JPH11296266A - Portable electronic system and its docking control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable electronic system capable of preventing the power consumption of the whole system from exceeding the maximum output of a power supply circuit when connecting plural docking stations to a computer. SOLUTION: When connecting plural docking stations to a computer, the power consumption of a docking station to be connected is read out (step S4) and compared with the maximum output value of a power supply circuit built in the computer (step S8), and when the power consumption falls within ht range, normal connection is made (steps S9, S10). When the power consumption exceeds the range, connecting operation is stopped (step S11).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable electronic device system, such as a notebook personal computer, which can simultaneously connect a plurality of docking stations and supplies power to the connected docking stations.
And its docking control method.

[0002]

2. Description of the Related Art Generally, a portable electronic device such as a notebook personal computer is provided with only necessary minimum devices or peripheral devices in order to reduce the size and weight of the device according to its use. Therefore, a docking station that can be connected to a notebook personal computer is often provided to add functions. By connecting the notebook personal computer to the docking station, it becomes possible to use a device such as a hard disk or a CD-ROM built in the docking station, or a communication device that can be connected to a network or a modem.

Further, there are a plurality of types of docking stations for reasons of physical factors, cost, and the like, and there is a configuration in which each docking station can be simultaneously connected to a computer main body.

In many cases, this type of portable electronic device is configured to supply power to the docking station only from the computer itself.

[0005]

However, the above-mentioned conventional portable electronic devices have the following problems.

In the case where the power supply to the docking station is performed only from the computer main body, when a plurality of docking stations are connected at the same time, the maximum output value of the power supply circuit of the computer main body may be exceeded. There is.

[0007] For example, it is assumed that there are docking stations A, B, and C different from the computer main body X. If the computer main unit X and the docking station A are in a connected state, and if the docking station B is to be further connected from this state, the total power consumption value is within the range of the maximum output value of the power supply circuit provided in the computer main unit X. However, when the docking station C is connected, the total power consumption value may be out of the range of the maximum output value.

If the power consumption value of the entire system exceeds the maximum output value of the power supply circuit in such a state,
A drop in the output voltage from the power supply circuit, heat generation and damage of the components, or a fuse or the like which is a protection circuit element functions, and replacement or repair of the components is required.

The present invention has been made in view of the above-mentioned conventional problems, and in the case where a plurality of docking stations can be connected to a computer main body, the power consumption of the entire system exceeds the maximum output value of a power supply circuit. It is an object of the present invention to provide a portable electronic device system and a docking control method for the portable electronic device system, which can prevent the problem.

[0010]

According to a first aspect of the present invention, there is provided a docking station having a built-in device for realizing a predetermined function, and a plurality of docking stations capable of being simultaneously connected. And a device main body having a power supply circuit for supplying power to the connected docking station, wherein each docking station connected to the device main body consumes an individual docking station. A storage unit for storing the power value,
The device main body reads out the power consumption value stored in the storage device on the docking station side when connected to the docking station, and calculates a total power consumption value including the power consumption value; Comparing means for comparing a maximum output value of the circuit with the total power consumption value, and when the total power consumption value is within the range of the maximum output value, the docking operation is continued to the docking station to be connected. Power is supplied to the power supply unit, and when the total power consumption value is out of the range of the maximum output value, the docking operation is stopped.

In a second aspect based on the first aspect, the total power consumption value is a power consumption value stored in the storage device of a currently connected docking station;
The sum of the power consumption value stored in the storage device of the docking station that is already connected and the power consumption value of the device body.

In a third aspect based on the first or second aspect, the device main body includes the total power consumption calculating means and the comparing means, and controls the connection with each of the docking stations. Wherein each of the docking stations includes a station-side controller that controls connection with the device main body, and the main body-side controller executes the docking station as an initial process when the device main body is connected to the docking station. The power supply circuit supplies power to the station-side controller and the storage means connected thereto, and reads the power consumption value written in the storage means through the station-side controller. Things.

