Abstract:
A program distribution system includes a program transmitting device configured to transmit a program content to a remote location. A viewer terminal device is configured to receive the transmitted program content and output the content to a display. The viewer terminal device is further configured to provide a viewer with a choice of viewing the content in a first viewing setting or a second viewing setting. The first viewing setting displays one or more commercials at predetermined time intervals. The second viewing setting displays the one or more commercials at different times than the predetermined time intervals.

Description:
CROSS-REFERENCES TO RELATED APPLICATIONS  
         [0001]    The present application is related to and claims priority from Japanese Patent Application No. 2001-241595, filed on Aug. 9, 2001, which is incorporated by reference herein for all purposes.  
         BACKGROUND OF THE INVENTION  
         [0002]    The present invention relates to a method for broadcasting program contents or distributing them over a network or the like.  
           [0003]    Television and radio broadcast programs are generally supported with revenues from advertisements. While some viewer-paid channels or paid cable programs, exist, many people view free broadcasts in which commercials are displayed with programs.  
           [0004]    With conventional analog broadcasts, contents could only be broadcast and viewed one at a time. However, with digital broadcasts, commercials for different products or with different content can be provided according to viewer attributes, e.g., family-oriented/individual-oriented, age groups, and the like. However, the broadcast schedule for programs and commercials are generally fixed, and the format of inserting commercials into programs remains unchanged.  
           [0005]    Commercials are provided at fixed positions or time intervals even for paid cable programs. For example, in Japanese laid-open patent publication number Hei 9-18850, entitled “Multimedia communication system and communication device, a system is presented in which fees are reduced when a selection is made to view with commercials.  
           [0006]    Since many programs produced are not specifically tailored for insertion of commercials, their insertion during broadcast can degrade the viewing experience of the program. For example, in a sports broadcast, the game cannot be played to suit the broadcast. Thus interesting or points-scoring plays that take place during commercial breaks may be missed. For movies produced for theatrical release, the insertion of commercials can destroy the continuity or change the intended effect of the movie, e.g., dramatic tension can be lost due to a commercial break.  
           [0007]    Also, channel surfing by the viewer when a commercial is being aired can be a significant loss to for the station and the program sponsor.  
           [0008]    Therefore, it would be desirable to provide a program distribution method that distributes a television program to a viewer without reducing viewer experience due to commercials. It would also be desirable to provide a program distribution method that provide viewers with an incentive for viewing commercials, thereby increase viewing rates for commercials.  
         BRIEF SUMMARY OF THE INVENTION  
         [0009]    The present invention relates to a method for outputting programs in a program distribution system. An embodiment of the present invention includes a program transmitting device transmitting program content; a viewer terminal device receiving and outputting the transmitted program content; and a program transmission path connecting the program transmitting device and the viewer terminal device. In the viewer terminal device, an output of program content is changed after a predetermined time based on an output status of a predetermined program content during a predetermined time interval.  
           [0010]    According to another embodiment of the present invention, a method for outputting programs in a program distribution system includes a program transmitting device transmitting program content; a viewer terminal device receiving and outputting the transmitted program content; and a program transmission path connecting the program transmitting device and the viewer terminal device, wherein the method for outputting programs includes a step for transmitting a first program content from the program transmitting device; a step for recording an output status of the first program content in the viewer terminal device receiving and outputting the first program content; and a step for permitting the viewer terminal device to output a second program content if the output status satisfies a predetermined condition.  
           [0011]    According to another embodiment of the present invention, a method for outputting programs in a program distribution system includes a program transmitting device transmitting program content; a viewer terminal device receiving and outputting the transmitted program content; and a program transmission path connecting the program transmitting device and the viewer terminal device, wherein the step for outputting programs includes a step for sending a first program content from the program transmitting device, a service usage condition indicating an output status condition for the first program content that must be met to permit viewing of a second program content, and an identifier indicating the second program content to be viewed if the service usage condition is met, a step for recording in the viewer terminal device the first program content, an output status of the first program content, and a step for permitting the viewer terminal device to output the second program content indicated by the identifier when the output status meets the service usage condition.  
