KR20020037210A - Apparatus and methods of connecting to data or voice network - Google Patents

Abstract

PURPOSE: A system for connecting to data or voice networks is provided to make a user exchange a predetermined signal with a display device, to obtain information for connecting with the voice network or the data network, and to store the information or to transmit the information to various connecting devices, so that the user can connect to the corresponding data or the voice networks. CONSTITUTION: A mobile unit(100) comprises as follows. A transmission module(130) is one of an RF transmission module for transmitting local wireless data to an RF receiving module of a base unit(300) and an optical transmission module for transmitting optical data to an optical receiving module of the base unit(300). A receiving module(140) is one of an RF receiving module for receiving local wireless data transmitted from the RF transmission module of the base unit(300) and an optical receiving module for receiving optical data transmitted from the optical transmitting module of the base unit(300). A control module(120) controls each unit. The base unit(300) comprises as follows. A memory controls the entire base unit(300), and stores data of the base unit(300), then stores externally-inputted data. A control module(320) inputs/outputs/analyzes/processes/stores the external data. A transmission module(330) is one of the optical transmission module for transmitting predetermined data to the optical receiving module of the mobile unit(100) and the RF transmission module for transmitting the data to the RF receiving module of the mobile unit(100). A receiving module(340) is one of the optical receiving module for transmitting the data transmitted from the optical transmitting module of the mobile unit(100) to the control module(320) and the RF receiving module for transmitting the data transmitted from the RF transmission module of the mobile unit(100) to the control module(320).

Description

Apparatus and methods of connecting to data or voice network

The present invention relates to data or voice network access devices and methods. In particular, the present invention obtains information for a user to exchange a predetermined signal with a display device such as an advertisement board and the like to connect to a data network such as the Internet or a voice network such as a telephone, and store this information, or to store various information such as an internet terminal or a telephone The present invention relates to an apparatus and a method for transmitting to a connection means so that a user can access a desired data network such as the Internet or a voice network such as a telephone. In the present invention, it is to be understood that data communication is not limited to the Internet, and that voice communication is not only performed through a telephone.

Internet access is generally based on typing Uniform Resource Locators (URLs) in a browser window. To do this, the user must know in advance the Internet address of the site to which they are connecting. To make this process easier, the browser adds the ability to remember favorites or recently visited addresses so that you can reuse the URLs you've already used without typing new ones. Also, by providing hypertext function to internet (html) document, if you click internet address in internet document, you can directly access the site. You can also exchange URLs by various methods such as e-mail. This is the most common and natural connection for the tethered Internet.

Recently, however, there is a rapid increase in the number of wireless Internet accesses using mobile terminals such as mobile phones, PDAs (Personal Digital Assistants), hand-held PCs, and notebook PCs equipped with wireless modems. In this case, from the user's point of view, it can be seen that the access method of the wired Internet is used or modified slightly.

First of all, the wireless Internet terminal has widely used the menu method implemented by the tree structure adopted by the Wireless Application Protocol (WAP), etc., which provides appropriate information for each menu level and provides the context of the step. Provide a custom menu item. If the user wants additional information, he selects one of the menu items provided in that state, and as a result, additional new information is provided, and a new menu item for this new context is also provided. This method uses this form repeatedly.

In addition, wireless Internet terminals can be connected to the Internet in the same way as wired Internet. First, a URL can be accessed or a favorite or recently visited site can be remembered and reused. Generally, if a wireless Internet terminal has a function of an operating system, all wired Internet access methods can be applied as it is.

Alternatively, the user can push a URL to a wireless Internet terminal such as a mobile phone using a short message service (SMS) or a message push function such as WAP, and reply to the received URL message. You can also access the Internet. This push function can be implemented in various WAP phones, Java phones, or wireless Internet terminals equipped with an OS such as Windows or Linux.

However, all of the above methods do not deviate significantly from the fundamental philosophy or mode of the wired Internet access method, and do not properly utilize the fundamental characteristics of the wireless Internet. The wireless internet is literally a mobile internet. If the existing wired Internet terminal is made on the basis of use in a fixed place, the wireless Internet terminal has the characteristic of allowing the user to carry the Internet anywhere at any time regardless of time and place. In other words, the characteristic of the wireless Internet is mobility and spontaneity of information acquisition. But the most intuitive and universal way of getting information is by looking at it. In particular, it is a common aspect of human life to obtain and respond to information through various display devices such as billboards, billboards, posters, etc. that are seen while walking, driving in a bus or subway, driving while driving. Until now, this area was not regarded as an important object or means of wireless Internet access because there was no mode to access the Internet immediately in response to the information provided by these billboards.

