JP2011254534A - Content playback device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a content playback device capable of preventing unexpected interruption of a program output due to battery exhaustion.SOLUTION: The content playback device includes: reception means that receives a desired program content; first output means that outputs a program content received by the reception means; first calculation means that calculates program viewable time based on the residual quantity of a battery; and display means that displays the program viewable time as well as the finish time of the program content in a user's recognizable mode.

Description

  The present invention relates to a content reproduction apparatus, and more particularly to a content reproduction apparatus that is applied to, for example, a mobile communication terminal and receives and outputs desired program content.

  Conventionally, as this type of apparatus, one disclosed in Patent Document 1 is known. In this prior art, power is supplied to a TV receiving circuit or the like by a battery. Further, based on the change of the cursor position on the menu screen, the TV receiving circuit is turned on when “TV” is likely to be selected, and the TV receiving circuit is turned off when another item is likely to be selected. It aims to quickly output content and reduce power consumption.

JP-A-2005-184255 [H04N 5/44, H04B 1/16, H04M 1/00, H04M 1/247, H04M 1/73]

  According to the prior art, since the power consumption of the TV receiving circuit is suppressed, the battery life becomes longer. However, even if the battery lasts longer, the battery will eventually run out. If the battery runs out unexpectedly while the program content is being output, the viewer feels a strong discomfort.

  Therefore, a main object of the present invention is to provide a content reproducing apparatus that can prevent an unexpected interruption of program output due to a battery exhaustion.

  According to the content playback apparatus of one aspect of the present invention, receiving means for receiving desired program content, first output means for outputting program content received by the receiving means, and program viewing based on the remaining battery level First calculation means for calculating time and display means for displaying the program viewable time and displaying the end time of the program content in a manner that the user can recognize.

  According to the present invention, it is possible to prevent an unexpected interruption of the program output due to the battery running out.

  The above object, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

It is a block diagram which shows the structure of one Example of this invention. It is an illustration figure which shows the structural example of EPG information. It is an illustration figure which shows an example of the message output with a program content. It is an illustration figure which shows the structural example of the program schedule based on EPG information. It is a flowchart which shows a part of CPU operation | movement applied to FIG. 1 Example. It is a flowchart which shows a part of other CPU operation | movement applied to FIG. 1 Example. It is a flowchart which shows a part of other CPU operation | movement applied to FIG. 1 Example. FIG. 12 is a flowchart showing yet another portion of the CPU operation applied to the embodiment in FIG. 1. It is a flowchart which shows a part of other CPU operation | movement applied to FIG. 1 Example. It is a block diagram which shows the structure of the other Example of this invention. It is a flowchart which shows a part of CPU operation | movement applied to FIG. 10 Example.

  Referring to FIG. 1, a mobile communication terminal 10 of this embodiment implements a telephone processing circuit 14 that realizes a call function in cooperation with a mobile communication system and a TV reception function in cooperation with a TV broadcast system. And a TV receiving circuit 24. Note that the call function is always activated as long as the power is turned on. On the other hand, the TV reception function is activated in response to the TV mode activation operation and stopped in response to the TV mode stop operation.

  When a dial operation is performed by the call operation panel 38, the CPU 32 instructs the telephone processing circuit 14 to perform a calling process. The telephone processing circuit 14 executes a calling process, and as a result, a calling signal is transmitted to a desired call partner. With the start of the calling process, the state of the mobile terminal 10 shifts from the non-calling state to the calling attempt state.

  When the call signal is received through the antenna 12, the telephone processing circuit 14 provides an incoming call detection signal to the CPU 32. The CPU 32 generates a voice message notifying the incoming call, and the switch SW is connected to the terminal T1. With the start of such incoming call notification processing, the state of the mobile terminal 10 shifts from the non-call state to the call trial state. The generated voice message is output from the speaker 20 through the switch SW and the amplifier 18.

  If no off-hook operation is performed on the incoming notification, the call connection will fail. The state of the mobile terminal 10 returns from the call trial state to the non-call state. On the other hand, if an off-hook operation is performed for the incoming call notification, the call connection is successful. The state of the mobile terminal 10 shifts from a call trial state to a call ready state.