According to a fourth aspect of the present invention, a docking station having a plurality of built-in devices for realizing a predetermined function, and a plurality of the docking stations can be simultaneously connected, and power is supplied to the connected docking stations. A portable electronic device system including a device main body having a power supply circuit for performing the operation, wherein each of the docking stations connected to the device main body switches between supply and cutoff of power supply for each built-in device; Storage means for storing a power consumption value of each built-in device, wherein the equipment main body stores the power consumption of each built-in device stored in the storage device on the docking station side when connected to the docking station. Reads the value and calculates the total power consumption value including it. Means, and comparing means for comparing the maximum output value of the power supply circuit with the total power consumption value, and when the total power consumption value is within the range of the maximum output value, continue the docking operation. Power is supplied to the docking station to be connected, and when the total power consumption value is out of the range of the maximum output value, the power consumption value of each built-in device of the docking station to be connected is compared. When it is possible to select a built-in device so as to fall within the range of the maximum output value, the switch means supplies power only to a predetermined built-in device.

In a fifth aspect based on the fourth aspect, the total power consumption value is a power consumption value stored in the storage device of the currently connected docking station;
The sum of the power consumption value stored in the storage device of the docking station that is already connected and the power consumption value of the device body.

In a sixth aspect based on the fourth or fifth aspect, the apparatus main body includes the total power consumption calculating means and the comparing means, and controls the connection with each of the docking stations. Wherein each of the docking stations includes a station-side controller that controls connection with the device main body, and the main body-side controller executes the docking station as an initial process when the device main body is connected to the docking station. Power is supplied from the power supply circuit to the station-side controller and the storage means connected thereto, and the power consumption value of each of the built-in devices written in the storage means through the station-side controller is read out. The configuration is as follows.

According to a seventh aspect of the present invention, there is provided a docking station having a built-in device for realizing a predetermined function, and a power supply capable of simultaneously connecting a plurality of the docking stations and supplying power to the connected docking stations. For a portable electronic device system including a device main body having a supply circuit, each of the docking stations connected to the device main body is provided with storage means for storing a power consumption value of each docking station, Reading the power consumption value stored in the storage device on the docking station side at the time of connection with the docking station, calculating a total power consumption value including the read power consumption value, and a maximum output value of the power supply circuit And comparing the total power consumption value with the total power consumption value. When the power value is within the range of the maximum output value, the docking operation is continued to supply power to the docking station to be connected, and when the total power consumption value is out of the range of the maximum output value, docking is performed. The operation is stopped.

In an eighth aspect based on the seventh aspect, the total power consumption value is a power consumption value stored in the storage device of the currently connected docking station,
The sum of the power consumption value stored in the storage device of the docking station that is already connected and the power consumption value of the device body.

In the ninth aspect, a docking station having a plurality of built-in devices for realizing a predetermined function, and a plurality of the docking stations can be simultaneously connected, and power is supplied to the connected docking stations. Switch means for switching between power supply / interruption for each built-in device in each of the docking stations connected to the device main body, for a portable electronic device system having a device main body having a power supply circuit to perform And storage means for storing the power consumption values of the individual built-in devices, respectively, and when connected to the docking station, the power consumption values of the individual built-in devices stored in the storage device on the docking station side are stored. Reading and calculating the total power consumption including the total power consumption value, Performing a comparison process of comparing the maximum output value of the power supply circuit with the total power consumption value, and when the total power consumption value is within the range of the maximum output value, the docking operation is continued to be a connection target. When power is supplied to the docking station, and when the total power consumption value is out of the range of the maximum output value, the power consumption value of each built-in device of the docking station to be connected is compared, and the maximum power consumption value is compared. When the built-in device can be selected so as to fall within the value range, the power is supplied only to a predetermined built-in device by the switch means.

According to a tenth aspect, in the ninth aspect,
The total power consumption value is a power consumption value stored in the storage device of the currently connected docking station, a power consumption value stored in the storage device of the docking station that is already connected, This is a value obtained by summing the power consumption value of the device main body.

[0020]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 is a block diagram showing a schematic configuration of a notebook personal computer which is a portable electronic device system according to a first embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a CPU (Central Processing Unit) for controlling an electronic equipment system, 2 a main storage device for storing application programs and data, and 3 a file for reading and writing files such as a hard disk and a memory card. Is a display device for displaying characters and the like. These constitute the system unit 5 of the computer main body 10.

Reference numeral 6 denotes a power supply circuit unit having a DC-DC converter, a function of controlling charging of a battery, and a function of supplying power to a docking station. Reference numeral 7 denotes a battery pack for supplying power to the system. Reference numeral 8 denotes a controller for controlling docking with a system power supply and a docking station, and is configured by a one-chip microcomputer or the like.