For example, let's say a person walks down the street and sees a Hawaii tourist sign on a billboard. If the person is interested in the Hawaiian tourism that this ad shows, you can immediately access the Internet site for Hawaiian information and get information about Hawaii's history, geography and climate, or book a hotel or ticket. You will want to book it. Of course, if the poster is marked with a URL, you can memorize him and type it into a wireless Internet terminal. However, typing on a wireless Internet terminal while walking is not an easy task, and even if you type, it must be quite inconvenient. It would be difficult to find a more intuitive and easier way if we could simply shoot and connect to the display. It can also be useful in many ways if you can easily store this information or send it elsewhere.

The situation is similar for voice-based phones. Display devices, such as billboards on the street, often have a phone number listed, of course, you can memorize or record the call. In this case, the fact that the phone number should be memorized or recorded even with a mobile phone remains the same. However, if it is possible to automatically shoot and call by simply firing a signal toward the display as in the above example, it will be difficult to find an easier and more intuitive way. In addition, if the Internet access information (URL) or a phone number, etc. can be easily stored or transmitted to other places, this may also be useful in various ways.

In the prior art in this field related to the present invention, there is a terminal equipped with an Infrared Data Association Port (IrDA Port). Mobile phones and PDA terminals often have built-in infrared ports and are used for information exchange between terminals or between a terminal and a PC. However, these devices are essentially only used to replace wires wirelessly.

In addition, a smart card using a proximity wireless communication method (Smart Card) can be seen as a conventional technology, but this is also just a device for data exchange.

Another conventional technique is a free space laser communication method. Recently, many optical communication companies have developed and used this technology, which uses laser light in the air and uses it as a data communication means.

The present invention aims to provide a method and apparatus for connecting to a data or voice network, in order to solve the problems with the prior art as described above.

Other objects and advantages of the present invention will become more apparent from the following detailed description of the invention and the accompanying drawings.

1 illustrates an example in which a mobile unit user communicates with a base unit after viewing an advertisement.

2 is a block diagram of a system for accessing a voice network and a data network using a mobile unit according to the present invention.

3 is an internal configuration diagram of a wireless mobile terminal used as a connection module according to the present invention.

4 is a preferred embodiment of a mobile unit according to the present invention.

5 is an exemplary data flow diagram of a mobile unit and a base unit according to the present invention.

6 is a block diagram of another embodiment of a system for connecting to a voice network and a data network using a mobile unit according to the present invention;

7 is a diagram illustrating a data format configuration when a transmission medium is changed according to the present invention.

8 is a data format configuration diagram according to the present invention.

9 is another preferred embodiment of the mobile unit according to the invention.

10 is a preferred embodiment of the optical transmission module of FIG.

11 is a preferred embodiment of the optical receiving module of FIG.

12 is an SMS processing flowchart of the SMS service module according to the present invention.

FIG. 13 is a data flowchart when using a designated site in the apparatus of FIG. 2; FIG.

14A is an exemplary data format sent by a mobile unit to a base unit in accordance with the present invention.

14B is an exemplary data format sent by a mobile unit to a base unit in accordance with the present invention.

15 is a block diagram of a mobile unit receiving module according to the present invention.

16 is a block diagram of a mobile unit transmission module according to the present invention.

Figure 17 illustrates a composite wireless terminal in accordance with the present invention.

18 is a flowchart of operation of the base unit according to the present invention;

19 is a block diagram of an optical receiving module of the base unit of FIG.

20 is a block diagram of a service module according to the present invention.

21 is another configuration diagram of an optical receiving module of the base unit according to the present invention;

Fig. 22 is a block diagram of a base unit transmitter in the case of using the RF of Fig. 2.

Fig. 23 is a diagram illustrating the format of response signal data used in the base unit of the present invention.

Fig. 24 shows an example of a response signal and content related additional information data sent from the base unit to the mobile unit of the present invention.

25 is a data processing flowchart of the collision detection module according to the present invention.

