JP2002163044A - Portable information terminal equipment, charging equipment, method for electric power supply, and storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow quick charge by a high voltage while using a standard connection terminal. SOLUTION: This mobile information terminal equipment 100 provided with a USB socket for wire connection to external equipment and a battery has a terminal Vbus for receiving electric power supply from the external equipment by the USB socket, terminals D+, D- for receiving a data signal from the external equipment, and an electric power source device 160 for detecting a level of a voltage value impressed to the terminal Vbus. When the detected voltage value is larger than a prescribed value, reception processing to the received data signal received by the terminals D+, D- is conducted, and electric power received by the terminal Vbus is fed to the battery to carry out charging. When the detected voltage value is the prescribed value or less, the reception processing to the data signal is conducted similarly, and the electric power received by the terminal Vbus is supplied to an internal circuit of the mobile information terminal equipment.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a portable information terminal device, a charging device, a power supply method, and a storage medium.
A portable information terminal device having a connection portion for wired connection to an external device and a battery, a charging device having an input terminal, an output terminal, and a DC power supply, and a charging device having an output terminal and a DC power supply The present invention relates to a power supply method applied to the portable information terminal device, and a storage medium storing a program for executing the power supply method.

[0002]

2. Description of the Related Art Conventionally, a portable information terminal (Personal Digital Assistant, abbreviated as PDA) has been developed as a palm-sized information device for supporting personal intellectual activities. This portable information terminal is equipped with a liquid crystal image display device and has a schedule book function, a memo book function, a telephone book function, and the like. Such portable information terminals include Zaurus of Sharp Corporation and Pal of Palm Corporation (USA).
and m are commercially available.

[0003] Conventional peripheral technologies related to this portable information terminal are described below.

[Optical Device] With the development of optical design / production technology, enlarged projection using a free-form surface prism has been realized, and an optical device that provides a large screen while being small in size has been provided. In addition, by combining such an optical device with a high-definition display device such as a microdisplay, it is possible to obtain a small-sized display with a wide field of view and high resolution. Such technology has been used in head-mounted displays HMD
(Head Mounted Display).

[0005] For example, there is a GT-270 manufactured by Canon Inc.

Further, as a computer system in which an HMD and a CPU are integrated, Japanese Patent Application Laid-Open No.
No. 179062.

[High Definition Display Device] With the development of liquid crystal display (hereinafter, referred to as “LCD”) technology, a high-definition display which is small in size can be realized. In particular, in LCoS (Liquid Crystal on Silicon) technology for mounting a liquid crystal material on a CMOS backplane,
By applying high-density circuit formation technology in semiconductor manufacturing, high definition and high reaction speed are achieved.

For example, there is a CMD8X6 series of microdisplays manufactured by CMD (USA).

[Input Device Using Pressure-Sensing Element] By using a pressure-sensitive element or the like, slight finger movement is detected, and pointing and button clicking in a two-dimensional plane equivalent to a pointing device (mouse) are detected. The input devices to be realized are becoming widespread.

[0010] Such an input device is a notebook PC.
(Personal Computer) is used as an embedded pointing button and an auxiliary button for scrolling a mouse.

[Miniaturized Computer Devices] Advances in semiconductor manufacturing technology and semiconductor design technology have made it possible to realize small and power-saving computer devices having high-performance processing capabilities. Further, many processor products in which functions such as a bus control, a memory control, and a timer constituting a computer device are incorporated on a single chip have been widely distributed.

In addition, with the advent of SoC (System on a Chip) technology and the like, functions that have conventionally been configured by combining a plurality of semiconductor chips including an ASIC part can be realized by one chip. It is now possible. This has made it possible not only to reduce the volume, but also to reduce power consumption.

ARM is a processor core for SoC.
ARM (UK) ARM cores are known.

[Wide Area Wireless Communication Network] PHS (Personal
Wide-area wireless communication networks such as Handy phone System) and mobile phones have been developed, and the explosion of mobile phone terminals has made it possible to perform network communications without being restricted by locations. ing. Furthermore, with the introduction of the IMT-2000 specification, the communication bandwidth has been dramatically increased.

[0015] In the i-mode service of NTT DoCoMo and the EZ access of Nippon Mobile Communication Co., Ltd., although there are some restrictions, access to the Internet information service via each wide area wireless communication network is restricted. It is possible.

[Mobile Phone Terminal] A terminal for connecting to a mobile phone network, which is a wide area wireless communication network provided by NTT DoCoMo, etc., has achieved a significant reduction in size due to the recent development of mounting technology and the like. .

[0017] In addition, a mobile phone terminal compatible with NTT Docomo's i-mode service and Nippon Mobile Communication Co., Ltd.'s EZ access, etc., can use Internet information services, although there are some restrictions. I have.

Further, these portable telephone terminals are provided with a function of playing individually set melodies when receiving a call. This function is called “ringtone”.
As a melody played by the ringtone function, not only a single tone but also a mobile phone terminal that enables a melody by a chord has appeared.

[Low-power wireless communication system] Due to technological advances such as a communication frequency control circuit and a radio wave intensity adjustment function, a high-speed communication system with low power consumption has been realized. Such a communication method is used for a mobile phone terminal and a notebook PC (Personal Comu
and other information devices.

A typical example of such a low-power-consumption wireless communication system is Bluetooth. In particular, bluetooth which leads this Bluetooth system
In the ootSIG (Special Interest Group), a combination of protocol stacks is defined as a profile for each application that uses communication in order to promote the spread, and interconnectivity between Bluetooth-compliant devices is also ensured. For example, “Dial-up Networking profile” included in the Bluetooth specification defines a communication protocol and a communication procedure when a mobile phone terminal or the like is used as an Internet bridge.