Reference numeral 9 denotes an AC adapter serving as an external power supply, 10 denotes a computer main body, 11 denotes a bus line for performing communication between the computer main body 10 and a docking station device, and 12 denotes the main body side controller 8 and a docking station side controller. It is a bus line for performing communication between them, and also includes a power supply line for supplying power to a controller or the like on the docking station side.

Reference numeral 13 denotes a power supply line for supplying power to the docking station connected to the docking connector 15, and reference numeral 14 denotes a power supply line for supplying power to the docking station connected to the docking connector 16.

The docking connectors 15, 16
Is a connector for making a physical connection with the docking station.

In the figure, reference numeral 20 denotes a main body of the docking station (A), and reference numeral 21 denotes a docking connector provided on the docking station (A) side, which is used for physical connection with the computer main body 10. It is. A controller 22 controls the power supply of the docking station (A) and controls the docking operation. Reference numeral 23 denotes a memory for storing a power consumption value of the docking station (A), which has a function of preventing stored data from being erased even when power is not supplied.
In the present embodiment, an EEPROM is used as the memory 23.

Reference numeral 24 denotes a second hard disk provided in the docking station (A), and reference numeral 25 denotes a floppy drive provided in the docking station (A). Reference numeral 26 denotes a bus line for performing communication between the controller 8 and the controller 22 on the docking station side. Reference numeral 27 denotes a bus line, which is a system unit 5 of the computer main unit 10 and a device 2 provided in the docking station (A).
This is for performing communication with 4, 25. Reference numeral 28 denotes a power supply line supplied from the computer main body 10, and is connected to the devices 24 and 25 provided in the docking station (A).

Reference numeral 30 denotes a main body of the docking station (B). Reference numeral 31 denotes a docking connector provided on the docking station (B) side for making a physical connection with the computer main body 10. Reference numeral 32 denotes a controller for controlling the power supply of the docking station (B) and controlling the docking operation.
33 is a memory for storing the power consumption value of the docking station (B), 34 is a Network controller mounted on the docking station (B),
35 is a CD mounted on the docking station (B)
-A ROM drive.

Reference numeral 36 denotes a bus line for performing communication between the controller 8 and the controller 32 on the docking station (B) side. Reference numeral 37 denotes a bus line, which is a system unit 5 of the computer main unit 10 and a device 3 mounted on the docking station (B).
It is for performing communication with 4,35. Reference numeral 38 denotes a power supply line supplied from the computer main body 10, and each device 3 provided in the docking station (B)
4, 35.

FIG. 2 is a diagram showing a block configuration of various docking stations in the present embodiment.

For example, the docking station (C) 4
Reference numeral 1 denotes a docking connector provided on the docking station 40 side, for making a physical connection with the computer 10. 42 is a controller for controlling the power supply of the docking station and controlling the docking operation, 43 is a memory for storing the power consumption value of the docking station (C), and 44 is provided in the docking station (C). Printer. 45 is a docking station (C)
Is a CD-ROM drive provided in the system.

Reference numeral 46 denotes a bus line for performing communication between the controller 8 and the controller 42 on the docking station side. Reference numeral 47 denotes communication between a system unit of the computer main body 10 and devices provided in the docking station (C). Bus line to perform. Reference numeral 48 denotes a power supply line supplied from the computer main body 10, and is connected to each device provided in the docking station (C).

The docking station (Y) in FIG. 2 is the above-mentioned docking station (A),
(B), (C)... Are abstracted, and the controller 52 includes docking stations (A),
.. Correspond to any one of the controllers 22, 32, 42... Of the (B), (C).

In this embodiment, it is assumed that the controller 8 and the controller 52 are connected by two systems of a clock signal line and a bidirectional input / output signal line. When the computer main body 10 and the docking station main body 50 are connected, first, only power supply to the controller 52 is performed so that the controller 52 can operate.

FIG. 3 is a diagram showing an example of communication between the controller 8 on the computer main body side and the controller 52 on the docking station (Y) side in this embodiment. Output to the controller 52
An example in which certain data is output to the controller 8 is shown.

In the figure, reference numeral 62 denotes a timing example when an address designation or command from the controller 8 is transmitted to the controller 52, and reference numeral 63 denotes a case where the controller 52 responds to the address or command transmitted in the timing example 62. This is an example of the timing at which data is transmitted.

FIG. 4 is a diagram showing the storage configuration of a memory for storing the power consumption value of the docking station in the present embodiment.