26 is a configuration diagram according to FIG. 25.

27 is a conceptual diagram of a data security and access control method of a simple access control method between a mobile unit, a base unit, and an external access device according to the present invention;

28 is a conceptual diagram of a data security and access control method of an access code exchange method between a mobile unit, a base unit, and an external access device according to the present invention;

29 is a flowchart of an access code exchange method according to the present invention.

30 is a conceptual diagram of a data security and access control method of a hash code using a time stamp taken between a mobile unit, a base unit, and an external access device according to the present invention;

31 is a conceptual diagram of a data security and access control method of an access code generation method between a mobile unit, a base unit, and an external access device according to the present invention;

<Brief description of the main parts of the drawings>

100: mobile unit 102: input unit

104: display unit 106: external input and output unit

108: memory 110: connection module

112: telephone device 120, 320: control module

130,330: Transmission module 131,333: Encoder

132,142 ', 335: Modulator 133: Driver

134,141 ': antenna 140,340: receiving module

141: photodetector 142,142 ': amplifier

143,143 ', 345', 346: Demodulator 144,144 ', 347': Decoder

150,250: I / O and display 260: display

200: external connection device 300: base unit

310: service module 311: processing unit

312: SMS server 313: e-mail server

314: paging server 332: transmitting unit

334: collision detection module 337: RF transmitter

341 ': optical filter 342: photodetector

342 ': PIN photodiode 343': front end

344: Amplifier 344 ': Equalizer

346 ': detector 348: decoder

348 ': synchronizer 500: user

550: database 600: display device

650: wired or wireless site specified 700: default data format

710: header 711: header

712,713 ID 714,724,734: ECC

715: Unique Code 716: Type of Data Type

717: Data Format Version 720: Body

722: content 730: tail

732 footer

1310: USB 1320: IEEE1394

1330: RS232XC 1340: Microprocessor

1350: Peripheral device 1360: Universal interface

1370: keypad 1380: mode selection interface

1390: transmitting terminal 1395: receiving terminal

I. Composition and Operation of the Invention

1. Overview

In the present invention, terms of a new concept are defined and used for simplicity and accuracy of expression. These terms are defined or explained in the detailed description of the present invention, but are summarized in a glossary later in the detailed description of the invention for the purpose of understanding the present invention.

In order to help understand the configuration of the present invention, first, the gist of the present invention will be described with simple examples, and then an exact description of each device and method will be given.

There are a myriad of kinds of display devices that a person touches indoors or outdoors. However, the present invention will be described using an advertising display panel as an example. This display device mainly aims to deliver the intended information to the viewer. In particular, the display panel for advertising is mainly intended for the delivery of the intended advertising message.

The characteristics of such a display device are generally directed to an unspecified number of the public, and in this case, it is configured to deliver only uniform contents. Therefore, if the intended product promotion is the purpose of the display panel for advertisement, the usefulness of the display panel will be greatly increased by allowing the individual to know more detailed information in response to the displayed image or message. If an advertising display panel advertises about traveling to Hawaii, it would be better if interested viewers could respond and collect various information about Hawaii's climate, history, and attractions.

In order to make this possible, there must be a means of communication carried by the individual. As the communication means carried by the individual, a mobile phone or a wireless Internet terminal having a means for communicating with a predetermined device attached to the display device will be commonly used. But that's not necessarily the case. The device attached to the display device according to the present invention may include an address of an external device that can provide additional detailed information regarding content currently being displayed, in particular, a uniform resource locator (URL) or a call center (URL). B) storing the telephone number of an automatic response system (ARS), an unified messaging system (UMS) ID, and the like (in the present invention, collectively referred to as "meta information") that can be extracted in an indirect manner. It must be equipped with a means of communication and means of sending this meta-information to individuals wishing in a variety of ways and ways.

As described above, the "base unit" is collectively referred to as a device attached to the display device, which stores meta information about the currently displayed or content, is in charge of communication with a device carried by an individual, and other appropriate functions are added. It is called. The structure and function of this base unit are described in detail below.

