WO2008041308A1 - Dispositif électronique, procédé et programme pour commander le dispositif électronique, et support d'enregistrement - Google Patents

Dispositif électronique, procédé et programme pour commander le dispositif électronique, et support d'enregistrement Download PDF

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Publication number
WO2008041308A1
WO2008041308A1 PCT/JP2006/319602 JP2006319602W WO2008041308A1 WO 2008041308 A1 WO2008041308 A1 WO 2008041308A1 JP 2006319602 W JP2006319602 W JP 2006319602W WO 2008041308 A1 WO2008041308 A1 WO 2008041308A1
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WO
WIPO (PCT)
Prior art keywords
playback
electronic device
recording medium
reproduction
battery
Prior art date
Application number
PCT/JP2006/319602
Other languages
English (en)
Japanese (ja)
Inventor
Toshiro Ohbitsu
Original Assignee
Fujitsu Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Limited filed Critical Fujitsu Limited
Priority to JP2008537365A priority Critical patent/JP5083216B2/ja
Priority to PCT/JP2006/319602 priority patent/WO2008041308A1/fr
Publication of WO2008041308A1 publication Critical patent/WO2008041308A1/fr

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B31/00—Arrangements for the associated working of recording or reproducing apparatus with related apparatus
    • G11B31/02—Arrangements for the associated working of recording or reproducing apparatus with related apparatus with automatic musical instruments
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B31/00—Arrangements for the associated working of recording or reproducing apparatus with related apparatus
    • G11B31/006—Arrangements for the associated working of recording or reproducing apparatus with related apparatus with video camera or receiver

Definitions

  • the present invention relates to an electronic device capable of recording and reproducing when the battery is driven, such as a personal computer (PC) capable of recording and reproducing an image from a recording medium such as a DVD-Video (Digital Versatile Disc-Video).
  • a personal computer PC
  • the present invention relates to an electronic device that performs playback control according to the remaining capacity of a battery, a control method thereof, a control program thereof, and a recording medium.
  • Patent Document 1 predicts the device operation time based on the remaining battery capacity, and this operation time. And the playback time of the recording medium. If the operable time is shorter than the playback time of the recording medium, the playback speed is increased, and the playback of the recording medium is controlled to complete the playback within the operable time.
  • An apparatus is disclosed.
  • Patent Document 2 when the remaining amount of the battery is low, the clock frequency and voltage are lowered to reduce the power consumption of the CPU, and the program with a small amount of computation is executed to reduce the power consumption. System control is disclosed.
  • Patent Document 3 calculates the driveable time of the recording / playback apparatus from the remaining battery power, compares the operable time with the playback time of the media data file, and determines the driveable time of the media data file. It is disclosed that a warning is issued when it is impossible to play all media data files that are shorter than the playback time.
  • Patent Document 4 discloses that a reproducible time is predicted from the remaining battery level, content with a replay time shorter than the reproducible time is extracted, and the content is presented. Yes.
  • Patent Document 5 analyzes a recording signal for recording television program content on a recording medium, generates auxiliary data indicating an important scene of the television program content, and records the auxiliary data and the recording signal on the recording medium. In addition, it is disclosed that a recorded signal is reproduced based on auxiliary data and a digest of a television program is displayed. Further, Patent Document 5 discloses that the digest playback time is calculated based on the remaining amount of the notch, and that the most important content that can be digest playback within that time is preferentially played back.
  • Patent Document 6 detects the remaining time of a movie being played back and the remaining battery level, calculates the power that can be used before movie playback ends, and based on the calculation result, It is disclosed that the screen brightness is calculated and set.
  • Patent Document 7 discloses that power supply to peripheral devices not involved in decoding and playback of moving image data during the playback of a moving image such as a DVD video is cut off.
  • Patent Document 8 calculates the remaining playable time of a video based on the remaining battery power, and extracts the data of the unplayed portion of the video when the video cannot be played to the end with the remaining playable time. It is disclosed that after a preview is created and played back, the operation is stopped.
  • Patent Document 9 the operation condition is changed based on the set desired operation time and the operation possible time based on the remaining battery level, and the operation is controlled so as to satisfy the operation condition. It is disclosed.
  • Patent Document 1 Japanese Patent Laid-Open No. 2005-235343 (abstract, paragraph numbers 0026, 0029, FIG. 6 etc.)
  • Patent Document 2 Japanese Patent Laid-Open No. 2004-172690 (summary, FIG. 2 etc.)
  • Patent Document 3 Japanese Patent Application Laid-Open No. 2004-145997 (Abstract, Fig. 1 etc.)
  • Patent Document 4 Japanese Patent Laid-Open No. 2005-333583 (Summary, Fig. 1 etc.)
  • Patent Document 5 Japanese Unexamined Patent Publication No. 2005-348077 (summary, paragraph number 0072, FIG. 1 etc.)
  • Patent Literature 6 Japanese Unexamined Patent Publication No. 2006-33321 (summary, FIG. 2 etc.)
  • Patent Document 7 Japanese Patent Laid-Open No. 11 175205 (Summary, Fig. 6 etc.)
  • Patent Document 8 Japanese Patent Laid-Open No. 2005-204030 (Summary, Fig. 3 etc.)
  • Patent Document 9 Japanese Patent Laid-Open No. 9305272 (summary, Fig. 9 etc.)
  • Patent Documents 1 to 9 do not disclose them, and do not disclose or suggest any means for solving the problems.
  • an object of the present invention is to enable reproduction according to the remaining capacity of the battery and avoid reproduction interruption with respect to reproduction of recording data such as video from a recording medium such as DVD-Video.
  • Another object of the present invention relates to the reproduction of recorded data such as video from a recording medium such as a DVD-Video, which enables reproduction at a reproduction speed according to the remaining capacity of the battery, and interrupts reproduction. There is to avoid.
  • the present invention provides an electronic device that has a function of reproducing recorded data from a recording medium, and that reproduces recorded data such as video from a recording medium driven by a battery, such as a battery-driven PC.
  • a battery such as a battery-driven PC.
  • For equipment before or during playback of recorded data, determine whether it is possible to reproduce all of the recorded data on the recording medium or within a predetermined range based on the remaining capacity of the battery.
  • the reproduction is controlled according to the remaining capacity of the battery, and the whole reproduction of the recording data on the recording medium or reproduction within a predetermined range is realized.
  • the whole reproduction of the recorded data is the whole reproduction until the end of the recording data, and the reproduction within the predetermined range is reproduction within a specific range.
  • the time and power consumption required for playback are predicted from the amount of recorded data, and playback is controlled according to the remaining capacity of the installed battery. By doing so, it is possible to play the entire DVD—Video (playing to the end of the first power) and avoid interruption of playback. Depending on the remaining capacity of the battery, it is expected that playback will not be possible until the end of the recording content of the recording medium, but in that case, notification may be made and the switching of the playback mode to, for example, double speed playback is selected. Just do it.
