WO2008041308A1

WO2008041308A1 - Electronic device, method and program for controlling the electronic device, and recording medium

Info

Publication number: WO2008041308A1
Application number: PCT/JP2006/319602
Authority: WO
Inventors: Toshiro Ohbitsu
Original assignee: Fujitsu Limited
Priority date: 2006-09-29
Filing date: 2006-09-29
Publication date: 2008-04-10
Also published as: JP5083216B2; JPWO2008041308A1

Abstract

An electronic device (PC2) is provided with a function of reproducing recorded data from a recording medium (DVD-Video38) and is capable of being driven by a battery (16). The electronic device is provided with a control section (12), which compares the remaining capacity of the battery prior to or during reproduction with power consumption required for reproducing the recorded data, and when the power consumption exceeds the remaining capacity, the control section controls reproduction of the recorded data corresponding to the remaining capacity. The control section compares the power consumption with the remaining capacity of the battery, obtains a reproduction speed at which reproduction of the entire recorded data or reproduction of recorded data in a specific range can be performed, and controls the reproduction of the recording medium at such reproduction speed.

Description

Specification

Electronic device, control method thereof, control program thereof, and recording medium

Technical field

[0001] 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). In particular, 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.

Background art

[0002] When playing movies such as movies from DVD-Video using a PC that can be driven by a battery, the time required to drive the PC by the battery is taken into account when playing a DVD-Video with a long playback time. There is a need to. To drive the PC continuously, it is necessary to replace the battery or switch to a commercial alternating current (AC) power supply. Replacement of the battery requires a charged alternative battery, and switching to AC power requires the preparation of an AC adapter.

[0003] Regarding the playback of DVD-Video on such electronic devices such as battery-powered PCs, 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.

[0004] In 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.

[0005] 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.

[0006] 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.

[0007] 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.

[0008] 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.

[0010] 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.

[0011] Further, in 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.)

Disclosure of the invention Problems to be solved by the invention

[0012] By the way, even if the operable time is predicted from the remaining battery capacity and playback is changed to high-speed playback (Patent Document 1), power consumption increases for high-speed playback. If the interval is longer than the expected operation time, playback interruption cannot be avoided, and if the remaining battery capacity disappears during playback, the power is cut off and playback is interrupted.

[0013] In order to prevent such power interruption during reproduction, it is necessary to estimate the reproducible time and change the setting or switch to an AC power source. In addition, under battery operation, whether or not the setting change affects playback before playback, and even if the setting change affects playback, priority is given to playback while sacrificing it. I have been forced to play on the go. In an environment where the power source cannot be selected, such as outdoors, changing the setting was indispensable.

[0014] With regard to such problems, Patent Documents 1 to 9 do not disclose them, and do not disclose or suggest any means for solving the problems.

[0015] Therefore, 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.

[0016] 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.

Means for solving the problem

[0017] In order to achieve the above object, 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. 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. Here, 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. With this configuration, the above object is achieved. [0018] Further, when it is impossible to reproduce all of the recording data of the recording medium or the predetermined range with the remaining capacity of the battery, recording of the recording medium with the remaining capacity of the battery is performed by load control on the battery. It is determined whether or not all data can be reproduced or a predetermined range can be reproduced. If reproduction is possible, the load control is followed by reproduction. If reproduction is impossible, reproduction is performed after load control. Take control. With this configuration, the above object is achieved.

[0019] Specifically, for example, in a DVD-Video as a recording medium, 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.

[0020] Further, since the exhaustion of the battery can be reduced by the load control on the battery, 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.

[0021] In addition, by selecting a playback mode for setting a playback speed or the like prepared in advance from a dialog display screen displayed on the display unit, it is possible to automatically set the playback speed or the like, and playback or selection of the entire recording medium is possible. The degree of freedom in selecting the playback format has been expanded.

[0022] Therefore, in order to achieve the above object, 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.

[0023] In order to achieve the above object, in the electronic device, preferably, 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. Such a configuration can also achieve the above object. [0024] In order to achieve the above object, preferably, 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. Such a configuration also achieves the above object.

[0025] In order to achieve the above object, in the electronic device, it is preferable that 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 | movement stop of one or some function part, or an operation change. The above object can also be achieved by such a configuration.

[0026] In order to achieve the above object, preferably, the recording data includes video data in the electronic device. Such a configuration can also achieve the above object.

[0027] In order to 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.

[0028] In order to achieve the above object, in the electronic device, it is preferable that 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.

[0029] In order to achieve 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.

[0030] In order to achieve the above object, 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. In addition, it may be configured to notify that the reproduction of the recording medium stops within a specific recording data range. Such a configuration also achieves the above object.

[0031] In order to achieve the above object, in the electronic device, preferably 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.

[0032] In order to achieve the above object, in the electronic device, preferably, 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.

[0033] In order to achieve the above object, in the electronic device, preferably, 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. As a configuration that is the brightness of the backlight of the display unit to display. Such a configuration also achieves the above object.