A device that can be used in conjunction with a communication terminal such as a personal digital assistant (PDA) or a mobile phone equipped with a wireless modem capable of communicating with the outside, such as a web connection or a voice telephone, can be carried by an individual. Called "Mobile Unit". In general, the mobile unit may be manufactured integrally with a communication terminal such as a PDA or a mobile phone, or may be manufactured as an independent unit separate from the communication terminal. In the case where the mobile unit is manufactured as an independent unit, it is preferable to provide mutual communication so that the mobile unit can be used in connection with an external connection unit such as a communication terminal or a PC. Mobile units are literally mobile units, but they don't have to be portable. Rather, it is merely a functional classification. For example, a desktop PC or the like can also be equipped with appropriate communication means with the base unit in the present invention to have the function of a mobile unit. In this case, the desktop PC should also be considered a mobile unit. The structure and function of this mobile unit are described in detail below in the present invention.

Figure 1 shows the Hawaii tourism propaganda displayed on the advertising display device and the mobile unit users in response to the communication with the base unit shows that. In general, the user 500 of the mobile unit 100 transmits information about itself and desired connection information to the base unit 300 when the user 500 wants to obtain more detailed information by viewing the contents of the display device 600 as shown in FIG. 1. The communication with the base unit 300 is started to connect to a data network such as the Internet or a voice network such as a telephone by the following various methods.

2 is a block diagram of a system for accessing a voice network and a data network using a mobile unit according to the present invention.

In order to implement the gist of the present invention, an independent device of the mobile unit 100 and the base unit 300 is largely required, and a user may use the external connection device 200 for his convenience. And the general mobile unit 100 is composed of a connection module 110, a control module 120, a transmission module 130 and a receiving module 140, the base module 300 is a normal service module 310, the control module It consists of a 320, a transmission module 330 and a receiving module 340. Data input / output devices 150 and 250 and a display device 260 for displaying the same may be attached to the mobile unit and the base unit, respectively. The base unit is generally used in conjunction with the display device 260. The public network is connected to a plurality of databases 550 or web servers that hold information that the user 500 seeks. The display device 260 may transmit data in one direction to the control module 320, the control module 320 may transmit data in one direction to the display device 260, or the display device 260 and the control module ( 320 may transmit data in both directions.

The mobile unit 100 is a unit which is usually used by a person, and may be mounted inside a wireless terminal such as a mobile phone or a PDA, or may be configured as an independent device. The transmission module 130 of the mobile unit 100 and the reception module 340 of the base unit 300, and the transmission module 330 of the base unit 300 and the reception module 140 of the mobile unit 100 are mutually different. Send and receive data through various communication media. That is, the mobile unit 100 and the base unit 300 may perform data communication through an optical medium, and may transmit and receive data through an radio wave (RF) medium. It is also possible to use different media for transmission and reception. That is, the transmitting module 130 of the mobile unit transmits data to the receiving module 340 of the base unit through the optical medium s1, and on the contrary, the transmitting module 330 of the base unit propagates to the receiving module 140 of the mobile unit. Data can be transmitted via the medium s2. Furthermore, the mobile unit 100 and the base unit 300 may change the medium in the middle of communication. For example, after the transmission module 130 of the mobile unit first sends a message to the reception module 340 of the base unit via the optical medium s1, the transmission module 330 of the base unit is transmitted through the radio medium s2. Sending a response message to the receiving module 140 of the mobile unit and thereafter the communication between the mobile unit and the base unit may be made via the propagation medium (s2).

In addition, the base unit 300 may directly transmit and receive data with the connection module 110 of the mobile unit 100 using the service module 310. In this case, the communication uses a public network such as a wired or wireless Internet, a public switched telephone network (PSTN), or a wireless communication network.

Alternatively, the service module 310 of the base unit 300 transmits data to the control module 120 of the mobile unit 100 using an external access device 200 and a public network such as wired / wireless internet, PSTN, or wireless communication network. Can also be transmitted.

The base unit 300 is a unit attached to or used in conjunction with a display device such as a signboard or an electric signboard and transmits appropriate data to the mobile unit 100 in response to a request of the mobile unit 100. The information transmitted to the mobile unit is collectively called additional information related to the content. Meta-information is included in the additional content-related information, and the mobile unit uses the meta-information to make an intuitive connection.