  When the call-ready state is entered, the uttered voice captured by the microphone 16 is emitted from the antenna 12 through the modulation processing by the telephone processing circuit 14. The emitted speech voice is transmitted toward the communication terminal of the other party. The received voice sent from the other party is received by the antenna 12 and demodulated by the telephone processing circuit 14. The demodulated received voice passes through the switch SW and the amplifier 18 and is output from the speaker 20. When one speaker performs an off-hook operation, the call connection is interrupted. The state of the mobile terminal 10 shifts from the call available state to the non-call state.

  When a TV mode activation operation is executed by the TV operation panel 38, the CPU 32 supplies power to the TV reception circuit 24 to activate the TV reception function, and instructs the TV reception circuit 24 to select an initial channel. The channel that was selected when the TV mode stop operation was performed last time is held in the flash memory 36, and the TV receiving circuit 24 selects the channel held in the flash memory 36.

  The TV receiving circuit 24 receives a high-frequency television signal through the antenna 22 and extracts video / audio of a TV program broadcast on the initial channel. The program video is output from the addition circuit 28 to the LCD monitor 30. The switch SW is connected to the terminal T2, and the audio of the program is output from the speaker 20 through the terminal T2 and the amplifier 18.

When a channel switching operation is performed by the TV operation panel 38, the CPU 32 tunes the TV reception circuit 24. The TV receiving circuit 24 changes the channel of the program video / audio to be extracted to a desired channel. When a TV mode stop operation is performed by the TV operation panel 36, the CPU 32 stops supplying power to the TV receiving circuit 24. As a result, the TV reception function is stopped.

  Power for operating the TV receiving circuit 24 and other components of the mobile communication terminal 10 is supplied by the battery 42. The CPU 32 periodically detects the remaining amount of the battery 42 through the remaining amount detection circuit 40, calculates the TV viewable time based on the detection result, and stores the calculated result in the RAM 34 as a variable Tmax.

  The CPU 32 also fetches the variable Tmax from the RAM 34 when the initial channel is selected, and determines whether or not the current program can be viewed to the end based on the variable Tmax and the remaining time of the current program. When the determination result is negative, a message is displayed on the LCD monitor 30 through the character generator 26 (see FIG. 3). Whether or not the current program can be viewed to the end is also determined when one program is finished and the next program is started, and when a channel switching operation is performed.

  The message in FIG. 3 includes a sentence indicating that the current program cannot be viewed to the end, and an icon that prompts an OK operation or a program guide display operation. Note that a variable TmaxTV, that is, a number indicating the viewable time may be further included. When the OK operation is performed by the TV operation panel 38, the CPU 32 commands the message display stop.

  When a program guide display operation is performed by the TV operation panel 38, the CPU 32 fetches EPG (Electronic Program Guide) information from the RAM 34, generates a program guide based on the EPG information, and then displays the program guide through the character generator 26 on the LCD monitor. 30 (see FIG. 4).

  Here, the EPG information stored in the RAM 34 has been received by the TV receiving circuit 24. That is, the EPG information is broadcasted together with the video / audio of the program in the high-frequency television signal, and the TV receiving circuit 26 extracts the EPG information from the received high-frequency television signal, and the extracted EPG information is stored in the RAM 34. Forward to.

  The EPG information includes a program ID, a program title, a start time, an end time, and the like (see FIG. 2). The RAM 34 stores EPG information related to a plurality of programs that can be viewed in a certain period including the current time.

  Hereinafter, the operation of the mobile communication terminal 10 when viewing a desired TV program will be described. The current time is 19:20, and the flash memory 36 holds “4CH” as the initial channel. At this time, a movie program is broadcast on 4CH. This movie program ends at 21:00. The flash memory 34 also holds “60 minutes” as the TV viewable time (Tmax).

  When the TV mode activation operation is performed, power supply to the TV receiving circuit 24 is started. The TV receiving circuit 24 receives a high-frequency television signal through the antenna 22 and extracts video / audio of a movie program broadcast on an initial channel, that is, “4CH”, and EPG information. The extracted video is given to the LCD monitor 30 through the addition circuit 28. The extracted sound is given to the speaker 20 through the terminal T2, the switch SW and the amplifier 18. The LCD monitor 30 displays the video of the movie program, and the sound of the movie program is output from the speaker 20.

