JP2002023896A - Electronic device and control method thereof - Google Patents

Abstract

(57) [Problem] To provide an electronic device and a control method thereof that can surely execute data processing that consumes a large amount of current. SOLUTION: The portable information device 100 is a cradle 118.
The cradle detecting unit 116
, The connection of the cradle 118 is detected (step S601), and the output from the power supply detection control unit 114 detects that power is supplied from the external power supply unit 119 (step S603).
(YES in step S60), the data processing unit 120 executes a process that consumes a large amount of current, such as an encoding process, which has been registered by writing the flag data (step S60).
6).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device and a control method therefor, and more particularly to an electronic device that executes data processing that consumes a large amount of current and a control method therefor.

[0002]

2. Description of the Related Art Conventionally, in an electronic device, such as a portable information device, which supplies power for executing predetermined data processing by a battery, for example, when executing data processing that consumes a large amount of current, the voltage of the battery is determined in advance. The data processing is executed when the voltage is higher than the threshold value, or the data processing is interrupted when the voltage becomes lower than the predetermined threshold value when the data processing is executed.

[0003]

SUMMARY OF THE INVENTION However, CPU
When a high-speed operation of a digital signal processor (DSP) or the like is performed, the peak current consumption is large and the voltage drops sharply. In some cases, the operation of the main body of the portable information processing apparatus becomes impossible. In order to cope with this problem, it is necessary to select a large battery in both weight and size in order to increase the capacity of the battery, or to execute data processing that consumes a large amount of current on another device (such as a personal computer).

An object of the present invention is to provide an electronic device capable of reliably executing data processing that consumes a large amount of current and a control method thereof.

[0005]

To achieve the above object, an electronic apparatus according to claim 1 is connected to the external power supply when the electronic apparatus is placed at a predetermined position on a cradle having an external power supply for supplying power. An electronic device configured to detect that power has been supplied from the external power supply unit, and when it has been detected that power has been supplied from the external power supply unit, Data processing means provided outside the electronic device and performing data processing that consumes a large amount of current is provided with execution means for executing the data processing.

According to a second aspect of the present invention, there is provided the electronic apparatus according to the first aspect, wherein the data processing means is provided in the cradle, and the electronic apparatus is connected to the cradle. Means, wherein the execution means causes the data processing means to execute the data processing when it is detected that power is supplied from the external power supply unit connected to the cradle.

According to a third aspect of the present invention, in the electronic device according to the second aspect, the cradle detects that the electronic device is connected to the cradle and power is supplied from the external power supply unit. In some cases, a high-speed clock supply unit that supplies a high-speed clock to the electronic device to speed up the data processing is provided.

The electronic device according to the fourth aspect is the electronic device according to the first to third aspects.
3. The electronic device according to claim 1, wherein the electronic device includes a battery for supplying power, and the external power supply unit has a higher power supply voltage than the battery.

According to a fifth aspect of the present invention, there is provided the electronic apparatus according to the fourth aspect, further comprising storage means for storing the data to be processed when power is supplied from the battery. .

According to a sixth aspect of the present invention, in the electronic apparatus according to the fifth aspect, when it is detected that power is supplied from the external power supply unit while being connected to the cradle, the stored data is stored. Is displayed, and the execution means selectively causes the data processing means to execute processing of data designated by the operator among the data displayed by the display means.

According to a seventh aspect of the present invention, in the electronic device according to the sixth aspect, it is detected that the display unit is connected to the cradle, and the power supply is supplied from the external power supply unit. When not detected, a message to that effect is displayed as a message.

An electronic device according to an eighth aspect is the electronic device according to any one of the first to seventh aspects, wherein the electronic device is a portable information device.

According to another aspect of the present invention, there is provided a method of controlling an electronic apparatus, wherein the electronic apparatus is connected to the external power supply when the cradle is placed at a predetermined position. A detection method for detecting that power has been supplied from the external power supply unit, and detecting that power has been supplied from the external power supply unit. Data processing means provided outside the electronic device and performing data processing that consumes a large amount of current has an execution step of executing the data processing.