[0034] In order to achieve the above object, in 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.

[0035] Further, in order to achieve the above object, 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. It is the structure including the step to control. With this configuration, the above object can be achieved. [0036] In order to achieve the above object, in 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.

[0037] In order to achieve the above object, in the control method of the electronic device, preferably, 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.

[0038] In order to achieve the above object, in the method for controlling an electronic device, preferably, 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. Such a configuration also achieves the above object.

[0039] In order to achieve the above object, in the control method of the electronic device, preferably, 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. Such a configuration can also achieve the above object.

[0040] In order to achieve the above object, in 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. [0041] In order to achieve the above object, in 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. Such a configuration also achieves the above object.

[0042] In order to achieve the above object, 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.

[0043] In order to achieve the above object, the 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. Such a configuration also achieves the above object.

[0044] In order to achieve the above object, 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.

[0045] In order to achieve the above object, preferably, in the control program for the electronic device, 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. Such a configuration also achieves the above object. [0046] In order to achieve the above object, 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. Including a step of displaying a plurality of selectable playback modes including a playback mode at a playback speed capable of playback up to a range of recorded data on the dialog screen, and playing back the recording medium in the playback mode selected from the playback modes. It is a configuration. Such a configuration also achieves the above object.

[0047] In order to achieve the above object, the 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. Such a configuration can also achieve the above object.

[0048] In order to achieve the above object, the 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. Such a configuration also achieves the above object.

[0049] In order to achieve the above object, 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. Is a configuration including a step of controlling reproduction of the recorded data in accordance with the remaining capacity. With this configuration, the above object is achieved.

[0050] In order to achieve the above object, preferably, in the computer-readable recording medium storing the control program for the electronic device, 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. With this configuration, the above object can be achieved. [0051] In order to achieve the above object, in a computer-readable recording medium storing a control program for the electronic device, preferably, the control program power is loaded on the battery before the recording medium is reproduced. If 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. When the recording medium is replayed and the reproduction is impossible, 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. With this configuration, the above object is achieved.

[0052] In order to achieve the above object, in the computer-readable recording medium storing the control program for the electronic device, it is preferable that 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.

[0053] In order to achieve the above object, in a computer-readable recording medium storing a control program for the electronic device, preferably, 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. With this configuration, the above object is achieved.

[0054] 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 The dialog display screen power displayed on the display unit Normal When the reproduction mode is selected, 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. With such a configuration, the above object is achieved.

[0055] In order to achieve the above object, in a computer-readable recording medium storing a control program for the electronic device, preferably 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.

The invention's effect

[0056] According to the present invention, the following effects can be obtained.

[0057] (1) Since playback control of a recording medium such as a DVD-Video is performed according to the remaining capacity of the battery, it is possible to complete playback of the entire recording medium or playback to a desired playback range.

, Playback interruption can be prevented.

[0058] (2) It is possible to save the trouble of manually setting the playback speed, simplify the operation, and speed up the start of playback.

[0059] (3) Even when moving outdoors or during transportation, it is possible to reproduce the entire recording medium or to the desired reproduction range without paying attention to the remaining capacity of the battery, and to prevent reproduction interruption.

[0060] Other objects, features, and advantages of the present invention will become clearer with reference to the accompanying drawings and each embodiment.

Brief Description of Drawings

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.

Explanation of symbols

2 PC (personal computer)

4 Power supply

6 Media reader

8 Display section

10 Audio section 12 Control unit

16 battery

34 Battery capacity detector

38 DVD— Video (recording medium)

42 Nokrai

56 Power control

58 Knocklight controller

60 INPUT CONTROL UNIT BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment]

A first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a block diagram showing a configuration example of a personal computer (PC) according to the first embodiment.

[0065] 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.

[0066] 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.

When the power switch 24 is conductive, the output of the AC adapter 18 is applied to the power circuit 26 and the charging circuit 28. 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. In addition, 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.

[0068] When the AC adapter 18 is disconnected or the power switch 24 is turned off, the battery 16 is released from charging, and only the output of the battery 16 is applied to the power circuit 26. Discharged state.

[0069] Therefore, 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. In this embodiment, it is also possible to use another recording medium force video information and audio information by using the force medium drive 37 exemplifying the reproduction of the DVD-Video 38!

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. [0072] 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.

[0074] 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.

For example, as shown in FIG. 2, 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.

[0076] 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.

[0080] In such a PC2, 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 .

[0081] By such 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. When power consumption is reduced by load control, 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.

[0082] According to such load control and Z or playback control, it is possible to automate playback of the entire DVD-Video 38 or playback of a specific range of recorded data, and playback without interrupting playback of the DVD-Video 38. . In addition, the manual setting of the playback speed can be saved, the operation can be simplified and the playback can be started quickly.

Next, video playback control of the PC 2 will be described with reference to FIG. FIG. 3 is a flowchart showing an example of the processing procedure of the video playback control method using PC2.