  • the regeneration is controlled in accordance with the current remaining battery capacity after the load control is executed. As a result, the entire DV D-Video can be played back, and playback interruption can be avoided.
  • a first aspect of the present invention is an electronic device which has a function of reproducing recorded data from a recording medium and can be driven by a battery, and The remaining capacity of the battery being reproduced is compared with the power consumption necessary for reproducing the recorded data. When the consumed power exceeds the remaining capacity, the recorded data is reproduced according to the remaining capacity. It is the structure provided with the control part which controls. Such a configuration achieves the above object.
  • the control unit compares the power consumption with the remaining capacity of the battery to reproduce all of the recording medium or perform specific recording.
  • a configuration may be adopted in which a playback speed capable of playback of the data range is obtained, and playback of the recording medium is controlled at the playback speed.
  • the electronic device performs load control for reducing the load on the battery before reproducing the recording medium. If it is, it is determined whether or not the entire recording data of the recording medium or a predetermined range can be reproduced. If the reproduction is possible, the reproduction of the recording medium is performed after the load control. If the reproduction is impossible, the reproduction of the recorded data is controlled according to the remaining capacity of the battery after the load control.
  • load control for reducing the load on the battery before reproducing the recording medium. If it is, it is determined whether or not the entire recording data of the recording medium or a predetermined range can be reproduced. If the reproduction is possible, the reproduction of the recording medium is performed after the load control. If the reproduction is impossible, the reproduction of the recorded data is controlled according to the remaining capacity of the
  • the load control is a function of stopping one or a plurality of functions not directly related to reproduction of the recording medium. It is good also as a structure which reduces the load with respect to the said battery by 1 or 2 or more selected from either the change of electric power organization, the operation
  • the above object can also be achieved by such a configuration.
  • the recording data includes video data in the electronic device.
  • Such a configuration can also achieve the above object.
  • the electronic device preferably includes a measuring unit that measures the capacity of the battery, and the remaining capacity of the battery uses the capacity measured by the measuring unit. It is good also as a structure calculated by these. Such a configuration also achieves the above object.
  • the power consumption is power consumption expected for the entire reproduction of the recording medium or reproduction to a specific range of the recording medium. Further, it may be calculated using the data amount of the recording data. Such a configuration also achieves the above object.
  • the electronic device preferably includes a display unit for displaying a reproduction output of the recorded data and a message other than Z or the reproduction output,
  • the control unit compares the power consumption with the remaining capacity of the battery and can select a plurality of selectable modes including a playback speed playback mode that enables playback of the entire recording medium or playback up to a specific recording data range. Is displayed on the dialog screen of the display section.
  • the recording medium may be played back in a playback mode selected from the playback modes.
  • the above object can also be achieved by such a configuration.
  • the electronic device preferably displays a warning display screen on the display unit when the dialog display screen force normal playback mode displayed on the display unit is selected.
  • it may be configured to notify that the reproduction of the recording medium stops within a specific recording data range.
  • one or more functions not directly related to reproduction of the recording medium are not directly related to reproduction of the recording medium.
  • the configuration may be one or a plurality of applications. Such a configuration also achieves the above object.
  • the change of the power organization of the functional unit may be a change of the power scheme of the control unit.
  • the above object can also be achieved by such a configuration.
  • an operation change of one or a plurality of functional units not directly related to reproduction of the recording medium causes reproduction output of the recording data.
  • a configuration that is the brightness of the backlight of the display unit to display Such a configuration also achieves the above object.
  • the electronic device preferably, when the backlight level of the knock light of the display unit is changed, when the display is shifted to the reproduction, the backlight is displayed on the display unit. It is also possible to display a message indicating the light level change! The above object can also be achieved by such a configuration.
  • a second aspect of the present invention is a method of controlling an electronic device that has a function of reproducing recorded data from a recording medium and can be driven by a battery.
  • the remaining capacity of the battery being reproduced is compared with the power consumption necessary for reproducing the recorded data. When the consumed power exceeds the remaining capacity, the recorded data is reproduced according to the remaining capacity.
  • the control method of the electronic device preferably, the power consumption and the remaining capacity of the battery are compared, and the entire reproduction of the recording medium or specific recording data is recorded.
  • the method includes a step of obtaining a reproduction speed capable of reproducing the range and controlling the reproduction of the recording medium to the reproduction speed. Such a configuration also achieves the above object.
  • load control for reducing a load on the battery is performed before reproduction of the recording medium. It is determined whether or not the entire recorded data can be reproduced or a predetermined range can be reproduced. If the reproduction is possible, after the load control, the recording medium is reproduced and the reproduction is impossible. If so, the method includes a step of controlling the reproduction of the recorded data in accordance with the remaining capacity of the battery after the load control.
  • the above object can also be achieved by such a configuration.
  • the load control is not directly related to reproduction of the recording medium.
  • the load on the battery is reduced by one or two or more selected from a change in power organization, or an operation stop or change in operation of one or more functional units.
  • the power consumption and the remaining capacity of the battery are compared to reproduce all of the recording medium or to record specific recording data.
  • a plurality of selectable playback modes including a playback mode at a playback speed capable of playback up to a range are displayed on a dialog screen, and the recording medium is played back in the playback mode selected from the playback modes.
  • the method for controlling an electronic device preferably, when the dialog display screen force normal reproduction mode displayed on the display unit is selected, a warning display screen is displayed. Further, the recording medium is informed that the reproduction of the recording medium is stopped within a specific recording data range. Such a configuration also achieves the above object.
  • the method for controlling an electronic device preferably, when the backlight level of the backlight of the display unit that displays the reproduction output is changed, the reproduction is switched to reproduction. The display unit displays a message indicating the change in the backlight level.
  • the backlight level of the backlight of the display unit that displays the reproduction output is changed
  • the display unit displays a message indicating the change in the backlight level.
  • a third aspect of the present invention is a control program for an electronic device that is executed by a computer and has a function of reproducing recording data and recording data and can be driven by a battery. Then, the remaining capacity of the battery before or during playback is compared with the power consumption necessary for playback of the recorded data, and when the power consumption exceeds the remaining capacity, the remaining capacity depends on the remaining capacity.
  • the configuration includes a step of controlling reproduction of recorded data. With such a configuration, the above object is achieved.
  • control program for the electronic device preferably compares the power consumption with the remaining capacity of the battery to reproduce all of the recording medium or to specify a specific capacity.
  • the method includes a step of obtaining a reproduction speed capable of reproducing the range of the recorded data and controlling the reproduction of the recording medium to the reproduction speed.
