Abstract:
A digital receiver to effect display of at least one of video or a plurality of background information blocks each indicative of a program time period, including: a display change controller provided in the digital receiver, which changes a displayed shape of a particular background information block indicative of a program time period in the grid when the program time period indicated by the particular background information block exceeds a program time period which is displayed in a first prescribed zone; a full display controller controlling display of the program start time and program end time to occur concurrently together with the selected background information block on a same display whenever the selected background information block is selected.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS  
       [0001]     This is a continuation of U.S. application Ser. No. 10/773,307, filed Feb. 9, 2004, which is a continuation of U.S. application Ser. No. 09/418,822, filed Oct. 15, 1999, which is a continuation of U.S. application Ser. No. 08/844,431 filed Apr. 18, 1997 (now U.S. Pat. No. 6,037,995). This application relates to and claims priority from Japanese Patent Application No. 8-097993, filed on Apr. 19, 1996. The entirety of the contents and subject matter of all of the above is incorporated herein by reference.  
     
    
     BACKGROUND OF THE INVENTION  
       [0002]     The present invention relates to a broadcasting and communication receiver apparatus which receives information about a transmission program together with video and audio data, decodes and displays the program-associated data and more particularly, to a receiver apparatus which can display program-associated information.  
         [0003]     In a prior art television signal receiver apparatus, program information such as the title, start and end times of a broadcasting program has not been transmitted together with video and/or audio signal and thus it has been impossible to display these information on a television display screen. For this reason, TV viewers have acquired these information from a program schedule chart run in newspaper.  
         [0004]     Further, digital broadcasting has been being started in which digitized signals in place of conventional analog TV signals are transmitted to each home via satellite, cable or land-based broadcasting. Satellite broadcasting has been already realized in such a manner and, even in Japan, plans have been already in the works for start of such service. In the digital broadcasting, various sorts of additional information can be transmitted simultaneously with digitized video and audio signals. When such additional information can be used to prepare a program schedule chart.  
         [0005]     Meanwhile, even in the conventional analog broadcasting, when such a system is employed that program-associated information is multiplexed during vertical blanking interval, a program chart similar to that in the digital broadcasting case can be prepared.  
         [0006]      FIG. 1  is a block diagram of a multiplex system of an analog broadcasting type, in which S A  denotes an audio signal, S V  a video signal, S P  program-associated information such as a title, start and end times of a broadcasting program. Reference number  1  denotes a multiplexer for multiplexing the video signal S V  and the program-associated information S P , numeral  2  denotes a modulator for modulating the video signal S V  and the audio signal S A  into broadcasting electromagnetic wave.  
         [0007]     In the analog broadcasting system, there is employed a method for multiplexing the program-associated information S P  during the vertical blanking interval. However, the amount of information capable of multiplexing during the vertical blanking interval is small when compared with the amount of information transmittable in the digital broadcasting system. In the analog broadcasting system, further, with respect to its screen displaying function, its screen displaying ability as well as the amount of information to be handled are restricted. Therefore, the display screen implemented based on the analog broadcasting system is inferior in presentation ability to that based on the digital broadcasting system.  
         [0008]      FIG. 2  is a block diagram of a multiplex system of a digital broadcasting type, in which reference symbols  3   A ,  3   B  and  3   P  denote encoders for encoding the audio and video signals and program-associated information respectively. In the digital broadcasting system, the audio signal S A , video signal S V  and program-associated information S P  are encoded and compressed respectively by the encoders  3   A ,  3   B  and  3   P , and then subjected by the multiplexer  1  to a time division multiplexing operation to obtain a multiplexed signal. The multiplexed signal is modulated by the modulator  2  into broadcasting electromagnetic wave.  
         [0009]     The digital broadcasting system is featured in that, since the program-associated information S P  is encoded and compressed by the encoder  3   P , more signals can be multiplexed than the program-associated information multiplexable in the analog broadcasting system.  
         [0010]     When it is desired to display such program-associated information as program chart on a predetermined display zone of a display screen, e.g., a television display screen, if a display zone necessary for full display of all the display data is larger than the predetermined display zone, then all the display data cannot be fully displayed on the limited display zone. For this reason, there disadvantageously occurs such a situation that part of the originally-displayable information is missing.  
