps. -14- 25. The home entertainment system of claim 6, in which the other television program is concurrent with the current program. S 26. The home entertainment system of claim 6, in which the other television program is a future program. 27. The home entertainment system of claim 6 additionally comprising a network that 10 concurrently broadcasts a plurality of programs on different channels, respectively, the network broadcasts the current program and the other program. 28. The home entertainment system of claim 6, in which the current program is watched while the other program is recording. 15 29. The home entertainment system of claim 6 additionally comprising a memory in which is stored a program announcement while the television is turned off. 30. The home entertainment system of claim 29 additionally comprising an alert icon 20 activated when the television is turned on, the alert icon signals the availability of an electronic program guide (EPG) function with respect to the other television program. 31. The home entertainment system of claim 30 additionally comprising a screen display of a list of choices of EPG functions responsive to a viewer command in response to the 25 alert icon, and an EPG function choice selector; the microprocessor being configured to execute the selected EPG function. 32. The home entertainment system of claim 31 , in which there is more than one stored announcement and the stored announcements are viewed in succession. 30 35 -15-

Inventors: SCHOAFF P CHRISTOPHER, SHALKEY ERIC, WARD THOMAS EDWARD III, YUEN HENRY C, SCHOAFF, P., CHRISTOPHER, SHALKEY, ERIC, WARD, THOMAS, EDWARD, III, YUEN, HENRY, C.
Applicants: GUIDE E INC, SCHOAFF P CHRISTOPHER, SHALKEY ERIC, WARD THOMAS EDWARD III, YUEN HENRY C, E GUIDE, INC., SCHOAFF, P., CHRISTOPHER, SHALKEY, ERIC, WARD, THOMAS, EDWARD, III, YUEN, HENRY, C.
Application year: 1999
Main classification: H04N5
IPC codes: H04N5, H04N7