           [0012]    According to another embodiment of the present invention, a method for outputting programs as described above, wherein when outputting program content for which the output status is to be evaluated, associated coupon information is recorded, and output status for the program content is evaluated using the coupon information.  
           [0013]    According to another embodiment of the present invention, a method for outputting programs in a program distribution system includes a program transmitting device transmitting a program content; a viewer terminal device receiving and outputting the transmitted program content; and a program transmission path connecting the program transmitting device and the viewer terminal device, wherein the step for outputting programs includes a step for transmitting a first program content from the program transmitting device, a step for storing coupon information for a value corresponding to an output status of the first program content in the viewer terminal device, and a step for permitting output of the second program content by the viewer terminal device by subtracting a coupon information value needed to view the second program content from the stored coupon information value.  
           [0014]    According to another embodiment of the present invention, a method for outputting programs as described above wherein broadcast waves are used as the program transmission path and an output status for a predetermined channel in the viewer terminal device is used as the output status for the predetermined program content.  
           [0015]    According to another embodiment of the present invention, a method for outputting programs as described above wherein a communication line is used as the program transmission path.  
           [0016]    According to another embodiment of the present invention, a method for outputting programs as described above wherein the program content for which the output status is to be evaluated is commercial information.  
           [0017]    According to another embodiment of the present invention, a method for outputting programs as described above wherein a time interval during which the output status of the program content is recorded is formed from a plurality of non-continuous time intervals.  
           [0018]    According to another embodiment of the present invention, a method for outputting programs as described above wherein an output time for the second program content is determined according to an output size of program content for which the output status is to be evaluated.  
           [0019]    According to another embodiment, a method for outputting programs as described above wherein content for receiving viewer input is included in the program content for which the output status is to be evaluated, the information being used to evaluate the output status of the program content.  
           [0020]    According to yet another embodiment, a program distribution system includes a program transmitting device configured to transmit a program content to a remote location. A viewer terminal device is configured to receive the transmitted program content and output the content to a display. The viewer terminal device is further configured to provide a viewer with a choice of viewing the content in a first viewing setting or a second viewing setting. The first viewing setting displays one or more commercials at predetermined time intervals. The second viewing setting displays the one or more commercials at different times than the predetermined time intervals. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0021]    [0021]FIG. 1 shows a block diagram of an architecture of an on-demand program distribution system according to a first embodiment of the present invention.  
         [0022]    [0022]FIG. 2 shows a simplified drawing for the purpose of describing an example of a program distribution service according to the first embodiment of the present invention.  
         [0023]    [0023]FIG. 3 shows a flowchart of operations performed for switching program display according to the first embodiment of the present invention.  
         [0024]    [0024]FIG. 4 shows a flowchart of operations performed to record output status of commercials associated with a program service for which display switching is to be performed.  
         [0025]    [0025]FIG. 5 shows a drawing of an example of a commercial output information table structure recorded in a commercial output information storage module.  
         [0026]    [0026]FIG. 6 shows a block diagram of an architecture of a video distribution system based on broadcasting according to a second embodiment of the present invention.  
         [0027]    [0027]FIG. 7 shows a simplified drawing for the purpose of describing an example of a program distribution service according to the second embodiment of the present invention.  
         [0028]    [0028]FIG. 8 shows a drawing of an example of a screen used to confirm usage of commercial coupons.  
         [0029]    [0029]FIG. 9 shows a flowchart of operations performed to switch program display using commercial coupons.  
         [0030]    [0030]FIG. 10 shows a drawing of an example of coupon usage information sent from a program distribution server during a display switching operation.  
         [0031]    [0031]FIG. 11 shows a flowchart of an example of a flow of operations performed to obtain coupon points used in the second embodiment of the present invention.  
         [0032]    [0032]FIG. 12 a drawing of an example of commercial coupon information used in obtaining coupons. 
     
    
     DETAILED DESCRIPTION OF THE INVENTION  
       [0033]    This embodiment presents an example in which a network is used as a program distribution path. When a viewer terminal accesses a program distribution server via a network, video and audio streams are sent. The program distribution server stores and distributes program and advertisement data, and can also provide real-time distribution by using a live encoder to perform digitization. In the following example, a baseball game broadcast is being distributed live, and the viewer can be provided with a service in which commercials can be viewed all at once ahead of time so that the game can be watched without interruption. The encoded data are generally sent while they are being edited for insertion of commercials and the like. This embodiment provides a link or route for directly accessing unedited data as well as a link or route for sending commercials. When the viewer request a service, the viewer terminal automatically switches the access target to change commercial and programming displays.  