  • the control program for the electronic device preferably performs load control for reducing the load on the battery before reproducing the recording medium. It is determined whether or not the entire recording data of the recording medium or a predetermined range can be reproduced. If the reproduction is possible, after the load control, the process proceeds to the reproduction of the recording medium. If the reproduction is not possible, the method includes a step of controlling the reproduction of the recorded data in accordance with the remaining capacity of the battery after the load control. The above object can also be achieved by such a configuration.
  • the load control is a stop of one or a plurality of functions not directly related to reproduction of the recording medium. And a step of reducing the load on the battery by one or two or more selected from either a change in the power organization of the functional unit, an operation stop or an operation change of one or a plurality of functional units.
  • the electronic device control program preferably compares the power consumption and the remaining capacity of the battery to reproduce all of the recording medium or to perform a specific operation.
  • control program for the electronic device preferably displays a warning display screen when the dialog display screen force normal playback mode displayed on the display unit is selected. And displaying that the reproduction of the recording medium stops within a specific recording data range.
  • control program for the electronic device preferably shifts to reproduction when the backlight knock level of the display unit that displays the reproduction output is changed. Includes a step of displaying a message indicating the change in the backlight level on the display unit.
  • a fourth aspect of the present invention provides a computer readable storage of a control program for a battery-driven electronic device having a function of reproducing recorded data from a recording medium
  • the recording capacity of the battery before reproduction or during reproduction is compared with the power consumption necessary for reproduction of the recorded data, and the power consumption exceeds the remaining capacity.
  • the control program power and the power consumption are compared with the remaining capacity of the battery. And a step of obtaining a reproduction speed capable of reproducing all of the recording medium or reproducing a range of specific recording data, and controlling the reproduction of the recording medium to the reproduction speed.
  • the control program power is loaded on the battery before the recording medium is reproduced.
  • the load control is performed to alleviate the recording medium, it is determined whether or not the entire recording data of the recording medium or a predetermined range can be reproduced.
  • the recording medium reproduction includes a step of controlling the reproduction of the recording data according to the remaining capacity of the battery after the load control.
  • the load control is not directly related to reproduction of the recording medium.
  • the load on the battery is reduced by one or more selected from the following: one or more of the functions are stopped, the power organization of the function unit is changed, or the operation of one or more function units is stopped or changed. It is a configuration. With this configuration, the above object is achieved.
  • a computer-readable recording medium storing a control program for the electronic device
  • the control program power is compared with the power consumption and the remaining capacity of the battery.
  • a plurality of selectable playback modes including a playback mode at a playback speed at which playback of the entire recording medium or playback up to a specific recording data range is possible, and playback selected from the playback mode.
  • the recording medium is played back in a mode.
  • the control program power In order to achieve the above object, in the computer readable recording medium storing the control program of the electronic device, preferably the control program power
  • a warning display screen is displayed, and a step of notifying that reproduction of the recording medium is stopped within a specific recording data range is included.
  • a control program for the electronic device preferably the control program power
  • the control program power When changing the backlight level of the backlight of the display unit that displays the program power S and the reproduction output, and when shifting to the reproduction, a step of displaying a message indicating the change of the backlight level on the display unit is included. It is the composition which includes. With this configuration, the above object is achieved.
  • Playback interruption can be prevented.
  • FIG. 1 is a block diagram showing a configuration example of a personal computer according to a first embodiment of the present invention.
  • FIG. 2 is a diagram illustrating a configuration example of HD.
  • FIG. 3 is a flowchart showing an example of a processing procedure of a reproduction control method.
  • FIG. 4 is a flowchart showing an example of a processing procedure of a playback control method and a playback control program.
  • FIG. 5 is a flowchart showing an example of a processing procedure of a playback control method and a playback control program.
  • FIG. 6 is a flowchart illustrating an example of a DVD processing procedure.
  • FIG. 7 is a diagram showing temporal changes in bit rate.
  • FIG. 8 is a flowchart showing an example of a processing procedure for battery processing.
  • FIG. 9 is a flowchart showing an example of a processing procedure of a double speed flow.
  • FIG. 10 is a diagram showing an example of a data table.
  • FIG. 11 shows an example of warning message display (backlight level change).
  • FIG. 12 shows an example of a selection dialog display screen.
  • FIG. 13 is a diagram showing an example of warning message display (reproduction stop).
  • FIG. 14 is a diagram showing an example of a warning message display (reproduction end).
  • FIG. 15 is a diagram showing an example of calculation processing of power consumption of each chapter of a DVD.
  • FIG. 16 is a diagram showing an example of a calculation process of remaining battery time.
  • FIG. 17 is a diagram showing an example of a screen display indicating the remaining time that can be played.
  • FIG. 18 is a diagram showing an example of a screen display indicating the remaining time that can be played.
  • FIG. 19 is a flowchart showing an example of a processing procedure of the reproduction control method according to the second embodiment.
  • FIG. 20 is a flowchart showing an example of a playback control method and a processing procedure of a playback control program.
  • FIG. 21 is a flowchart showing an example of a processing procedure of the reproduction control method according to the third embodiment.
  • FIG. 22 is a flowchart showing an example of a processing procedure of a playback control method and a playback control program.
  • FIG. 23 is a flowchart showing an example of a processing procedure of a reproduction control method and a reproduction control program according to the fourth embodiment.
  • FIG. 24 is a diagram showing an example of a selection dialog display screen.
  • FIG. 25 is a diagram illustrating an example of a PC according to a fifth embodiment.
  • FIG. 1 is a block diagram showing a configuration example of a personal computer (PC) according to the first embodiment.
  • PC personal computer
  • the PC 2 is an example of an electronic device that has a function of reproducing video and the like from a recording medium such as a DVD-Video and can be driven using a battery that is an internal power source.
  • a unit 6, a display unit 8, an audio unit 10, and a control unit 12 are provided.
  • the power supply unit 4 is a functional unit for supplying power to various functional units such as the control unit 12 using the battery 16 or the AC adapter 18 that is an external power supply.
  • the power supply unit 4 includes a battery 16 that is a rechargeable storage battery, and an AC adapter 18 is connected to the connector 20.
  • the AC adapter 18 is an AC-DC converter that receives supply of commercial alternating current (AC) power 22 and converts the alternating current into direct current.
  • the AC adapter 18 constitutes an external power source for PC2, and outputs a predetermined DC voltage to PC2 To supply.
  • the power circuit 26 receives the output of the AC adapter 18 or the battery 16 and supplies a DC stable output to various functional units such as the control unit 12.
  • the charging circuit 28 is a circuit for charging the battery 16 with the output of the AC adapter 18.
  • the diode 30 connected between the power switch 24 and the power circuit 26 is an insulating means for separating and insulating the power circuit 26 and the charging circuit 28.
