JP2014127848A - Electronic apparatus, and service control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an electronic apparatus capable of executing an appropriate service between with a battery-driven external device.SOLUTION: An electronic apparatus includes a communication module and control means. The control means controls whether to execute a first service or a second service different from the first service using the content of the first service and a power charged to a battery of an external device, when a connection is established with the external device capable of being driven by power supplied from a battery, and when the execution of the first service through the connection with the external device is requested.

Description

  Embodiments described herein relate generally to an electronic device that operates in cooperation with an electronic device that can be driven by a battery, and a service control method that is applied to the electronic device.

  In recent years, various electronic devices such as tablets, smartphones, and PDAs have been developed. Since this type of electronic device can be driven by the electric power charged in the battery, the user can carry and use the electronic device.

  In such a portable electronic device, various data stored in another electronic device such as a personal computer (PC), a television having a recording function, or a video recorder may be used. The user uses the data stored in the PC with the portable electronic device by connecting the portable electronic device and the PC via a USB cable or the like and transferring the data to the portable electronic device, for example. To do. Furthermore, the user can use the data stored in the PC with the portable electronic device by transferring the data between the devices via a wireless communication connection (home network) such as a wireless LAN.

  Thereby, for example, broadcast program data (video content data) recorded by a recording device such as a TV having a recording function, a personal computer provided with a TV tuner, or a video recorder can be dubbed to a portable electronic device. .

JP 2008-0721161 A

  By the way, in a service that requires a long time (for example, several hours) such as transfer of large data such as broadcast program data, the power charged in the battery by the portable electronic device during the execution of the service is used. The service may be exhausted and the service may not be completed.

  An object of one embodiment of the present invention is to provide an electronic device and a service control method capable of executing an appropriate service with an external device driven by a battery.

  According to the embodiment, the electronic device includes a communication module and a control unit. The control means establishes a connection with an external device that can be driven by power supplied from a battery, and requests execution of the first service via the connection with the external device. Using the content of one service and the amount of power charged in the battery of the external device, it is controlled whether to execute the first service or to execute a second service different from the first service.

The block diagram which shows the structure of the service control system containing the electronic device which concerns on embodiment, and the portable device cooperated with the said electronic device. 6 is an exemplary diagram showing a configuration example of reservation information used by the electronic apparatus of the embodiment. FIG. 6 is an exemplary diagram showing a configuration example of dubbing device information used by the electronic device of the embodiment. FIG. The figure which shows the example of the electronic program guide displayed by the portable apparatus of FIG. The figure which shows the example of the video recording reservation / dubbing reservation screen displayed by the portable apparatus of FIG. The figure which shows the example of the warning screen displayed by the portable apparatus of FIG. The figure which shows the example of the recorded program list displayed by the portable apparatus of FIG. 2 is an exemplary block diagram showing the system configuration of the electronic apparatus of the embodiment. FIG. The block diagram which shows the system configuration | structure of the portable apparatus of FIG. 7 is a flowchart for explaining a first example of a procedure of processing executed by the electronic device of the embodiment when a dubbing reservation is requested by the portable device of FIG. 1. 7 is a flowchart for explaining a second example of a processing procedure executed by the electronic device of the embodiment when a dubbing reservation is requested by the mobile device of FIG. 1. 7 is a flowchart for explaining a third example of a procedure of processing executed by the electronic device of the embodiment when a dubbing reservation is requested by the portable device of FIG. 1. 7 is a flowchart for explaining a fourth example of a procedure of processing executed by the electronic device of the embodiment when a dubbing reservation is requested by the mobile device of FIG. 1. 7 is a flowchart for explaining a first example of a procedure of processing executed by the electronic device of the embodiment when video data is dubbed to the portable device of FIG. 1. 7 is a flowchart for explaining a second example of a procedure of processing executed by the electronic device of the embodiment when video data is dubbed to the portable device of FIG. 1. 6 is a flowchart for explaining a third example of a procedure of processing executed by the electronic device of the embodiment when video data is dubbed to the portable device of FIG. 1.

Hereinafter, embodiments will be described with reference to the drawings.
First, a configuration example of a service control system including an electronic device according to an embodiment will be described with reference to FIG. This electronic device is realized as a recording device 2 having a function of recording a broadcast program, such as a digital television receiver, a video recorder, or a personal computer.

  The recording device 2 operates in cooperation with the portable device by communicating with a portable device (portable terminal) connected to a home network, for example, a wireless LAN, for example, a PDA, a smartphone, a tablet computer, or the like. It is configured as follows. This type of portable device can be driven by electric power supplied from a battery. In the following, it is assumed that the mobile device is realized as the tablet computer 1.

  The communication module provided in the recording device 2 establishes a connection with the communication module provided in the tablet computer (external device) 1 and executes a service with the tablet computer 1. This service may be anything as long as the recording device 2 and the tablet computer 1 are executed in cooperation with each other. For example, video data of a broadcast program recorded by the recording device 2 is converted into the tablet data. This is a service for dubbing (transferring) to the computer 1. The content of the service may be any information as long as it is information about the service or an object related to the service, and the type of service (dubbing, playback, recording, etc.) and the object on which the service is executed (content ) Size. In the dubbing service, since the program recorded by the recording device 2 is dubbed to a portable device such as the tablet computer 1, the user can watch a program recorded by a video recorder at home, for example, outside the home. can do.

  However, in a service for dubbing video data of a broadcast program, the amount of video data may be enormous, and it may take a long time (for example, several hours) to complete the execution of the service. Also, portable devices such as the tablet computer 1 are often used without being connected to an external power source. Therefore, in a service that takes a long time to complete execution, such as this service, the tablet computer 1 uses up the power charged in the battery 109 during execution of the service, and the service cannot be completed (for example, (Dubbing of video data may fail).

  In the present embodiment, the service is changed according to the remaining battery level of the tablet computer 1 and the content of the service so that the service executed between the recording device 2 and the tablet computer 1 can be normally completed. For example, the recording device 2 estimates the power consumption of the tablet computer 1 until the execution of the service is completed, and the estimated power consumption and the remaining amount of the battery 109 of the tablet computer 1 (the battery 109 is charged) The service may be changed based on the amount of power. The changed service (second service) is, for example, a part of the content of the service before the change (first service).

  For example, when a service for dubbing video data of a broadcast program is executed, in this embodiment, the power consumption of the tablet computer 1 for executing the service is greater than or equal to the remaining amount of the battery 109 of the tablet computer 1. The second service dubbing video data with a reduced data size (data amount) by transcoding the video data (eg, recompressing, converting to a file format with a small data size, converting to a low resolution, etc.) To be executed.

  The tablet computer 1 includes a control unit 11, a display processing unit 12, an input processing unit 13, a reservation processing unit 14, a battery control unit 15, a communication processing unit 16, a touch screen display 17, a data management unit 18, and the like.

  The control unit 11 controls the operation of each unit in the tablet computer 1.

  The display processing unit 12 generates a display signal and outputs the generated display signal to the touch screen display 17. The touch screen display 17 displays a screen image based on the display signal. For example, when a program dubbed from the recording device 2 is reproduced, the display processing unit 12 generates a display signal using video data of the program. The display processing unit 12 generates display signals for displaying various operation screens and notification screens, for example.

  The input processing unit 13 detects an operation using the touch screen display 17. For example, the input processing unit 13 detects a user operation on the operation screen displayed on the touch screen display 17.

  The battery control unit 15 manages the power supplied from the battery 109 to each unit in the tablet computer 1. The battery control unit 15 detects whether the tablet computer 1 is driven by power from an external power source or power from the battery 109. In addition, the battery control unit 15 detects the remaining amount of power charged in the battery 109.

  The battery control unit 15 can also detect the power consumption of the tablet computer 1. For example, the battery control unit 15 detects the power consumption of the tablet computer 1 when dubbing video data of a recorded program from the recording device 2 to the tablet computer 1.

  The communication processing unit 16 establishes connection with the recording device 2 via a home network, for example, via a wireless network such as a wireless LAN, and executes communication.

  The communication processing unit 16 also executes communication with various servers via an external network such as the Internet. Such a server includes, for example, a server that manages program guide information related to various broadcast programs. The communication processing unit 16 can receive program guide (EPG) data from the server. The tablet computer can download the program guide data for a certain period (for example, for two weeks) from all of the broadcast stations that can be viewed from the server.

  The display processing unit 12 displays the program guide (EPG) on the touch screen display 17 based on the received program guide (EPG) data. The program guide includes a plurality of items corresponding to a plurality of programs. Each item indicates, for example, the title of the corresponding program, the broadcast start time, the broadcast end time, and the like. The input processing unit 13 detects an operation on the touch screen display 17 by the user and notifies each unit in the tablet computer 1. For example, the user can instruct recording reservation or dubbing reservation of the selected program by performing an operation of selecting one program (item) from the program guide displayed on the touch screen display 17.