         [0034]    [0034]FIG. 1 is a block diagram showing the architecture of an on-demand program distribution system according to this embodiment of the present invention. FIG. 1 shows a program distribution server  100 , a viewer terminal  140 , and a communication network  130  that connects these elements.  
         [0035]    In the program distribution server  100 , a program management module  110  handles the video data stored in a program content storage module  102  and a commercial content storage module  104  as well as video data that has been encoded real-time by a live encoder  106 . A program distribution module  112  communicates with the viewer terminal  140  via a communication device  116  to send programs. During this process, a commercial editing module  114  inserts commercial video into the program sent when necessary. Program distribution schedules and information relating to video data management are stored in a video management information storage module  108 . This information may also be sent as additional information when necessary. Also, a user management module  120  manages user management information stored in a user management information storage module  122  and a distribution log stored in a distribution log storage module  124 . The user management information storage module  122  stores user management information relating to users receiving program distribution services. The distribution log storage module  124  stores a distribution log that records video distribution conditions.  
         [0036]    In the viewer terminal  140 , programs received by the communication device  142  are decoded by a decoder  144 . Video is output via a display  146 , and audio is output via a speaker  148 . The viewer uses an input device  150  to select programs and request services.  
         [0037]    A user management information storage module  152  stores user information used to manage the viewer terminal  140 . A commercial output information storage module  154  stores information relating to output conditions for commercials. A control device  160  controls these elements and performs processing to receive and display video.  
         [0038]    A network  130  can be a public network if services are offered to the general public, a local network such as a LAN if services are offered to a specific area, a CATV network, or the like. Also, wireless communication can be used if adequate performance can be provided.  
         [0039]    [0039]FIG. 2 is a simplified drawing for the purpose of describing an example of a program distribution service that makes use of the present embodiment.  
         [0040]    In FIG. 2, a timeline  200  and a timeline  202 , respectively, show the changes over time in program output for standard programming and for programming provided by a service based on this embodiment. A time span  210  precedes the start of transmission of the program with the service. The program with the service is distributed during a time span  212 .  
         [0041]    A time span  214  follows the end of program transmission. In the standard programming shown in the timeline  200 , commercials are broadcast in the middle of the program and output from the viewer terminal. With the service offered in the timeline  202 , on the other hand, commercials from program sponsors are transmitted all at once and output from the viewer terminal before the start of transmission of the program. Then, the uncut broadcast is displayed on the terminal on which the commercials were displayed. After the transmission of this program, programs are displayed in the standard way.  
         [0042]    [0042]FIG. 3 is a flowchart showing the operations performed by the viewer terminal  140  to switch programming display as in the timeline  202  when service usage conditions are met. FIG. 4 is a flowchart showing the operations performed by the viewer terminal  140  to record output status of commercials corresponding to the programming service for which display switching is performed. FIG. 5 shows a sample table structure for commercial output information stored in the commercial output information storage module  154  by the recording operations from FIG. 4. First, the table structure from FIG. 5 will be described.  
         [0043]    In FIG. 5, commercial output information  500  is stored in the commercial output information storage module  154 . A program ID  502 , a program name  504 , and a program schedule  506  are fields whereon various information relating to a program is stored. The program ID  502  contains information to identify a program. The program name  504  contains a program name. The program schedule  506  contains a program transmission schedule. In this embodiment, programs to be transmitted are managed using a unique program ID assigned to each program. When a program or a commercial associated with a program is transmitted, additional information including the program ID is also sent. Service usage conditions  508  stores conditions for the application of services when displaying the program. A commercial output time  510  contains the times at which commercials associated with the program are to be output.  
         [0044]    In this embodiment, programs for which the service can be applied are announced ahead of time. If the viewer makes an on-line request, commercials associated with the program are transmitted. Referring to the flowchart in FIG. 4, the operations performed by the viewer terminal  140  to record output conditions for commercials to the commercial output information storage module  154  in the form of the commercial output information  500  will be described.  