  • the output of Notch 16 is the die Force applied to the power supply circuit 26 through the odes 31 and 33 In that case, if the output of the AC adapter 18 is fed to the charging circuit 28, the output of the charging circuit 28 is connected to the battery 16 via the diode 31. Charged state (floating charge).
  • the diode 31 is an insulating means between the charging circuit 28 and the battery 16 when the battery is driven.
  • the power supply unit 4 includes an AC adapter detection unit 32 that detects the presence or absence of the AC adapter 18, and a battery capacity detection unit 34 that detects the battery capacity used for the measurement and calculation of the remaining capacity of the battery 16. And are provided. Based on the connection of the AC adapter 18 to the connector 20, the AC adapter detection unit 32 detects whether the AC adapter 18 is connected, that is, whether the output of the AC adapter 18 is supplied, by turning on and off the power switch 24 and its output. To do. This detection information is taken into the control unit 12 and used for reproduction control. Further, the capacity detection unit 34 of the notch 16 detects the current capacity of the battery 16 connected to the power supply circuit 26. This detection information is taken into the control unit 12 and used for measurement and calculation of the current capacity and remaining capacity of the battery 16.
  • the medium reading unit 6 is a reading unit that reads video information and audio information from a recording medium, and includes, for example, a DVD drive 36 and another medium drive 37.
  • the DVD drive 36 reads, for example, bit rate information as well as video information and audio information from a DVD-Video 38 as a recording medium. These pieces of information are taken into the control unit 12 to convert video information into video, audio information into audio, and bit rate information is used for playback control.
  • the display unit 8 is an output unit that reproduces and outputs the reproduced video information as a video, and includes a liquid crystal display unit 40 and a backlight 42.
  • the liquid crystal display unit 40 is composed of an LCD (Liquid Crystal Display)
  • the knock light 42 is composed of a light source such as a fluorescent tube, and irradiates light from the back side of the LCD to the front side.
  • the brightness (backlight level) of the backlight 42 is controlled by the drive current or the like.
  • the audio unit 10 is a conversion unit that converts reproduced audio information into audio, and includes an audio codec unit 44, a speaker 46, and the like.
  • the audio codec unit 44 converts the audio information into an audio signal and outputs it to the speaker 46.
  • the speaker 46 converts an audio signal into audio.
  • the control unit 12 controls the power supply unit 4 and the display unit 8 with reference to detection information and control information based on the execution of various programs such as an operating system (OS) and a reproduction control program.
  • the control unit 12 includes a CPU (Central Processing Unit) 48, a storage unit 50, a north bridge 52, a south bridge 54, a power supply control unit 56, a knock light control unit 58, and an input control unit 60.
  • CPU Central Processing Unit
  • the CPU 48 executes an OS, a playback control program, and the like in the storage unit 50, and performs arithmetic processing and control of each unit.
  • the storage unit 50 is a recording medium that stores programs and information, and includes, for example, an HD (Hard Disc) 62 and a RAM (Random-Access Memory) 64 as ROM (Read-Only Memory).
  • the HD 62 is connected to the south bridge 54 and stores an OS, an application program, and the like.
  • the RAM 64 is connected to the north bridge 52, and is used as a working area by loading the OS and playback control program.
  • the storage unit 50 may use an external storage device.
  • a program storage area 66, a data storage area 68, and the like are set in the HD 62 of the storage unit 50, and the program storage area 66 includes playback control including OS 662, playback application, and the like.
  • Applications such as the program 664 are stored, and in the data storage area 68, a data table 682 is set, and various types of information such as power information corresponding to the playback speed and calculation results of power consumption are stored.
  • the north bridge 52 and the south bridge 54 constitute a chip set.
  • the north bridge 52 passes calculation information and the like between the CPU 48 and the main memory, and the south bridge 54 inputs and outputs external information and the like to the CPU 48. Used.
  • the power supply control unit 56 is supplied with power from the power supply circuit 26 and controls the power configuration (power scheme) of the PC 2 and the power supply to the backlight control unit 58.
  • the knock light control unit 58 is controlled by the CPU 48 and controls a drive current applied to the knock light 42 and the like. Specifically, with this control, the brightness of the knocklight 42 (backlight Level) is controlled.
  • An input operation unit 70 such as a keyboard is connected to the input control unit 60, and input information from the input operation unit 70 is transmitted to the CPU 48.
  • the drive with the battery 16 as the internal power supply and the drive power with the battery 16 as the internal power supply determine whether the battery 2 with the remaining capacity of the battery 16 is used. — Judge whether or not playback of the video 38 from the beginning to the end (full playback) or playback of a specific range of recorded data of DVD Video 38 is possible. If playback is possible, shift to playback. If regeneration is not possible, stepwise load control is performed to reduce the power consumption of the battery 16, and if regeneration is possible, transition to regeneration is performed. The load control is performed by one or more selected from one or more of the functions being stopped, the power organization of the function unit being changed, or the operation of one or more function units being stopped or changed. For example, termination of applications unnecessary for playback, change of PC2 power organization (power scheme), change of brightness (backlight level) of backlight 42 of display unit 8 .
  • stepwise load control it is determined whether or not it is possible to reproduce the entire DVD-Video 38 or a specific range of the recorded data. If possible, load control is performed. After that, if it is not possible, it is corrected to the remaining capacity of the notch 16, and the playback is controlled according to the remaining capacity, such as changing the playback speed of the DVD-Video 38.
  • the remaining capacity of the battery 16 is corrected according to the reduction ratio, and the DVD-Video 38 playback speed is changed according to the remaining capacity. Control playback.
  • FIG. 3 is a flowchart showing an example of the processing procedure of the video playback control method using PC2.
  • This video playback control method includes determination of drive power supply (step S1), and recording by battery capacity. Includes judgment of whether or not all recording media can be played back (Step S2), load control and full playback judgment (Step S3), playback mode selection and warning display (Step S4), and playback processing (Step S5) It is.
  • Step S2 may include a warning display. In this process, the process is terminated after the reproduction process, but it goes without saying that the process returns to step S2 in the course of the reproduction process and the process is circulated.
  • step S1 Determination of drive power supply (step S1)
  • the detection output of the AC adapter detection unit 32 is captured by the CPU 48 and the output of the AC adapter 18 is checked. If the output of the AC adapter 18 is supported by the power supply unit 4, sufficient drive power can be obtained, and the process proceeds to the regeneration process (step S5). If the AC adapter 18 is not connected, and if sufficient drive power cannot be obtained even if the AC adapter 18 is connected, the operation shifts to the notch 16 drive. When battery 16 is selected as the drive power supply, the following processing is executed before the regeneration processing (step S5).