On the other hand, the extracted EPG information is stored in the RAM 34 (see FIG. 2). Since the EPG information is intermittently sent, a predetermined time is required until the necessary EPG information is stored in the RAM 34. The CPU 32 fetches the end time (21:00) of the current program, that is, the movie program, and the TV viewable time (Tmax = 60 minutes) from the RAM 34, and subtracts the current time (19:20) from the fetched end time. To calculate the remaining time (T = 100 minutes) of the current program. Then, by comparing the captured TV viewing time with the calculated remaining time, it is determined whether or not the current program can be viewed to the end.

  In this case, since the TV viewable time is shorter than the remaining time of the current program (Tmax <T), it is determined that viewing is impossible, and a message is output from the character generator 26. The output message is added to the video signal from the TV receiving circuit 24 by the adding circuit 28. A message such as “This program cannot be viewed until the end” is displayed on the LCD monitor 30 so as to be superimposed on the video of the movie program.

  If an OK operation is performed here, the message display is stopped and the video / audio output of the movie program is continued. In this case, the remaining battery level becomes zero 40 minutes before the end of the program, and the video / audio output is stopped.

  On the other hand, when the program guide display operation is performed, the CPU 32 displays a plurality of programs ("news", "movie", "variety", "") that can be viewed for a certain period including the current time, for example, 2 hours from 19:00 to 21:00. EPG information relating to “sports” and “drama”) is taken from the RAM 34, and a program guide is generated based on the taken EPG information. The generated program guide is output to the LCD monitor 30 through the character generator 26 (see FIG. 4).

  The CPU 32 also has a plurality of end times (19:30, 21:00, and 20:00) respectively corresponding to a plurality of programs (“news”, “movie”, and “variety”) that are currently viewable and the current time. The difference from (19:20) is calculated. Next, by comparing each of the plurality of calculated differential times (10 minutes, 100 minutes, and 40 minutes) with the TV viewable time (60 minutes), each of the plurality of currently viewable programs is completed It is determined whether or not viewing is possible. For the programs (“news” and “variety”) that have been determined to be viewable to the end, coloring processing is performed on the background portion of the program title described in the program guide (see FIG. 4).

  Referring to the program guide in FIG. 4, it can be seen that movies cannot be viewed to the end, but news or variety can be viewed to the end. Here, when a program selection operation for selecting “variety” is performed, video / audio output of the variety program is started instead of the movie program. In this case, at the end of the program, there is still a remaining battery charge for watching TV for 20 minutes.

  In relation to the operation of viewing a desired TV program, the CPU 32 controls the EPG information management task shown in FIG. 5, the TV control task shown in FIG. 6, and the control shown in FIG. 7 under the control of a multitask OS such as μITRON. The viewable time calculation task and the character display control task shown in FIGS. 8 and 9 are executed in parallel. Note that control programs corresponding to these flowcharts are stored in the flash memory 36.

  Referring to FIG. 5, in step S1, it is determined whether or not EPG information is received by the TV receiving circuit 24. If YES, the process proceeds to step S3. In step S3, it is determined whether or not new information is included in the received EPG information. If NO, the process proceeds to step S7. If “YES” in the step S3, the new information is stored in the RAM 34 in a step S5. Then, the process proceeds to step S7.

In step S7, it is determined whether or not change information is included in the received EPG information. If NO, the process returns to step S1. If “YES” in the step S7, the information stored in the RAM 34 is updated with the change information, and the process returns to the step S1.

  With reference to FIG. 6, it is determined whether or not a TV activation operation has been performed in step S21. If YES, the process proceeds to step S23 to activate the TV receiving circuit 24. In step S25, the TV receiving circuit 24 is tuned to the channel (holding CH) held in the flash memory 36. In step S27, a viewable time calculation task and a character display control task are activated. Then, a loop of steps S29 and S31 is entered.

  In step S29, it is determined whether a TV stop operation has been performed. In step S31, it is determined whether a program guide display operation has been performed. If “YES” in the step S29, the process shifts to a step S33 to hold the currently selected channel in the flash memory 36. In step S35, the TV receiving circuit 24 is stopped, and in step S37, the audible time calculation task and the character display control task are ended. Then, the process returns to step S21.