A storage information value is set for each of addresses 0, 1, 2, 3,..., For example, address 0 is a High Byte storage unit for the power consumption value of the docking station,
Address 1 is L of the power consumption value of the docking station.
ow Byte storage unit, and address 2 is a docking station function information storage unit.

Next, the characteristic operation of this embodiment will be described.

When the docking station (Y) is connected to the computer main body 10 configured as described above, first, the controller 8 of the computer main body is connected to the docking station (Y).
Requests the controller 52 on the docking station side to transmit the power consumption Hy during the operation of the docking station (Y). Then, the controller 52 on the docking station (Y) side reads the power consumption value during operation stored in the memory 53 and transmits it to the controller 8.

After the controller 8 receives the power consumption value Hy of the docking station (Y), the controller 8 stores the power consumption value Hx of the computer body 10 stored in advance, the maximum output power value Px of the power supply circuit section 6, and the The comparison process is performed using the power consumption value Hd during the operation of the connected docking station. Docking station (Y)
Is connected, the docking operation is completed if the total power consumption (Hx + Hy + Hd) does not exceed the maximum output value Px of the power supply circuit unit 6, but if it exceeds, the docking operation is stopped and the docking station (Y In ()), supply of power and connection of the system bus are not performed.

Hereinafter, the docking control method according to the present embodiment will be described with reference to the flowchart of FIG. 5 showing the operation of the controller 8 on the computer main body side.
Note that the docking control method of this example can be realized by storing a program according to the flowchart shown in FIG. 5 in a storage device in the controller 8 and operating the program.

First, the docking operation is started in step S1, and the controller 8 makes a connection for communicating with the controller 52 in step S2. Step S
At 3, the controller 52 requests the controller 52 to transmit the power consumption value of the docking station (Y) stored in the memory 53.

In step S4, the power consumption value of the docking station transmitted from the controller 52 is changed to Hy.
And the power consumption value of the computer body 10 is Hx. In step S5, it is determined whether there is an already connected docking station. If there is an already connected docking station, the process proceeds to step S6, and the power consumption value is set to Hd.

If there is no docking station connected in step S5, the process proceeds to step S7, where H
Let d = 0. In step S8, the sum of the power consumption value Hx of the computer body 10, the power consumption value Hy of the docking station to be connected, the power consumption value Hd of the docking station already connected, the maximum output power value Px of the power supply circuit 6, and Compare. As a result, when power can be supplied from the power supply circuit 6, that is, Px ≧ Hx + H
If y + Hd, the process proceeds to step S9.

In step S9, power supply to the docking station (Y) is started, the program is ended in step S10, and other processing in the docking operation is continued.

If power cannot be supplied in step S8, that is, if Px <Hx + Hy + Hd, the docking operation and other processes are stopped and step S11 is performed.
Then, the program for docking operation is terminated.

As described above, according to the present embodiment, when a plurality of docking stations can be connected to the computer main body, the power consumption value of the docking station to be connected is read and stored in the computer main body. Compared with the maximum output value of the power supply circuit, if the power consumption value falls within the range, the connection operation is performed normally, and if not, the connection operation is stopped. As a result, the power consumption value of the entire system can be prevented from exceeding the maximum output value of the power supply circuit, and the output voltage from the power supply circuit can be prevented from lowering, and heat and damage to components can be avoided. .

(Second Embodiment) In the first embodiment described above, when the computer main body 10 is connected to the docking station (Y), the memory is transmitted from the controller 8 of the computer main body 10 through the controller 52 of the docking station (Y). The power consumption value written in the computer main body 53 is read out, and the computer main body 1 stored in the controller 8 of the computer main body 10 in advance is read out.
The power consumption value Hx of 0 and the power consumption value Hd read from the docking station already connected are summed, and this sum is compared with the maximum output value Px of the power supply circuit 6 of the computer body 10. If the total value is within the range of the maximum output value Px, the docking operation is continued, and if not, the docking operation is not performed.

On the other hand, in the second embodiment, by providing a function of supplying and shutting off power to each built-in device of the docking station (Y), the total value of power consumption is reduced by the power supply circuit unit 6. If it is within the range of the maximum output value Px, the docking operation is continued, and if it is outside the range, the power consumption of each device of the docking station to be connected is compared. When a device can be selected so as to fall within the range of the maximum output value Px, power is supplied only to the device selected during the docking operation.