According to a tenth aspect of the present invention, there is provided a method for controlling an electronic device, comprising:
10. The control method of an electronic device according to claim 9, wherein the data processing means is provided in the cradle, and the control method of the electronic device includes another detecting step of detecting that the electronic device is connected to the cradle. Wherein in the execution step, when it is detected that power is supplied from the external power supply unit connected to the cradle, the data processing unit executes the data processing.

[0015] A control method of an electronic device according to claim 11 is as follows.
11. The electronic device control method according to claim 10, wherein the cradle outputs a high-speed clock to the electronic device when it is detected that the electronic device is connected to the cradle and power is supplied from the external power supply unit. A high-speed clock supply unit that supplies data to a device to speed up the data processing is provided.

According to a twelfth aspect of the present invention, there is provided a method for controlling an electronic device.
The method of controlling an electronic device according to claim 9, wherein the electronic device includes a battery that supplies power, and the external power supply unit has a higher power supply voltage than the battery. .

According to a thirteenth aspect of the invention, there is provided a method for controlling an electronic device, comprising:
13. The method of controlling an electronic device according to claim 12, wherein the electronic device has a storing step of storing the processed data when power is supplied from the battery.

According to a fourteenth aspect of the present invention, there is provided a method for controlling an electronic device, comprising:
14. The method of controlling an electronic device according to claim 13, further comprising a display step of displaying the stored data when it is connected to the cradle and when it is detected that power is supplied from the external power supply unit. , In the execution step,
It is characterized in that the data processing means selectively executes processing of data designated by the operator among the data displayed in the display step.

According to a fifteenth aspect of the present invention, there is provided a method for controlling an electronic device, comprising:
15. The method of controlling an electronic device according to claim 14, wherein in the displaying step, when the connection to the cradle is detected and the supply of the power from the external power supply unit is not detected. Is displayed as a message.

A control method for an electronic device according to claim 16 is
The method for controlling an electronic device according to any one of claims 9 to 15, wherein the electronic device is a portable information device.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an electronic apparatus according to an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of an electronic device according to the first embodiment of the present invention.

In FIG. 1, a portable information device 100 as an electronic device is mainly constituted by a CPU 101 and each component connected to the CPU 101. The components include a ROM 102, a RAM 103, a data storage unit 104, a data processing unit 105, a camera module 106, an LCD control unit 107, a tablet control unit 110, a power detection control unit 1
14, the cradle detecting unit 116, and the key SW 117
And an AD / DA conversion unit 121.

The LCD control unit 107 has a display unit 1
09 is connected via the display drive unit 108, the tablet control unit 110 is connected to the handwriting tablet 111 arranged on the display unit 109, the AD / DA conversion unit 121 is connected to the microphone 122 and the speaker 123, A battery 115 is connected to the power detection control unit 114. Further, the power detection control unit 114 is connected to the CPU 101 via the DC / DC converter 113.

The cradle 118 serving as a cradle of the portable information device 100 includes an external power source 119 and a data processing unit 1.
20. Portable information device 100 is cradle 11
8 is placed in the receiving section 300 (predetermined position) (FIG. 3),
The CPU 101 is connected to the data processing means 120 via a bus.

The ROM 102 stores various control programs executed by the CPU 101.

The RAM 103 includes an image development area 103a to be described later, a work area 103b for processing data of various programs, a VRAM 103c for storing data to be displayed on the display unit 109, a temporary save area 103d for temporarily saving various data, and the like. An area 103e is provided. The image development area 103a is used for temporarily storing YUV digital image data sent from the camera module 106 and various image data read from the data storage unit 104, and for image compression / decompression processing. It is used as a work area exclusively for images.

The data storage unit 104 stores various types of user data, specifically, JPEG, MPEG-compressed image data, YUV digital image data, audio data, and various ancillary data referred to by applications in a file format. Memory, for example, a flash memory.

The data processing means 105 includes a still image, a moving image,
Various compressed data such as audio are decoded for each compression format and the like, and converted into a format that can be reproduced by the portable information device 100.

The camera module 106 includes a lens unit, C
CD (photoelectric conversion element), timing generator, A /
It is composed of a D conversion circuit, an image processing DSP, and the like, and captures image data before compression (hereinafter, referred to as “YUV digital image data”) by a signal from a CPU 101 described later.
And operations such as adjustment of AE and white balance.