  If “YES” in the step S31, the process shifts to a step S39 to take in the EPG information from the RAM 34. In step S41, a program guide is generated based on the captured EPG information. In step S43, the character generator 26 is instructed to display the generated program guide. Then, a loop of steps S45 and S47 is entered. In step S45, the presence / absence of a program selection operation is determined. In step S47, the presence / absence of a cancel operation is determined. If “YES” in the step S47, the process returns to the loop of the steps S29 and S31.

  If “YES” in the step S45, the process proceeds to a step S49, and the TV receiving circuit 24 is tuned to a channel corresponding to the selected program. In a succeeding step S51, the character generator 26 is instructed to stop displaying the program guide, and the process returns to the loop of steps S29 and S31.

  Referring to FIG. 7, in step S <b> 61, the remaining battery level detection circuit 42 is commanded to detect the remaining battery level 42. In step S 63, the detection result, that is, the remaining battery level is taken from the remaining battery level detection circuit 42. In step S65, the TV viewable time is calculated based on the remaining battery level. Note that the TV viewable time is obtained by dividing the remaining battery power by the power consumption with the TV reception function turned on. In step S67, the calculation result is set in the variable Tmax. Then, a loop of steps S69 and S71 is entered.

  In step S69, it is determined whether or not a predetermined time has elapsed since the previous remaining amount detection. In step S71, it is determined whether or not the mobile communication terminal 10 is connected to a charger (not shown). If “YES” in the step S69, the process returns to the step S61. If “YES” in the step S71, the variable Tmax is set to infinity in a step S73. After setting, the process proceeds to step S75.

  In step S75, it is determined whether or not the mobile communication terminal 10 is disconnected from the charger. If YES here, the process returns to step S61.

  Referring to FIG. 8, in step S81, the end time of the current program is fetched from RAM. In step S83, the remaining time (T) of the current program is calculated by subtracting the current time from the captured end time. In step S85, the TV viewable time (Tmax) is fetched from the RAM 34. In step S87, it is determined whether Tmax <T. If “NO” in the step S87, the process proceeds to a loop of steps S95 and S97.

If YES in step S87, the process proceeds to step S89 to instruct the character generator 26 to display a message (see FIG. 3) that the current program cannot be viewed to the end. In a succeeding step S91, it is determined whether or not an OK operation or timeout has occurred. When an OK operation is performed via the operation panel 38 or when a predetermined time has elapsed from the display of the message, “YES” is determined in the step S91, and the process proceeds to a step S93. In step S93, the character generator 26 is instructed to stop displaying the message. Then, a loop of steps S95 and S97 is entered.

  In step S95, it is determined whether or not the program ID of the current program has changed. In step S97, it is determined whether or not the program guide has been displayed. When one program ends and the next program starts, or when a selection operation for selecting another program is performed, “YES” is determined in the step S95, and the process returns to the step S81. When the program guide display operation is performed, “YES” is determined in the step S97, and the process shifts to a step S99.

  Referring to FIG. 9, in step S99, the end time of the currently broadcast program (P1, P2,..., Pn) is fetched from RAM. In the example of FIG. 4, end times “19:30”, “21:00”, and “20:00” corresponding to “news”, “movie”, and “variety”, respectively, are captured.

  In step S101, the remaining time (T1, T2,..., Tn) of the currently broadcast program is calculated by subtracting the current time from the captured end time. In the example of FIG. 4, remaining times “10 minutes”, “100 minutes”, and “40 minutes” corresponding to “news”, “movie”, and “variety” are calculated.

  In step S103, Tmax is fetched from the RAM. In step S105, the variable i is set to “1”. In step S107, it is determined whether or not Tmax ≧ Ti. If YES here, the process proceeds to step S109, the program Pi is registered in a list (not shown), and the process proceeds to step S111. If NO in step S107, step S109 is skipped and the process proceeds to step S111. In the example of FIG. 4, two programs “news” and “variety” are registered in the list.