FIG. 6 is a block diagram showing a schematic configuration of a docking station in a portable electronic device system according to a second embodiment of the present invention. The configuration of the computer body is the same as that of the first embodiment.

In the figure, 74 and 75 are devices built in the docking station (Z) of the present embodiment, and 79 and 80 are switch units. Switch part 7
9 (SW1) performs disconnection / connection of the device 74 and the power supply line 78 and disconnection / connection of the device 74 and the system bus 77. Here, as a configuration of the switch unit 79,
It is assumed that an FET is used as a switching device of a power supply line, and a bus switch is used as a switching device of a system bus. The switch unit 80 (SW2)
The connection / disconnection of the device 75 and the power supply line 78 and the connection / disconnection of the device 75 and the system bus 77 are performed.

Reference numeral 81 denotes a signal line output from the controller 72 for controlling the switch unit 79. That is, when the signal line 81 is at the low level, the switch unit 79 is turned on, and the power supply 78 is supplied to the device 74 to enable connection with the system bus 77. When the signal line 81 is at the high level, the switch unit 79 is turned off, the power supply to the device 74 is stopped, and the device 74 is disconnected from the system bus 77.

Reference numeral 82 denotes a signal line output from the controller 72, and has the same function as the signal line 81 for controlling the switch unit 80.

In order to realize the above-described processing, in the second embodiment, the main body controller 8 performs processing according to the flowcharts shown in FIGS. It is assumed that the program according to this flowchart is stored in a storage device built in the controller 8.

Steps S20 to S22 are the same as in the first embodiment. Step S23
As for the power consumption value of each device of the docking station Z transmitted from the controller 72, the power consumption value of the device 74 is Hdz1, the power consumption value of the device 75 is Hdz2, the controller 72 and the switch unit 79,
The power consumption value of the system unit composed of 80 and the like is assumed to be Hz. That is, the power consumption of the entire docking station is Hdz1 + Hdz2 + Hz.

Steps S24 to S26 are processes for determining whether or not the docking station is already connected, and are the same as those in the first embodiment.

In step S27, the power consumption value Hx of the computer body, the power consumption value Hz of the system part of the docking station to be connected, the power consumption value Hd of the docking station already connected, and the power consumption value Hdz1 of the device 74 are connected. Is compared with the maximum output power value Px of the power supply circuit unit 6, and when the power supply of the power supply circuit unit 6 is possible, that is, Px ≧ Hx + Hz + Hd
In the case of + Hdz1, the process proceeds to step S28.

If power cannot be supplied in step S27, that is, if Px <Hx + Hz + Hd + Hdz1, the process proceeds to step S33 (FIG. 8).

In step S28, the power consumption value Hx of the computer main body, the power consumption value Hz of the system part of the docking station to be connected, the power consumption value Hd of the docking station already connected, and the device 74
And the maximum output power value Px of the power supply circuit unit 6 is compared with the sum of the power consumption value Hdz1 of the device 75 and the power consumption value Hdz2 of the device 75. Hx + Hz + Hd + Hdz1 + Hdz
In the case of 2, the process proceeds to step S29.

In step S29, when the docking station Z is connected, both the device 74 and the device 75 are operable.
To turn on the switch units 79 and 80, that is,
Control signal lines 81 and 82 of switch sections 79 and 80
Command to set both to Low level by the controller 7
2 is transmitted.

In the step S28, when the power supply from the power supply circuit section 6 is impossible, that is, Px <Hx +
If Hz + Hd + Hdz1 + Hdz2, step S
Proceed to 30. In step S30, Px ≧ Hx + H
Since the condition of z + Hd + Hdz1 is satisfied in step S27, it is determined that the operation of only the device 74 is possible, so that the switch unit 79 of the controller 72 is turned on. That is, the control signal line 81 of the switch unit 79 is set to the low level,
Is sent to the controller 72 to keep the control signal line 82 at the High level.

In step S31, the controller 7
2 instructs the power supply circuit unit 6 to start supplying power to the docking station Z, terminates this program for the docking operation in step S32, and subsequently performs other processing in the docking operation.