The LCD control unit 107 receives the YUV digital image data transferred from the camera module 106 or the YUV digital image data decoded by the data processing unit 105 with respect to the image file in the data storage unit 104, and receives the RGB digital image data. After being converted into a signal, the signal is output to the display drive unit 108 and the display drive unit 10
An image is displayed on the display unit 109, which is a TFT color liquid crystal, via the display unit 8.

The tablet control unit 110 converts various kinds of information input by driving control of the handwriting tablet 111 and touching with a pen into digital signals,
Control to transfer to.

The AD / DA converter 121 includes a microphone 122
To convert the analog data inputted from the speaker into digital data, and convert the digital data into analog data to be outputted from the speaker 123 (used for recording and reproducing voice data).

The DC / DC converter 113 converts the voltage obtained from the battery 115 connected to the power supply detection control unit 114 or the power supplied from the external power supply unit 119 into each voltage required by each circuit. Supply. The power supply detection control unit 114 (detection unit) notifies the CPU 101 when the supply voltage from the external power supply unit 119 or the decrease in the voltage of the battery 115 is detected, and controls the charge of the battery 115 and the DC / DC in The supply stop and start of the plurality of voltages supplied by the converter 113 are controlled.

Cradle detecting section 116 (other detecting means)
The external power supply unit 119 for detecting whether or not the portable information device 100 is connected to the cradle 118 when the portable information device 100 is
18, when the portable information device 100 is placed in the receiving unit 300, the portable information device 100 is connected to the power detection control unit 114,
Power is supplied to the portable information device 100 via the DC converter 113.

The data processing means 120 includes the cradle 11
8 is connected to the portable information device 100, and is controlled by a CPU 101, which will be described later, via a bus to encode data such as still images, moving images, and audio into various compression formats. Processing that consumes more current than processing performed by the processing unit 105 is performed.

The CPU 101 includes a camera module 106
Directly output the YUV digital image data output from the RAM 10
3, a process of DMA transfer of various data from the RAM 103 directly to the LCD control unit 107, a process of transferring image data to the data processing means 105 and 120 to perform decoding and encoding such as JPEG and MPEG compression, and data storage. A process of storing various data in a file format in the means 104, a process of detecting the cradle 118 by the cradle detecting unit 116, a process of charging / discharging the battery 115 by the power detection control unit 114, and an input from the handwriting tablet 111 and the key SW 117 And execute various applications according to the information.

FIG. 2 is an external view of the portable information device 100 of FIG. 1, (a) is a view as viewed from the camera side, and (b)
Is a view from the cradle connection side.

In FIG. 2, a handwriting tablet 111 is arranged on a display unit 109 on the upper surface of the portable information device 100, and a key 20 corresponding to the key SW 117 is arranged therearound.
4 to 206 are arranged. In addition, the portable information device 100
On the side of the camera, a shutter SW 207 for controlling the opening and closing of the shutter of the camera, a switch 208 for detecting connection with the camera module 106 and the cradle 118 (cradle detecting unit 116), and a power supply for supplying power from the external power supply unit 119 Terminals 209 and 210 and a connection terminal 211 for bus-connecting the data processing means 120 to the CPU 101 are arranged.

Further, the pen 202 is connected to the handwriting tablet 1
11 is used when the operator inputs an instruction such as menu selection.

FIG. 3 is an external view of the cradle 118 in FIG.

In FIG. 3, the cradle 118 has a convex portion 301, terminals 302, 303, and a terminal 304 in a receiving portion 300, and a power cord 305 for the cradle 118 is disposed on the back side of the cradle 118. .

When the portable information device 100 is placed on the receiving portion 300, the switch 208 is turned on by the convex portion 301, and the terminal 304 and the connection terminal 211 are connected to connect the data processing means 120 in the cradle 118 to the CPU.
101 and a terminal 302, 303
And terminals 209 and 210 are connected. Further code 305
Is connected to an outlet, the external power supply 11
9 to supply a voltage suitable for the main body 201.

FIG. 4 is a flowchart showing a mode selection process of portable information device 100 in FIG.

In FIG. 4, when the power is turned on (step S401), the data in the RAM 103 is cleared,
Initial values of various flags used in the application and the like, and initial values such as turning on the backlight of the display unit 109 are set (step S402).