  • step S2 Judgment of whether or not the entire recording medium can be reproduced
  • This playback control is based on the assumption that all playback of the DVD-Video 38, that is, playback from the beginning to the end is possible. Therefore, the power consumption for full playback of this DVD-Video 38 and the remaining capacity of the battery 16 are calculated.
  • the battery capacity detection unit 34 detects the current capacity of the battery 16. By using this detection information, the remaining capacity of the notch 16 is calculated.
  • step S5 the remaining capacity of the battery 16 is erased. If it is less than the power consumption, it is impossible to play the entire DVD-Video 38, which may interrupt playback.
  • the remaining capacity of the battery 16 is converted into the playback operation time of the PC2, and this playback operation time is compared with the playback time of all DVD-Video38 playback. You can judge whether or not it is correct.
  • load control is executed as a process for suppressing the consumption of the notch 16. This load control is performed in stages, and at the reduction stage, it is determined whether or not the entire DVD-Video 38 can be played.
  • An unnecessary application is, for example, an Internet search program or a mail program. This reduction in load is equivalent to increasing the remaining capacity of the battery 16 accordingly. Therefore, if the load is reduced by ending unnecessary applications, it is determined whether or not the entire DVD-Video 38 can be played. If the entire reproduction is possible, the process proceeds to the reproduction process (step S5). If not, the process proceeds to the next stage of power consumption reduction.
  • DVD Calculate the brightness (backlight level) of backlight 42 that can play all of Video38 Reduce the power and perform a power check (Power Check C). That is, it is determined whether or not the entire DVD-Video 38 can be played back based on the calculated backlight level. If the playback is possible, the process proceeds to the playback process (step S5). Changes to the next playback mode.
  • the drive current for the backlight 42 of the display unit 8 may be reduced. If the knocklight level is reduced, the level drop is notified by a warning message (Fig. 11) and the process proceeds to playback (step S5).
  • step S3 If all of the DVD-Video 38 cannot be played even after performing this power consumption reduction process (step S3), multiple playback modes (high-speed playback mode, partial high-speed playback mode) are available. ) And other playback modes (normal playback, playback stop) are presented on the dialog display screen (Fig. 12), and the user is allowed to select the playback mode and transition to playback (step S5). At this time, if a playback mode in which playback is impossible is selected, a warning message (Fig. 13) is notified and the process proceeds to playback (step S5).
  • Selectable playback modes include the following playback modes.
  • DVD The bit rate of Video 38 is detected, and a fluctuation value is taken into consideration for the bit rate, and the double speed value necessary for all playback is obtained. For example, 1.2 times, 1.5 times, 1.8 times, 2 times, 3 times, 4 times ' ⁇ ', etc. are set for this playback speed. Select a double speed value that allows full playback from the value. Therefore, in the high-speed playback mode, video and audio are played back with the set double speed value.
  • a part is set to the high-speed playback mode, and the other part is played back in the normal playback mode. Also in this case, it is assumed that all playback is A high-speed playback portion and a normal playback portion necessary for live are required. For example, the highlight portion is set to the normal playback mode, and the other portion is set to the high speed playback mode.
  • This playback mode is playback at normal speed.
  • FIG. 4 and FIG. 4 and 5 are flowcharts showing an example of the processing procedure of the playback control method and the playback control program.
  • a and B show the connection parts between the flowcharts.
  • FIGS. 4 and 5 the same reference numerals are given to the portions common to the flowchart of FIG.
  • the playback application is an example of a playback control program, and is expanded from the HD 62 of the storage unit 50 to the RAM 64 on the OS.
  • step Sl l Prior to playback of the DVD-Video 38, it is determined whether or not the PC 2 has the AC adapter 18 (step Sl l). This determination is a determination as to whether or not power can be supplied from the AC adapter 18. When the AC adapter 18 is connected, it is driven by the AC power source 22, and when the AC adapter 18 is not connected, it is driven by the battery 16.
  • step S11 if the AC adapter 18 is connected (YES in step S11), the process proceeds to DVD-Video 38 playback without going through steps S12 to S21 (step S22).
  • step S12 the remaining capacity of the battery 16 is detected. As described above, the detection of the remaining capacity is obtained by the detection information power of the battery capacity detection unit 34.
  • the playback time of the set DVD-Video 38 is detected (step S13).
  • the bit rate is calculated for each chapter (Chapter), which is a unit of measurement of content stored in DVD-Video 38, and the power consumption required to play back the data at that bit rate is stored for each chapter. To do.
  • the playback time of DVD-Video 38 is detected by summing the power consumption of each chapter to obtain the total power consumption.
  • This playback time detection process is executed by the DVD flow (playback time detection program shown in FIG. 6). [0118] Compare the playback time of DVD—Video 38 with the operation time due to the remaining capacity of battery 16, and the capacity to play back to the end of DVD—Video 38 with the remaining capacity of battery 16 (full playback) It is determined whether or not (step S14). If all playback is possible, the process proceeds to DVD-Video 38 playback without going through steps S15 to S21 (step S22).
  • DVD If the entire playback of Video38 is not possible, the first stage of load control is DVD
  • step S15 An application unnecessary for playback of Video 38 is terminated (step S15).
  • the power check is executed by the battery flow (power check program shown in FIG. 8). In this case, the power check A of the battery 16 is executed.
  • step S16 it is determined whether or not the DVD—Video38 can be played from the beginning to the end with the remaining capacity of the battery 16 (step S16), and the DVD—Video38 can be played from the beginning to the end. If there is (YES in step S16), the process proceeds to DVD-Video 38 playback (step S22). If the DVD-Video 38 cannot be played back to the end (NO in step S16), the setting before playback is stored as the second stage of load control, and the power scheme of PC 2 is changed (step S). 17). When this power skim is changed, a power check is executed in the battery flow (power check program shown in FIG. 8), and in this case, power check B of notch 16 is executed.
  • step S18 it is determined whether or not DVD-Video 38 can be played to the end with the remaining capacity of battery 16 (step S18). If playback to the end of DVD-Video 38 is possible (step S18) S18 YES), the process proceeds to playback of DVD-Video 38 (step S22). If the DVD-Video 38 cannot be played to the end (NO in step S18), the remaining capacity of the notch 16 and the power required to play the DVD-Video 38 to the end are calculated, and the third stage of load control is performed. As a result, the knock light level (luminance) of the reproducible backlight 42 is calculated (step S19). When this knock light level is calculated, a power check is executed by a notch flow (power check program shown in FIG. 8). In this case, a power check C of the battery 16 is executed.
  • Step S20 If the backlight level of the backlight 42 is reduced, the remaining capacity of the battery 16 Judge whether or not Video38 can be played to the end (Step S20). If DVD-Video38 can be played to the end (YES in Step S20), play back after recording the backlight level before playback. The backlight level is changed to a suitable backlight level (step S21), DVD-Video38 is played (step S22), and a warning message is displayed (FIG. 11). Then, after playback of the DVD-Video 38, normal application processing is performed (step S23).