[External Memory Device] Due to advances in semiconductor manufacturing technology and storage circuit systems, the storage capacity of memory devices has made remarkable progress. In particular, in recent years, standardized external memory devices have become available among various information devices, and a large amount of information can be easily exchanged via these external memory devices. It has become.

For example, M of the MultiMediaCard Association
MC and San Disk's compact flash.

[Internet Information Service] A variety of information can be obtained via the Internet. This information includes images and text, video and audio, etc., and the information is written in HTML (Hype
It can be distributed by a description method called rText Markup Language). Also, the ISP (In
A connection provider called a “Internet service provider” has made it easy to connect to the Internet via a wide area communication network such as a telephone network.

As such an Internet information service is provided on a wide area communication network spread all over the world, a large amount of information has been provided to terminal terminals in real time.

The i-mode provided by NTT DoCoMo, Inc.
By employing a subset of HTML called compact HTML, it is possible to use the Internet information service even with a mobile phone terminal having various hardware restrictions compared to a PC or the like.

[Small and Large-Capacity Batteries] With the advent of lithium-ion batteries and lithium-polymer batteries, batteries with high power density, that is, small-sized and large-capacity batteries have become available. This makes it possible to use portable equipment continuously for a long time.

[Wired data communication interface] USB
2. Description of the Related Art Wired data communication interfaces represented by (Universal Serial Bus) and IEEE 1394 have become widespread as external interfaces of information devices, particularly PCs (Personal Computers).

For example, the USB has a specification in which power can be supplied from a host such as a PC to a device, and a power supply of 5 V and 100 mA (or 500 mA) is specified. As the USB terminal, two types of terminal shapes, type A used on the host side and type B used on the device side, are determined. Both types of terminals have four contacts, and are called Vbus, D +, D-, and GND, respectively.

Among them, D + and D- are signal terminals for transmitting data to be communicated by differential operation. The clock signal converts the serial data to NRZI
(Non Return to Zero Invert) is transmitted by encoding. The communication speed (low-speed, full-speed,
High-speed) detection is performed.

Vbus is used for power supply from the host to the device. Note that the presence or absence of a communication partner (host or device) is mutually detected using this signal level.

The USB device is designed so that it can receive power supply from the host and may have its own power supply. For example, in the specification of a hub used for relaying data communication signals and forming a multi-stage on a tree structure, a bus-powered hub and a self-powered h are used.
Two types of ub are defined.

[Common Use of Charging Terminal and Data Communication Terminal] Some devices share a charging terminal and a data communication terminal due to design reasons or miniaturization of the device. For example,
Palm IIIc, a hand-held computer of Palm Computing (USA), is designed so that a charging terminal and a data communication terminal can coexist via a dedicated device called a cradle.

By utilizing the various peripheral technologies described above, the portable information terminal can be provided with a communication function so as to be multifunctional, and also to be miniaturized and portable.

[0034]

As described above, in the conventional portable information terminal, there is a device in which the charging power supply terminal and the data communication terminal are commonly used for the purpose of design or miniaturization of the device. However, such devices need to be provided with dedicated connection devices.

Therefore, there is a problem that a dedicated connection device is required even when only data communication is desired.

On the other hand, it is possible to charge the battery of the portable information terminal by using the USB Vbus terminal used for power supply from the host to the device, but conventionally, the voltage applied to the Vbus terminal is used. Is too low to charge, so that when charging via the Vbus terminal, a long charging time is required.

The present invention has been made in view of the above problems, and has a portable information terminal device, a charging device, and a power supply that enable high-speed charging at a high voltage while using a standard connection terminal. It is an object to provide a method and a storage medium.

[0038]

According to the first aspect of the present invention, there is provided a portable information terminal device having a connection portion for connecting to an external device by wire and a battery. A power supply terminal included in the connection unit and receiving power from the external device, a data terminal included in the connection unit and receiving a data signal from the external device, and a magnitude of a voltage applied to the power supply terminal are detected. Detecting means for performing, when the voltage value detected by the detecting means is greater than a predetermined value, receiving processing on the data signal received by the data terminal, and transmitting the power received by the power supply terminal to the battery; First control means for sending and charging, and receiving by the data terminal when a voltage value detected by the detection means is equal to or less than the predetermined value. With performing reception processing on the data signal, and having a second control means for feeding a power received by said power supply terminal to an internal circuit of the portable information terminal device.

According to the invention described in claim 8, in the charging device provided with the input terminal, the output terminal, and the DC power supply,
An input data terminal included in the input terminal and receiving a data signal from an input external device; an output data terminal included in the output terminal and sending a data signal to an output external device; and the output terminal And a power supply terminal for supplying power from the DC power supply to the output-side external device.

According to the seventeenth aspect of the present invention, the DC power supply includes a DC power supply that outputs a voltage higher than a power supply voltage specified by a USB or IEEE1394 wired connection interface specification, and a configuration defined by the wired connection interface specification. And a power supply terminal for supplying power output from the power supply to an external device.

According to the eighteenth aspect of the present invention, a connection portion for wired connection to an external device, a battery, a power supply terminal included in the connection portion and receiving power from the external device, and The power supply method applied to a portable information terminal device comprising: a data terminal for receiving a data signal from the external device included in the power supply terminal; and detection means for detecting a magnitude of a voltage applied to the power supply terminal. A comparing step of comparing the voltage value detected by the means with a predetermined value; and, as a result of the comparison in the comparing step, if the detected voltage value is larger than the predetermined value, the data signal received by the data terminal is A first control step of performing a receiving process on the battery and transmitting the power received by the power supply terminal to the battery for charging. If the detected voltage value is equal to or less than the predetermined value as a result of the comparison, the reception processing is performed on the data signal received by the data terminal, and the power received by the power supply terminal is transmitted to the portable terminal. And a second control step of feeding power to an internal circuit of the information terminal device.