  For example, when a recording reservation and a dubbing reservation for a selected program are instructed, the reservation processing unit 14 requests the recording device 2 to make a recording reservation and a dubbing reservation for the selected program.

  More specifically, the reservation processing unit 26 first acquires the power information of the tablet computer 1 generated by the battery control unit 15. This power information includes, for example, information indicating whether the power for driving the tablet computer 1 is supplied from an external AC power source or the battery 109, and dubbing program video data from the recording device 2 to the tablet computer 1. Information indicating the power consumption of the tablet computer 1 at the time. When the power driving the tablet computer 1 is supplied from the battery 109, the power information further includes battery remaining information indicating the remaining amount of power held in the battery 109.

  Then, the reservation processing unit 14 transmits the program information indicating the selected program and the power information to the recording device 2 via the communication processing unit 16, thereby making the recording device 2 record recording and dubbing reservation. Request. The recording device 2 performs a recording reservation process and a dubbing reservation process for the selected program based on the transmitted program information. The recording device 2 executes a process for recording the reserved program during the broadcast time of the reserved program and a process for dubbing the video data of the recorded program on the tablet computer 1.

  The data management unit 18 receives video data of a program reserved for dubbing from the recording device 2 via the communication processing unit 16. Then, the data management unit 18 performs a predetermined encryption process (local encryption) on the received video data, and stores the encrypted video data in a storage device 19 such as a flash memory. For example, in response to a user operation requesting reproduction of video data (program), the data management unit 18 reads the video data from the storage device 19 and decodes it. The display processing unit 12 displays the video of the program on the touch screen display 17 using the decoded video data.

  The program to be dubbed (or reserved for dubbing) may be selected from a list of programs reserved for recording by the recording device 2.

  In this case, the communication processing unit 16 receives data indicating a list of programs reserved for recording from the recording device 2. The list of scheduled recording programs may include programs that have already been recorded (recorded programs) in accordance with the scheduled recording.

  The display processing unit 12 displays a list of scheduled recording programs on the touch screen display 17 based on the received list data of scheduled recording programs. The list of scheduled recording programs includes, for example, a plurality of items corresponding to a plurality of programs reserved for recording. For example, the user can instruct dubbing (dubbing reservation) of the selected program by performing an operation of selecting one program (item) from the list displayed on the touch screen display 17.

  In addition, when the dubbing of the selected program (dubbing reservation) is instructed, the reservation processing unit 14 requests the recording device 2 to dubb the selected program (dubbing reservation). If the selected program is already recorded, the reservation processing unit 14 requests dubbing of the program, and if the selected program is a program before the start of broadcasting or during broadcasting, the reservation processing unit 14 reserves dubbing of the program. Request.

  More specifically, the reservation processing unit 26 first acquires the power information of the tablet computer 1 generated by the battery control unit 15. Then, the reservation processing unit 14 transmits program information indicating the selected program and power information to the recording device 2 via the communication processing unit 16, thereby dubbing the program to the recording device 2 (dubbing reservation). Request. The recording device 2 performs dubbing processing (dubbing reservation processing) of the selected program based on the transmitted program information.

  The recording device 2 includes a control unit 21, a display processing unit 22, a TV tuner 23, a recording processing unit 24, a communication processing unit 25, a reservation processing unit 26, a re-encoding processing unit 27, and the like.

  The control unit 21 controls the operation of each unit in the recording device 2.

  The TV tuner 23 selects a broadcast signal of an arbitrary channel from a digital television broadcast signal (for example, a terrestrial digital television broadcast signal, a satellite digital television broadcast signal, a CATV broadcast signal, etc.) received by the antenna 202. Is configured to do. The TV tuner 23 may include a plurality of tuners respectively corresponding to a plurality of types of broadcast waves (terrestrial broadcast, BS broadcast, CS broadcast, CATV broadcast, etc.). The TV tuner 23 selects an arbitrary viewing target channel from a plurality of receivable channels under the control of the control unit 21.

  The display processing unit 22 outputs the video of the program of the viewing target channel selected by the TV tuner 23 to the display 209. If the recording device 2 is a television receiver (TV), the display 209 is provided in the TV. If the recording device 2 is a video recorder, the video of the program is sent to the TV, and the video is displayed on the display 209 in the TV.

  The communication processing unit 25 performs communication with an external device such as the tablet computer 1 via a home network, for example, via a wireless network such as a wireless LAN. The communication processing unit 25 authenticates an external device to be communicated and establishes a connection with the authenticated external device. The communication processing unit 25 receives, for example, a recording reservation request for a broadcast program or a dubbing reservation request for a recorded program from the tablet computer 1, and transmits video data of the dubbed reservation program to the tablet computer 1. To do.

  The reservation processing unit 26 executes processing related to recording reservation for recording an arbitrary broadcast program and dubbing reservation for dubbing a recorded program (or recorded program) to an external device. The reservation processing unit 26 includes a reservation management unit 261, an estimation unit 262, an execution control unit 263, and the like.

  The reservation management unit 261 reserves recording of an arbitrary program to be broadcast. This recording reservation may be set according to a user operation on the recording device 2 (for example, a user operation using a remote controller), or a linked portable device (for example, received via the communication processing unit 25). It may be set according to a user operation on the tablet computer 1).

  When a recording reservation is requested by the tablet computer 1, the reservation management unit 261 receives program information indicating a program reserved for recording from the tablet computer 1 via the communication processing unit 25. Based on the received program information, the reservation management unit 261 stores reservation information indicating a recording reservation in the storage device 29 or the like. This reservation information will be described later with reference to FIG.

  The reservation management unit 261 uses the stored reservation information to make a recording reservation in the TV tuner 23 and the recording processing unit 24 when, for example, a predetermined time (for example, several minutes) before the recording reservation date and time comes. A process for recording the recorded program is requested.

  In response to a request from the reservation management unit 261, the TV tuner 23 selects a channel (recording target channel) on which a program reserved for recording is broadcast from a plurality of channels.

  The recording processing unit 24 records the video of the program of the recording target channel selected by the TV tuner 23. For example, the recording processing unit 24 performs a predetermined encryption process (local encryption) on the video data of the program of the recording target channel, and stores the encrypted video data in a storage device 29 such as an HDD.

  The reservation management unit 261 can also reserve dubbing of a recorded program. This dubbing reservation may be set according to a user operation on the recording device 2 (for example, a user operation using a remote controller), or a linked portable device (for example, received via the communication processing unit 25). It may be set according to a user operation on the tablet computer 1). Also, a dubbing reservation for a certain program can be set together with a recording reservation for that program.

  Hereinafter, a process when a dubbing reservation is requested by the tablet computer 1 will be described.

  When the tablet computer 1 requests dubbing reservation, the reservation management unit 261, the estimation unit 262, and the execution control unit 263 receive program information indicating a program reserved for dubbing from the tablet computer 1 via the communication processing unit 25. And the power information of the tablet computer 1 are received. As described above, the power information includes, for example, information indicating whether the power for driving the tablet computer 1 is supplied from the external AC power source or the battery 109, and the program information from the recording device 2 to the tablet computer 1. It includes information indicating the power consumption of the tablet computer 1 when dubbing video data. When the power driving the tablet computer 1 is supplied from the battery 109, the power information further includes battery remaining information indicating the remaining amount of power held in the battery 109. Based on the received program information, the reservation management unit 261 reads an entry corresponding to the program to be dubbed reserved from the reservation information stored in the storage device 29, and describes information related to the dubbing reservation in the entry.

  FIG. 2 shows a configuration example of reservation information used by the recording device 2. The reservation information includes a plurality of entries corresponding to a plurality of programs (contents) reserved for recording. Each entry includes, for example, a channel, program name, start date / time, end date / time, data size, dubbing device ID, and dubbing reservation date / time. In an entry corresponding to a program reserved for recording, “channel” indicates a channel on which the program is broadcast. “Program name” indicates the name (title) of the program. “Start date and time” indicates the date and time when the program starts broadcasting. “End date and time” indicates the date and time when broadcast of the program ends. “Data size” indicates the data size of video data (video content data) of the program. In the “data size”, for example, after the recording of the program is completed, the data size (data amount) of the video data of the program stored in the storage device 29 is set.

  “Dubbing device ID” indicates identification information given to a dubbing destination device when dubbing of the program is reserved. For example, when it is reserved that the program is dubbed to the tablet computer (portable device) 1, identification information given to the tablet computer 1 is set in the “dubbing device ID”. “Dubbing reservation date and time” indicates the date and time when video data of the program is dubbed to the tablet computer 1. For example, a date and time designated by the user may be set as the “dubbing reservation date and time”, or a predetermined date and time after the recording of the program is completed may be automatically set. As this predetermined date and time, for example, a predetermined time after the broadcast end date and time (for example, the time when the user is asleep) is used several minutes after the broadcast end date and time.