In addition, the user 500 of the mobile unit 100 is a device other than the connection module 110 that he or she is carrying, and stores additional information related to the content provided by the base unit, in particular, meta information or data network such as the Internet by using meta information. Sometimes you want to connect to a voice network, such as a telephone. For example, if you want to find out more about the Hawaii tour guide on the street but don't have time right now, and you want to access the Hawaii tour site with your home computer in the evening, please refer to the Hawaii tourism site's URL. You can ask to send it to In this case, the user of the mobile unit may send his e-mail address already stored in the mobile unit to the base unit to request the base unit to e-mail the URL of the Hawaii tourism site. At this time, the device for accessing the web by receiving the e-mail, that is, the home PC becomes the external access device 200. Of course, since the mobile unit itself has a data storage function, a mobile unit user may store meta information such as URL information in his mobile unit and later use the mobile unit to access a URL of a Hawaii tourist site. Information can also be transferred to the following external connection devices and connected using this external connection device.

The external access device 200 is a desktop computer capable of connecting to a voice network such as a telephone or a data network such as the Internet, a mobile phone, a PDA, a hand-held PC, a notebook computer, a web TV, and a two-way pager capable of wireless internet access. All other various devices such as wired / wireless internet terminal and telephone. In general, the external access device 200 receives additional content-related information including meta information from the service module 310 of the base unit 300 or stored in the control module internal memory from the control module 120 of the mobile unit 100. Receive additional information about the content, including information.

The connection module 110 is a device that can be combined with the mobile unit 100, such as a wireless portable mobile terminal. 3 is an exemplary diagram illustrating an internal configuration of a wireless mobile terminal used as a connection module according to the present invention. In this case, the mobile terminal is used as a connection module.

Hereinafter, the configuration and operation principle of each unit will be described in detail with reference to the accompanying drawings.

2. Mobile Unit

The apparatus is generally composed of a transmitter module 130, a receiver module 140, a connection module 110, and a control module 120. In addition, it is a general configuration method to attach and configure an input / output and a display device for inputting and displaying information required for each user of the mobile unit.

A mobile unit is a device that is generally carried by an individual and is used in conjunction with a communication terminal such as a PDA or a mobile phone equipped with a wireless modem capable of communicating with the base unit and communicating with the outside such as a web connection or a voice telephone. . The mobile unit may be manufactured integrally with a communication terminal such as a PDA or a mobile phone capable of wireless internet, or may be manufactured as a separate unit separate from the communication terminal.

4 is an example in which the mobile unit is manufactured as an independent unit. And as mentioned earlier, the mobile unit does not have to be portable. 4a, the mobile unit includes a control module 120, an optical transmission module 130, an RF reception module 140, an input unit 102, a display unit 104, and an external input / output unit 106. Referring to FIG. 4B, it can be seen that the device includes function keys such as a selection key such as meta information, a cancel key, and a search key.

The control module 120 is in charge of controlling the entire mobile unit 100. The control module is typically easy to configure using a microcontroller with CPU, memory and I / O functions. In addition, external memory such as EEPROM and FLASH memory can be added if necessary. Since this technique is already well known, a detailed description thereof will be omitted. The control module 120 basically stores data unique to the device, and in some cases, may store data received from the outside. The data received from the outside may be user input data, data received from an external device, or content-related additional information including meta information received from the base unit 300.

The control module 120 also serves to process these data according to the purpose. The processed data is transmitted to the transmission module 130 and the connection module 110 according to a user's selection condition, and transmitted to the external connection device 200 through the output device of the control module 120. In addition, the control module 120 controls the data flow between the modules 110, 120, 130, 140.

The transmitting module 130 and the receiving module 140 are modules for communicating with the base unit 300. The transmitting module 130 is a module that transmits data stored in the memory of the control module 120 and other appropriate data to the receiving module 340 of the base unit 300 through the selected medium.

The reception module 140 is a module that receives data transmitted by the transmission module 330 of the base unit 300 and transmits the data to the control module 120.

The connection module 110 is a module for connecting to the outside using the information received from the base unit 300. The connection module 110 is different from the external connection device 200 in that it is connected to the outside, but is distinguished from the external connection device 200 in that it forms one body with the mobile unit. In general, the connection module 110 has a function of a telephone, a wireless modem, etc., so that the connection module 110 may be connected to a voice network such as a telephone and / or a data network such as the Internet. The access module 110 obtains the desired information from the service module 310 of the base unit 300 through the Internet or the public network, or directly connects to a web site corresponding to the meta information provided by the base unit 300 and the like. Can be obtained.