Next, in step S403, a menu for selecting various modes, which is the initial screen of the portable information device 100, is displayed on the display unit 109 (step S40).
3) When the operator inputs the selection mode using the keys 204 to 206 or the handwriting tablet 111, the input mode is determined (step S404). If it is determined in step S404 that the selected mode is the camera mode, camera mode processing is executed (step S405). If it is determined that the selected mode is the moving image shooting mode, moving image shooting mode processing is executed. Then, if it is determined that the selection mode is the viewer mode, the viewer mode processing is executed (step S407). When each mode process ends, the process advances to step S403.

FIG. 5 is a flowchart showing the moving image shooting mode processing in step S406 in FIG. still,
The moving image shooting mode process is executed while the shutter SW 207 is ON.

In FIG. 5, when the moving image shooting mode process is started and the camera module 106 is turned on (step S502), the display of the image taken into the display unit 109 as a liquid crystal finder is started (step S50).
3).

In step S 503, the camera module 106 performs processing such as auto white balance and AE on the image data captured from the CCD through the lens, converts the image data into a YUV signal, and transmits the YUV signal to the CPU 101. The YUV signal is further written by the CPU 101 into the VRAM 103c for storing display image data, and is constantly transferred to the LCD control unit 1 by DMA transfer.
07. The LCD control unit 107 executes a process of converting the output YUV signal into an RGB signal, and outputs the RGB signal to the display driving unit 108. The display drive unit 108 outputs the output RGB signals to the display unit 109 to display a subject image, thereby starting the function of the liquid crystal finder.

Next, in step S504, it is determined whether or not an instruction to cancel the moving image shooting mode has been received from the operator. If an instruction to cancel the moving image shooting mode has been received, the process proceeds to step S403 in FIG. 4 to display a menu. , And executes the processing after step S404. On the other hand, step S5
If the result of determination in step 04 is that no instruction to release the moving image shooting mode has been received, it is determined whether or not the shutter SW 207 is ON (step S505).

If the result of determination in step S 505 is that the shutter SW 207 is not ON, step S 5
04, if the shutter SW 207 is ON, the YUV digital image data for one frame
After temporarily storing the data in the AM 103a, the data storage unit 104
(Step S506). Data storage means 10
It is assumed that the time between frames of the image data stored in No. 4 is set to an interval corresponding to the compression processing (encoding).

Each time one frame of YUV digital image data is stored in the process of step S506, it is determined in step S507 whether or not the shutter SW is turned off. (YES in step S507), instruction waiting data (hereinafter, “flag data”) for instructing that the uncompressed captured moving image file stored in the data storage unit 104 be encoded when the main body is connected to the cradle 118. Is written in the work area 103b to perform encoding registration (step S508), and the process returns to step S503.

According to the processing of FIG. 5, moving image shooting can be performed repeatedly.

FIG. 6 is a flowchart showing an interrupt process when the portable information device 100 of FIG. 1 detects a cradle.

In FIG. 6, when the portable information device 100 is placed in the receiving section 300 of the cradle 118, it is detected from the output from the cradle detecting section 116 that the cradle 118 is connected (step S601), and the current execution is performed. The current mode processing ends (step S602).
Next, based on the output from the power supply detection control unit 114, it is detected whether or not the power is supplied from the external power supply unit 119 (step S603). The process proceeds to step S701 of the interrupt process. On the other hand, when it is detected that the power is supplied, a charging process for charging the battery 115 is started (step S604). Thereafter, it is determined whether or not the flag data exists (step S605). If the flag data does not exist, the process is terminated. If the flag data exists, the process registered and encoded by executing the flag data is executed. After storing the processed data as a file in the data storage unit 104 (step S606), the processing ends.

FIG. 7 is a flowchart showing an interrupt process when the external power supply of portable information device 100 in FIG. 1 is detected. This process is started when power is not supplied in step S603 in FIG.