[0084] 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.

[0085] 1. Determination of drive power supply (step S1)

In this process, it is determined whether the driving force by the battery 16 is driven by the AC adapter 18.

When the DVD—Video playback application is started, 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).

[0087] 2. Judgment of whether or not the entire recording medium can be reproduced (step S2)

[0088] 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.

[0089] Therefore, information indicating the playback time of the DVD-Video 38 is read from the DVD-Video 38 set in the DVD drive 36 of the medium reader 6 through the DV D drive 36, and the power consumed by the PC 2 for the playback is read. calculate. This is power consumption. If the DVD-Vid eo38 information is read and the playback time is obtained, the power consumption required for DVD-Video 38 playback is almost constant regardless of the scene being recorded. The power consumption can be calculated in the case of full regeneration (up to the last power).

[0090] Further, 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.

[0091] Therefore, if the remaining capacity of the battery 16 is greater than the power consumption, the entire DVD-Video 38 can be played back, so the process proceeds to playback processing (step S5), and 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.

[0092] In this case, 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.

If the entire DVD-Video 38 cannot be played back, the following processing is executed.

[0094] 3. Whether load control and full regeneration are possible (step S3)

If the entire capacity of the DVD-Video 38 cannot be played with the remaining capacity of the notch 16, 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.

[0096] 3.1 Terminating unnecessary applications

[0097] DVD—An application unnecessary for playback of Video 38 is terminated, and a power check (power check A) is performed when the load on the battery 16 is reduced by terminating the application. 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.

[0098] 3.2 Reduced CPU performance

[0099] When an unnecessary application is terminated (3.1), the performance of the CPU 48 is reduced. As a result, the load on the battery 16 can be further reduced. Perform a power check (power check B) when the load on the battery 16 is reduced. This reduction in power consumption is equivalent to increasing the remaining capacity of the battery 16 accordingly. Therefore, if the performance of the CPU 48 is lowered, it is determined whether or not the entire DVD-Video 38 can be reproduced. If full playback is possible, the process proceeds to playback processing (step S5). Transition to stage power consumption reduction.

[0100] 3.3 Luminance reduction of backlight 42

[0101] Unnecessary application termination (3.1), reduced performance of CPU48 (3.2)!], 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.

[0102] To reduce the knock light level, 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).

[0103] 4. Playback mode selection and warning display (Step S4)

[0104] 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).

[0105] Selectable playback modes include the following playback modes.

[0106] 4.1 High-speed playback mode

[0107] 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.

[0108] 4.2 Partial high-speed playback mode

[0109] In the partial high-speed playback mode, 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.

[0110] 4.3 Normal playback mode

[0111] This playback mode is playback at normal speed.

Next, the playback control processing procedure will be described with reference to 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. In FIG. 4 and FIG. 5, A and B show the connection parts between the flowcharts. In FIGS. 4 and 5, the same reference numerals are given to the portions common to the flowchart of FIG.

[0113] As shown in Fig. 4, when playing DVD-Video 38, the playback application is started. 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.

[0114] 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.

[0115] Therefore, 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).

[0116] If the AC adapter 18 is not connected (NO in step S11), the remaining capacity of the battery 16 is detected (step S12). As described above, the detection of the remaining capacity is obtained by the detection information power of the battery capacity detection unit 34.

Also, the playback time of the set DVD-Video 38 is detected (step S13). In this case, 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).

[0119] DVD—If the entire playback of Video38 is not possible, the first stage of load control is DVD

An application unnecessary for playback of Video 38 is terminated (step S15). When this unnecessary application is terminated, 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.

[0120] As a result of ending unnecessary applications, 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.

[0121] As a result of changing the power skim of PC2, 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.

[0122] 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).

[0123] 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).

[0124] 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).

[0125] In the selection dialog display (Fig. 12), 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.

[0126] 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).

[0127] 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.

[0128] 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).

[0129] Next, DVD data processing (DVD flow) will be described with reference to FIGS. 6 and 7. FIG. FIG. 6 is a flowchart showing a DVD processing procedure, and FIG. 7 is a diagram showing a temporal change in the bit rate.

[0130] This DVD flow includes the detection of the bit rate of DVD-Video 38, its integration, and storage processing of the integral value.

[0131] Therefore, 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.

[0132] 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). Here, for the title Z chapter, 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.

[0133] 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.

[0134] So, before playing the DVD, read this bit rate pattern The power consumption required for playback is predicted. By using the estimated power consumption, you can determine the playback speed of DVD-Video38 and the playback speed that can play all DVD-Video38 (from beginning to end).

Next, the battery processing (battery flow) will be described with reference to FIG. FIG. 8 is a flowchart showing the procedure of battery processing.

[0136] 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.

[0137] Therefore, the model information of PC2 on which the application is running is obtained (step S51). 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).

[0138] After this processing, it is determined whether or not there is power with double speed playback (step S53). 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.

[0139] 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.