         [0045]    When the viewer requests the service, commercials associated with the program service are transmitted to the viewer terminal  140  used to make the request (step  402 ). Since the program ID and the like for the program with the service is sent as additional information, a table for the commercial output information  500  is generated and information is stored (step  404 ). In this embodiment, the program ID  502 , the program name  504 , the program schedule  506 , and the service usage conditions  508  are sent. The commercial output time  510  is initialized to 0. The current time is recorded as output start time T 0  (step  406 ), and commercials are output using the display  146  and the speaker  148 .  
         [0046]    Since there can be more than one commercial, a determination is made as to whether one commercial has finished (step  410 ). If one commercial has finished, a determination is made as to whether there is a subsequent commercial (step  412 ). If a commercial for the same program service is transmitted, control goes back to step  408  and the commercial is output. The time at which the final commercial has finished is recorded as output end time T 1  (step  414 ). T 1 −T 0  is stored as the commercial output time in the commercial output time  510  of the commercial output information  500  (step  416 ).  
         [0047]    If an event interrupts output of a commercial, the current time is immediately recorded as the output end time T 1  (step  414 ), and T 1 −T 0  is stored in the commercial output time  510  (step  416 ). In this embodiment, this can take place when a commercial is interrupted due to a loss of access to the program distribution server (step  420 ) or due to the power being turned off on the viewer terminal (step  422 ). In the operation shown in the flowchart in FIG. 4, commercials are output continuously. However, it is possible to have the output of commercials interrupted temporarily and resumed later. In such cases, it can be assumed that commercials are to be resumed if there is already commercial output information  500  with the program ID  502  identical to the ID of the requested program. The commercial output time  510  can be calculated by adding to the old value. Also, instead of calculating the output continuation time when commercials are being output, it would also be possible to record the commercial reception starting time, ending time, and times at which events, e.g., power being turned on or off, take place. Then, the commercial output time can be calculated when necessary.  
         [0048]    In one implementation, viewers are asked to provide appropriate inputs while viewing the commercials to ensure that they are in fact viewing them rather than merely leaving the display device turned on without actually watching the commercials. The inputs may be made using a remote control, key board, voice recognition device, or other types of input devices. The viewer may be required to answer a simple question or press a particular button at a given time, or the like. The input may be required at the end of each segment of the commercials, or at regular or random intervals. If a viewer does not respond with a correct input, the commercial output time (T 1 −T 0 ) may be adjusted accordingly.  
         [0049]    Next, using the flowchart in FIG. 3, the operations performed to evaluate commercial output status and change the program output method will be described. When the start time for the program for which the service was requested arrives, the commercial output information  500  is read from the commercial output information storage module  154  (step  300 ), and an evaluation is made to determine if conditions for the use of the service are met (step  302 ). In this embodiment, the condition is whether commercials associated with the service have been output from the viewer terminal  140  for at least a predetermined time. If the commercial output time  510  meets the service usage condition  508 , the service is used and the program is displayed (step  304 ). If the condition is not met, the program is displayed using the normal method (step  306 ).  
         [0050]    As shown in FIG. 2, if a program is viewed without the use of this service ( 200 ), commercials will interrupt the program. For content that continues regardless of transmission circumstances, e.g., broadcasts of baseball games, interesting scenes that may take place during commercial time may be missed. By using this service to view the program ( 202 ) and viewing commercials all at once before the start of the program ( 210 ), the program ( 212 ) can be viewed without commercial interruptions. Thus, the program can be viewed in a leisurely manner without interruptions from commercials.  
         [0051]    In this embodiment, all operations for recording commercial output status and for using services are performed by the viewer terminal  140 . However, it would also be possible to have the program distribution server  100  handle information separately and select video for each individual viewer terminal.  
         [0052]    In another embodiment, broadcasts are used as program distribution routes. Viewing credit or coupon information distributed with commercials is used to evaluate the output status. The terms “viewing credit” and “coupon” are used interchangeably. The viewer uses a program guide, remote control, or the like, to view commercials with coupons ahead of time. When a commercial is output at a predetermined time, the coupon output status is recorded in the form of coupon points. The coupon points can be added up so that the viewer can accumulate them as needed. Also, the viewer can use the accumulated points and select a program of interest out of a plurality of available programs for viewing with the service. Awarded points can be varied according to the length of the commercial output time, the time slot, and contents of the commercial. These conditions can be distributed ahead of time as part of the program guide. Alternatively, the information can be sent with each commercial. Of course, commercial coupons that can only be used for specific programs can also be issued.  