In FIG. 7, the power supply detection control unit 1
When it is detected from the output from 14 that power has been supplied from the external power supply unit 119 (step S701), charging of the battery 115 is started (step S702).
Next, based on the output from the cradle detecting unit 116, it is detected whether or not the cradle 118 is connected (step S703). If it is detected that the cradle 118 is connected, the process proceeds to step S704, where the cradle 118 is connected.
When it is detected that is not connected, the process returns to step S601 of the interrupt processing of FIG. 6 again.

Next, in step S704, the presence / absence of flag data is determined. If the flag data is not present, the present process is terminated. If the flag data is present, the flag data is written and registered. Is executed (step S705), the processed data is stored in the data storage unit 104 as a file, and the process ends.

According to the first embodiment, when the portable information device 100 is placed in the receiving section 300 of the cradle 118, it is detected from the output from the cradle detecting section 116 that the cradle 118 is connected ( Step S6
01), and when it is detected from the output from the power supply detection control unit 114 that power is supplied from the external power supply unit 119 (YES in step S603), the processing registered by encoding flag data to perform processing registered by encoding. Executed by the data processing means 120 (step S60)
6) Therefore, it is possible to encode moving image photographed data photographed when the battery 115 is driven despite high current consumption.

In this embodiment, the encoding of moving image photographing data which consumes a large amount of current is executed when power is supplied from an external power supply. However, encoding of data such as audio and still images, or encoding of audio, still images and moving images is performed. May be executed when the cradle is connected. Furthermore, the battery 11
The effect can be obtained for any data processing that consumes a large amount of current with respect to the 5-drive time.

FIG. 8 is a block diagram showing a configuration of an electronic device according to the second embodiment of the present invention.

In the second embodiment, the portable information device 80
By supplying a high-speed clock signal and a high voltage from the cradle 818 when the cradle 818 is connected to 0, data processing with high current consumption is speeded up.

In FIG. 8, portable information device 800 is the same as portable information device 100 of the first embodiment, and cradle 818 is cradle 11 of the first embodiment.
8 is basically the same as that of FIG. 8, except that a clock supply unit 801 for supplying a clock signal is provided.

In FIG. 8, when the portable information device 800 is connected to the cradle 818 and detects that power is supplied from the external power supply unit 119, the clock supply unit 801 operates at a higher speed than the clock used in the portable information device 800. Supply a high-speed clock to speed up data processing. When detecting that the portable information device 800 is connected to the cradle 818 and then detecting that power is being supplied, the power supply detection control unit 114 operates the portable information device 800 at a higher speed than when the battery 115 is driven. Supply a high voltage.

According to the portable information device 800 shown in FIG. 8, since a high-speed clock signal and a high voltage are supplied when the cradle 818 is connected, it is possible to speed up data processing that consumes a large amount of current.

FIG. 9 is a flowchart showing an interrupt process when detecting the cradle of the portable information device 800 of FIG.

In FIG. 9, when the portable information device 800 is placed in the receiving section 300 of the cradle 818, it is detected from the output from the cradle detecting section 116 that the cradle 818 is connected (step S901), and the current execution is performed. The current processing mode ends (step S90).
2). Next, based on the output from the power supply detection control unit 114, it is detected whether or not power is supplied from the external power supply unit 119 (step S903). It is determined whether or not the flag data is present (step S910). If there is no flag data, the process is terminated. If there is flag data, a message for prompting the operator to supply power is displayed on the display unit 10.
9 (step S911), and the flow advances to step 1001 of the interrupt processing in FIG.

On the other hand, if it is detected in step S903 that the power has been supplied, the charging process of the battery 115 is started (step S904). Thereafter, it is determined whether or not there is flag data (step S905). If there is no flag data, the process is terminated. If there is flag data, the flag data is written and the process registered by encoding is displayed on the display unit 109. (Step S906). Next, when the operator selects a data process to be executed from among the processes displayed on the display unit 109 by input to the handwriting tablet 111 (step S907), the selected data process is executed by the data processing unit 1.
20 (step S908), and after storing the processed data as a file in the data storage unit 104, ends this processing.

FIG. 10 is a flowchart showing an interrupt process when the portable information device 800 in FIG. 8 detects an external power supply. This processing is started when power is not supplied in step S911 in FIG.