  Information similar to the reservation information may be stored in the storage device 19 of the tablet computer 1 and used by the tablet computer 1.

  Next, the estimation unit 262 uses the power information received from the tablet computer 1 to determine whether or not the tablet computer 1 is driven by the power supplied from the battery 109. When the tablet computer 1 is driven by the power supplied from the battery 109, the estimation unit 262 uses the power information to copy the reserved program video data from the recording device 2 to the tablet computer 1. The power consumption amount of the tablet computer 1 required for completing the execution of the (first service) (that is, the power consumption amount of the tablet computer 1 from the start to the completion of the dubbing process) is estimated.

  More specifically, the estimation unit 262 estimates the size of video data of a program reserved for dubbing based on the recording quality of the program, the recording time (broadcast time length), and the like. The estimation unit 262 completes the dubbing process based on the estimated data size, the communication speed between the recording device 2 and the tablet computer 1, and the power consumption of the tablet computer 1 during the dubbing process. The power consumption of the tablet computer 1 required for this is estimated. The communication speed between the recording device 2 and the tablet computer 1 and the power consumption of the tablet computer 1 during the dubbing process are acquired by dubbing device information stored in the storage device 29, for example.

  FIG. 3 shows a configuration example of dubbing device information used by the recording device 2. The dubbing device information includes one or more entries corresponding to one or more external devices (dubbing devices) to which the recorded program is dubbed. This dubbing device is, for example, a tablet computer 1. Each entry includes, for example, a dubbing device ID, a device name, power consumption, and a communication speed. In an entry corresponding to a certain dubbing device, “dubbing device ID” indicates identification information given to the dubbing device. “Device name” indicates the name assigned to the dubbing device. “Power consumption” indicates the power consumption (W) of the dubbing device when video data is dubbed (transferred) from the recording device 2 to the dubbing device. “Communication speed” is the data transfer speed on the communication connection (wireless communication connection) established between the recording device 2 and the dubbing device when video data is dubbed from the recording device 2 to the dubbing device. Show.

  This dubbing device information is generated using, for example, a value acquired in advance from an external device (tablet computer 1 or the like). In addition, the dubbing device information accumulates the history of past dubbing processing executed with the external device (power consumption, communication speed, etc. during past dubbing processing), and the value indicated in the accumulated history It may be generated using an average value.

  Based on the power consumption estimated by the estimation unit 262 and the battery remaining amount information received from the tablet computer 1, the execution control unit 263 has an estimated power consumption equal to or greater than the remaining amount of the battery 109 of the tablet computer 1. It is determined whether or not. When the estimated power consumption is equal to or greater than the remaining amount of the battery 109 of the tablet computer 1, the execution control unit 263 confirms that the remaining amount of the battery 109 is not sufficient to the tablet computer 1 via the communication processing unit 25. Notice. Specifically, for example, the execution control unit 263 requests the tablet computer 1 to display a warning indicating that the remaining amount of the battery 109 is not sufficient.

  In the tablet computer 1, in response to this request, the display processing unit 12 displays a warning screen (message) indicating that the remaining amount of the battery 109 is not sufficient. Note that the tablet computer 1 may notify the user that the remaining amount of the battery 109 is not sufficient by not only the warning screen but also a pop-up, an alert sound, or the like. Further, this warning may be notified through the display 209 of the recording device 2, a speaker, or the like.

  Next, processing when video data of a program reserved for dubbing is dubbed (transferred) from the recording device 2 to the tablet computer 1 will be described. The reservation management unit 261, the estimation unit 262, and the execution control unit 263 establish a connection with the tablet computer (external device) 10 that can be driven by the power supplied from the battery 109, and the tablet computer 1. When execution of the first service (for example, dubbing service) is requested through the connection, the first service is used by using the content of the first service and the amount of power charged in the battery 109 of the tablet computer 1. It controls whether to execute or execute a second service different from the first service. For example, when the tablet computer 1 is driven by power supplied from an external power source, the execution control unit 263 executes the first service, and when the tablet computer 1 is driven by power supplied from the battery 109, One of the first service and the second service is executed.

  Specifically, the reservation management unit 261 instructs the recording processing unit 24 and the estimation unit 262 to start processing for dubbing when a predetermined time (for example, several minutes) before the date and time when the dubbing reservation is made. Request. The recording processing unit 24 reads the video data corresponding to the program reserved for dubbing from the storage device 29, and decodes the read video data.

  The estimation unit 262 acquires current power information of the computer 1 from the tablet computer 1 via the communication processing unit 25. The contents of the power information are as described above. The estimation unit 262 estimates the power consumption of the tablet computer 1 required to complete the execution of the process of dubbing the video data of the reserved program from the recording device 2 to the tablet computer 1 using the power information. The estimation unit 262 determines, for example, the data size of recorded video data corresponding to the program, the communication speed between the recording device 2 and the tablet computer 1, and the power consumption of the tablet computer 1 during the dubbing process. Based on this, the power consumption of the tablet computer 1 required to complete the dubbing process is estimated.

  Next, the execution control unit 263 determines that the estimated power consumption amount is based on the estimated power consumption amount and the remaining battery amount information received from the tablet computer 1. It is determined whether or not it is less than the amount of power charged in the battery.

  The execution control unit 263 executes the first service for transferring the video data read by the recording processing unit 24 to the tablet computer 1 when the estimated power consumption is less than the remaining amount of the battery 109 of the tablet computer 1. To do. In the first service, the communication processing unit 25 transmits the video data read by the recording processing unit 24 to the tablet computer 1. The communication processing unit 25 performs encryption processing based on DTCP-IP (Digital Transmission Content Protection over Internet Protocol) or the like on the video data in order to protect the video data on the communication path, and the encrypted video data is converted into a tablet. You may transmit to the computer 1. In the tablet computer 1, the video data is received by the communication processing unit 16, and a predetermined encryption process (local encryption) is performed on the video data by the data management unit 18 and stored in the storage device 19.

  In addition, when the estimated power consumption is equal to or greater than the remaining amount of the battery 109 of the tablet computer 1, the execution control unit 263 has less than the remaining amount of the battery 109 for executing the first service. Is changed to the second service, and the second service is executed. This second service is, for example, a video data of a second data size that can be transferred within a time period driven by the remaining power of the battery 109, and the video data of the first data size read by the recording processing unit 24. This is a service for converting (transcoding) to video data and transferring the converted video data to the tablet computer 1. In this second service, the re-encoding processing unit 27 converts the video data read out by the recording processing unit 24 into video data of the second size, and the communication processing unit 25 converts the converted video data into a tablet. Send to computer 1 As described above, the communication processing unit 25 performs encryption processing based on DTCP-IP or the like on the video data in order to protect the video data on the communication path, and transmits the encrypted video data to the tablet computer 1. May be.

  In the second service, for example, after the tablet computer 1 is driven by power from an external power source, or the battery 109 of the tablet computer 1 is charged, the remaining amount of the battery 109 exceeds the estimated power consumption. A service for transferring video data read by the recording processing unit 24 to the tablet computer 1 later may be used. In other words, the execution control unit 263 starts the first service until the tablet computer 1 is driven by the power from the external power supply or until the remaining amount of the battery 109 of the tablet computer 1 exceeds the estimated power consumption. Control to wait.

  As described above, the recording device 2 that provides the video data makes a determination based on the power supply state of the tablet computer 1 (whether it is external power supply driving or battery driving, battery remaining power when battery driving, etc.). By doing so, services executed between devices can be flexibly controlled.

  Note that not only the tablet computer 1 but also the recording device 2 may be configured to be driven by the power from the battery 230. In that case, the recording device 2 executes processing based on the power supply state of the recording device 2 in the same manner as the processing based on the power supply state of the tablet computer 1 described above.

  For example, the estimation unit 262 uses the power information generated by the battery control unit 28 to estimate the power consumption of the recording device 2 required to complete the execution of the process of dubbing video data to the tablet computer 1. The execution control unit 263 determines whether or not the estimated power consumption is equal to or greater than the remaining amount of the battery 230 based on the estimated power consumption and the remaining amount of the battery 230. The execution control unit 263 displays a message indicating that the remaining battery level of the recording device 2 is not sufficient when the estimated power consumption is equal to or greater than the remaining battery level at the time of dubbing reservation, and starts the dubbing process. Sometimes, if the estimated power consumption is greater than or equal to the remaining amount of battery 230, the first service is changed to a second service whose power consumption for completing execution is less than the remaining amount of battery 109.

  Next, FIG. 4 shows an electronic program guide (EPG) screen 6 displayed by the display processing unit 12 of the tablet computer 1. The EPG screen 6 includes a plurality of items 61 indicating a plurality of programs arranged based on channels and broadcast times.

  The user performs an operation of selecting one item 62 of the plurality of items 61 (for example, an operation of touching the item 62 on the EPG screen 6 displayed on the touch screen display 17). It is possible to instruct recording reservation of a program corresponding to 62, or recording reservation and dubbing reservation of the program.