         [0053]    In the following example, a service is provided in which, for a baseball game, the broadcast time can be extended past the normal broadcast ending time by using a commercial coupon. The offset in the broadcast time for the next program resulting from the extension of the broadcast time is adjusted by cutting out broadcasts of subsequent commercials. In this embodiment, programs with the service are broadcast on a channel separate from the channels broadcasting standard programming. Programming display can be switched by automatically selecting channels on the viewer terminal based on whether or not to use the service.  
         [0054]    [0054]FIG. 6 is a block diagram of the functional architecture of a broadcast video distribution system according to the present embodiment.  
         [0055]    [0055]FIG. 6 shows a program distribution server  600  of the broadcast station, a viewer terminal device  640 , and broadcast equipment  630  for broadcasting programs from the broadcast station to the viewer. A communication network  670  connects the program distribution server  600  to the viewer terminal  640 .  
         [0056]    In the program distribution server  600 , a program management module  610  manages video data stored in a program content storage module  602  and a commercial content storage module  604  as well as video data that has been encoded real-time by a live encoder  606 . A program distribution module  612  uses a commercial editing module  614  to edit programming and commercials and generates the actual video to be broadcast. The video is sent from an output device  616  to the broadcast equipment  630 .  
         [0057]    A video management information storage module  608  stores information relating to the management of program distribution schedules and video data. When necessary, additional information is also included for information relating to commercial coupons and usage of coupons for programs.  
         [0058]    A user management module  620  manages user management information stored in a user management information storage module  622  and distribution logs stored in a distribution log storage module  624 . Also, if bi-directional services are to be provided, the user management module  620  uses a communication device  618  to communicate with each of the viewer terminals  640 . The user management information storage module  622  stores information relating to users receiving the video distribution service. The distribution log storage module  624  stores distribution logs containing video distribution conditions.  
         [0059]    In the viewer terminal  640 , programs received by a receiving device  642  are decoded by a decoder  644 . The video is output using a display  646 , and the audio is output using a speaker  648 . The viewer uses an input device  650  to select programs and request services. A user management information storage module  652  stores information used to manage the viewer terminal  640 . A coupon information storage module  654  stores information relating to coupon points stored as a result of output of commercials with coupons. A channel selector device  656  normally selects a channel indicated by the viewer via the input device  650  from the received broadcast waves and displays it on the display  646 . However, when the service of this embodiment is being used, the channel displaying the associated program is automatically selected and displayed on the display  646 . Also, a communication device  658  communicates with the program distribution server  600  via the communication network  670  if the bi-directional service is being used. A control device  660  controls all these elements and performs video receiving and displaying operations.  
         [0060]    [0060]FIG. 7 is a simplified drawing for the purpose of describing an example of a program distribution service in which this embodiment is used.  
         [0061]    In FIG. 7, a timeline  700 , a timeline  702 , and a timeline  704  are timelines indicating the changes in program output status over time for standard operations, for when the service is being used with  100  commercial coupon points, and for when the service is being used with  200  commercial coupon points, respectively. A time  710  is the program end time for the standard program display  700 . A time  712  is the program end time for the program display  702  when  100  commercial coupon points are used. A time  714  is the program end time for the program display  704  when  200  commercial coupon points are used.  
         [0062]    A time  716  is a point in time at which all three program contents become identical. In the timeline  700 , when the planned broadcast end time  710  for a program  1  is reached, the broadcast of the program  1  is ended regardless of whether there is completion in the contents of the program being broadcast. In the timeline  702 , when the planned broadcast end time  710  for the program  1  is reached, viewing time can be extended by a time corresponding to  100  commercial coupon points. Then, when the end time  712  is reached, the broadcast of the program  1  is stopped and broadcast of a subsequent program  2  is begun. The offset in the broadcast time of the program  2  caused by extending the prior broadcast is adjusted by cutting out broadcasts of subsequent commercials. In the timeline  704 , viewing can be extended to the end time  714  of the program. When the end time  714  is reached, the broadcast of the program  1  is stopped and broadcast of the program  2  is started. Here also, the offset in broadcast time for the program  2  caused by the extension of the prior broadcast is adjusted by cutting out subsequent commercials. By making these adjustments, the contents of the programs output at the time  716  can all be identical.  