In step S27, when the power supply from the power supply circuit section 6 is impossible, that is, Px <Hx + Hz + Hd
In step S33 (FIG. 8), which is the case of + Hdz1,
Power consumption value Hx of the computer itself, power consumption value Hz of the system part of the docking station to be connected, power consumption value H of the docking station already connected
d, and a value obtained by summing the power consumption value Hdz2 of the device 75 and the maximum output power value Px of the power supply circuit unit 6,
When power can be supplied from the power supply circuit unit 6, that is, Px ≧ H
If x + Hz + Hd + Hdz2, the process proceeds to step S34.

In step S34, when the docking station Z is connected, only the device 75 is operable, so the controller 80 turns on the switch unit 80. That is, a command for setting the control signal line 82 of the switch unit 80 to the low level is transmitted to the controller 72, and the process proceeds to step S31 to continue the docking operation.

If power cannot be supplied in step S33, that is, Px <Hx + Hz + Hd + Hdz2
In the case of, it is determined that the device 75 is also inoperable, the process proceeds to step S35, and the docking control method according to the second embodiment is implemented by ending the program for the docking operation in step S35. Becomes possible.

According to the present embodiment, it is possible to prevent the power consumption value of the entire system from exceeding the maximum output value of the power supply circuit, and to reduce the output voltage of the power supply circuit and to prevent heat and damage of components. Can be avoided. further,
By selecting a device that supplies power at the time of connection, it becomes possible to use a specific limited function.

[0069]

As described in detail above, the first invention and the second invention
According to the third invention, the seventh invention, and the eighth invention, it is possible to prevent the power consumption value of the entire system from exceeding the maximum output value of the power supply circuit, It is possible to avoid a decrease in the output voltage and heat generation and damage of the components.

According to the fourth invention, the fifth invention, the sixth invention, the ninth invention, and the tenth invention, it is possible to prevent the power consumption value of the entire system from exceeding the maximum output value of the power supply circuit. Not only can reduce the output voltage of the power supply circuit, and avoid heat generation and damage of the components, but also
By selecting a device that supplies power at the time of connection, it becomes possible to use a specific limited function.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a schematic configuration of a notebook personal computer which is a portable electronic device system according to a first embodiment of the present invention.

FIG. 2 is a diagram illustrating a block configuration of a docking station according to the first embodiment.

FIG. 3 is a diagram showing an example of communication between a controller 8 on the computer main body side and a controller 52 on the docking station (Y) side in the first embodiment.

FIG. 4 is a diagram illustrating a storage configuration of a memory that stores a power consumption value of the docking station according to the first embodiment.

FIG. 5 is a flowchart illustrating an operation of a controller 8 of the computer main body according to the first embodiment.

FIG. 6 is a block diagram illustrating a schematic configuration of a docking station in a portable electronic device system according to a second embodiment of the present invention.

FIG. 7 is a flowchart showing an operation of the main body controller 8 in the second embodiment.

FIG. 8 is a flowchart continued from FIG. 7;

[Explanation of symbols]

 Reference Signs List 5 system part 6 power supply circuit part 7 battery pack 8 main body controller 10 computer main body 11, 12 bus line 13, 14 power supply line 15, 16 docking connector 51 docking connector 52 station side controller 53 for storing power consumption value Memory 54,55 device 26,27 bus line 28 power supply line

Claims (10)