Further, according to the invention of claim 19,
A connection unit for wired connection to an external device, a battery,
A power supply terminal included in the connection unit for receiving power from the external device; a data terminal included in the connection unit for receiving a data signal from the external device; and a magnitude of a voltage applied to the power supply terminal. In a computer-readable storage medium storing a power supply method applied to a portable information terminal device having a detection unit as a program, the power supply method compares a voltage value detected by the detection unit with a predetermined value. The comparing step, and if the detected voltage value is greater than the predetermined value as a result of the comparison in the comparing step, while performing a receiving process on the data signal received by the data terminal, A first control step of charging the battery by transmitting the received power to the battery; As a result, if the detected voltage value is equal to or less than the predetermined value, with performs reception processing on the data signal received by the data terminal,
And a second control step of supplying power received by the power supply terminal to an internal circuit of the portable information terminal device.

[0043]

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

(First Embodiment) In the first embodiment, by using a portable information terminal device in combination with a portable telephone terminal, a WWW (World Wide Web) on the Internet via a portable telephone network is used. A description will be given of an operation example of connecting to a server (hereinafter, referred to as a “Web server”) and displaying the page information of the Web server obtained therefrom on the portable information terminal device.

In particular, external power supply to the portable information terminal device will be described.

The present embodiment is characterized in that high-speed charging is possible while using a standard data communication terminal such as a USB for power supply.

FIG. 1 is an external view showing a first embodiment of the portable information terminal device according to the present invention. (A) is a perspective view of the portable information terminal device, (B) is a front view, and (C) is a diagram showing a state where the portable information terminal device is grasped with a hand.

FIG. 1B shows the front of the portable information terminal device.
The window 1 is located on the eyepiece side of a free-form surface prism described later. The user can magnify and view a screen of a small liquid crystal display, which will be described later, by grasping the portable information terminal device with his hand and bringing his / her eyes close to the window 1 and looking into the window. Since the portable information terminal device uses a battery as a power source and has a wireless communication function, a user can carry the portable information terminal device and view necessary information.

As shown in FIG. 1, an operation button 2 is mounted on the upper left as viewed from the front, and the user operates the operation button 2 to obtain desired information.

FIG. 2 is a diagram showing an optical path of the free-form surface prism 111.

In the figure, 112 is a small liquid crystal display for displaying information, and 113 is a small liquid crystal display 11
Reference numeral 111 denotes a free-form surface prism for enlarging the screen of the small liquid crystal display 112. These small liquid crystal displays 112,
The backlight 113 and the free-form surface prism 111 constitute an enlargement display device 110.

The free-form surface prism 111 has three optically active surfaces 111a to 111c. In the vicinity of the working surface 111c farthest from the observer, a small liquid crystal display 112 and a backlight 113 are arranged, and they are adjusted to positions that give an appropriate display to the observer. The light from the backlight 113 passes through the small liquid crystal display 112 and the working surfaces 111 c and 111
a and 111b to reach the observer.

By using the free-form surface prism 111, an enlargement optical system for enlarging and displaying an image output can be realized in a compact size.

In this embodiment, a transmissive liquid crystal display element is used as the small liquid crystal display 112.
Instead, a reflective liquid crystal display element may be used to appropriately adjust the position of the free-form surface prism shape, the backlight, and the like.

FIG. 3 is a block diagram showing an electric circuit mounted on the portable information terminal device.

The portable information terminal device includes an enlarged display device 110 including a small liquid crystal display (LCD) 112 and a backlight 113, a small computer device 120 integrated by SoC technology, and a bluetooth.
th compliant communication device 130 with low power consumption, an input device 140 that realizes pointing and button click in a two-dimensional plane equivalent to a pointing device (mouse) by combining a pressure sensitive element and a tact switch, Device comprising a LED device 150 capable of realizing a plurality of display states by flashing and blinking, and a power supply device 160 including a lithium ion secondary battery, a charging terminal, and the like, which are small enough to fit in a hand. Implemented within.

Then, the portable information terminal device transmits information obtained from the network via the communication device 130,
It is processed by the computing device 120 and operates to provide the user via the magnifying display device 110.

A USB (Universal Serial Bus) type B USB socket (not shown) is connected to the power supply device 160 and the communication device 130.
Power supply and data communication are performed via the SB socket. Details will be described later with reference to FIG.

The inside of the computer device 120 includes a CPU 1 for executing various processes according to programs described later.
21, a RAM 122 serving as a memory for storing programs and holding intermediate results of processing, and a ROM storing software such as programs and data.
123, a display control circuit 124 for controlling the small liquid crystal display 112 and the backlight 113 so as to reflect the execution result of the program, a CPU 121 and a RAM 12
2, a bus 125 serving as a data communication path, a communication control circuit 126 for controlling the communication device 130, an input control circuit 127 for controlling the input device 140, an LED control circuit 128 for controlling the LED device 150, And a power supply control circuit 129 for controlling the power supply device 160 for control and charge control. In this,
The RAM 122, the ROM 123, and the display control circuit 124
It is connected to the CPU 121 via the bus 125. Communication control circuit 126, input control circuit 127, LED control circuit 1
28 and the power control circuit 129 are connected to the CPU 121 via an I / O port. These circuits are mounted in a small size on a single semiconductor chip by SoC technology.

The ROM 123 of this configuration includes a non-rewritable storage device such as a mask ROM, and a repeatedly rewritable storage device such as a flash ROM.

FIG. 4 is a diagram showing a connection form between the portable information terminal device and the network.

A plurality of Web servers 400 exist on a network such as the Internet. The portable information terminal device 100 according to the present embodiment
The mobile phone terminal 200 is connected to the mobile phone terminal 200 via the mobile phone line network.
Connect to 0.

The mobile phone terminal 200 has a Bluetooth communication function in addition to a function of connecting to a mobile phone network.