       SUMMARY OF THE INVENTION  
       [0011]     It is therefore a major object of the present invention to display the entire display data on specific information selected by a viewer or to add an information correcting display when the display data is missing to thereby allow the information of the display data to be presented within a limited display zone of a display screen.  
         [0012]     Another object of the present invention is to eliminate the need for newspapers and magazines carrying program-associated information.  
         [0013]     In accordance with an aspect of the present invention, there is provided a broadcasting and communication receiver apparatus which comprises a receiver means for receiving at least program-associated information including title, start and end times of a broadcast program together with a video signal and a audio signal; a decoder means for decoding the program-associated information from the received signal; a screen display means for processing and displaying the decoded program-associated information on a display screen; a command receiver means for receiving an input signal from a remote controller or from a key or keys provided to a main body of the receiver apparatus; and a display controller means for controlling the display screen based on the input signal. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0014]     Preferred embodiments of the present invention will now be described in conjunction with the accompanying drawings, in which;  
         [0015]      FIG. 1  is a block diagram of a multiplex system of an analog broadcasting type;  
         [0016]      FIG. 2  is a block diagram of a multiplex system of a digital broadcasting type;  
         [0017]      FIG. 3  is a block diagram of a broadcasting and communication receiver apparatus in accordance with a first embodiment of the present invention;  
         [0018]      FIG. 4  is an example of a display screen for display of program-associated information for explaining the present invention;  
         [0019]      FIG. 5  is a first example of the program-associated information display screen in  FIG. 3 ;  
         [0020]      FIG. 6  is a second example of the program-associated information display screen in  FIG. 3 ;  
         [0021]      FIG. 7  is a block diagram of a broadcasting and communication receiver apparatus in accordance with a second embodiment of the present invention;  
         [0022]      FIG. 8  is a third example of a display screen for display of program-associated information in  FIG. 7 ; and  
         [0023]      FIG. 9  is a fourth example of the program-associated information display screen in  FIG. 7 . 
     
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0024]     Embodiments of the present invention will be explained with reference to the accompanying drawings.  
         [0025]      FIG. 3  is a block diagram of a broadcasting and communication receiver apparatus in accordance with an embodiment of the present invention, which includes an input terminal  101  for input of broadcasting and communication signals from an external antenna or the like, a separator or demultiplexer  102  for extracting any one of video and audio signals and program-associated information signal from the received signal, a A/V decoder  103  for decoding the video and audio signals to reproduce original image and original audio, an image multiplexer  104  for multiplexing the video signal and such graphics as characters, a television display  105 , a command receiver  106  for receiving a user input, an information decoder  107  for decoding the transmitted program-associated information, a program-associated information buffer  108  for holding therein the decoded program-associated information, a control micro-computer  110  containing the above elements  106  to  109 , an input data amount calculator  111  for calculating the amount of display data received from the information buffer, displayable-data amount calculator  113  for calculating the number of character rows capable of being displayed on the display screen, a comparator  112  for comparing the amount of input data with the amount of displayable data, a display data setter  114  for setting character rows to be displayed, and a display controller  109  containing the above elements  111  to  114  for controlling the image multiplexer. Further included in the broadcasting and communication receiver apparatus are a receiver  118  for receiving broadcasting and communication signals and a decoder  119  for decoding the received signals.  
         [0026]     In  FIG. 3 , a signal applied to the input terminal  101  is sent to the demultiplexer  102  through the receiver  118  and decoder  119 . The demultiplexer  102  extracts video and audio signals from the received signal and sends them to the A/V decoder  103 . Similarly, the demultiplexer  102  also extracts program-associated information from the received signal and sends it to the information decoder  107  of the control micro-computer  110 . Program-associated information decoded by the information decoder  107  is sent to the program-associated information buffer  108 .  
         [0027]     When a signal indicative of a request of displaying the program-associated information is input to the command receiver  106 , the program-associated information held in the program-associated information buffer  108  is sent to the input data amount calculator  111  of the display controller  109 . The comparator  112  of the display controller  109  compares the number of character rows calculated by the input data amount calculator  111  with the number of displayable character rows calculated by the displayable-data amount calculator  113 , and sends its comparison result and the input data to the display data setter  114  for setting of the display characters. The display controller  109  controls the image multiplexer  104  in such a manner that the image multiplexer  104  multiplexes the display data received from the display data setter  114  and the video signal received from the A/V decoder  103  and displays it on the television display  105 .  