         [0063]    [0063]FIG. 8 is a drawing showing a sample screen used to confirm usage of commercial coupons. In FIG. 8, a screen  800  is displayed on the display  646  of the viewer terminal  640 . The viewer looks at this screen  800  and uses the input device  650  to select a number of coupon points to be used when requesting the service.  
         [0064]    [0064]FIG. 9 is a flowchart showing the operations performed in the viewer terminal  640  when commercial coupons are used and program display switching is performed. FIG. 10 shows sample coupon usage information sent from the broadcast distribution server when this display switching operation is performed. First, the coupon usage information shown in FIG. 10 will be described.  
         [0065]    [0065]FIG. 10 shows coupon usage information  1000 . The coupon usage information  1000  includes information storage areas for a program ID  1002 , a program name  1004 , and a broadcast channel  1006 . These fields  1002 - 1006  are used to store information relating to the program for which the service is to be used. The program ID  1002  stores a program ID used to identify a program. The program name  1004  stores a program name. The broadcast channel  1006  stores a broadcast channel. In this embodiment, the time span from the start to the end of service usage is separated, and both standard program display and display of the program with the use of the service are broadcast in parallel. A field  1008  includes a point usage field  1010  and a channel  1012  displaying the corresponding program.  
         [0066]    Using the flowchart in FIG. 9 and the table in FIG. 10, the operations performed for switching program displays using commercial coupons will be described.  
         [0067]    If the service is to be provided, a coupon usage confirmation screen is displayed on the viewer terminal  640  to allow the viewer to confirm the service offered and determine whether to use coupons (step  902 ). In this embodiment, when the baseball game program ends (the time  710  in FIG. 7), the screen  800  is displayed on the display  646 . An indication of the viewers intentions via the input device  650  is awaited (step  904 ). When the viewer intention is indicated, a determination is made on whether or not to use coupons based on this (step  906 ). If coupons are to be used for the service, a predetermined number of coupon points is subtracted from the points recorded in the coupon information storage module  654  (step  908 ). The coupon usage information  1000  shown in FIG. 10 is looked up, and the channel selector device  656  switches to the channel indicated in the channel  1012  corresponding to the number of points  1010  to be used (step  910 ). The program is then displayed (step  912 ).  
         [0068]    If there is no response regarding coupon usage for a fixed time after displaying of the screen  800  (step  914 ), it is assumed that the service will not be used and the channel for displaying the normal program is selected (step  916 ). In this case, the channel would be the channel associated with 0 points in the point usage field  1010  (channel  1000 ). The program is then displayed (step  912 ). Also, if the user indicates no coupon usage, (step  906 ), control proceeds to step  916 .  
         [0069]    Once the channels are all displaying the same contents (time  716  in FIG. 7), the channels for which coupons are used are automatically switched to the normal program channel at a suitable time. Usage of the service is then completed.  
         [0070]    [0070]FIG. 11 is a flowchart showing a sample flow of operations performed in the viewer terminal  640  for obtaining coupon points used in this embodiment. FIG. 12 shows sample commercial coupon information used for obtaining coupons. This information is distributed along with commercials having coupons. First, the commercial coupon information shown in FIG. 12 will be described.  
         [0071]    [0071]FIG. 12 shows commercial coupon information  1200 . The commercial coupon information  1200  is formed from a commercial ID  1202  used to identify the commercial to which the coupon is attached, a point providing condition  1204  indicating the condition to be met to provide coupon points, and a point count  1206  to be added when the condition  1204  is met. In the example shown in FIG. 12, 10 points are provided when the viewer responds to a questionnaire indicated in the commercial. The point providing conditions can involve simply watching the commercial, of course, or can involve more active participation such as requesting information or registering for products. Conditions can also be combinations of these conditions. In this embodiment, only one set of conditions is involved, but more than one set of conditions can be made available so that, for example, simply viewing the commercial provides 1 point, responding to a questionnaire provides 5 points, and the like. In addition to questionnaires, points can be provided for taking a quiz or points can be provided according to the number of correct answers the viewer gives for a quiz.  