Next, double speed processing (double speed flow) will be described with reference to FIG. 9 and FIG. FIG. 9 is a flowchart showing the processing procedure of the double speed processing, and FIG. 10 is a diagram showing the data table 682. In FIG. 10, the same parts as those in FIG.

[0141] In this process, 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. Multiply the integration data (step S62), change the chapter block, change the DVD flow data (step S63), and terminate this process. Next, 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, and 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.

[0143] (Warning message display)

[0144] When playback is performed with the backlight level changed (step S21 and step S22 in FIG. 4), 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,

“Play with the backlight level changed. ]

And

[0145] (Selection dialog displayed)

In addition, when the remaining capacity of the battery 16 can be played back up to the chapter M of the DVD-Video 38, the selection dialog display 78 is displayed on the display screen 76 as shown in FIG. In this selection dialog display 78, 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,

[0147] “Playback will stop at chapter M of DVD—Video with the current battery level.

Please select the following.

A. Play at Ny double speed and play to the end.

B. Partial high-speed playback mode (Normal highlights are played back normally.)

C. Play as it is. Stops automatically when Chapter M playback ends. (No-manole play)

D. End playback. ]

Is displayed. [0148] In this selection dialog display 78, “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.

[0149] “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.

[0150] “C” corresponds to the normal playback mode (3.3) described above, and if this “C” is selected,

Play in normal mode. In this case, playback to the end of DVD—Video38 cannot be performed, and playback stops midway. To indicate this, “Automatically stops when Chapter M playback ends. ”And a warning message! /

[0151] "D" is the end of playback. If this "D" is selected, the playback ends without going to playback.

. That is, if this “D” is selected, it is possible to shift from the dialog display to the end of DVD-Video 38 playback.

[0152] (Warning message display)

[0153] When the normal playback mode (3.3) is selected, 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,

[0154] “With the current battery level, playback will stop at chapter M of DVD—Video. ]

[0155] is displayed. By displaying such a warning message 82, the user can know the chapter number of the chapter M to be interrupted or interrupted.

[0156] Further, in the warning message display (step S33) when the playback is ended, as shown in FIG. 14, a warning message 85 is displayed on the display screen 83 of the display unit 8, and the warning message 85 is, for example,

“End playback, restore all settings, and exit the application. Is displayed.

Next, power checks A, B, and C (FIGS. 5 and 15) will be described. 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.

[0158] 1) Power check A

[0159] This is a case where unnecessary applications for DVD playback are terminated to reduce the power consumption of PC2. If the power consumption of PC2 is reduced, the consumption of the battery 16 can be suppressed by that amount. If this is converted into the battery capacity, the battery capacity can be regarded as an increase corresponding to the suppression of the consumption. If the increase rate is Ka, this is the power check correction factor Ka. Therefore, by multiplying the current battery capacity P [mWh] of PC2 by the power check correction coefficient Ka, the current battery capacity (P XKa) [mWh] converted by power check A is obtained.

[0160] 2) Power check B

[0161] This is a case in which the power consumption of PC2 is reduced by terminating unnecessary applications and changing the power scheme of CPU48. As described above, if this is converted into battery capacity, the battery capacity can be regarded as an increase corresponding to the suppression of consumption. If the increase rate is Kb, this becomes the power check correction coefficient Kb. Therefore, by multiplying the current battery capacity P [mWh] by the power check correction coefficient Kb, the current battery capacity (P X Kb) [mWh] converted by the power check B is obtained.

[0162] 3) Power Check C

[0163] This is a case where the power consumption of the PC 2 is reduced by terminating unnecessary applications, changing the power scheme of the CPU 48, and reducing the brightness of the backlight 42. Similarly, if the increase rate in this case is Kc, this is the power check correction coefficient Kc. Therefore, by multiplying the current battery capacity P [mWh] of PC2 by the power check correction coefficient Kc, the current battery capacity (P XKc) [mWh] converted by power check B is obtained.

[0164] Since these power check correction factors Ka, Kb, and Kc are obtained by gradually reducing the power consumption, the capacity of the battery 16 is substantially increased by the amount of the reduction, and therefore the power is corrected. The check correction factors Ka, Kb, and Kc are greater than “1”, and the magnitude relationship between them is 1 <Ka <Kb <Kc. [0165] Then, by such a step-by-step process of power checks A, B, and C, the original electric energy [mWh] of battery 16 built in PC2, power checks A, B, and C and the remaining battery power at that time are stored. The capacity [%] can be estimated from the OS power scheme to accurately determine the remaining battery capacity at the start of DVD-Video 38 playback.

Next, the power consumption of each chapter of DVD-Video 38 and the remaining playable time in each power check A, B, C will be described with reference to FIG. 15 and FIG. FIG. 15 is a diagram showing the calculation processing of the power consumption of each chapter of DVD, and FIG. 16 is a diagram showing the calculation processing of the remaining time of the battery in the power check A, B or C.