Although the mobile telephone network is actually composed of a plurality of radio base stations and switching equipment, a detailed description of the mobile telephone network will be omitted for the sake of simplicity.

A router 300 intervenes to enter the network from the mobile telephone network. Router 300
Is often referred to as an ISP (Internet Service Provide)
r) and acts as a bridge from the mobile phone network to the network.

W issued from portable information terminal device 100
The request for the web page information is sent to the corresponding web server 4
00, and if this is accepted, the Web server 4
From 00, the Web page information is returned to the portable information terminal device 100. Further, the portable information terminal device 100 analyzes and displays the received Web page information.

In the Bluetooth communication from the portable information terminal device 100 to the portable telephone terminal 200, Dial-u
Communication is performed in accordance with the p Networking profile and the serial port profile.

Also, a plurality of Web sites are provided on the network.
The browser 500 is connected, and similarly, the Web server 40
0, and displays the page information stored therein.

The Web server 400 and the Web server
The browser 500 is a server and a browser implementing the widely used Web technology, and the page information held therein is described in HTML or the like, and includes link information described as a URL. The link information is
It is easy to access another page information from the Web browser 500 or the like. This other page information,
It may be held on the same Web server or may be held on a different Web server.

In addition to the data communication function, portable telephone terminal 200 has a general communication function that is widely used. In the present embodiment, data communication function and blue are used.
The portable information terminal device 10 using the tooth communication function
The description is limited to the function of relaying the connection from 0 to the Web server 400 only.

That is, in a state where the connection between the portable telephone terminal 200 and the portable information terminal device 100 is established by the Bluetooth communication, the portable information terminal device 1
00, the dial-up function implemented in
The mobile phone terminal 20 dials the telephone number of the SP.
Request 0. In accordance with this, the mobile phone terminal 200 establishes a link between the mobile phone terminal 200 and the ISP in the mobile phone network. And further, the portable information terminal device 1
00, a virtual communication path is established between the portable information terminal device 100 and the router 300 operated by the ISP. In this manner, the mobile phone terminal 200 plays a role of relaying the connection from the mobile information terminal device 100 to the Web server 400.

The network shown in FIG. 4 may be an intranet operated in a company or an organization, or may be the Internet that widely connects the world.

FIG. 5 shows HTTP (HyperText Transfer), which is the most common communication protocol used when a Web browser requests Web page information from a Web server.
FIG. 3 is a diagram illustrating an example of a communication sequence according to a (Protocol).

In the HTTP procedure, first, the Web browser establishes a connection with the Web server (HTTP
nect), and then HTTPr from a web browser
A request for data in the request format is issued to the Web server. Then, the Web server receiving the request analyzes the contents of the request and sends back a response in the HTTP response format. Finally, the communication is closed (HTTP
close), one HTTP session ends.

The contents of the HTTP response format will be described below.

The first line of the HTTP response format is defined as a status line (RFC 261).
6 "HTTP 1.1 version"). Here, an HTTP version, a status code, and a reason sentence are arranged separated by a blank character. In particular, the second item, the status code, consists of three numbers,
Used to classify e-format content. For example, HT
In the TP1.1 version, the following status codes are defined respectively.

The status codes are roughly classified into five categories according to the number of the first character. That is, those starting with 1 notify HTTP connection information, those starting with 2 notify success of HTTP connection, those starting with 3 notify redirection of HTTP connection, and those starting with 4 indicate client connection. Signals a server-side error, and those that begin with a 5 signal a server-side error.

100: Continue 101: Switching Protocols 200: OK 201: Created 202: Accepted 203: Non-Authoritative Information 204: No Content 205: Reset Content 206: Partial Content 300: Multiple Choices 301: Moved Permanently 302: Found 303: See Other 304: Not Modified 305: Use Proxy 307: Temporary Redirect 400: Bad Request 401: Unauthorized 402: Payment Required 403: Forbidden 404: Not Found 405: Method Not Allowed 406: Not Acceptable 407: Proxy Authentication Required 408: Request Time -out 409: Conflict 410: Gone 411: Length Required 412: Precondition Failed 413: Request Entity Too Large 414: Request-URI Too Large 415: Unsupported Media Type 416: Requested range not satisfiable 417: Expectation Failed 500: Internal Server Error 501: Not Implemented 502: Bad Gateway 503: Service Unavailable 504: Gateway Time-out 505: HTTP Version not supported FIG. 6 is a flowchart showing a procedure of the operation of the portable information terminal device 100.

A program describing this operation processing is stored in the ROM 123 shown in FIG.
121. With this execution, the input control circuit 127, the display control circuit 124, the communication control circuit 126, and the like are used as needed.

First, step S at the start of the program
At 1001, the setting information is read. Subsequent processing contents are determined based on this setting information. The contents of the setting information are stored in the ROM 123. Typical setting information is fixedly stored in the ROM 123 together with programs and the like. However, some setting information is set and changed by the user and stored in another area of the ROM 123.

Next, in step S1002, an instruction from the user is waited. The standby target here is typically
This is an input signal from the input device 140, but may be an arrival of communication data from the communication device 130.

Then, in step S1003, an instruction or the like from the user is received.

In step S1004, it is determined whether or not the received instruction instructs the end of the program. If the instruction indicates termination, the program is terminated. On the other hand, if the termination has not been instructed, the process proceeds to step S1005.

In step S1005, a process corresponding to the content of the instruction is executed, and thereafter, the process returns to step S1002 to wait for the next instruction. The processing program executed in step S1005 is also stored in the ROM 12
3 is executed by the CPU 121.

FIG. 7 is a flowchart showing a procedure of a Web access process executed in portable information terminal device 100. The program describing this processing is called from step S1005 in FIG. 6 in response to an instruction from the user, and has a Web access function, ie, W
A function of acquiring and displaying Web page information from an Web server is realized.