  In step S111, it is determined whether i = n. If YES here, the variable i is incremented in step S113, and the process returns to step S97. If “NO” in the step S101, the background color of the program title corresponding to the program registered in the list among the program titles described in the program guide is changed in a step S115. Then, the process proceeds to step S117. In the example of FIG. 4, the background colors of “news” and “variety” are changed.

  In step S117, it is determined whether or not a program is displayed. When the program selection operation or the program guide erasure operation is performed, YES is determined in the step S117, and the process returns to the loop of the steps S95 and S97.

  As described above, in this embodiment, the program content is received by the TV receiving circuit 24 and output by the amplifier 18 and the adding circuit 28. The CPU 32 calculates the program viewable time based on the remaining amount of the battery 42 (S65), calculates the difference time indicating the difference between the current time and the end time of the program content (S83), and the program viewable time is the difference. It is determined whether or not the time is shorter (S87), and when the determination result is affirmative, a message (see FIG. 3) is output through the character generator 26 (S89).

Therefore, when the program content is continuously viewed, a message is output when the battery runs out before the end time of the program content. The viewer can recognize beforehand the interruption of the output of the program content due to the battery running out by outputting the message. This prevents unexpected interruption of program output due to battery exhaustion.

  Here, the message notifies the prediction of the program output interruption occurrence and the possibility of displaying the program guide. The viewer can perform a program guide display operation when it is predicted that an output interruption will occur due to running out of battery in the current program.

  When the program guide display operation is performed, the CPU 32 displays a program guide in which a plurality of program titles (program identifiers) respectively corresponding to a plurality of program contents currently being broadcast are described (S43). Next, a difference time indicating a difference between the current time and the end time is calculated for each of a plurality of program contents currently being broadcast (S101), and further calculated for each of the calculated plurality of difference times. It is determined whether or not it is longer than the program viewable time (S107 to S113). In the displayed program guide, a difference is added to the display mode of the program identifier between the program content corresponding to the difference time with a positive determination result and the program content corresponding to the difference time with a negative determination result. (S115).

  The viewer can refer to the program guide and select another program that does not cause output interruption due to battery exhaustion.

  In this embodiment, the EPG information necessary for calculating the difference time and generating the program guide is broadcast by being included in the high frequency television signal, and the TV receiving circuit 24 extracts the EPG information from the high frequency television signal and extracts it. Although the EPG information is stored in the RAM 34, the server may hold the EPG information, and the mobile communication terminal 10 may acquire the EPG information from the server via the Internet. Such an embodiment is shown in FIG.

  Referring to FIG. 10, a server 52 is connected to the Internet 50 and holds EPG information. The mobile communication terminal 10 a of this embodiment includes a network controller 44. The network controller 44 implements a network communication function for communicating with the server 52 via the Internet 50 in cooperation with the mobile communication system. The high-frequency television signal captured by the antenna 22 does not include EPG information, and therefore the TV receiving circuit 24a does not have a function of extracting EPG information from the high-frequency television signal. Other components perform the same operations as in FIG.

  When a TV activation operation is performed, the mobile communication terminal 10 a is connected to the server 52 via the network controller 44 and the Internet 50, and acquires EPG information from the server 52. After acquisition, the connection is canceled. The acquired EPG information is stored in the RAM 34, and is used for calculating the remaining program time and generating the program table.

  Thereafter, the connection process is executed every predetermined time, and EPG information is acquired from the server 52 if it is necessary to update. Part or all of the EPG information stored in the RAM 34 is updated with the acquired EPG information. As a result, the latest EPG information is always stored in the RAM 34, so that the remaining program time can be calculated and the program table can be generated appropriately. Operations other than the management of the EPG information are the same as those in the embodiment of FIG. 1 and the description thereof is omitted (see FIGS. 2 to 4 and FIGS. 6 to 9).

  The CPU 32 executes an EPG information acquisition task shown in FIG. 11 instead of the EPG information management task shown in FIG.

  Referring to FIG. 11, in step S131, network connection processing is executed in cooperation with network controller 44, telephone processing circuit 14, and the like. In step S133, the server 52 is accessed to determine the presence / absence of new EPG information and / or the presence / absence of change regarding acquired information. If NO, the process proceeds to step S139.