  • step S20 If the DVD-Video 38 cannot be played to the end in step S20 (NO in step S20), the process proceeds to the flowchart shown in Fig. 5, and the bit rate of the inserted DVD-Video 38 is changed. Detects and takes into account the bit rate fluctuation value, obtains the power consumption required for double-speed playback for each DVD—Video38 chapter, and whether it can be played to the end of the DVD—Video38. The playback speed for playing Video38 to the end is determined (step S24).
  • step S25 If playback beyond the chapter M is impossible due to this determination, the fact that playback up to chapter M is possible is notified and a playback mode selection dialog is displayed (step S25).
  • step S26 it is determined whether or not the force is high when fast playback mode A is selected (step S26). If fast playback mode A is selected (YES in step S26), DVD— Compares the power consumption during playback of Video38 and the remaining capacity of the battery 16 and automatically changes the playback speed to the end of DVD—Video38 (step S27), then moves to step S22 (DVD—Video38 playback). To do.
  • step S26 NO If the fast playback mode A is selected (step S26 NO), it is determined whether the partial fast playback mode B is selected (step S28), and the partial fast playback mode B is selected. If this happens (YES in step S28), the chapter block level (Chapter Block) is automatically changed to a setting that allows playback at a speed equal to or lower than the predetermined level ZZ (step S29), and step S22 (DVD—Video38). To play).
  • step S30 If partial fast playback mode B is selected and no power is applied (NO in step S28), it is determined whether or not the normal playback mode C is selected (step S30), and normal playback mode C is selected. If this is the case (YES in step S30), normal playback starts, and if there is no remaining battery 16 capacity, the PC2 playback operation is stopped and shut down as normal processing (step S31). Is terminated (step S32). In normal playback mode, a warning message (Fig. 13) is displayed.
  • step S30 NO If normal playback mode C is selected (step S30 NO), that is, if playback is ended, all settings are restored and warning message 85 (Fig. 14) is displayed. The application case is terminated (step S33).
  • FIG. 6 is a flowchart showing a DVD processing procedure
  • FIG. 7 is a diagram showing a temporal change in the bit rate.
  • This DVD flow includes the detection of the bit rate of DVD-Video 38, its integration, and storage processing of the integral value.
  • step S41 when a DVD-Video 38 is inserted into the DVD drive 36 (step S41), an event indicating the installation is entered from the DVD drive 36 to the OS (step S42). At this time, it is determined whether or not the mounted device is a DVD-Video (step S43). If not, the process is terminated.
  • step S43 If it is a DVD—Video (YES in step S43), the bit rate of the title Z chapter is detected by application processing (step S44), the time is taken on the horizontal axis, and the bit rate is taken on the vertical axis ( Figure 7), integrates the bit rate for each chapter, and stores the integration data in the data storage area 68 of the HD62 (step S45).
  • the “title” is an aggregate of a plurality of “chapters” in the DVD-Video 38, and the “chapter” is a constituent unit of the “title” and is stored in the DVD-Video 38. It is a storage unit for recorded data.
  • the temporal change (bit rate pattern) of the bit rate can be expressed by taking time on the horizontal axis and bit rate on the vertical axis, as shown in Fig. 7, which is integrated over time. Is the integral data.
  • Figure 7 shows the bit rate pattern of a general DVD-Video with a variable bit rate. The bit rate varies greatly with time. At high bit rates, power consumption increases due to the processing, and at low bit rates, power consumption can be suppressed.
  • FIG. 8 is a flowchart showing the procedure of battery processing.
  • This battery flow is based on the model information of the PC2 on which the application is running, the power consumption value of the DVD drive 36, the power consumption information due to the difference in bit rate, the presence / absence of double speed playback, etc. The process of calculating the power consumption for each is included.
  • step S51 the model information of PC2 on which the application is running is obtained.
  • step S52 The individual power consumption values of the DVD drive 36 and the like in DVD playback, which are stored data of the application, and the power consumption due to the difference in bit rate are called from the data storage area 68 of the HD 62 (step S52).
  • step S53 it is determined whether or not there is power with double speed playback. If there is no double speed playback (NO in step S53), power measurement and power consumption are performed according to the OS power meter Z power status. The remaining capacity of the current battery 16 is confirmed from the state (step S54). If there is double speed playback (YES in step S53), the double speed flow (Fig. 9) is executed (step S55), and the process proceeds to step S54.
  • step S56 The integrated data detected in the DVD flow (step S45 in Fig. 6) is called (step S56), the power consumption for each chapter is calculated (step S57), and the calculated power consumption for each chapter is added (step S). 58), the remaining capacity of the battery 16 is also added to the power consumption of each chapter (step S59), and this process is terminated.
  • FIG. 9 is a flowchart showing the processing procedure of the double speed processing
  • FIG. 10 is a diagram showing the data table 682.
  • step S61 the data table 682 storing the power consumption in Ny double-speed playback is called (step S61), and the double-speed consumption percentage corresponding to the bit rate detected in the DVD flow (Fig. 6) is all stored.
  • step S62 the integration data
  • step S63 the screen display of the display unit 8 will be described with reference to FIGS. 11, 12, 13, and 14.
  • FIG. Fig. 11 shows an example of PC2 warning message display (backlight level change)
  • Fig. 12 shows an example of PC2 dialog display screen
  • Fig. 13 shows PC2 warning message display (playback).
  • FIG. 14 is a diagram showing an example of warning message display (reproduction end) of PC2. 11 to 14, the same parts as those in FIG. 1 are denoted by the same reference numerals.
  • a warning message 74 is displayed on the display screen 72 of the display unit 8, as shown in FIG. This warning message 74 indicates that the knocklight level will change and play, for example,
  • the selection dialog display 78 is displayed on the display screen 76 as shown in FIG.
  • a selectable playback mode and the end of playback are displayed together with a warning message indicating that playback up to chapter M of DVD-Video 38 is possible and thereafter playback stops. Therefore, in the selection dialog display 78, for example,
  • “A” corresponds to the above-described high-speed playback mode (3.1). If this “A” is selected, playback is performed at Ny double speed and DVD — Can play up to the end of Video38.
  • “B” corresponds to the partial high-speed playback mode (3.2) described above, and if this “B” is selected,
  • Play a part in high-speed playback mode for example, M times normal speed, other part normal playback,
  • DVD plays to the end of Video38. For example, only the highlight scene is played normally and the other parts are played back at M times speed.
  • a warning message 82 is displayed on the display screen 80 of the display unit 8, as shown in FIG. In this process, since the normal playback mode has been selected, it is warned that playback will be interrupted at chapter M of DVD-Video 38.