[0167] As shown in FIG. 15, the title T1 of the DVD-Video 38 includes a plurality of chapters 01, 02.

'Last chapter N exists, and 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—Α, 01—Β, 0 チ -C ... Is the chapter block 02—Α, 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.

[0168] The bit rate within 5 minutes is used to calculate this power consumption, and the chapter block 01 — A, 01— B, ΟΙ -C ·, 02— Α ···, Ν ····· If each power consumption is 1A, 1B, 1C '.', 2A ···, Nn [mW], it can be calculated by the following calculation.

[0169] That is, the power consumption of chapter 01 from 0 to 5 minutes is

Bit rate X time (5 minutes 0 minutes) = 1A [mW] · · '(1)

The power consumption of Chapter 01 from 5 to 10 minutes is

Bit rate X time (10 minutes 5 minutes) = IB [mW] · · · · (2)

Also, the power consumption of Chapter 01 from 10 minutes to 15 minutes is

Bit rate X time (15 minutes-10 minutes) = 1C [mW] · · '(3)

It becomes. The power consumption of Chapter 02 from 0 minutes to 5 minutes is

Bit rate X time (5 minutes — 0 minutes) = 2A [mW] · ·-(4)

It becomes. The power consumption of the last chapter from XX minutes to YY minutes is

Bit rate X hours (YY minutes—XX minutes) = Nn [mW] · · · · (5) It becomes. As is clear from these formula powers, each power consumption is obtained from the product of the bit rate and time, and therefore is proportional to the bit rate and time.

As shown in FIG. 16, 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).

[0171] That is, the remaining time at the end of chapter 01—A is

Battery capacity [ _m Wh] X Power check correction factor (Ka, Kb or Kc) X Battery remaining capacity [%] ZlA [mW] = 01 A [hours]

••• (6)

And the remaining time at the end of Chapter 01—B is

Battery capacity [ _m Wh] X power check correction factor (Ka, Kb or Kc) X Battery remaining capacity [%] Z (1A + 1B) [mW] = 0 IB [hours]

…)

The remaining time at the end of Chapter 01—C is

Battery capacity [ _m Wh] X power check correction factor (Ka, Kb or Kc) X Battery remaining capacity [%] Z (1A + 1B + 1C) [mW]

= 01C [hours] ··· (8)

Power is also required. Also, the remaining time at the end of chapter 02—Α

Battery capacity [ _m Wh] X Power check correction factor (Ka, Kb or Kc) X Battery remaining capacity [%] 7 (1 + 1 + 1 + 1 + '''+ 28) [mW]

= 02A [hours] ··· (9)

Power is also required. The remaining time at the end of the last chapter チ is

Battery capacity [ _m Wh] X Power check correction factor (Ka, Kb or Kc) X Battery remaining capacity [%] Z (1 A + 1 B + 1 CH h 2 AH h Nn) [mW] = Nn [hours]

•••(Ten)

Power is required.

[0172] About the power check correction coefficient in the numerator of these equations (6), (7), (8), (9) and (10) If the power check correction factor is Ka, the remaining time for power check A, the power check correction factor is Kb, the remaining time for power check B, and the power check correction factor is Kc. For example, the remaining time for power check C is obtained.

[0173] Since the power check correction coefficient is in the numerator of the equations (6), (7), (8), (9) and (10), 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.

[0174] Next, calculation of power consumption for the playback mode will be described.

[0175] The integral value of the bit rate of the DVD-Video 38 title and chapter is multiplied by a coefficient indicating the playback mode (normal playback or high-speed playback) to obtain the power consumption required to play back the entire DVD-Video 38. Power consumption decreases with high-speed playback.

In this case, 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, and 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.

[0177] For high-speed playback and partial high-speed playback, 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. .

[0178] According to the first embodiment described above, features and advantages are listed as follows.

[0179] DVD—Changes the CPU operation and playback mode automatically according to the remaining capacity of the battery 16 before playing Video38, and starts playback.

[0180] 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. [0181] In the calculation of playback time based on recorded data, if the playback time of a file is simply used, for example, in DVD-Video with a variable bit rate, if the playback time is calculated only by the time of that chapter, the remaining playback time In order to avoid the occurrence of an error in time, the power consumption of the computer is calculated for each chapter in consideration of the fluctuation of the bit rate, and the calculation accuracy of the power consumption and playback time is improved. .

[0182] Further, since the playback speed is changed by adding the power consumption obtained for each chapter or the playback is performed at the normal speed, the start Z chapter can be automatically changed. This eliminates the need for the user to specify the playback section.

[0183] 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.

[0184] For the battery flow (Fig. 8), 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. As shown in FIGS. 18A and 18B, even when the percentage (%) is the same (95%), the display of the remaining time is greatly different. As shown in Fig. 17 and Fig. 18, the displayed remaining time decreases in proportion to the playback time that does not fluctuate rapidly. The notch flow (Fig. 8) also contributes to the correction of the battery 16 remaining capacity display.