  If “YES” in the step S133, the process shifts to a step S135 to acquire EPG information from the server 52 via the Internet 50. The EPG information acquired here includes new information and / or change information. In step S137, the new information is stored in the RAM 34 and / or updated with the change information of the stored information.

  Then, network disconnection processing is executed in step S137, and the process proceeds to step S141 to determine whether or not a predetermined time has elapsed. If “YES” in the step S141, the process returns to the step S131.

  According to this embodiment, even when an analog TV broadcast is received, it is possible to prevent an unexpected interruption of program output due to running out of battery.

  In each embodiment, the message is directly expressed by displaying a sentence or a word, but for example, a symbol or icon is displayed, the display size of the program video is reduced, the brightness of the program video is reduced, and the operation is performed. It may be expressed by an indirect method such as dimming the backlight of the panel. In addition to visual expression, for example, auditory expression such as reading a sentence or generating a warning sound, or tactile expression such as vibrating a housing is possible.

  In each embodiment, the background of the program title that can be viewed to the end of the plurality of program titles described in the program table is colored, but the color of the character itself may be changed. In addition, the character may be enlarged, the font may be changed, the frame surrounding the character may be thickened, or the character and / or background may blink. Conversely, the background of a program title that cannot be viewed until the end may be darkened, the characters may be reduced, or the characters may be made translucent. In short, it is only necessary to add a difference in the display mode of the program title between the program content that can be viewed to the end and the program content that cannot be viewed in the program table. The difference may be anything as long as the viewer can identify it.

  A first content reproduction apparatus according to an embodiment of the present invention includes a receiving means (24) for receiving desired program content, a first output means (18, 28) for outputting program content received by the receiving means, First calculating means (S65) for calculating the program viewable time based on the remaining amount of the battery (42), and calculating a difference time indicating a difference between the current time and the end time of the program content output by the output means. 2 calculating means (S83), first determining means (S87) for determining whether or not the program viewable time calculated by the first calculating means is shorter than the difference time calculated by the second calculating means, and the first Second output means (S89) is provided for outputting a message when the determination result of the determination means is affirmative.

  The desired program content is received by the receiving means and output by the first output means. The first calculation means calculates the program viewable time based on the remaining battery level, and the second calculation means calculates a difference time indicating a difference between the current time and the end time of the program content output by the output means. To do. The first determining means determines whether or not the program viewable time calculated by the first calculating means is shorter than the difference time calculated by the second calculating means. If the determination result of the first determination means is affirmative, a message is output by the second output means.

  Therefore, when the program content is continuously viewed, a message is output when the battery runs out before the end time of the program content. The viewer can recognize beforehand the interruption of the output of the program content due to the battery running out by outputting the message. This prevents unexpected interruption of program output due to battery exhaustion.

A second content reproduction apparatus according to an embodiment of the present invention is a first content reproduction apparatus, wherein the program information of a plurality of programs respectively corresponding to a plurality of program contents currently being broadcast in response to a program guide display operation. Display means for displaying the program table formed by (S43),
Third calculation means (S101) for calculating the difference time indicating the difference between the current time and the end time for each of the plurality of program contents currently being broadcast, and for each of the plurality of difference times calculated by the third calculation means. Second discriminating means (S107) for discriminating whether or not the program viewable time calculated by one calculating means is longer, and second discriminating means for displaying the program information forming the program table displayed by the display means Further, a changing means (S115) for changing according to the determination result is provided.

  The program guide is displayed by the display means in response to the program guide display operation. The program guide is formed by program information of a plurality of programs respectively corresponding to at least a plurality of program contents currently being broadcast. The third calculation means calculates a difference time indicating a difference between the current time and the end time for each of a plurality of program contents currently being broadcast. The second determining means determines whether each of the plurality of differential times calculated by the third calculating means is longer than the program viewable time calculated by the first calculating means. The display mode of the program information forming the program guide displayed by the display unit is changed by the changing unit according to the determination result of the second determining unit.

  Therefore, in the program guide, program information of a program that will cause output interruption due to battery exhaustion and program information of a program that will not cause output interruption due to battery exhaustion are displayed in different modes. The viewer can select a program that will not cause output interruption due to battery exhaustion by referring to the program guide.