  • This warning message 82 is, for example,
  • [0155] is displayed.
  • the user can know the chapter number of the chapter M to be interrupted or interrupted.
  • a warning message 85 is displayed on the display screen 83 of the display unit 8, and the warning message 85 is, for example,
  • This power check A, B, and C are conversion processes for the notch capacity of the power consumption of PC2, and power check A, power check B, and power check C are set as stepwise power capacity conversion.
  • FIG. 15 is a diagram showing the calculation processing of the power consumption of each chapter of DVD
  • FIG. 16 is a diagram showing the calculation processing of the remaining time of the battery in the power check A, B or C.
  • the title T1 of the DVD-Video 38 includes a plurality of chapters 01, 02.
  • the power consumption of each of these chapters 01, 02, ⁇ is calculated for each predetermined time. For example, if the chapters are divided every 5 minutes and set as chapter blocks as the predetermined time, the chapter blocks 01— ⁇ , 01— ⁇ , 0 ⁇ -C ... Is the chapter block 02— ⁇ , 02—B, 02—C ',', and the last chapter N is the chapter block N—A, N—B, NC-... The power consumption of each of these chapter blocks Is calculated.
  • the remaining time at the end of each chapter block is battery capacity [mWh], remaining battery capacity [%], power consumption 1A, 1B, 1C '.', 2A '. ', Nn [mW], obtained using the power check correction coefficient Ka, Kb or Kc obtained in the power checks A, B, C described above (steps S71, S72).
  • the remaining time is proportional to the power check correction coefficient. It is in. As described above, the power check correction coefficient is Na ⁇ Nb ⁇ Nc. Therefore, the remaining time in power check A is the smallest, and the remaining time in power check C is the largest. In the case of, the remaining time is an intermediate value between power check A and power check C.
  • the unit bit rate of the chapter is calculated
  • the power consumption is calculated from the correlation between the total power consumption and the bit rate
  • the battery is calculated from the relationship between the PC2 state, the remaining capacity of the battery 16 and the bit rate. 16 remaining time is calculated. Accurate calculation is possible based on the relationship between bit rate and time.
  • the remaining capacity (power) of the battery 16 is compared with the sum of the power consumption of each chapter and the playback speed at which DVD-Video38 can be played to the end. And play with power consumption. Also, in normal playback, playback is performed without changing the playback speed, so if there is no remaining capacity of the battery 16, the power to interrupt DVD-Video 38 playback is the desired playback mode, so there is no problem. .
  • DVD Changes the CPU operation and playback mode automatically according to the remaining capacity of the battery 16 before playing Video38, and starts playback.
  • the playback mode (that is, the playback method) is entered in the selection dialog display 78 together with a warning display, and the user is allowed to select the playback mode and automatically shift to that playback mode, depending on the remaining capacity of the battery 16. It presents a method that can be played back at playback speed.
  • the start Z chapter can be automatically changed. This eliminates the need for the user to specify the playback section.
  • the warning dialog can also be displayed as a chapter, and information that can be easily understood by the user can be presented in comparison with the display of the percentage Z starting minutes.
  • the remaining time displayed by the OS is as shown in Fig. 17 (A) and (B). Is calculated by This shows the operating time of the remaining capacity of the battery 16 in the OS. For this reason, when the power consumption changes abruptly as in DVD-Video, an error occurs in the remaining time at that time, and the accurate remaining time cannot be presented. In the display of the remaining time before DVD-Video playback, even if it is within the DVD-Video recording time, the displayed remaining time changes when playback is started. Also, (A) and (B) in Fig. 18 show the remaining time at that time when the OS detects a sudden consumption current due to DVD-Video playback, etc., even if the remaining capacity of the battery 16 is the same.
  • the backlight of the display unit is set to a medium level luminance, and the CPU ⁇ rceleron M350 "(registered trademark)-1.3GH z ⁇ manufactured by Intel Corporation is used as the CPU.
  • D-VD-Video is played back using 10.8V / 4400mAh and its remaining capacity 100 [%] for battery 42, if DVD-Video is "4Mbps DVD-Vide o", it will be about 2 hours and 10 minutes of playback is possible, and “8Mbps DVD—Video” If so, it can be played for about 2 hours.
  • FIG. 19 is a flowchart showing an example of the processing procedure of the reproduction control method according to the second embodiment
  • FIG. 20 shows an example of the processing procedure of the reproduction control method and the reproduction control program according to the second embodiment. It is a flowchart to show.
  • Step S201 power consumption reduction and full playback availability (Step S202), playback mode determination and selection (Step S203), playback processing (Step S204)
  • step S2 the determination as to whether or not the recording medium can be completely reproduced with the notch capacity (step S2) is omitted. Even if the judgment on whether or not all recording media can be played back with the battery capacity is omitted (step S2), the entire recording media can be played back in the course of stepwise load control by reducing power consumption and whether or not all playback is possible (step S202). Therefore, even with such a configuration, the same effect as in the first embodiment can be obtained.
  • Step S211 the presence or absence of the AC adapter 18 is determined (step S211), the remaining battery capacity is detected (step S212), the DVD — Video38 playback time detection (step S213), DVD —The application unnecessary for playback of the DVD-Video 3 8 is terminated without determining whether or not the entire playback of the Video 38 is possible (step S214).
  • Step S215 is step S16 in FIG. 4
  • step S216 is step S17 in FIG. 4
  • step S217 is step S18 in FIG. 4
  • step S218 is step S19 in FIG. 4
  • step S219 is step S2 0 in FIG. 4
  • step S220i Step S21 in FIG. 4
  • reference symbols A and B are the flowcharts of the first embodiment (FIG. 5).
  • FIG. 21 is a flowchart showing an example of the processing procedure of the reproduction control method according to the third embodiment.
  • FIG. 22 shows an example of the processing procedure of the reproduction control method and the reproduction control program according to the third embodiment. It is a flowchart to show.
  • Step S301 determination of whether or not the entire recording medium can be reproduced (Step S302), determination and selection of a reproduction mode (Step S303), and reproduction processing (Step S304).
  • Step S3 determination of whether or not the entire recording medium can be reproduced
  • Step S303 determination and selection of a reproduction mode
  • Step S304 reproduction processing
  • playback speed control is executed as playback control in accordance with the remaining capacity of the battery 16 without going through load control on the battery 16. Even with such a configuration, when the remaining capacity of the battery 16 is large and the amount of data of the DVD-Video 38 is small, the entire playback of the DVD-Video 38 can be automatically performed as in the first embodiment. .
  • the playback control method and the playback control program processing procedure determine whether or not the AC adapter 18 is present (step S311), detect the remaining battery capacity (step S312), DVD —After detecting the playback time of Video38 (Step S313), whether or not the entire playback of DVD-Video 38 is possible without going through Step S15 and Step S21 in the first embodiment. Judgment is made (step S314). If possible, after executing the processing of the flowchart of FIG. 5, the process proceeds to DVD-Video 38 playback (step S315) and normal application processing is executed (step S316).