In FIG. 10, it is detected from the output from the power supply detection control section 114 that power has been supplied from the external power supply section 119 (step S1001).
Starts the charging process of the battery 115 (step S10).
02). Next, it is detected from the output from the cradle detector 116 whether or not the cradle 818 is connected (step S1003). If it is detected that the cradle 818 is connected, the process proceeds to step S1004,
On the other hand, if it is detected that the cradle 818 has not been connected, the process returns to step 90 of the interrupt processing in FIG.
Return to 1.

In step S1004, the presence or absence of flag data is determined. If there is no flag data, this process is terminated. If there is flag data, the flag data is written to indicate the process registered by encoding. A menu is displayed on the display 109 (step S1005).
Next, when the operator selects a process to be executed among the processes displayed on the display unit 109 by input to the handwriting tablet 111 (step S1006), the selected process is executed by the data processing unit 120 (step S10).
07), after storing the processed data as a file in the data storage unit 104, end this processing.

According to the second embodiment, when the portable information device 800 is placed in the receiving section 300 of the cradle 818, the output from the cradle detecting section 116 detects that the cradle 818 is connected ( Step S9
01) Then, after detecting that power has been supplied from the external power supply unit 119 (YES in step S903), if there is flag data (YES in step S905), encoding and registration are performed by writing the flag data. The displayed data processing is displayed as a menu on the display unit 109 (step S906).
The data processing to be executed is selected from among the data processings displayed on the display unit 109 by the input to Step 1 (Step S9).
07), the selected data processing is executed by the data processing means 120 (step S908), so that the data processing can be selectively executed according to the instruction of the operator, and the data processing that consumes a large amount of current is required. This is effective when there is a file to be executed with priority.

[0073]

As described above, according to the electronic device according to the first aspect and the control method of the electronic device according to the ninth aspect, when it is detected that power is supplied from the external power supply, the electronic device is controlled. Since the data processing means which is provided outside the device and performs the data processing with a large current consumption is caused to execute the data processing with a large current consumption, the data processing with a large current consumption can be surely performed.

According to the electronic device of the second aspect and the control method of the electronic device of the tenth aspect, the data processing means is in the cradle, the electronic device is connected to the cradle, and power is supplied from the external power supply unit. When the power is supplied from the cradle, the data processing means can perform the data processing with a large current consumption when the power supply is supplied from the cradle.

According to the electronic device of the third aspect and the control method of the electronic device of the eleventh aspect, the cradle detects that the electronic device is connected to the cradle and that external power is supplied from the external power supply unit. In this case, a high-speed clock is supplied to speed up data processing that consumes a large amount of current, so that data processing that consumes a large amount of current can be performed reliably and quickly.

According to the electronic device of the fourth aspect and the control method of the electronic device of the twelfth aspect, the electronic device includes a battery for supplying power, and the external power supply has a higher power supply voltage than the battery. In addition, data processing with large current consumption can be performed.

According to the electronic device of the fifth aspect and the control method of the electronic device of the thirteenth aspect, data to be processed is stored when the electronic device is supplied with power from the battery. In the case of driving in the data storage mode, data processing with large current consumption can be stored in the data storage means without performing the data processing with large current consumption, so that data processing with large current consumption can be reliably performed.

According to the electronic device of the sixth aspect and the control method of the electronic device of the fourteenth aspect, when the electronic device is connected to the cradle and detected that external power is supplied from the external power source, it is stored. The displayed data is displayed, and the data processing instructed by the operator among the displayed data is selectively executed, so that the data processing with large current consumption can be reliably performed according to the judgment of the operator.

According to the electronic device described in claim 7 and the control method of the electronic device described in claim 15, the connection to the cradle is detected, but the supply of power from the external power supply is detected. If not, a message to that effect is displayed as a message, so that data processing that consumes a large amount of current can be reliably performed according to the judgment of the operator.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of an electronic device according to a first embodiment of the present invention.

2 is an external view of the portable information device 100 of FIG. 1,
(A) is a view from the camera side, and (b) is a view from the cradle connection side.

FIG. 3 is an external view of the cradle 118 of FIG.

FIG. 4 is a flowchart showing a mode selection process of the portable information device 100 of FIG.

FIG. 5 is a flowchart showing a moving image shooting mode process in step S406 of FIG. 4;

FIG. 6 is a flowchart showing an interrupt process when the portable information device 100 of FIG. 1 detects a cradle.