  In the third content reproduction apparatus according to the embodiment of the present invention, in the second content reproduction apparatus, the message is a message for notifying the occurrence of the program output interruption and the possibility of displaying the program guide.

  When it is predicted that output interruption will occur due to battery exhaustion in the current program, the viewer can perform another program guide display operation and select another program that does not cause output interruption.

The fourth content reproduction apparatus according to an embodiment of the present invention further includes switching means (S49) for switching the program content to be received by the reception means in response to the program selection operation in the second content reproduction apparatus. . The program content to be received by the receiving means is switched by the switching means in response to the program selection operation.

A fifth content reproduction device according to an embodiment of the present invention detects a change in a program identifier attached to program content received by a receiving unit in any of the first to fourth content reproduction devices. Detection means (S95) is further provided, and the second calculation means executes the calculation process in response to the detection process of the detection means.

  A change in the program identifier attached to the program content received by the receiving means is detected by the detecting means. The calculation process of the second calculation unit is executed in response to the detection process of the detection unit.

  Therefore, when one program is finished and the next program is started, or when another program is selected in response to the program selection operation, the difference time, that is, the remaining time of the program is calculated. If it is determined that the video cannot be viewed until the end, a message is output. Thus, each time the output program changes, the viewer can know whether or not the program can be viewed to the end.

  A sixth content reproduction apparatus according to an embodiment of the present invention acquires program guide information including a program identifier, a start time, and an end time for at least a plurality of program contents currently being broadcast in the second content reproduction apparatus. Acquisition means (S39) is further provided.

  A seventh content reproduction apparatus according to an embodiment of the present invention is the sixth content reproduction apparatus, wherein the reception means further receives program guide information and stores the program guide information received by the reception means ( 34), and the acquisition means acquires program guide information from the storage means.

  An eighth content reproduction apparatus according to an embodiment of the present invention is the sixth content reproduction apparatus, further comprising communication means (44) communicating with the server (52), wherein the acquisition means transmits the program guide information through the communication means. Obtain from the server.

  A ninth content reproduction device according to an embodiment of the present invention is the content reproduction device according to any one of the first to eighth contents, and the battery is built-in.

A tenth control program according to an embodiment of the present invention includes a receiving circuit (24) that receives desired program content, an output circuit (18, 28) that outputs program content received by the receiving circuit, and at least a receiving circuit. A first calculation step (S65) for calculating the program viewable time based on the remaining battery level in the processor (32) of the content reproduction apparatus (10) including the battery (42) for supplying power to the output circuit. The second calculation step (S83) for calculating the difference time indicating the difference between the current time and the end time of the program content output by the first output circuit, the program viewable time calculated by the first calculation step is the second A first determination step (S87) for determining whether or not the difference time calculated by the calculation step is shorter, and a message for outputting a message when the determination result of the first determination step is affirmative To perform the output step (S93).

DESCRIPTION OF SYMBOLS 10, 10a ... Portable communication terminal 12, 22 ... Antenna 14 ... Telephone processing circuit 24, 24a ... TV receiving circuit 26 ... Character generator 30 ... LCD monitor 32 ... CPU
40 ... remaining amount detection circuit 42 ... battery 34 ... RAM
44 ... Network controller

Claims (5)

Receiving means for receiving desired program content;
First output means for outputting program content received by the receiving means;
First calculation means for calculating a program viewable time based on a remaining battery level, and a display means for displaying the program viewable time and displaying the end time of the program content in a manner recognizable by the user. , Content playback device.   The content reproduction apparatus according to claim 1, wherein the display means displays a program guide formed by program information of a plurality of programs respectively corresponding to a plurality of program contents currently being broadcast in response to a program guide display operation. The content reproduction apparatus according to claim 2, further comprising switching means for switching program content to be received by the receiving means in response to a program selection operation. A detector for detecting a change in a program identifier attached to the program content received by the receiver;
The content reproduction apparatus according to claim 1, wherein the second calculation unit executes a calculation process in response to a detection process of the detection unit. The content reproduction apparatus according to claim 1, wherein the battery is a built-in type.