The instruction from the user is, for example, a case where the user inputs a click signal from the input device 140 when the pointing cursor on the display screen is at the anchor position (link information display position). And the case where URL data of Web page information to be acquired is directly input.

First, in step S2000, the enlargement display device 110 is switched to the low power consumption mode. For example, a backlight 113 and a small liquid crystal display 112
Stop supplying power to

Next, in step S2001, the designated URL is obtained. The URL may be instructed directly by the user or by selecting an anchor. In the latter case, the anchor selected by the user is specified from the position information of the click, and the link information contained therein is acquired.

Subsequently, in step S2002, the obtained URL is analyzed. According to this analysis, the We to be connected
b Determine the server and protocol.

Subsequently, in step S2003, it is determined whether or not the designated URL is a URL corresponding to data existing in the portable information terminal device 100 itself. As a result of the determination, if it exists in the own device, step S200
The process proceeds to step S2004, and if not, the process proceeds to step S2004.

This determination is made when the URL instruction directly refers to data in the own device, or when the URL refers to external data but the data is cached in a history file or a storage file. Is also taken into account.

In step S2004, since the designated page information does not exist in the own device, the designated Web server sends the UR to the designated Web server in order to obtain necessary Web page information.
Connect with the protocol indicated by L.

Here, the HTTP protocol is typically used, but an FTP (File Transfer Protocol) protocol or the like may be specified. When the specification of the protocol is omitted, the HTTP protocol is used.

Then, in step S2005, the Web server specified by the URL from the connection destination Web server
The web page information is acquired, and the process proceeds to step S2007.
Specifically, it requests the Web server for the data specified by the URL, and then waits for a response from the Web server, and acquires desired Web page information.

On the other hand, in step S2006, since the designated page information exists in the own device, necessary Web page information is obtained from the own device, and the process proceeds to step S2007.

In the next step S2007, the acquired W
Analyze web page information. Specifically, the content described in the HTML format or the like is read, and an image or other multimedia information embedded in the content or an anchor (link information) is detected, and then the logical structure of the page information is determined.

Subsequently, in step S2008, the magnifying display device 110 is switched to the normal mode. That is, the backlight 113 and the small liquid crystal display 1
If the power supply to the power supply 12 has been stopped, the power supply is restarted.

Then, in step S2009, the analyzed Web page information is displayed on the small liquid crystal display 112. Specifically, the acquired Web page information is laid out in an appropriate arrangement based on various embedded information and the logical structure of the analysis result. Then, the layout result is reflected on the screen of the small liquid crystal display 112.

Thereafter, in order to wait for the next instruction from the user, the present process is terminated, and the flow returns to step S1002 in FIG.

FIG. 8 is a diagram showing the Web displayed on the small liquid crystal display 112 by the Web access processing shown in FIG.
FIG. 4 is a diagram illustrating an example of page information. Here, the URL data "http://www.xyznews.com
/ Jp / "indicates the web page information displayed as a result of direct input.

The Web page information is electrically transmitted from the display control circuit 124 to the small liquid crystal display 112, and the display image formed on the small liquid crystal display 112 is optically transmitted by the light from the backlight 113. The transmitted light passes through the optically expanding action of the free-form surface prism 111 to form an image at the observer's position.

FIG. 9 is a flowchart showing a procedure of a setting process executed in portable information terminal device 100. The program describing this process is called from step S1005 in FIG. 6 in response to an instruction from the user, and implements a function of setting values specified by the user to various setting items of the portable information terminal device 100. Specifically, the designation by the user is, for example, a case where a setting function is selected from a menu item on the display screen and the designation is performed by this function, or a case where the user directly inputs.

First, in step S3001, the current setting value of portable information terminal device 100 is displayed on small liquid crystal display 112, and a setting session is started. FIG.
0 is a view showing an example of the set values displayed on the small liquid crystal display 112.

Subsequently, in step S3002, the system waits for a user input on the setting screen.

In step S3003, a user input is determined. If the user input is a setting end command, the process advances to step S3004. The setting end instruction is one of “submit” and “cancel”. On the other hand, if the instruction is not the setting end instruction, step S
Proceed to 3007.

In step S3004, the setting end instruction is “submit” or “cancel”.
Is determined. If the former, step S
Proceeding to 3005, the processing is terminated after the held data of the setting content during the setting session is reflected on the portable information terminal device 100. Here, the setting contents are stored in the portable information terminal device 100.
The processing of reflecting the setting contents includes storing the setting contents in the ROM 123.

On the other hand, if “cancel” is instructed, the flow advances to step S3006 to discard the contents of the set session and end the processing.

If it is determined in step S3003 that the received instruction is not a setting end instruction, the flow advances to step S3007.
The setting content received by the user input is reflected on the data held in the setting session and on the screen.

Then, the flow returns to step S3002 to wait for the next user input.

FIG. 11 is a diagram showing the USB socket, the power supply device 160 and the communication device 130 in the portable information terminal device 100.

[0111] Portable information terminal device 1 in the present embodiment.
00 functions as a USB device and can be connected to a USB host device. Therefore, a type B USB socket is provided as hardware.
This USB socket also functions as a charging terminal of the portable information terminal device 100. Wiring from the USB socket
As shown, the communication device 130 and the power device 1
60. That is, the communication device 13
0 is connected to terminals Vbus, D + and D−, and power supply device 160 is connected to terminal Vbus. Terminal GND
Is grounded.

The wiring to the communication device 130 conforms to the USB, and the communication device 130 detects the connectivity and the communication speed based on the signal Vbus and the data signal D + / D-. Is passed.

On the other hand, the power supply device 160 is provided with a circuit assuming that a higher voltage is supplied than the normal USB voltage. This circuit detects the voltage level supplied to the terminal Vbus, and if the detected voltage level is a value within a normal voltage range in USB, the portable information terminal device from the terminal Vbus via the communication device 130. Power is supplied to each circuit in the portable information terminal device 100 to suppress discharge from a battery built in the portable information terminal device 100. On the other hand, if the detected voltage level is U
When the voltage exceeds the normal voltage range in SB, the battery is charged from the terminal Vbus via the power supply device 160.