  When the operation of selecting one item 62 is performed, the tablet computer 1 displays a recording reservation / dubbing reservation screen 7 as shown in FIG.

  The recording reservation / dubbing reservation screen 7 includes, for example, a program information area 61, a dubbing check box 72, an OK button 73, a cancel button 74, and the like. In the program information area 61, program information (program name, broadcast date, channel, etc.) corresponding to the selected item 62 is displayed. The dubbing check box 72 is a check box for selecting whether or not to reserve to copy the video data of the program to the tablet computer 1 after the program is recorded. The OK button 73 is a button for determining a program recording reservation (and a dubbing reservation). The cancel button 74 is a button for canceling program recording reservation (and dubbing reservation).

  The recording reservation / dubbing reservation screen 7 may further include an input area for designating the date and time for dubbing.

  Also, as shown in FIG. 6, in the tablet computer 1, when the remaining amount of the battery 109 required to complete the process of dubbing the video data of the reserved program from the recording device 2 is insufficient, the warning screen 8 Is displayed. The warning screen 8 can prompt the user to connect the tablet computer 1 to an external AC power source.

  FIG. 7 shows a recorded program list screen 9 displayed by the tablet computer 1. The recorded program list screen 9 includes an item 91 corresponding to a program that has been recorded by the recording device 2. The user performs an operation of selecting one of the items 91 (for example, an operation of touching the item 92 on the recorded program list screen 9 displayed on the touch screen display 17). It is possible to instruct dubbing of a program corresponding to.

  The recorded program list screen 9 may include items corresponding to programs that have been scheduled for recording by the recording device 2. Thereby, the user can also instruct dubbing (dubbing reservation) of a program that has been reserved for recording.

  Next, the system configuration of the recording device 2 will be described with reference to FIG. In the following, it is assumed that the recording device 2 is realized as a digital television receiver.

  The recording device (digital television receiver) 2 includes a display (LCD) 209, a speaker 211, a remote control signal receiving unit 216, a tuner 203, a demodulator 204, a signal processing unit 205, an audio processing unit 210, a graphic processing unit 206, and an image. A processing unit 208, an OSD signal generation unit 207, a control unit 21, a LAN controller 218, a power control unit 219, and the like are provided.

  The control unit 21 controls the operation of each unit in the recording device 2. The control unit 21 includes a CPU 215, ROM 212, RAM 213, and nonvolatile memory 214. The CPU 215 executes various programs loaded from the ROM 212 or the nonvolatile memory 214 to the RAM 213. These programs include a control program for controlling the recording device 2 and an application program. The application program includes, for example, a recording reservation application program 213A. The recording processing unit 24, the communication processing unit 25, the reservation processing unit 26, and the re-encoding processing unit 27 described in FIG. 1 may be realized by the recording reservation application program 213A.

  The broadcast signal receiving antenna 202 receives a digital television broadcast signal. The broadcast signal receiving antenna 202 outputs the received digital television broadcast signal to the tuner 23 via the input terminal. The tuner 23 selects a broadcast signal of an arbitrary channel from this broadcast signal. The tuner 23 outputs the selected broadcast signal to a demodulator 204 (for example, an OFDM (Orthogonal Frequency Division Multiplexing) demodulator, a PSK (Phase Shift Keying) demodulator, etc.). The demodulator 204 demodulates the broadcast signal selected by the tuner 23 into a digital video signal and audio signal. The demodulator 204 outputs the demodulated digital video signal and audio signal to the signal processing unit 205.

  The signal processing unit 205 performs predetermined digital signal processing on the digital video signal and audio signal output from the demodulator 204. The signal processing unit 205 outputs the video signal and audio signal subjected to predetermined digital signal processing to the graphic processing unit 206 and the audio processing unit 210.

  The audio processing unit 210 converts the input digital audio signal into an analog audio signal that can be reproduced by the speaker 211. The audio processing unit 210 outputs this analog audio signal to the speaker 211. The speaker 211 reproduces sound based on the input analog sound signal.

  The graphic processing unit 206 superimposes an OSD signal such as a menu generated by an OSD (On Screen Display) signal generation unit 207 on the digital video signal output from the signal processing unit 205. The graphic processing unit 206 outputs a video signal on which the OSD signal is superimposed to the video processing unit 208. Further, the graphic processing unit 206 may output either the video signal that is the output of the signal processing unit 205 or the OSD signal that is the output of the OSD signal generation unit 207.

  The video processing unit 208 performs predetermined processing on the input digital video signal. This predetermined process is, for example, a sharpening process for sharpening an input digital video signal. The video processing unit 208 converts the digital video signal that has been subjected to predetermined processing into an analog video signal that can be displayed on the display 209. The video processing unit 208 outputs this analog video signal to the display 209. The display 209 displays video based on the input analog video signal.

  The LAN controller 218 is a device configured to execute, for example, wireless communication based on the IEEE 802.11 standard, wired communication based on the Ethernet (registered trademark) standard, or the like.

  The remote control signal receiving unit 216 receives (receives) a remote control signal (for example, an infrared signal) transmitted by the remote controller 217. The remote control signal receiving unit 216 outputs the received remote control signal to the control unit 21.

  The power control unit 219 is a power management controller for executing power management of the recording device 2. The power control unit 219 has a function of powering on and powering off the recording device 2 in accordance with the operation of the power switch by the user. The power control unit 219 generates power (operating power) to be supplied to each component using power from the AC adapter 220 connected to the recording device 2 as an external power source. The recording device 2 may be supplied with power from the battery 230. The power supply control unit 219 generates power to be supplied to each component in the recording device 2 using the power from the battery 230. The battery control unit 28 described in FIG. 1 may be realized by the power supply control unit 219.

  Next, FIG. 9 is a diagram illustrating a system configuration of the tablet computer (mobile device) 1.

  As shown in FIG. 9, the tablet computer 1 includes a CPU 101, a system controller 102, a main memory 103, a graphics controller 104, a BIOS-ROM 105, a nonvolatile memory 106, a wireless communication device 107, an embedded controller (EC) 108, and the like. .

  The CPU 101 is a processor that controls the operation of various modules in the tablet computer 1. The CPU 101 executes various software loaded into the main memory 103 from the nonvolatile memory 106 that is a storage device. The software includes an operating system (OS) 103A and various application programs. The application program includes a recording reservation application program 103B. The reservation processing unit 14 and the data management unit 18 described in FIG. 1 may be realized by the recording reservation application program 103B.

  The CPU 101 also executes a basic input / output system (BIOS) stored in the BIOS-ROM 105. The BIOS is a program for hardware control.

  The system controller 102 is a device that connects the local bus of the CPU 101 and various components. The system controller 102 also includes a memory controller that controls access to the main memory 103. The system controller 102 also has a function of executing communication with the graphics controller 104 via a PCI Express standard serial bus or the like.

  The graphics controller 104 is a display controller that controls the LCD 17 </ b> A used as a display monitor of the tablet computer 1. A display signal generated by the graphics controller 104 is sent to the LCD 17A. The LCD 17A displays a screen image based on the display signal. A touch panel 17B is disposed on the LCD 17A. The touch panel 17B is, for example, an electrostatic capacitance type pointing device for performing input on the screen of the LCD 17A. The touch position on the screen where the finger is touched and the movement of the touch position are detected by the touch panel 17B.

  The wireless communication device 107 is a device configured to execute wireless communication such as IEEE 802.11 standard wireless communication (wireless LAN) or 3G mobile communication. The EC 108 is a one-chip microcomputer including an embedded controller for power management. The EC 108 has a function of powering on or off the tablet computer 1 in accordance with the operation of the power button by the user. The EC 108 manages the power supplied from the external power supply via the AC adapter 150, the power supplied from the battery 109, and the power charged in the battery. The battery control unit 109 described with reference to FIG. 1 may be realized by the EC 108.

  Next, an example of a dubbing reservation processing procedure when a dubbing reservation is requested by the tablet computer (external device) 1 will be described with reference to the flowchart of FIG. In the following, it is assumed that the recording device 2 is driven by the power supplied from the external AC power source, and the tablet computer 1 is driven by either the power supplied from the battery 109 or the power supplied from the external AC power source. To do.

  First, the reservation processing unit 14 of the tablet computer 1 receives electronic program guide (EPG) data from a server on the network (Internet) via the communication processing unit 16 (block B101). In addition, the reservation processing unit 14 requests transmission of data indicating a list of recording reservation programs already registered in the recording device 2 and a list of dubbing reservation programs via the communication processing unit 16 (block B102).

  The reservation management unit 261 of the recording device 2 transmits data indicating a list of scheduled recording programs and a list of scheduled dubbing programs to the tablet computer 1 via the communication processing unit 25 in response to a request from the tablet computer 1 ( Block B103). Then, the reservation processing unit 14 of the tablet computer 1 receives the reserved program data indicating the list of recording reservation programs and the list of dubbing reservation programs transmitted from the recording device 2 via the communication processing unit 16 (block). B104).