         [0028]     When the number of character rows of the input data is larger than the number of displayable character rows, the display data setter  114  sends as display data to the image multiplexer  104  the displayable character rows of the input data with a symbol indicative of omission added to the tail of last one of the character rows thereof.  
         [0029]     Shown in  FIG. 4  is an example of a display screen for display of program-associated information for explaining the present invention, in which reference numeral  201  denotes a program start time, numeral  202  denotes a program end time, and  203  denotes a program title. In the example of the program-associated information display screen of  FIG. 4 , the start and end times  201  and  202  and title  203  of the program are arranged in a row to express its program broadcasting schedule, but a display zone for displaying the program title  203  is too narrow to display all the program title  203  on the screen until its very end.  
         [0030]     In particular, when the system is required to express in Japanese (Kanji), it is necessary to make large the size of Kanji characters for its expression, which results in that the number of character rows displayable within the display zone is decreased and thus all the display data cannot be fully displayed.  
         [0031]      FIG. 5  is a first example of the program-associated information display screen in  FIG. 3 . In  FIG. 5 , numeral  301  denotes an omission symbol indicative of the fact that a tail part of the display data is omitted.  
         [0032]     In the case of the program-associated information display screen of  FIG. 4 , it is impossible to judge whether the display data such as the program title is fully displayed to its very end or displayable character rows alone of the display data are displayed. In the case of the program-associated information display screen of  FIG. 5 , on the other hand, when displayable character rows alone of the display data are displayed, the omission symbol  301  indicative of omission of the tail part of the display data is attached to the last tail of the display character row, whereby a viewer can clearly know it. Although “ . . . ” has been employed as the omission symbol in the program-associated information data screen of  FIG. 5 , another suitable symbol may be used as necessary. Further, contents to be displayed is not limited to such program-associated information as the program start time  201 , program end time  202  and program title  203 , but other information may be allowed.  
         [0033]      FIG. 6  shows a second example of the program-associated information display screen in  FIG. 3 , in which numeral  401  denotes a first display zone made up of n program display areas  401   1 ,  401   2 , . . . ,  401   n-1 , and  401   n ,  402  denotes a second display zone,  403  denotes a cursor for selecting either one of the n program display areas  401   1 ,  401   2 , . . . ,  401   n-1  in the first display zone, and  404  denotes a display zone in which a plurality (1, . . . , and n) of the first display zones  401  are arranged.  
         [0034]     Displayed on the first display zone  401  is at least part of display data including program title. Displayed on the second display zone  402  are the same display data including program titles as displayed on the first display zone  401  fully without any omission. The cursor  403 , in response to a user input signal, selects desired one of the n program display areas in the first display zone  401 . In this way, since the operation of the cursor  403  causes the user to arbitrarily select the specific first display zone  401  (for example,  4011 ) from the first display zone  401  arranged in the alternative display zone  404 , all the display data including program title required by the user can be fully displayed without any omission.  
         [0035]     Since only the display data required by the user are displayed without any omission on-the second display zone  402  and display data are displayed with an omission symbol on the first display zone  401 ; more first display zones can be displayed within the alternative display zone  404 .  
         [0036]     Turning to  FIG. 7 , there is shown a block diagram of a broadcasting and communication receiver apparatus in accordance with a second embodiment of the present invention, which includes a time information discriminator  115  for discriminating time information of input data, a display time band setter  117  for setting a time band of a program chart to be displayed on the display screen, and a time information comparator  116  for comparing the time information of the input data with the time band of the program chart. Other constituent elements are the same as those in  FIG. 3 .  
         [0037]     When a signal indicative of a request of displaying program-associated information on the display screen is input to the command receiver  106 , the program-associated information hold in the program-associated information buffer  108  is sent therefrom to the time information discriminator  115  of the display controller  109 , The time information comparator  116  of the-display controller  109  compares the time information discriminated by the time information discriminator  115  with the display time band set by the display time band setter  117 , and sends its comparison result and the input data to the display data setter  114  where their display format is set. The display controller  109  controls the image multiplexer  104  and composes the display data received from the display data setter and the video signal received from the A/V decoder  103  to display it on the television display  105 .  