[0185] By the way, assuming a PC to which the present invention is not applied, 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. Assuming that 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. By the way, the display of the remaining battery capacity of the OS is calculated at that moment, so in the display immediately after the start of DVD-Video playback, either DV D-Video is displayed as 1 hour 6 minutes. Let's go. The power of 1 hour 6 minutes at the start of DVD—Video playback Actually, even if playback is possible with “4 Mbps DVD—Video”, the display is “not playable” and incorrect information is presented to the user. It will be provided, and playback due to the battery will be stopped. Even if the power consumption at that moment is changed after playback, the power consumption after that is unknown. Therefore, after a few minutes, both are 2 hours and 10 minutes, and even after a certain amount of playback, the exact time cannot be calculated. Thus, if the bit rate is not recognized from the start of playback, the exact playback time cannot be displayed before playback. Such inconvenience can be eliminated by applying the above-described present invention.

[Second Embodiment]

[0187] Next, a second embodiment of the present invention will be described with reference to FIG. 19 and FIG.

FIG. 19 is a flowchart showing an example of the processing procedure of the reproduction control method according to the second embodiment, and 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.

[0188] The video playback control method according to the present embodiment, as shown in FIG.

(Step S201), power consumption reduction and full playback availability (Step S202), playback mode determination and selection (Step S203), playback processing (Step S204) In the embodiment (FIG. 3), 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.

[0189] Therefore, with respect to the playback control method and the playback control program processing procedure, as shown in FIG. 20, 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, step S221i, step S22 in FIG. 4, and step S222 are the same as step S23 in FIG. In the flowchart shown in FIG. 20, reference symbols _A and B are the flowcharts of the first embodiment (FIG. 5).

).

[Third Embodiment]

[0191] Next, a third embodiment of the present invention will be described with reference to Figs.

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.

[0192] The video playback control method according to the present embodiment, as shown in FIG.

(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). In Fig. 3), the reduction of power consumption and the determination of the possibility of full regeneration (step S3) are omitted.

In this embodiment, for example, 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. .

[0194] Therefore, as shown in Fig. 22, 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).

Also by such processing, as described above, 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.

[Fourth embodiment]

Next, a fourth embodiment of the present invention will be described with reference to FIG. 23 and FIG.

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, and FIG. 24 is a diagram showing the PC 2 displaying the selection dialog screen. In FIG. 24, the same parts as those in FIG.

In the fourth embodiment, 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.

Therefore, as shown in FIG. 23, 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).

) o

[0200] 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).

[0201] 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).

[0202] As a result of changing the power scheme of PC2, 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).

[0203] 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).

[0204] Also, if the DVD-Video 38 cannot be played to the end (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).

[0205] 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).

[0206] In the selection dialog display (Fig. 24), it is determined whether or not the force is high when fast playback mode A is selected. (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.

[0207] 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.

[0208] When normal playback mode B is selected, that is, when playback end is selected, all settings are restored, a warning message (Fig. 14) is displayed, normal playback is performed, The application is terminated (step S420).

In this case, in 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.

“Playback stops at chapter M of DVD—Video with the current battery level. Please select the following.

A. Play at Ny double speed and play to the end.

B. Play as it is.

Stops automatically when Chapter M playback ends. The bonus video has f minutes.

C. End playback. ]

Is displayed.

[0210] Fifth Embodiment

Next, a fifth embodiment of the present invention will be described with reference to FIG. FIG. 25 is a diagram illustrating the PC 2 according to the fifth embodiment. In FIG. 25, the same parts as those in FIG. [0212] 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.

[0213] Even when a recording medium such as a DVD-Video 38 is played back using the external drive device 90, load control or playback control corresponding to the remaining capacity of the battery 16 is executed, and the entire recording medium is played back or Playback to a specific range can be performed.

[0214] In this embodiment, the external drive device 90 using USB may use an interface other than US B!

[0215] [Other embodiments, etc.]

[0216] Modifications, features, and the like of the above embodiment are listed below.

[0217] (1) In the above embodiment, a recording medium such as a DVD-Video as an example of the recording medium may be another optical disk or a magnetic disk.

[0218] (2) In the above embodiment, 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.

(3) Even during playback, if the configuration is such that the remaining capacity of the battery 16 is constantly monitored and the playback speed is controlled, the entire DVD-Video playback or playback within a predetermined range can be performed reliably.

[0220] As described above, the most preferable embodiment of the present invention has been described. However, the present invention is described in the scope of claims which are not limited to the above description or disclosed in the specification. It goes without saying that various modifications and changes can be made by those skilled in the art based on the gist of the present invention, and such modifications and changes are included in the scope of the present invention.

Industrial applicability

[0221] 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.