  Next, the display processing unit 12 displays the electronic program guide 61 on the screen of the touch screen display 17 using the received EPG data (block B105). The user performs an operation for selecting a program to be reserved for recording and dubbing on the electronic program guide 61 displayed on the touch screen display 17. When the input processing unit 13 detects an operation for selecting a recording reservation and a dubbing reservation program, the reservation processing unit 14 selects a recording reservation and a program from the program shown in the program table 61 based on the operation. A program to be reserved for dubbing is selected (block B106). Then, the reservation processing unit 14 determines whether or not the selected program has already been reserved for recording using the reserved program data transmitted from the recording device 2 (block B107).

  If the selected program is already reserved (YES in block B107), another program to be recorded and dubbed is selected by returning to block B106. Thereby, it can avoid that a reservation overlaps. The reservation processing unit 14 uses the reserved program data to determine whether another program broadcast in a time zone overlapping with the time zone in which the selected program is broadcast has already been reserved. May be. If the other program is already reserved, by not accepting the reservation of the selected program, for example, the recording device 2 sets a number of recording reservations that cannot be executed simultaneously (recording reservation conflicts). ) Can be avoided.

  On the other hand, if the selected program has not been reserved yet (NO in block B107), the reservation processing unit 14 transmits the program information indicating the selected program, the power information of the tablet computer 1 and the power information via the communication processing unit 16. Is transmitted to the recording device 2 (block B108).

  The communication processing unit 25 of the recording device 2 receives the program information indicating the selected program and the power information of the tablet computer 1 transmitted from the tablet computer 1 (block B109). Then, the reservation management unit 261 reserves recording and dubbing of the program selected on the tablet computer 1 based on the received program information (block B110). By this reservation, for example, recording a program at the broadcast date and time, and after recording (storing video data of the program) is completed, starting dubbing (transfer) of video data from the recording device 2 to the tablet computer 1 Are set in the recording device 2.

  Next, the estimation unit 262 determines whether or not the tablet computer 1 is driven by the power supplied from the battery 109 using the received power information (block B111). When the tablet computer 1 is not driven with the power supplied from the battery 109 (that is, when it is driven with the power supplied from the external AC power source) (NO in block B111), the process is terminated.

  When the tablet computer 1 is driven by the power supplied from the battery 109 (YES in block B111), the estimation unit 262 uses the received power information to obtain the video data of the reserved program from the recording device 2. The power consumption of the tablet computer 1 required to complete the execution of the process of dubbing to the tablet computer 1 is estimated (block B112). The estimation unit 262 estimates, for example, the size of video data of a reserved program, the estimated data size, the communication speed between the recording device 2 and the tablet computer 1, and the tablet computer 1 during the dubbing process. Based on the power consumption of the tablet computer 1, the power consumption of the tablet computer 1 required to complete the dubbing process is estimated.

  Then, the execution control unit 263 determines whether or not the estimated power consumption of the tablet computer 1 is less than the remaining amount of the battery 109 of the tablet computer 1 (block B113). If the power consumption of the tablet computer 1 is less than the remaining amount of the battery 109 (YES in block B113), the process ends.

  When the power consumption of the tablet computer 1 is equal to or greater than the remaining amount of the battery 109 (NO in block B113), the execution control unit 263 has a sufficient remaining amount of the battery 109 in the tablet computer 1 via the communication processing unit 25. Is displayed (block B114).

  The communication processing unit 16 of the tablet computer 1 receives a warning display request from the recording device 2, and the display processing unit 12 displays a warning screen 8 indicating that the remaining amount of the battery 109 is not sufficient in response to this request. It is displayed (block B115).

  Further, another example of the processing procedure when a dubbing reservation is requested by the tablet computer 1 will be described with reference to the flowchart of FIG. Here, it is assumed that the tablet computer 1 requests dubbing of a recorded program or dubbing of a program that has been scheduled to be recorded (dubbing reservation).

  First, the reservation processing unit 14 of the tablet computer 1 requests transmission of data indicating a list of scheduled recording programs registered in the recording device 2 via the communication processing unit 16 (block B201). The list of scheduled recording programs may include programs that have already been recorded (recorded programs) in accordance with the scheduled recording.

  The reservation management unit 261 of the recording device 2 transmits data indicating a list of scheduled recording programs to the tablet computer 1 via the communication processing unit 25 in response to a request from the tablet computer 1 (block B202). The communication processing unit 16 of the tablet computer 1 receives reserved program data indicating a list of scheduled recording programs transmitted from the recording device 2, and the display processing unit 12 uses the received reserved program data. A list 9 of recorded programs is displayed (block B203). The user performs an operation for selecting a program to be dubbed (or reserved for dubbing) on the recorded program list 9 displayed on the touch screen display 17. When the input processing unit 13 detects an operation for selecting a program to be dubbed (dubbing reservation), the reservation processing unit 14 performs dubbing from the programs shown in the recorded program list 9 based on the operation. A program to be reserved (dubbing reservation) is selected (block B204).

  Then, the communication processing unit 16 transmits the program information indicating the selected program and the power information of the tablet computer 1 to the recording device 2 (block B205).

  The communication processing unit 25 of the recording device 2 receives the program information indicating the selected program and the power information of the tablet computer 1 transmitted from the tablet computer 1 (block B206). Then, the reservation management unit 261 reserves dubbing of the program selected on the tablet computer 1 based on the received program information (block B207). For example, the reservation management unit 261 reads an entry corresponding to the selected program from the reservation information stored in the storage device 29, sets the ID of the tablet computer 1 in the “dubbing device ID” of the entry, In “Reservation Date / Time”, a date / time designated by the user or a predetermined date / time after the broadcast end date / time is set. Thereby, for example, after the recording of the selected program (storing of the video data of the program) is completed, starting the dubbing (transfer) of the video data from the recording device 2 to the tablet computer 1 may be performed on the recording device 2. Is set. If the selected program is a recorded program, for example, dubbing of video data may be started after the dubbing reservation process is completed.

  Next, the estimation unit 262 determines whether or not the tablet computer 1 is driven by the power supplied from the battery 109 using the received power information (block B208). When the tablet computer 1 is not driven with the power supplied from the battery 109 (that is, when it is driven with the power supplied from the external AC power source) (NO in block B208), the process is terminated.

  When the tablet computer 1 is driven by the power supplied from the battery 109 (YES in block B208), the estimation unit 262 uses the received power information to obtain the video data of the reserved program from the recording device 2. The power consumption amount of the tablet computer 1 required for completing the execution of the process of dubbing to the tablet computer 1 is estimated (block B209). The estimation unit 262 estimates, for example, the size of video data of a reserved program, the estimated data size, the communication speed between the recording device 2 and the tablet computer 1, and the tablet computer 1 during the dubbing process. Based on the power consumption of the tablet computer 1, the power consumption of the tablet computer 1 required to complete the dubbing process is estimated.

  Then, the estimation unit 262 determines whether or not the estimated power consumption of the tablet computer 1 is less than the remaining amount of the battery 109 of the tablet computer 1 (block B210). When the power consumption of the tablet computer 1 is less than the remaining amount of the battery 109 (YES in block B210), the process ends.

  When the power consumption of the tablet computer 1 is equal to or greater than the remaining amount of the battery 109 (NO in block B210), the execution control unit 263 has a sufficient remaining amount of the battery 109 in the tablet computer 1 via the communication processing unit 25. Is displayed (block B211).

  The communication processing unit 16 of the tablet computer 1 receives a warning display request from the recording device 2, and the display processing unit 12 displays a warning screen 8 indicating that the remaining amount of the battery 109 is not sufficient in response to this request. It is displayed (block B212).

  In the above-described example, the recording device 2 is driven with power supplied from the external AC power source, and the tablet computer 1 is driven with either power supplied from the battery 109 or power supplied from the external AC power source. However, the recording device 2 may be driven by either power supplied from the battery 230 or power supplied from an external AC power source.

  In that case, as shown in the flowchart of FIG. 12, dubbing reservation processing is performed in consideration of the power supply states of both the recording device 2 and the tablet computer 1. The procedure shown in the flowchart of FIG. 12 is performed after the processing from block B201 to block B207 shown in the flowchart of FIG.

  The estimation unit 262 of the recording device 2 determines whether or not the recording device 2 is driven by the power supplied from the battery 230 (block B301). When the recording device 2 is not driven with the power supplied from the battery 230 (that is, when it is driven with the power supplied from the external AC power source) (NO in block B301), the process proceeds to block B306.