         [0038]     The above program-associated information display screen has such a display format that uses at least character string in each information field and background, that is, shows such a program chart indicative of program broadcasting schedule that a program start time is given at the left end of each program name field and a program end time is given at the right end of each information field.  
         [0039]     When the time information of the input data is judged to be out of a display time band range, the display data setter  114  modifies the shape of the left or right end of the display data and sends it to the image multiplexer  104 . The display data setter  114  modifies the shape of the left or right end of the program name field to clearly indicate that the start or end time of the program is located out of the time band range of the program chart being displayed.  
         [0040]      FIG. 8  shows a third example of the program-associated information display screen in  FIG. 7 , which includes a channel number column  501 , a time scale column  502 , first program name display column  503  indicative of n-channel program display zones  503   1 ,  503   2 , . . .  503   n-1  and  503   n , a second program name display column  504 , a continuation display pattern  505  indicative of the fact that a program broadcast start or end time is located out of the program chart being displayed, and a program name alternative column  506  in which a plurality (n=l, . . . ) of the first program name display columns  503  are arranged.  
         [0041]     In the program display screen, abscissa denotes time, a display start position of the first program name display column  503  in the horizontal direction indicates a broadcast start time, and its horizontal length indicates a program broadcast duration. A measure of time is expressed in the time scale column  502 .  
         [0042]     Further, ordinate indicates broadcast channel. Displayed on the channel number column  501  are channel numbers of broadcasting stations, names or logo marks of the broadcasting stations.  
         [0043]     The user operates the cursor  403  using a remote controller or a key or keys provided on the main body of the receiver apparatus to select one of the first program name display columns  503   1 ,  503   2 , . . . and  503   n  displayed within the program name alternative column  506 . The selected first program name display column  503  is also displayed in the second program name display column  504 . More specifically, at least part of the program title is displayed on the first program name display column  503 , whereas, all the program title is wholly displayed without any omission on the second program name display column  504 .  
         [0044]     The broadcast start time, broadcast duration or broadcast end time of a program is expressed based on a measure of a time displayed in the time scale column  502 . However, when the program broadcast duration is longer than a duration expressible on the program chart screen or when the program broadcast star or end time is located out of the time band expressed in the program chart being displayed, it is impossible to express the program broadcast start or end time within the program chart display screen. For the purpose of expressing that the program broadcasting starts with a time earlier than the time band being displayed or that the program broadcasting ends in a time later than the time band being displayed; the continuation display pattern  505  is used.  
         [0045]     By using the continuation display pattern  505 , when the broadcast duration is overlapped as located ahead or behind the time band being displayed, it is possible to express that the broadcast start or end time is out of the time band being displayed.  
         [0046]     Shown in  FIG. 9  is a fourth example of the program-associated information display screen in  FIG. 7 , which includes a third time information display column  601 .  
         [0047]     On the program display screen, the third time information display column  601  is provided within the program-associated information display screen to express therein broadcast start and end times of a program. Therefore, when the program broadcast duration is longer than a duration displayable on the program display screen so that the program broadcast start or time cannot be expressed within the time scale column  502  of the program chart screen; it is possible to clearly display the broadcast start and end times, i.e., the time information of the received program-associated information without any omission.  
         [0048]     The time information display column  601  may be an independent display zone or may be provided within the second program name display column  504  to be expressed together with the program title.  
         [0049]     Although explanation has been made in connection with the program display screen based on the digital broadcasting system in the present embodiment, the present invention is not limited to the specific digital broadcasting system but may be applied to such a broadcasting system that the program-associated information is transmitted as multiplexed to the conventional analog television broadcasting system. Further, the present invention is not restricted to the program chart display screen but may be applied to other general display one.  
         [0050]     In accordance with the present invention, there can be provided, when it is desired to display information associated with an item selected condition, a program-associated information display screen of a broadcasting and communication receiver apparatus, on which all display data of the program-associated information received by the receiver apparatus are fully displayed without any omission.  
         [0051]     Further, the user can eliminate the need for purchasing newspapers or magazines-carrying the program-associated information.