Claims

The scope of the claims

[1] Recording medium power An electronic device that has a function of reproducing recorded data and can be driven by a battery,

The remaining capacity of the battery before or during playback is compared with the power consumption necessary for playback of the recorded data. If the power consumption exceeds the remaining capacity, the recorded data according to the remaining capacity. Electronic device comprising a control unit for controlling reproduction of video

[2] In the electronic device of claim 1,

The control unit compares the power consumption with the remaining capacity of the battery, obtains a reproduction speed at which the entire recording medium or a specific recording data range can be reproduced, and determines the reproduction speed of the recording medium. An electronic device characterized by controlling reproduction.

[3] In the electronic device of claim 1,

If the control unit performs load control for reducing the load on the battery before reproducing the recording medium, it is possible to reproduce all of the recorded data on the recording medium or reproduce a predetermined range. If the reproduction is possible, the process shifts to the reproduction of the recording medium after the load control. If the reproduction is not possible, the load control is followed by the remaining capacity of the battery. An electronic apparatus characterized by controlling reproduction of the recorded data.

[4] In the electronic device of claim 3,

The load control is not directly related to the reproduction of the recording medium, either stop of one or a plurality of functions, change of power organization of a function unit, or stop or change of operation of one or a plurality of function units. An electronic device, wherein the load on the battery is reduced by one or more selected from the above.

[5] In the electronic device of claim 1,

The electronic device, wherein the recording data includes video data.

[6] In the electronic device of claim 1, An electronic device characterized by that.

[7] In the electronic device of claim 1,

The power consumption is power consumption expected for full reproduction of the recording medium or reproduction to a specific range of the recording medium, and is calculated using the data amount of the recording data. Electronic equipment.

[8] In the electronic device of claim 1,

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 be selected including a playback mode of a playback speed at which playback of the entire recording medium or playback up to a specific recording data range is possible. An electronic apparatus, wherein a plurality of playback modes are displayed on a dialog screen of the display unit, and the recording medium is played back in a playback mode selected from the playback modes.

[9] In the electronic device of claim 8,

Dialog display screen power displayed on the display section When the normal playback mode is selected, a warning display screen is displayed on the display section, and playback of the recording medium is stopped within a specific recording data range. An electronic device characterized by an announcement.

[10] In the electronic device of claim 4,

One or a plurality of functions not directly related to reproduction of the recording medium is one or a plurality of applications not directly related to reproduction of the recording medium.

[11] In the electronic device of claim 4,

The electronic device characterized in that the change in the power organization of the functional unit is a change in the power scheme of the control unit.

[12] In the electronic device of claim 4,

The electronic device characterized in that the operation change of one or a plurality of function units not directly related to the reproduction of the recording medium is a luminance of a backlight of a display unit that displays a reproduction output of the recording data.

[13] In the electronic device of claim 12,

An electronic device characterized in that, when the backlight level of the backlight of the display unit is changed, a message indicating the change of the backlight level is displayed on the display unit when the display is shifted to reproduction.

[14] Recording medium power A method for controlling an electronic device having a function of reproducing recorded data and capable of being driven by a battery,

The remaining capacity of the battery before or during playback is compared with the power consumption necessary for playback of the recorded data. If the power consumption exceeds the remaining capacity, the recorded data according to the remaining capacity. A method for controlling an electronic device comprising the step of controlling reproduction of the electronic device.

[15] In the method for controlling an electronic device according to claim 14,

Comparing the power consumption with the remaining capacity of the battery, obtaining a playback speed at which playback of the entire recording medium or playback of a specific recording data range is possible, and controlling playback of the recording medium to the playback speed A method for controlling an electronic device, comprising:

[16] In the method for controlling an electronic device according to claim 14,

If the load control for reducing the load on the battery is performed before the reproduction of the recording medium, it is determined whether or not the whole recording data of the recording medium or the reproduction of a predetermined range is possible. If the reproduction is possible, the process shifts to the reproduction of the recording medium after the load control. If the reproduction is impossible, the reproduction of the recording data is performed according to the remaining capacity of the battery after the load control. A method for controlling an electronic device comprising a step of controlling the electronic device.

[17] In the method for controlling an electronic device according to claim 16,

The load control is not directly related to the reproduction of the recording medium, either stop of one or a plurality of functions, change of power organization of a function unit, or stop or change of operation of one or a plurality of function units. A method for controlling an electronic device, wherein the load on the battery is reduced by one or more selected from the above.

[18] In the method for controlling an electronic device according to claim 14,

Comparing the power consumption with the remaining capacity of the battery, A plurality of selectable playback modes including a playback mode with a playback speed capable of playback up to a specific recording data range are displayed on the dialog screen, and the recording medium is played back in the playback mode selected from the playback modes. A method for controlling an electronic device.

[19] In the method for controlling an electronic device according to claim 14,

The dialog display screen power displayed on the display unit displays a warning display screen when the normal playback mode is selected, and notifies that the playback of the recording medium stops within a specific recording data range. A method for controlling an electronic device.

[20] In the method for controlling an electronic device according to claim 14,

When the backlight level of the knock light on the display unit that displays the playback output is changed, if the display shifts to playback, a message indicating the change in the backlight level is displayed on the display unit. And a method for controlling an electronic device.