  When the recording device 2 is driven by the power supplied from the battery 230 (YES in block B301), the estimation unit 262 executes the process of dubbing the video data of the reserved program from the recording device 2 to the tablet computer 1. The power consumption of the recording device 2 required to complete the process is estimated (block B302). The estimation unit 262 estimates, for example, the size of video data of a reserved program, the estimated data size, the communication speed between the recording device 2 and the tablet computer 1, and the recording device 2 during the dubbing process. The power consumption amount of the recording device 2 required to complete the execution of the dubbing process is estimated based on the power consumption.

  Then, the execution control unit 263 determines whether or not the estimated power consumption of the recording device 2 is less than the remaining amount of the battery 230 of the recording device 2 (block B303). When the power consumption of the recording device 2 is less than the remaining amount of the battery 230 (YES in block B303), the process proceeds to block B306.

  When the power consumption of the recording device 2 is equal to or greater than the remaining amount of the battery 230 (NO in block B303), the execution control unit 263 connects the tablet 230 to the tablet computer 1 via the communication processing unit 25. A display of a warning indicating that the remaining amount is not sufficient is requested (block B304).

  The communication processing unit 16 of the tablet computer 1 receives the warning display request from the recording device 2, and the display processing unit 12 indicates that the remaining amount of the battery 230 of the recording device 2 is not sufficient in response to this request. A warning screen is displayed (block B305), and the process proceeds to block B306.

  Next, the estimation unit 262 of the recording device 2 determines whether or not the tablet computer 1 is driven by the power supplied from the battery 109 using the received power information (block B306). When the tablet computer 1 is not driven with the power supplied from the battery 109 (that is, when it is driven with the power supplied from the external AC power source) (NO in block B306), the process is terminated.

  When the tablet computer 1 is driven by the power supplied from the battery 109 (YES in block B306), the estimation unit 262 uses the received power information to obtain the video data of the reserved program from the recording device 2. The power consumption of the tablet computer 1 required to complete the execution of the process of dubbing to the tablet computer 1 is estimated (block B307). The estimation unit 262 estimates, for example, the size of video data of a reserved program, the estimated data size, the communication speed between the recording device 2 and the tablet computer 1, and the tablet computer 1 during the dubbing process. Based on the power consumption of the tablet computer 1, the power consumption of the tablet computer 1 required to complete the dubbing process is estimated.

  Then, the execution control unit 263 determines whether or not the estimated power consumption of the tablet computer 1 is less than the remaining amount of the battery 109 of the tablet computer 1 (block B308). If the power consumption of the tablet computer 1 is less than the remaining amount of the battery 109 (YES in block B308), the process ends.

  When the power consumption of the tablet computer 1 is equal to or greater than the remaining amount of the battery 109 (NO in block B308), the execution control unit 263 has a sufficient remaining amount of the battery 109 in the tablet computer 1 via the communication processing unit 25. Display of a warning indicating that it is not (Block B309).

  The communication processing unit 16 of the tablet computer 1 receives the warning display request from the recording device 2, and the display processing unit 12 indicates that the remaining amount of the battery 109 of the tablet computer 1 is not sufficient in response to this request. The warning screen 8 is displayed (block B310).

  Furthermore, still another example of the procedure of the dubbing reservation process when a dubbing reservation is requested by the tablet computer 1 will be described with reference to the flowchart of FIG. In this example, not the recording device 2 but the tablet computer 1 determines the power supply state (remaining battery level) of the tablet computer 1. Here, it is assumed that the recording device 2 is driven by the power supplied from the external AC power source, and the tablet computer 1 is driven by either the power supplied from the battery 109 or the power supplied from the external AC power source. To do.

  First, the reservation processing unit 14 of the tablet computer 1 requests transmission of data indicating a list of scheduled recording programs registered in the recording device 2 via the communication processing unit 16 (block B401). The list of scheduled recording programs may include programs that have already been recorded (recorded programs) in accordance with the scheduled recording.

  The reservation management unit 261 of the recording device 2 transmits data indicating a list of scheduled recording programs to the tablet computer 1 via the communication processing unit 25 in response to a request from the tablet computer 1 (block B402). The communication processing unit 16 of the tablet computer 1 receives reserved program data indicating a list of scheduled recording programs transmitted from the recording device 2, and the display processing unit 12 uses the received reserved program data. A list 9 of recorded programs is displayed (block B403). The user performs an operation for selecting a program to be dubbed (or reserved for dubbing) on the recorded program list 9 displayed on the touch screen display 17. When the input processing unit 13 detects an operation for selecting a program to be dubbed (dubbing reservation), the reservation processing unit 14 performs dubbing from the programs shown in the recorded program list 9 based on the operation. A program to be reserved (dubbing reservation) is selected (block B404).

  Then, the communication processing unit 16 transmits program information indicating the selected program to the recording device 2 (block B405).

  The communication processing unit 25 of the recording device 2 receives the program information indicating the selected program transmitted from the tablet computer 1 (block B406). The reservation manager 261 reserves dubbing of the program selected on the tablet computer 1 based on the received program information (block B407). By this reservation, for example, after the recording of the selected program (saving of the video data of the program) is completed, starting the dubbing (transfer) of the video data from the recording device 2 to the tablet computer 1 is possible. Set to If the selected program is a recorded program, for example, dubbing of video data may be started after the dubbing reservation process is completed.

  Further, the reservation processing unit 14 of the tablet computer 1 determines whether or not the tablet computer 1 is driven by the electric power supplied from the battery 109 (block B408). When the tablet computer 1 is not driven with the power supplied from the battery 109 (that is, when it is driven with the power supplied from the external AC power source) (NO in block B408), the process is terminated.

  When the tablet computer 1 is driven by the power supplied from the battery 109 (YES in block B408), the reservation processing unit 14 performs processing for dubbing video data of the selected program from the recording device 2 to the tablet computer 1. The power consumption amount of the tablet computer 1 required to complete the execution is estimated (block B409). For example, the reservation processing unit 14 estimates the size of the video data of the selected program, the estimated data size, the communication speed between the recording device 2 and the tablet computer 1, and the tablet computer during the dubbing process Based on the power consumption of 1, the power consumption of the tablet computer 1 required to complete the execution of the dubbing process is estimated.

  Then, the reservation processing unit 14 determines whether or not the estimated power consumption of the tablet computer 1 is less than the remaining amount of the battery 109 of the tablet computer 1 (block B410). If the power consumption of the tablet computer 1 is less than the remaining amount of the battery 109 (YES in block B410), the process ends.

  When the power consumption of the tablet computer 1 is equal to or greater than the remaining amount of the battery 109 (NO in block B410), the display processing unit 12 displays a warning screen 8 indicating that the remaining amount of the battery 109 is not sufficient (block B411). ).

  Next, an example of the procedure of the dubbing process when video data is dubbed to the tablet computer 1 will be described with reference to the flowchart of FIG. In the following, it is assumed that the recording device 2 is driven by the power supplied from the external AC power source, and the tablet computer 1 is driven by either the power supplied from the battery 109 or the power supplied from the external AC power source. To do.

  First, the reservation management unit 261 of the recording device 2 determines whether or not the current date and time is the date and time when dubbing was reserved based on the reservation information stored in the storage device 29 (block B501). For example, the reservation management unit 261 uses a timer provided in the recording device 2 to determine whether or not it is a date and time when dubbing is reserved. If it is not the date and time when dubbing was reserved (NO in block B501), the process returns to block B501 and it is determined again whether or not the current date and time is the date and time when dubbing was reserved.

  If it is the date and time when dubbing was reserved (YES in block B501), the reservation management unit 261 determines whether or not the program reserved for dubbing is recorded (block B502). For example, the reservation management unit 261 determines whether video data corresponding to a program reserved for dubbing is stored in the storage device 29. When the program is not recorded (NO in block B502), the communication processing unit 25 notifies the tablet computer 1 that the recording of the program has failed (block B503). The communication processing unit 16 of the tablet computer 1 receives the notification from the recording device 2, and the display processing unit 12 displays a screen indicating that the program recording has failed in response to the received notification ( Block B504).

  On the other hand, when the program is recorded (YES in block B502), the estimation unit 262 requests the tablet computer 1 to transmit the current power information via the communication processing unit 25 (block B505).

  The reservation processing unit 14 of the tablet computer 1 transmits the power information of the tablet computer 1 to the recording device 2 via the communication processing unit 16 in response to a request from the recording device 2 (block B506). This power information is generated by the battery control unit 15. For example, information indicating whether the power for driving the tablet computer 1 is supplied from the external AC power source or the battery 109, and the tablet computer 1 from the recording device 2. Includes information indicating the power consumption of the tablet computer 1 when dubbing program video data. When the power driving the tablet computer 1 is supplied from the battery 109, the power information further includes battery remaining information indicating the remaining amount of power held in the battery 109.