FIG. 7 is a flowchart showing an interrupt process when detecting an external power supply of the portable information device 100 of FIG. 1;

FIG. 8 is a block diagram illustrating a configuration of an electronic device according to a second embodiment of the present invention.

FIG. 9 is a flowchart illustrating an interrupt process performed when a cradle is detected by the portable information device 800 of FIG. 8;

FIG. 10 is a flowchart illustrating an interrupt process performed when the portable information device 800 in FIG. 8 detects an external power supply.

[Explanation of symbols]

 Reference Signs List 100 portable information device 101 CPU 114 power detection control unit 118 cradle 119 external power supply unit 120 data processing means

Claims (16)

[Claims] An electronic device configured to be connected to the external power supply when the cradle having an external power supply for supplying power is placed at a predetermined position, wherein power is supplied from the external power supply. Detecting means for detecting that power is supplied, and data processing means provided outside the electronic device and performing data processing with high current consumption when it is detected that power is supplied from the external power supply unit. And an execution unit for executing the data processing. 2. The data processing means is provided in the cradle, the electronic device includes another detection means for detecting connection with the cradle, and the execution means is connected to the cradle and 2. The electronic apparatus according to claim 1, wherein the data processing means executes the data processing when it is detected that power is supplied from an external power supply unit. 3. The electronic device according to claim 1, wherein the cradle is configured to supply a high-speed clock to the electronic device when it is detected that the electronic device is connected to the cradle and power is supplied from the external power supply unit. 3. The electronic apparatus according to claim 2, further comprising a high-speed clock supply unit that speeds up data processing. 4. The electronic device according to claim 1, wherein the electronic device includes a battery for supplying power, and the external power supply unit has a higher power supply voltage than the battery. . 5. The electronic apparatus according to claim 4, further comprising storage means for storing the data to be processed when power is supplied from the battery. 6. When it is detected that power is supplied from the external power supply unit connected to the cradle,
Display means for displaying the stored data, wherein the execution means causes the data processing means to selectively execute processing of data designated by an operator among the data displayed by the display means. The electronic device according to claim 5, wherein 7. The display means displays a message when the connection to the cradle is detected and the power supply from the external power supply is not detected. 7. The electronic device according to claim 6, wherein: 8. The electronic device according to claim 1, wherein the electronic device is a portable information device. 9. A control method for an electronic device configured to be connected to the external power supply when the cradle having an external power supply for supplying power is placed at a predetermined position, wherein the external power supply is connected to the cradle. And a detection step of detecting that power is supplied from the external power supply unit, and data that is provided outside the electronic device and performs data processing that consumes a large amount of current when it is detected that power is supplied from the external power supply unit. A control method for an electronic device, comprising: an execution step of causing a processing unit to execute the data processing. 10. The data processing means is provided in the cradle, and the control method of the electronic device includes another detection step of detecting that the electronic device is connected to the cradle, and the execution step 10. The electronic device according to claim 9, wherein the data processing unit executes the data processing when it is detected that power is supplied from the external power supply unit connected to the cradle. Control method. 11. The cradle is configured to supply a high-speed clock to the electronic device when it is detected that the electronic device is connected to the cradle and power is supplied from the external power supply unit. 11. The method according to claim 10, further comprising a high-speed clock supply unit that speeds up data processing. 12. The electronic device according to claim 9, wherein the electronic device includes a battery for supplying power, and the external power supply unit has a higher power supply voltage than the battery. Control method. 13. The method of controlling an electronic device according to claim 12, wherein said electronic device has a storing step of storing said processed data when power is supplied from said battery. 14. A display step of displaying the stored data when it is detected that power is supplied from the external power supply unit connected to the cradle,
2. The data processing device according to claim 1, wherein in the execution step, the data processing means selectively executes processing of data designated by an operator among the data displayed in the display step.
3. The method for controlling an electronic device according to item 3. 15. In the display step, when connection to the cradle is detected, and when it is not detected that the power is supplied from the external power supply unit, a message to that effect is displayed as a message. The method for controlling an electronic device according to claim 14, wherein: 16. The control method according to claim 9, wherein the electronic device is a portable information device.