In this manner, portable information terminal device 100
In addition to connecting a normal USB host device, a dedicated charging device 900 (FIG. 12) capable of supplying power at a high voltage exceeding the normal voltage range in USB can be connected.

FIG. 12 is a diagram showing an example of a connection configuration of the USB host device (PC 800) and the charging device to the portable information terminal device 100.

FIG. 12A shows the portable information terminal device 100.
Shows a case where a PC (Personal Computer) 800 is directly connected to the PC. In this case, an ordinary USB is used in accordance with the USB specification.
PC 800 that becomes a USB host device via a cable
And the portable information terminal device 100 serving as a USB device. Here, power is supplied from the terminal Vbus to the respective circuits in the portable information terminal device 100 via the power supply device 160, and the US V is supplied via the terminals D + / D-.
Data communication is performed in accordance with the B protocol.

On the other hand, FIG. 12B shows a personal computer (PC) connected to the portable information terminal device 100 via the charging device 900.
ter) 800 is connected. In this case, the connection between the charging device 900 and the PC 800 is a connection in accordance with the USB specification, but the charging device 900 and the portable information terminal device 10 are connected.
The connection with 0 is a dedicated specification. Specifically, data communication is performed between the charging device 900 and the portable information terminal device 100 according to the USB specification, but the power supply specifications are different, and power supply at a higher voltage than the USB specification is performed by the data charging device 900. For the portable information terminal 100. Details will be described with reference to FIG.

Although not shown in FIG. 12, PC 800 is not connected to portable information terminal device 100, and charging device 90 is not connected.
In some cases, only 0 may be connected.

FIG. 13 is a block diagram showing the internal configuration of charging apparatus 900.

The external connection terminals of the charging device 900 include a USB socket (type B) for connecting to an upstream USB host device, a USB plug (type B) for connecting to a downstream USB device, and a power supply. And a power supply terminal for obtaining. In the present embodiment, the PC 800 is connected to a USB socket, the portable information terminal device 100 is connected to a USB plug, and an external power supply is connected to a power supply terminal.

In charging device 900, the data signal is
USB repeater 9 from terminals D + and D- of USB socket
10, the data is transferred to the terminals D + and D- of the USB plug. Regarding the Vbus signal, the terminal Vbus of the USB socket is used to detect whether or not there is connectivity.
US via B repeater 910 and overcurrent controller 930
The signal is indirectly transmitted to the terminal Vbus of the B plug.

The power supplied from the power supply source is
It is input to the overcurrent controller 930 via the regulator 920. The overcurrent controller 930 is connected to the USB repeater 910.
And receives the control signal from the
Supply to terminal Vbus of SB plug. At this time, USB
The power supplied to the terminal Vbus of the plug is supplied at a voltage higher than the normal USB voltage under the control of the overcurrent controller 930 so that the portable information terminal device 100 can be charged efficiently. The power at this time is, for example, 9.5 V,
0.8A.

The charging device 90 according to the present embodiment
0 is positioned as a USB signal relay device in the same manner as the USB hub described in the USB specification. In particular, independent power supply from the USB host device via the terminal Vbus to supply power to the USB device with its own power supply is the same as the positioning of a USB hub called a self powered hub.

That is, among the signals received from the PC 800 as the USB host device, the charging device 900 does not change the signal level or contents of the data communication signal transferred at the terminals D + / D-, It relays to a certain portable information terminal device 100, but with respect to power supply via the terminal Vbus, by using a unique power supply, independent power supply is supplied to the portable information terminal device 100 regardless of power supply supplied from the USB host device. Do it.

As described above, it is possible to supply power to the portable information terminal device 100 which is small enough to be put in the hand by using a dedicated power supply device.

In particular, by using a combination of standard data communication specifications such as USB and a dedicated power supply device, it is possible to achieve both data communication with various connection destinations and high-speed charging (reduction of charging time). It becomes.

In this embodiment, charging device 900 is supplied from an external source such as a power outlet or an AC adapter.
The portable information terminal device 100 may be configured so that an external power source is not required when a power is supplied to the portable information terminal device 100 by incorporating a large-capacity battery.

In the present embodiment, a case has been described in which data communication and power supply are performed in accordance with a USB-compliant connection terminal and communication procedure.
Data communication and power supply may be performed in accordance with a 94-compliant connection terminal or communication procedure.

When the portable information terminal device has a wireless communication means such as Bluetooth at the same time as the above-mentioned USB wired communication means, the key information in the encrypted communication is transferred by the wired communication. It is also possible to use the wired communication means and the wireless communication means according to the communication contents by performing the used encrypted communication.

(Second Embodiment) Next, a second embodiment will be described.

The configuration of the second embodiment is basically similar to that of the first embodiment.
Since the configuration is the same as that of the first embodiment, in the description of the second embodiment, the configuration of the first embodiment will be used, and only different components will be described.

In the second embodiment, in order to improve the convenience in addition to the charging function and the data relay function in the charging device,
It has an information input function. For example, a keyboard function for data input is provided as an information input function.

FIG. 14 is a block diagram showing the internal configuration of charging apparatus 1000 according to the second embodiment.

This configuration is almost the same as the configuration of the charging device 900 in the first embodiment, except that a keyboard function unit 940 is newly provided. Input data from the keyboard function unit 940 is output to a USB plug via the USB repeater 910 and transmitted to the portable information terminal device 100 as a USB device.