  The communication processing unit 25 of the recording device 2 receives the power information transmitted from the tablet computer 1 (block B507). And the estimation part 262 determines whether the tablet computer 1 is driven with the electric power supplied from the battery 109 using the received electric power information (block B508). When the tablet computer 1 is not driven with the power supplied from the battery 109 (that is, when it is driven with the power supplied from the external AC power source) (NO in block B508), the communication processing unit 25 stores the storage device The video data of the program reserved for dubbing read from 29 is transmitted to the tablet computer 1 (block B513).

  When the tablet computer 1 is driven by the power supplied from the battery 109 (YES in block B508), the estimation unit 262 uses the received power information to obtain the video data of the reserved program from the recording device 2. The amount of power consumption of the tablet computer 1 required to complete the execution of the dubbing process on the tablet computer 1 is estimated (block B509). The estimation unit 262, for example, based on the data size of the video data of the reserved program, the communication speed between the recording device 2 and the tablet computer 1, and the power consumption of the tablet computer 1 during the dubbing process, The power consumption of the tablet computer 1 required to complete the execution of the dubbing process is estimated.

  Then, the execution control unit 263 determines whether or not the estimated power consumption of the tablet computer 1 is less than the remaining amount of the battery 109 of the tablet computer 1 (block B510). When the power consumption of the tablet computer 1 is less than the remaining amount of the battery 109 (YES in block B510), the execution control unit 263 is reserved for dubbing read from the storage device 29 via the communication processing unit 25. The video data of the selected program is transmitted to the tablet computer 1 (block B513).

  When the power consumption of the tablet computer 1 is equal to or greater than the remaining amount of the battery 109 (NO in block B510), the execution control unit 263 can dubb (transfer) to the tablet computer 1 within the remaining amount of the battery 109 of the tablet computer 1. A correct data size is calculated (block B511). Then, the re-encoding processing unit 27 transcodes the video data of the program reserved for dubbing read from the storage device 29 to the calculated data size (below the calculated data size) (block B512). ). Then, the communication processing unit 25 transmits the transcoded video data to the tablet computer 1 (block B513).

  The communication processing unit 16 of the tablet computer 1 receives the video data transmitted from the recording device 2, and the data management unit 18 stores the received video data in the storage device 19 (block B514).

  In the above-described example, the recording device 2 is driven with power supplied from the external AC power source, and the tablet computer 1 is driven with either power supplied from the battery 109 or power supplied from the external AC power source. However, the recording device 2 may be driven by either the power supplied from the battery 109 or the power supplied from the external AC power source.

  In that case, as shown in the flowchart of FIG. 15, dubbing processing is performed in consideration of the power supply states of both the recording device 2 and the tablet computer 1. The procedure shown in the flowchart of FIG. 15 is performed after the processing from block B501 to block B507 shown in the flowchart of FIG.

  The estimation unit 262 of the recording device 2 determines whether or not the recording device 2 is driven by the power supplied from the battery 230 (block B701). When the recording device 2 is driven by the power supplied from the battery 230 (YES in block B701), the estimation unit 262 executes a process of dubbing video data of the reserved program from the recording device 2 to the tablet computer 1. The power consumption of the recording device 2 required to complete the process is estimated (block B702). The estimation unit 262, for example, based on the data size of the video data of the reserved program, the communication speed between the recording device 2 and the tablet computer 1, and the power consumption of the recording device 2 during the dubbing process, The power consumption amount of the recording device 2 required to complete the execution of the dubbing process is estimated.

  Then, the execution control unit 263 determines whether or not the estimated power consumption of the recording device 2 is less than the remaining amount of the battery 230 of the recording device 2 (block B703). When the power consumption of the recording device 2 is equal to or greater than the remaining amount of the battery 230 (NO in block B703), the execution control unit 263 can dubb (transfer) to the tablet computer 1 within the remaining amount of the battery 230 of the recording device 2. The first data size is calculated (block B704).

  Next, the estimation unit 262 determines whether or not the tablet computer 1 is driven by the power supplied from the battery 109 using the power information received from the tablet computer 1 (block B705). When the tablet computer 1 is not driven with the power supplied from the battery 109 (that is, when it is driven with the power supplied from the external AC power source) (NO in block B705), the re-encoding processing unit 27 The video data of the program reserved for dubbing read from the storage device 29 is transcoded to the first data size (below the first data size) (block B711). Then, the communication processing unit 25 transmits the transcoded video data to the tablet computer 1 (block B717).

  When the tablet computer 1 is driven by the power supplied from the battery 109 (YES in block B705), the estimation unit 262 uses the received power information to obtain the video data of the reserved program from the recording device 2. The power consumption amount of the tablet computer 1 required to complete the execution of the dubbing process on the tablet computer 1 is estimated (block B706). The estimation unit 262, for example, based on the data size of the video data of the reserved program, the communication speed between the recording device 2 and the tablet computer 1, and the power consumption of the tablet computer 1 during the dubbing process, The power consumption of the tablet computer 1 required to complete the execution of the dubbing process is estimated.

  Then, the execution control unit 263 determines whether or not the estimated power consumption of the tablet computer 1 is less than the remaining amount of the battery 109 of the tablet computer 1 (block B707). When the power consumption of the tablet computer 1 is less than the remaining amount of the battery 109 (YES in block B707), the re-encoding processing unit 27 transcodes the video data of the dubbing reserved program to the first data size ( Block B711). Then, the communication processing unit 25 transmits the transcoded video data to the tablet computer 1 (block B717).

  When the power consumption of the tablet computer 1 is equal to or greater than the remaining amount of the battery 109 (NO in block B707), the execution control unit 263 can dubb (transfer) to the tablet computer 1 within the remaining amount of the battery 109 of the tablet computer 1. The second data size is calculated (block B708). Then, the execution control unit 263 determines whether the first data size that can be dubbed within the remaining battery level of the recording device 2 is smaller than the second data size that can be dubbed within the remaining battery level of the tablet computer 1. (Block B709). If the first data size is smaller than the second data size (YES in block B709), the re-encoding processing unit 27 converts the video data of the dubbing reserved program to the first data size (below the first data size). Code (Block B711). Then, the communication processing unit 25 transmits the transcoded video data to the tablet computer 1 (block B717).

  When the first data size is equal to or larger than the second data size (NO in block B709), the re-encoding processing unit 27 converts the video data of the dubbing reserved program to the second data size (below the second data size). Code (Block B710). Then, the communication processing unit 25 transmits the transcoded video data to the tablet computer 1 (block B717).

  Further, when the recording device 2 is not driven by the power supplied from the battery 230 (that is, when driven by the power supplied from the external AC power source) (NO in block B701), or the consumption of the recording device 2 When the amount of power is less than the remaining amount of the battery 230 (YES in block B703), the estimation unit 262 uses the power information received from the tablet computer 1 to drive the tablet computer 1 with the power supplied from the battery 109. It is determined whether it has been performed (block B712).

  When the tablet computer 1 is driven by the power supplied from the battery 109 (YES in block B712), the estimation unit 262 uses the received power information to obtain the video data of the reserved program from the recording device 2. The power consumption of the tablet computer 1 required to complete the execution of the process of dubbing to the tablet computer 1 is estimated (block B713). Then, the execution control unit 263 determines whether or not the estimated power consumption of the tablet computer 1 is less than the remaining amount of the battery 109 of the tablet computer 1 (block B714).

  When the power consumption of the tablet computer 1 is equal to or greater than the remaining amount of the battery 109 (NO in block B714), the execution control unit 263 can perform the second dubbing to the tablet computer 1 within the remaining amount of the battery 109 of the tablet computer 1. The data size is calculated (block B715). The re-encoding processing unit 27 transcodes the video data of the dubbing reserved program read from the storage device 29 to the second data size (the second data size or less) (block B716). Then, the communication processing unit 25 transmits the transcoded video data to the tablet computer 1 (block B717).

  Further, when the tablet computer 1 is not driven by the power supplied from the battery 109 (that is, when it is driven by the power supplied from the external AC power source) (NO in block B712), or consumption of the tablet computer 1 When the amount of power is less than the remaining amount of the battery 109 (YES in block B714), the communication processing unit 25 transmits the video data of the dubbing reserved program read from the storage device 29 to the tablet computer 1 ( Block B717). That is, when both the recording device 2 and the tablet computer 1 are driven by the power supplied from the external AC power source, or both the remaining battery level of the recording device 2 and the remaining battery level of the tablet computer 1 are dubbed. If it is sufficient to execute the program, the video data of the program is transmitted to the tablet computer 1 as it is.

  The communication processing unit 16 of the tablet computer 1 receives the video data transmitted from the recording device 2, and the data management unit 18 stores the received video data in the storage device 19 (block B718).

  Further, another example of the procedure of the dubbing process when video data is dubbed to the tablet computer 1 will be described with reference to the flowchart of FIG. In this example, not the recording device 2 but the tablet computer 1 determines the power supply state (remaining battery level) of the tablet computer 1. Here, it is assumed that the recording device 2 is driven by the power supplied from the external AC power source, and the tablet computer 1 is driven by either the power supplied from the battery 109 or the power supplied from the external AC power source. To do.