[21] A control program for an electronic device that is executed by a computer and has a function of reproducing recording data, and can be driven by a battery.

The remaining capacity of the battery before or during playback is compared with the power consumption necessary for playback of the recorded data. If the power consumption exceeds the remaining capacity, the recorded data according to the remaining capacity. A control program for an electronic device, comprising a step of controlling reproduction of the electronic device.

[22] In the electronic device control program according to claim 21,

Comparing the power consumption with the remaining capacity of the battery, obtaining a playback speed at which playback of the entire recording medium or playback of a specific recording data range is possible, and controlling playback of the recording medium to the playback speed A control program for an electronic device, comprising:

[23] In the electronic device control program according to claim 21,

If the load control for reducing the load on the battery is performed before the reproduction of the recording medium, it is determined whether or not the whole recording data of the recording medium or the reproduction of a predetermined range is possible. If the reproduction is possible, the process shifts to the reproduction of the recording medium after the load control. If the reproduction is impossible, the reproduction of the recording data is performed according to the remaining capacity of the battery after the load control. Including a step of controlling Electronic equipment control program.

[24] In the electronic device control program according to claim 21,

The load control is not directly related to the reproduction of the recording medium, either stop of one or a plurality of functions, change of power organization of a function unit, or stop or change of operation of one or a plurality of function units. A control program for electronic equipment, comprising a step of reducing a load on the battery by one or more selected from the above.

[25] In the electronic device control program according to claim 21,

A dialog for selecting a plurality of selectable playback modes, including a playback mode that allows playback of the entire recording medium or playback up to a specific recording data range by comparing the power consumption and the remaining capacity of the battery. A control program for an electronic device, comprising: a step of displaying on a screen and reproducing the recording medium in a reproduction mode selected from the reproduction mode.

[26] In the electronic device control program according to claim 21,

A step of displaying a warning display screen when the normal playback mode is selected, and notifying that the playback of the recording medium is stopped within a specific recording data range. A control program for electronic equipment, characterized in that

[27] In the electronic device control program according to claim 21,

Including a step of displaying a message indicating the change of the backlight level on the display unit when the backlight level of the knock light of the display unit for displaying the reproduction output is changed, when the display shifts to the reproduction. A control program for an electronic device.

[28] Recording medium power A computer-readable recording medium storing a control program for a battery-driven electronic device having a function of reproducing recorded data,

The control program compares the remaining capacity of the battery before or during playback with the power consumption necessary for playback of the recorded data, and if the power consumption exceeds the remaining capacity, the remaining capacity. A computer-readable recording medium storing a control program for an electronic device, comprising a step of controlling reproduction of the recording data in accordance with a capacity.

[29] In a computer-readable recording medium storing the control program for the electronic device according to claim 28,

The control program compares the power consumption with the remaining capacity of the battery to obtain a reproduction speed at which the recording medium can be reproduced entirely or within a specific recording data range, and the recording medium is set at the reproduction speed. The computer-readable recording medium which stored the control program of the electronic device characterized by including the step which controls reproduction | regeneration of electronic equipment.

[30] In a computer-readable recording medium storing the control program for the electronic device according to claim 28,

If the control program performs load control for reducing the load on the battery before reproducing the recording medium, it is possible to reproduce all of the recorded data on the recording medium or reproduce a predetermined range. If the reproduction is possible, the process shifts to the reproduction of the recording medium after the load control. If the reproduction is not possible, the load control is followed by the remaining capacity of the battery. And a computer-readable recording medium storing a control program for an electronic device, comprising a step of controlling reproduction of the recorded data.

[31] In a computer-readable recording medium storing the control program for electronic equipment according to claim 28,

The load control is not directly related to the reproduction of the recording medium, either stop of one or a plurality of functions, change of power organization of a function unit, or stop or change of operation of one or a plurality of function units. A computer-readable recording medium storing a control program for an electronic device, wherein the load on the battery is reduced by one or more selected from the above.

[32] In a computer-readable recording medium storing the control program for the electronic device according to claim 28,

The control program compares the power consumption and the remaining capacity of the battery, and 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. The playback mode is displayed on a dialog screen, and the recording medium is played back in the playback mode selected from the playback mode. A computer-readable recording medium storing a control program for an electronic device.

[33] In a computer-readable recording medium storing the control program for electronic equipment according to claim 28,

When the normal playback mode is selected from the dialog display screen displayed on the display unit by the control program, a warning display screen is displayed and playback of the recording medium is stopped within a specific recording data range. The computer-readable recording medium which stored the control program of the electronic device characterized by including the step which announces this.

[34] In a computer-readable recording medium storing the control program for an electronic device according to claim 28,

When the control program changes the backlight level of the backlight of the display unit that displays the playback output, when the control program shifts to playback, a message indicating the change of the backlight level is displayed on the display unit. A computer-readable recording medium storing a control program for an electronic device, comprising: a display step.