At this time, the USB repeater 910
It operates in the same manner as a hub repeater at a hub to avoid collision of USB packets. That is, U
The SB repeater 910 uses a USB
B monitors the data transmission from the host device, and when it detects that the data has been transmitted, the keyboard function unit 94
Buffer input data from 0. And U
When data transmission from the SB host device is interrupted, the input data from the keyboard function unit 940 is transmitted to the portable information terminal device 100 which is a USB device.

FIG. 15 shows a charging device 1 with a keyboard function.
FIG. 3 is a diagram showing a connection form between the mobile information terminal device 100 and the mobile information terminal 100.

Here, the PC 8 serving as a USB host device
Although the connection of 00 is omitted, a connection form in which the PC 800 is connected may be used.

The charging apparatus 1000 shown in FIG. 15 includes a small liquid crystal monitor for monitoring input data from the keyboard function section 940.
A configuration in which a small liquid crystal monitor device is not included may be employed.

Also, In the second embodiment, the charging device having the keyboard function as the information input function has been described. However, a simpler information input device, for example, an input device having only one or several switch buttons may be used. .

Further, as shown in FIG. 14, in the charging apparatus 1000 according to the second embodiment, a U
A USB socket for connecting an SB host device is provided. However, since the charging device 1000 has an information input function, the USB socket may be omitted, and a charging device specialized in the charging function and the data input function may be provided.

As described above, by connecting the charging device 1000 having the information input function to the portable information terminal device 100, which greatly simplifies the input device with priority on portability, the portable information terminal device 100 Convenience will be further improved.

In addition to the above-described first and second embodiments, the portable information terminal device notifies the charging device of the remaining power of the battery built-in to the charging device via data communication. The charging device connects the terminal Vb to the portable information terminal device in accordance with the remaining amount of the battery stored in the terminal device.
The voltage supplied via us may be automatically adjusted. That is, when the remaining power of the battery is larger than the predetermined value, the power supply voltage is reduced to the normal power supply voltage of USB so that the portable information terminal device does not perform charging. Is smaller than a predetermined value, the power supply voltage is set higher than the normal USB power supply voltage, and the portable information terminal device is charged.

Further, a storage medium storing a program code of software for realizing the function of the portable information terminal device in each of the above-described embodiments is supplied to a system or an apparatus, and the computer (or CPU or MPU) of the system or the apparatus is supplied. It is needless to say that the present invention can also be achieved by reading and executing the program code stored in the storage medium.

In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiments, and the storage medium storing the program code constitutes the present invention. .

As a storage medium for supplying the program code, for example, a floppy disk, hard disk, optical disk, magneto-optical disk, CD-ROM, CD
-R, a magnetic tape, a nonvolatile memory card, a ROM, or the like can be used.

When the computer executes the readout program code, not only the functions of the above-described embodiments are realized, but also an OS or the like running on the computer based on the instructions of the program code. Performs part or all of the actual processing, and the processing realizes the functions of the above-described embodiments.
Needless to say, this is included in the present invention.

Further, after the program code read from the storage medium is written into a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, based on the instruction of the program code, It is needless to say that the present invention includes a case where the CPU or the like provided in the function expansion board or the function expansion unit performs part or all of the actual processing, and the processing realizes the functions of the above-described embodiments. No.

[0148]

As described in detail above, claims 1 and 1
According to the invention described in claim 8 or claim 19, in a portable information terminal device including a battery and a connection portion for wired connection to an external device, a power supply terminal included in the connection portion and receiving power from the external device And a data terminal included in the connection unit, for receiving a data signal from the external device, and a detecting unit for detecting a magnitude of a voltage applied to the power supply terminal, and detected by the detecting unit. When the voltage value is higher than a predetermined value, the reception processing is performed on the data signal received by the data terminal, and the power received by the power supply terminal is transmitted to the battery for charging. On the other hand, when the voltage value detected by the detection means is equal to or less than the predetermined value, the portable information terminal device performs a reception process on the data signal received by the data terminal and outputs the power received by the power supply terminal. To the internal circuit of

As a result, high-speed charging can be performed at a high voltage while using a standard connection terminal. Thus, miniaturization of the portable information terminal device and improvement in convenience are realized.

[Brief description of the drawings]

FIG. 1 is an external view showing a first embodiment of a portable information terminal device according to the present invention.

FIG. 2 is a diagram illustrating an optical path of a free-form surface prism.

FIG. 3 is a block diagram showing an electric circuit mounted on the portable information terminal device.

FIG. 4 is a diagram showing a connection form between a portable information terminal device and a network.

FIG. 5 is a diagram showing an example of an HTTP communication sequence.

FIG. 6 is a flowchart illustrating a procedure of an operation of the portable information terminal device.

FIG. 7 is a flowchart illustrating a procedure of a Web access process executed in the portable information terminal device.

8 is a diagram showing an example of Web page information displayed on a small liquid crystal display by the Web access processing shown in FIG. 7;

FIG. 9 is a flowchart illustrating a procedure of a setting process executed in the portable information terminal device.

FIG. 10 is a diagram showing an example of set values displayed on a small liquid crystal display.

FIG. 11 is a diagram showing a USB socket, a power supply device, and a communication device in the portable information terminal device.

FIG. 12 is a diagram illustrating an example of a connection mode of a USB host device (PC) and a charging device to the portable information terminal device.

FIG. 13 is a block diagram showing an internal configuration of the charging device.

FIG. 14 is a block diagram illustrating an internal configuration of a charging device according to a second embodiment.

FIG. 15 is a diagram showing a connection form between a charging device with a keyboard function and a portable information terminal device.