         [0072]    Using the flowchart in FIG. 11, the flow of operations for obtaining coupon points will be described.  
         [0073]    In the viewer terminal  640 , when a commercial is received, the presence of commercial coupon information associated with the commercial is checked (step  1100 ). After outputting the commercial (step  1102 ), a determination is made as to whether a coupon is attached to the commercial (step  1104 ). If a coupon is attached, a determination is made as to whether the point providing condition  1204  is met (step  1106 ). If the point providing condition is met, the associated coupon point count  1206  is added to the viewer&#39;s accumulated points recorded in the coupon information storage module  654  (step  1208 ). If no coupon is attached to the commercial in step  1104  or if the condition is not met at step  1106 , coupon points are not added and the operation is exited.  
         [0074]    According to this embodiment, the use of the service (timelines  702 ,  704 ) allows viewing to be extended according to the number of coupons used compared to normal program display not involving the service (timeline  700 ). Thus, highlights and decisive moments in the game that take place after completion of the normal broadcast time can be viewed.  
         [0075]    In the embodiment described above, available services are presented when normal programming ends (time  710 ). However, it would also be possible to display a coupon usage confirmation screen at the extension end time (time  712 ) corresponding to 100 coupon points so that another 100 points can be added to extend the service up to the end time  714  for the program.  
         [0076]    Also, in the embodiment described above, the viewer terminal automatically switches channels. However, it would also be possible to scramble the channels involving coupons, with descrambling keys being sent only to users of coupons.  
         [0077]    Furthermore, in the embodiment described above, output status for commercials broadcast separate from programs are recorded. However, it would also be possible to use a predetermined time within the broadcast of the program itself as a checkpoint at which to record output status so that subsequent program display contents can be changed.  
         [0078]    In the embodiment described above, the described example involves viewing a sports program without commercials by viewing commercials at a predetermined time. However, it would also be possible to implement the present invention for interactive programs in which viewers make selections that change subsequent program content output.  
         [0079]    The embodiments described above are provided merely as exemplary embodiments of the present invention. As such, they should not be used to limit the scope of the present invention. Rather the claims provided below should be used to interpret the scope of the present invention.  
       LIST OF DESIGNATORS  
       [0080]    [0080] 100 ,  600 : program distribution server  
         [0081]    [0081] 102 ,  602 : program content storage module  
         [0082]    [0082] 104 ,  604 : commercial content storage module  
         [0083]    [0083] 106 ,  606 : live encoder  
         [0084]    [0084] 108 ,  608 : live encoder  
         [0085]    [0085] 108 ,  608 : video management information storage module  
         [0086]    [0086] 110 ,  610 : program management module  
         [0087]    [0087] 112 ,  612 : program distribution module  
         [0088]    [0088] 114 ,  614 : commercial editing module  
         [0089]    [0089] 116 ,  142 ,  618 ,  658 : commercial device  
         [0090]    [0090] 120 ,  620 : user management module  
         [0091]    [0091] 122 ,  622 : user management information storage module  
         [0092]    [0092] 124 ,  624 : distribution log storage module  
         [0093]    [0093] 130 ,  670 : commercial network  
         [0094]    [0094] 140 ,  640 : viewer terminal device  
         [0095]    [0095] 144 ,  644 : decoder  
         [0096]    [0096] 146 ,  646 : display  
         [0097]    [0097] 148 ,  648 : speaker  
         [0098]    [0098] 150 ,  650 : input device  
         [0099]    [0099] 152 ,  652 : user management information storage module  
         [0100]    [0100] 154 : commercial output information storage module  
         [0101]    [0101] 160 ,  660 : control device  
         [0102]    [0102] 616 : transmitting device  
         [0103]    [0103] 630 : broadcast equipment  
         [0104]    [0104] 642 : receiving device  
         [0105]    [0105] 654 : coupon information storage module  
         [0106]    [0106] 656 : channel switching device