  First, the reservation processing unit 14 of the tablet computer 1 determines whether or not the current date and time is the date and time when dubbing was reserved based on the reservation information stored in the storage device 19 (block B601). For example, the reservation processing unit 14 uses a timer provided in the tablet computer 1 to determine whether or not the date and time when dubbing is reserved. If the date and time when dubbing is reserved (NO in block B601), the process returns to block B601 to determine again whether or not the current date and time is the date and time when dubbing was reserved.

  If it is the date and time when the dubbing was reserved (YES in block B601), the reservation processing unit 14 transmits the recorded program list data indicating the list of recorded programs to the recording device 2 via the communication processing unit 16. Request (block B602). The reservation management unit 261 of the recording device 2 transmits recorded program list data to the tablet computer 1 via the communication processing unit 25 in response to a request from the tablet computer 1 (block B603). Then, the communication processing unit 16 of the tablet computer 1 receives the recorded program list data transmitted from the recording device 2 (block B604).

  Next, the reservation processing unit 14 determines whether a program reserved for dubbing is recorded using the received recorded program list data (block B605). If the program is not recorded (NO in block B605), the display processing unit 12 displays a screen indicating that the recording of the program has failed (block B606), and ends the process.

  On the other hand, when the program is recorded (YES in block B605), the reservation processing unit 14 determines whether or not the tablet computer 1 is driven by the power supplied from the battery 109 (block B607). When the tablet computer 1 is driven by the power supplied from the battery 109 (YES in block B607), the reservation processing unit 14 performs a process of dubbing video data of the reserved program from the recording device 2 to the tablet computer 1. The power consumption amount of the tablet computer 1 required for completing the execution is estimated (block B608). For example, the reservation processing unit 14 is based on the data size of the video data of the reserved program, the communication speed between the recording device 2 and the tablet computer 1, and the power consumption of the tablet computer 1 during the dubbing process. The power consumption of the tablet computer 1 required for completing the dubbing process is estimated. Note that the data size of the video data of the reserved program may be indicated in the recorded program list data transmitted by the recording device 2 or estimated by the reservation processing unit 14 based on the recording quality, the recording time, and the like. May be.

  Then, the reservation processing unit 14 determines whether or not the estimated power consumption of the tablet computer 1 is less than the remaining amount of the battery 109 of the tablet computer 1 (block B609). When the power consumption of the tablet computer 1 is equal to or greater than the remaining amount of the battery 109 (NO in block B609), the reservation processing unit 14 can dubb (transfer) to the tablet computer 1 within the remaining amount of the battery 109 of the tablet computer 1. A correct data size is calculated (block B610). Then, the communication processing unit 16 notifies the recording device 2 of the calculated data size (block B611).

  The re-encoding processing unit 27 of the recording device 2 sets the video data of the dubbing reserved program read from the storage device 29 to the data size notified by the tablet computer 1 (below the notified data size). Transcoding is performed (block B612). Then, the communication processing unit 25 transmits the transcoded video data to the tablet computer 1 (block B613).

  Further, when the tablet computer 1 is not driven with the power supplied from the battery 109 (that is, when it is driven with the power supplied from the external AC power source) (NO in block B607), or the consumption of the tablet computer 1 When the amount of electric power is less than the remaining amount of the battery 109 (YES in block B609), the reservation processing unit 14 of the tablet computer 1 transmits video data of a program reserved for dubbing to the recording device 2 via the communication processing unit 16. Is requested to be transferred (dubbing) (block B613). The communication processing unit 25 of the recording device 2 transmits the video data of the program read from the storage device 29 to the tablet computer 1 in response to a request from the tablet computer 1 (block B614).

  The communication processing unit 16 of the tablet computer 1 receives the video data transmitted from the tablet computer 1, and the data management unit 18 stores the received video data in the storage device 19 (block B615).

  As described above, according to the present embodiment, an appropriate service can be executed with a battery-driven external device. The communication processing unit 25 of the recording device 2 establishes a connection with the tablet computer 1 that can be driven by the power supplied from the battery. When the first service is executed with the tablet computer 1, the estimation unit 262 estimates the power consumption of the tablet computer 1 for completing the execution of the first service. The execution control unit 263 executes the first service when the estimated power consumption is less than the remaining amount of power charged in the battery 109 of the tablet computer 1. On the other hand, when the estimated power consumption is equal to or greater than the remaining amount of the battery 109, the execution control unit 263 indicates that the power consumption of the tablet computer 1 for completing the execution of the first service is less than the remaining amount of the battery 109. And the second service is executed with the tablet computer 1.

  Thereby, since the service determined in consideration of the power supply state of the tablet computer 1 is executed between the devices, the service executed with the battery-driven tablet computer 1 can be normally completed. .

  In the above example, the service for dubbing video data of a program from the recording device 2 to the tablet computer 1 has been mainly described. However, this service is not limited to dubbing, and the recording device 2 and the tablet computer 1 It can be applied to any service that cooperates via wireless communication.

  Further, all of the processing procedures of the present embodiment described in the flowcharts of FIGS. 10 to 16 can be executed by software. For this reason, the same effect as this embodiment can be easily realized only by installing and executing this program on a normal computer through a computer-readable storage medium storing the program for executing this processing procedure. .

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Portable apparatus (tablet), 11 ... Control part, 12 ... Display processing part, 13 ... Input processing part, 14 ... Reservation processing part, 15 ... Battery control part, 16 ... Communication processing part, 17 ... Touch screen display, 18 Data management unit, 19 Storage device, 109 Battery, 2 Electronic device (recording device), 21 Control unit, 22 Display processing unit, 23 TV tuner, 24 Recording processing unit, 25 Communication processing unit , 26 ... Reservation processing unit, 261 ... Reservation management unit, 262 ... Estimation unit, 263 ... Execution control unit, 27 ... Re-encoding processing unit, 28 ... Battery control unit, 29 ... Storage device, 202 ... Antenna, 209 ... Display 230 ... Battery.

Claims (10)

A communication module;
When a connection is established with an external device that can be driven by power supplied from a battery, and execution of the first service is requested through the connection with the external device, the contents of the first service And control means for controlling whether to execute the first service or to execute a second service different from the first service, using the amount of power charged in the battery of the external device. Electronic equipment.   The control means executes the first service when the external device is driven by power supplied from an external power source, and when the external device is driven by power supplied from the battery, The electronic device according to claim 1, wherein one of the one service and the second service is executed.   The electronic device according to claim 1, wherein the control unit determines the content of the second service by changing a part of the content of the first service. Storage processing means for storing video data of a broadcast program in a storage device;
Estimating means for estimating the power consumption of the external device for completing the first service for transferring the video data to the external device;
The control means executes the first service for transferring the video data to the external device when the power consumption is less than the power charged in the battery, and the power consumption is charged in the battery. The power consumption of the external device for completing the transfer of the video data having the first data size is less than the amount of power charged in the battery. The electronic device according to claim 1, wherein the electronic device executes the second service that converts the video data into video data and transfers the converted video data to the external device. The storage processing means stores video data of a broadcast program requested by the external device in the storage device,
The control means receives information indicating the amount of power charged in the battery from the external device after the video data is stored in the storage device, and the power consumption is the amount of power charged in the battery. The video data having the first data size when the first service for transferring the video data to the external device is executed and the power consumption is equal to or greater than the power charged in the battery. Data is converted into video data of the second data size in which the power consumption of the external device for completing the transfer is less than the amount of power charged in the battery, and the converted video data is converted to the external device The electronic device according to claim 4, wherein the second service to be transferred is executed.   The electronic device according to claim 4, wherein the control unit further notifies the external device that the remaining amount of the battery is not sufficient when the power consumption is equal to or greater than the amount of power charged in the battery.   Further, the control means further, when the power consumption is greater than or equal to the amount of power charged in the battery, until the external device is driven by power from an external power source, or the amount of power charged in the battery is The electronic device according to claim 4, wherein the electronic device is controlled to wait for execution of the first service until the power consumption is exceeded.   The said estimation means estimates the said power consumption based on the power consumption of the said external device when the said 1st service is performed, and the communication speed between the said electronic device and the said external device. 4. The electronic device according to 4. A service control method for controlling an electronic device including a communication module,
Establishing a connection with an external device that can be driven by power supplied from the battery,
When execution of the first service is requested through a connection with the external device, the first service is used and the first service is used and the amount of power charged in the battery of the external device is used. A service control method for controlling whether to execute a service or to execute a second service different from the first service. A program executed by a computer including a communication module, wherein the program is
A procedure for establishing a connection with an external device that can be driven by electric power supplied from a battery;
When execution of the first service is requested through a connection with the external device, the first service is used and the first service is used and the amount of power charged in the battery of the external device is used. A program for causing the computer to execute a procedure for controlling whether to execute a service or to execute a second service different from the first service.

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