[Explanation of symbols]

REFERENCE SIGNS LIST 100 portable information terminal device 110 magnifying display device (magnifying optical device) 111 free-form surface prism 112 small liquid crystal display (LCD, liquid crystal display device) 113 backlight 120 small computer device 121 CPU 122 RAM (memory) 123 ROM (memory) 124 display control circuit 125 bus 126 communication control circuit (first control means, second control means) 127 input control circuit 128 LED control circuit 129 power supply control circuit (first control means, second control means) 130 communication Device (wireless connection interface unit) 140 Input device (input unit) 150 LED device 160 Power supply device (detection unit) 200 Mobile phone terminal 300 Router 400 Web server 500 Web browser 800 Personal computer (PC, external device) 900 Charging device (external device) 910 USB repeater 920 Regulator (DC power supply) 930 Overcurrent controller 940 Keyboard function unit 1000 Charging device D + terminal (data terminal) D- terminal (data terminal) Vbus terminal (Power supply terminal)

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuichi Sakauchi 3-30-2 Shimomaruko, Ota-ku, Tokyo F-term in Canon Inc. (reference) 5B011 DA06 DA13 DB22 EA05 GG04 5G003 AA01 BA01 CA14 DA04 5H030 AA02 AS11 BB01 BB08 BB09 DD05 FF41 FF44 5K027 AA11 GG04

Claims (19)

[Claims] 1. A portable information terminal device comprising: a connection portion for wired connection to an external device; and a battery, a power supply terminal included in the connection portion and receiving power from the external device, and a power supply terminal included in the connection portion. A data terminal that receives a data signal from the external device, a detecting unit that detects a magnitude of a voltage applied to the power supply terminal, and a voltage value detected by the detecting unit that is greater than a predetermined value. A first control unit for performing a reception process on the data signal received by the data terminal and transmitting the power received by the power supply terminal to the battery to perform charging; and a voltage value detected by the detection unit, When the value is equal to or less than the predetermined value, a reception process is performed on the data signal received by the data terminal, and Portable information terminal device; and a second control means for feeding the only took power to the internal circuit of the portable information terminal device. 2. A display device comprising: a magnifying optical device and a liquid crystal display device; an input unit operated by a user; a processing unit comprising a CPU and a memory; and a wireless connection interface unit. The portable information terminal device according to claim 1. 3. The portable information terminal device according to claim 2, wherein said magnifying optical device includes a free-form surface prism. 4. The wireless connection interface according to claim 1, wherein:
3. The portable information terminal device according to claim 2, wherein the portable information terminal device comprises an interface of a Bluetooth system. 5. After the key information is transmitted through the connection unit of the wired connection, encrypted communication is performed using the transmitted key information through the wireless connection interface unit. 3. The mobile terminal device according to 2. 6. The portable terminal device according to claim 1, wherein the connection unit of the wired connection conforms to a USB or IEEE1394 wired connection interface specification. 7. The mobile terminal device according to claim 1, wherein the predetermined value is a power supply voltage defined by the specification of the wired connection interface. 8. A charging device comprising an input terminal, an output terminal, and a DC power supply, an input data terminal included in the input terminal and receiving a data signal from an input external device, and the output terminal. An output-side data terminal for sending a data signal to an output-side external device; and a power-supply terminal included in the output-side terminal for supplying power from the DC power supply to the output-side external device. And a charging device. 9. The DC power supply is a USB or IEEE.
9. The charging device according to claim 8, wherein the charging device outputs a voltage higher than a power supply voltage defined by the 1394 wired connection interface specification. 10. The charging device according to claim 8, wherein the data signal received at the input data terminal is transferred to the output data terminal. 11. The charging device according to claim 8, wherein the input side terminal and the output side terminal are terminals determined by USB or IEEE1394 wired connection interface specifications. 12. The charging device according to claim 8, wherein the DC power source is a power source supplied with power from an external power source. 13. The charging device according to claim 8, wherein the DC power supply is a battery built in the charging device. 14. The charging device according to claim 8, further comprising an information processing function unit having an output terminal connected to the output data terminal. 15. The charging device according to claim 14, wherein the information processing function unit comprises a data input device. 16. The output-side external device includes a built-in battery, and further includes a variable unit that changes an output voltage of the DC power supply according to a remaining amount of the battery of the output-side external device. The charging device according to claim 8. 17. A DC power supply that outputs a voltage higher than a power supply voltage defined by a USB or IEEE 1394 wired connection interface specification, and a configuration defined by the wired connection interface specification, wherein the power output from the DC power supply is supplied to an external device. A power supply terminal for supplying power to the battery. 18. A connection unit for wired connection to an external device, a battery, a power supply terminal included in the connection unit and receiving power from the external device, and a data signal from the external device included in the connection unit. In a power supply method applied to a portable information terminal device, comprising: a data terminal for receiving data; and a detection means for detecting a magnitude of a voltage applied to the power supply terminal, wherein a voltage value detected by the detection means is set to a predetermined value. And a comparison step of comparing the detected voltage value with the data signal received by the data terminal if the detected voltage value is greater than the predetermined value. A first control step of charging the battery by transmitting the power received by the terminal to the battery; If the supplied voltage value is equal to or less than the predetermined value, the reception processing is performed on the data signal received by the data terminal, and the power received by the power supply terminal is supplied to the internal circuit of the portable information terminal device. And a second control step. 19. A connection portion for wired connection to an external device, a battery, a power supply terminal included in the connection portion for receiving power from the external device, and a data signal from the external device included in the connection portion. A computer-readable storage medium storing a power supply method applied to a portable information terminal device including a receiving data terminal and a detection unit for detecting a magnitude of a voltage applied to the power supply terminal, as a program. A comparison step of comparing the voltage value detected by the detection means with a predetermined value; and, as a result of the comparison in the comparison step, if the detected voltage value is larger than the predetermined value, The data signal received by the data terminal is subjected to reception processing, and the power received by the power supply terminal is transmitted to the battery. A first control step of sending the data signal to the data terminal and charging the data signal received by the data terminal if the detected voltage value is equal to or less than the predetermined value as a result of the comparison in the comparison step. A second control step of performing processing and supplying power received by the power supply terminal to an internal circuit of the portable information terminal device.