[Claims] 1. A docking station having a built-in device for realizing a predetermined function, and a power supply circuit capable of simultaneously connecting a plurality of the docking stations and supplying power to the connected docking stations. In the portable electronic device system including the device body, each of the docking stations connected to the device body includes a storage unit that stores a power consumption value of each docking station, and the device body includes the docking device. Reading a power consumption value stored in the storage device on the docking station side at the time of connection with a station, and calculating a total power consumption value including the power consumption value; a maximum output value of the power supply circuit; Comparing means for comparing the total power consumption value with the total power consumption value. When the power value is within the range of the maximum output value, the docking operation is continued to supply power to the docking station to be connected, and when the total power consumption value is out of the range of the maximum output value, docking is performed. A portable electronic device system, wherein the operation is stopped. 2. The power consumption value stored in the storage device of the currently connected docking station and the power consumption value stored in the storage device of the already connected docking station. Power value,
The portable electronic device system according to claim 1, wherein the value is a sum of power consumption values of the device main body. 3. The apparatus main body includes a main body side controller including the total power consumption calculating means and the comparing means, and controlling connection with each of the docking stations, wherein each of the docking stations is connected to the apparatus main body. A main controller that controls the connection of the docking station, as a first process when an apparatus main body is connected to the docking station, and the storage controller connected to the station controller of the docking station. 3. The power supply circuit according to claim 1, wherein said power supply circuit supplies power from said power supply circuit, and reads the power consumption value written in said storage means through said station-side controller. A portable electronic device system as described. 4. A docking station having a plurality of built-in devices for realizing a predetermined function, and a power supply circuit capable of simultaneously connecting a plurality of the docking stations and supplying power to the connected docking stations. A portable electronic device system including a device main body having: a docking station connected to the device main body, wherein each of the docking stations switches between supply and cutoff of power supply for each built-in device; Storage means for storing the power consumption value of the device, the device body reads the power consumption value of each of the built-in devices stored in the storage device of the docking station when connected to the docking station, A total power consumption calculating means for obtaining a total power consumption value including the total power consumption value; Comparing means for comparing the maximum output value of the power supply circuit with the total power consumption value, and when the total power consumption value is within the range of the maximum output value, the docking operation is continued to be connected. When power is supplied to the docking station, and when the total power consumption value is out of the range of the maximum output value, the power consumption value of each built-in device of the docking station to be connected is compared, and the maximum power consumption value is compared. If you can select the built-in device to be within the value range,
A portable electronic apparatus system, wherein power is supplied only to a predetermined built-in device by the switch means. 5. The power consumption value stored in the storage device of the currently connected docking station and the total power consumption value stored in the storage device of the currently connected docking station. Power value,
The portable electronic device system according to claim 4, wherein the value is a value obtained by summing a power consumption value of the device main body. 6. The apparatus main body includes a main body side controller including the total power consumption calculating means and the comparing means, and controlling connection with each of the docking stations, wherein each of the docking stations is connected to the apparatus main body. A main controller that controls the connection of the docking station, as a first process when an apparatus main body is connected to the docking station, and the storage controller connected to the station controller of the docking station. The power supply circuit supplies power from the power supply circuit to the power supply circuit, and reads out the power consumption value of each of the built-in devices written in the storage means through the station-side controller. A portable electronic device system according to claim 5. 7. A docking station having a built-in device for realizing a predetermined function, and a power supply circuit capable of simultaneously connecting a plurality of the docking stations and supplying power to the connected docking stations. For a portable electronic device system including a device main body, each of the docking stations connected to the device main body is provided with a storage unit for storing a power consumption value of each docking station. Reading the power consumption value stored in the storage device on the docking station side at the time of connection, and calculating a total power consumption value including the read power consumption value; a maximum output value of the power supply circuit and the total power consumption value; And performing a comparison process of comparing the total power consumption value with the power value. When the value is within the range of the large output value, the docking operation is continued to supply power to the docking station to be connected, and when the total power consumption value is out of the range of the maximum output value, the docking operation is stopped. A docking control method for a portable electronic device system, comprising: 8. The power consumption value stored in the storage device of the currently connected docking station and the total power consumption value stored in the storage device of the currently connected docking station. Power value,
The docking control method for a portable electronic device system according to claim 7, wherein the value is a value obtained by summing a power consumption value of the device main body. 9. A docking station on which a plurality of built-in devices for realizing a predetermined function are mounted, and a power supply circuit capable of simultaneously connecting a plurality of the docking stations and supplying power to the connected docking stations. A portable electronic device system including a device main body having: a switch means for switching power supply / shutoff for each built-in device to each of the docking stations connected to the device main body; Storage means for storing the power consumption value of the built-in device are provided, and when connected to the docking station, the power consumption values of the individual built-in devices stored in the storage device on the docking station side are read out. Total power consumption calculation processing for obtaining a total power consumption value including the power supply circuit Performs a comparison process for comparing the maximum output value and the total power consumption value, when the total power consumption value is within the range of the maximum output value,
The docking operation is continued to supply power to the docking station to be connected, and when the total power consumption value is out of the range of the maximum output value, the power consumption of each docking station to be connected to each built-in device. When the power value is compared and the built-in device can be selected so as to be within the range of the maximum output value, power is supplied only to a predetermined built-in device by the switch means. Docking control method for electronic equipment system for home use. 10. The total power consumption value includes a power consumption value stored in the storage device of a currently connected docking station and a consumption power value stored in the storage device of an already connected docking station. The docking control method for a portable electronic device system according to claim 9, wherein the value is a sum of a power value and a power consumption value of the device main body.