  • the DVD-Video 38 can be reproduced entirely by controlling the reproduction of the DVD-Video 38 according to the remaining capacity of the battery 16.
  • FIG. 23 is a flowchart showing an example of the processing procedure of the playback control method and playback control program according to the fourth embodiment
  • FIG. 24 is a diagram showing the PC 2 displaying the selection dialog screen.
  • the remaining capacity of the battery 16 is detected and the power scheme of the PC 2 is detected, and then the playback time of the DVD-Video 38 is detected as in the third embodiment. Immediately after that, an application unnecessary for DVD-Video playback is terminated, and in the playback control, the partial high-speed playback mode is not set.
  • step S401 when playing a DVD-Video 38, the playback application is activated to determine whether or not the PC 2 has the AC adapter 18 (step S401). If the AC adapter 18 is connected (YES in step S401), the DVD-Video 38 playback proceeds without passing through step S402 or step S410 (step S411).
  • step S401 If AC adapter 18 is not connected (NO in step S401), the remaining capacity of battery 16 is detected, and the power scheme of PC2 is detected (step S402). It also calculates the bit rate for each DVD-Video38 chapter, stores the power consumption required to play back the data at that bit rate, and calculates the total power consumption by summing the power consumption of each chapter. Thus, the playback time of the DVD-Video 38 is detected (step S403). As described above, this playback time detection processing is executed by the DVD flow (playback time detection program shown in FIG. 6).
  • step S404 As a first stage of load control, an application unnecessary for DVD-Video 38 playback is terminated (step S404). As a result of closing this unwanted application, It is determined whether or not playback to the end of the DVD—Video 38 is possible with the remaining capacity (step S405). If playback to the end of the DVD—Video 38 is possible (YES in step S405), the process proceeds to playback of the DVD — Video 38. (Step S411). If the DVD-Video 38 cannot be played to the end (NO in step S405), the settings before playback are stored, and then the PC2 power scheme is changed as the second stage of load control (step S405). S40 6).
  • step S407 it is determined whether or not the remaining capacity of the battery 16 can be played to the end of the DVD—Video 38 (step S407). YES in S407), DVD-Video38 playback is started (step S411). If the DVD-Video 38 cannot be played to the end (NO in step S407), the remaining capacity of the notch 16 and the power required to play the DVD-Video 38 to the end are calculated, and the backlight of the possible backlight 42 is calculated. The light level (luminance) is calculated (step S408).
  • step S409 If the backlight level of the backlight 42 is reduced, it is determined whether or not the DVD—Video 38 can be played to the end with the remaining capacity of the battery 16 (step S409), and the DVD—Video 38 can be played to the end. If there is (YES in step S409), the backlight level before playback is memorized, then, as the third stage of load control, the backlight level is changed to a playable backlight level (step S410) and DVD—Video 38 is played (step 38). S411), after playback of DVD-Video 38, normal application processing is performed (step S412).
  • step S409 NO the bit rate of the DVD-Video 38 is detected and the fluctuation value of the bit rate is taken into account.
  • the power consumption required for playback at double speed is calculated for each DVD—Video38 chapter, whether it can be played to the end of the DVD—Video38, the chapter that can be played back, and the playback speed for playing back the Video38 to the end. Is determined (step S413).
  • step S4114 If playback beyond the chapter M is impossible due to this determination, the fact that playback up to chapter M is possible is notified and a playback mode selection dialog (Fig. 24) is displayed (step S414).
  • Step S415 If high-speed playback mode A is selected (YES in Step S415), the DVD-Video38 playback power consumption is compared with the remaining capacity of the battery 16, and playback to the end of DV D-Video38 is performed. The playback speed is changed to a possible playback speed (step S416), and the process proceeds to step S411 (DVD—Video 38 playback). In this case, move to step S410.
  • step S415 If fast playback mode A is selected (NO in step S415), it is determined whether normal playback mode B is selected or whether playback is complete (step S417), and normal playback mode C is selected. In this case, normal playback is started, and if there is no remaining capacity of the battery 16, as a normal process, the playback operation of PC2 is stopped and shut down (step S418), and the process is terminated (step S419). In this case, a warning message (Fig. 13) may be displayed.
  • the selection dialog display (step S414), the selection dialog 86 is displayed on the display screen 84 of the display unit 8, as shown in FIG.
  • the bonus video has f minutes.
  • FIG. 25 is a diagram illustrating the PC 2 according to the fifth embodiment.
  • the PC 2 of this embodiment includes a USB (Universal Serial Bus) connector 88 connected to the south bridge 54, and a drive device 90 that is a USB device is connected through the USB connector 88.
  • the drive device 90 is used for reproducing other recording media in addition to the DVD-Video 38 instead of the DVD drive 36.
  • the external drive device 90 using USB may use an interface other than US B!
  • a recording medium such as a DVD-Video as an example of the recording medium may be another optical disk or a magnetic disk.
  • the present invention is not limited to video reproduction, as the reproduction of recorded data may be the reproduction of character data including a power video illustrating a video.
  • the present invention relates to an electronic device that has a function of reproducing recorded data from a recording medium and can be driven by a battery, and can control reproduction of a recording medium such as a DVD-Video according to the remaining capacity of the battery. This is useful because it is possible to complete playback of the entire recording medium or playback up to a desired playback range, prevent interruption of playback, speed up operation, and the like.

Abstract

Cette invention propose un dispositif électronique (PC2) ayant une fonction de reproduction de données enregistrées à partir d'un support d'enregistrement (DVD-Video38) et étant capable d'être alimenté par une batterie (16). Le dispositif électronique comporte une section de commande (12), qui compare la capacité restante de la batterie avant ou pendant la reproduction avec la consommation de puissance nécessaire pour reproduire les données enregistrées, et lorsque la consommation de puissance dépasse la capacité restante, la section de commande commande la reproduction des données enregistrées afin de correspondre à la capacité restante. La section de commande compare la consommation de puissance à la capacité restante de la batterie, obtient une vitesse de reproduction à laquelle la reproduction de toutes les données enregistrées ou la reproduction des données enregistrées dans une plage précise peut être exécutée, et commande la reproduction du support d'enregistrement à une telle vitesse de reproduction.
PCT/JP2006/319602 2006-09-29 2006-09-29 Dispositif électronique, procédé et programme pour commander le dispositif électronique, et support d'enregistrement WO2008041308A1 (fr)

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JP2020064378A (ja) * 2018-10-15 2020-04-23 東京瓦斯株式会社 コミュニケーションシステムおよびプログラム
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