In the mobile unit 100, the transmission module 130 and the control module 120 are essential, but other modules are optional modules. Therefore, some modules constituting the mobile unit can be omitted. In general, look at the possible configurations

First, when all of the transmission module 130, the control module 120, the connection module 110, the receiving module 140,

Secondly, when the transmission module 130, the control module 120, and the connection module 110,

Third, when composed of the transmission module 130, the control module 120, the receiving module 140,

Fourth, there are cases where only the transmission module 130 and the control module 120 exist.

Now, the method of inputting data by the user 500 will be described. As a method for the user 500 to input data to the control module 120 of the mobile unit 100, an input / output device such as a display device and a keypad may be added to the mobile unit 100. An example is the input unit 102, the display unit 104, and the external input / output unit 106 of FIG. 4.

In addition, the mobile unit 100 may input and output data from and to the PC using a communication method such as IrDA (Infrared Data Association), which is a wireless interface using a personal PC and a cable, wireless, and infrared.

3. Base unit

The device is generally composed of a transmitting module 330, a receiving module 340, a control module 320, a service module 310, the base unit is attached to the input and output device of the base unit specific data required and a screen for showing the same Instead, it can be connected to a computer to use the computer's keyboard and monitor, and can also be used with a remote control or the Internet or a wireless communication network.

In general, the base unit is used in conjunction with the display device, and the control module 320 first stores additional content-related information, including meta information about content currently being displayed or broadcast, in the internal memory of the control module. When the mobile unit designates desired data such as meta information of the base unit and transmits the received data to the receiving module 340, the requirement is transmitted to the control module 320 and the control module accordingly transmits the mobile unit through the transmitting module 330. Send additional information related to the appropriate content such as meta information. As such, the control module 320 controls communication between the base unit and the mobile unit, and is also responsible for communication with the display device used in conjunction with each other, and controls input / output of its own data to input and output necessary data of the base unit. It functions to analyze, process, process and store.

The reception module 340 is a module for receiving data transmitted from the transmission module 130 of the mobile unit 100, and the transmission module 330 is a module for transmitting data to the mobile unit 100. In general, the information transmitted from the base unit 300 to the mobile unit 100 is collectively called "content-related additional information." Content-related additional information may be obtained by URL, mobile IP (Internet Protocol), IPv6, telephone number, or the like. It is divided into " meta information ", which collectively refers to indirect information, and " descriptive information ", which is a general term of information transmitted from the base unit to the mobile unit. Descriptive information itself has information about content, and in some cases, mobile unit users may obtain desired information with this descriptive information. In this case, the mobile unit user does not need to use meta information.

On the other hand, there is an optical medium of LED light and laser light in the transmit / receive module. The transmit / receive module is not only changed by “laser light” and “LED light”, but the protocol used even when using the same “LED light” ( For example, the transmit / receive module may vary depending on the IrDA protocol). Of course, other protocols are possible. As such, the present invention may use any of the above-described protocols.

And the same "LED light", but the transmission and reception module may vary depending on the protocol. The same applies to "laser light" and near field communication.

Although the protocol of "Bluetooth" is already defined in the short range wireless communication, the short range wireless communication of other protocol is also applicable to the present invention. In this way, the transmission / reception module may change according to the change of protocol. The transmission / reception module may not only vary depending on the protocol, but may also vary according to characteristics of the medium such as the wavelength of the medium to be used. In other words, the transmission / reception module may vary depending on the type of medium, the wavelength of the medium, and the protocol used for communication even in the same medium.

The service module 310 bypasses the data without transmitting the data to the reception module 140 of the mobile unit 100-for example, by telephone, voice over IP (VoIP), short message system (SMS), wired / wireless internet, Using a single / two-way pager, e-mail, Unified Message System (UMS), portal site, etc.-to the access module 110 or external access device 200 of the mobile unit 100. Module to transmit. In some cases, the service module may access the outside 550 through the public network to bring necessary information to the base unit 300. That is, communication with the outside through the public network is not only unidirectional but also bidirectional.

At this time, the information that the service module brings from the outside 550 through the Internet connection is also included in the 'content related information'. In more detail, this information becomes 'descriptive information'. In the present invention, 'descriptive information' refers to information excluding meta information among the information exchanged between the mobile unit and the transmission and reception module.

The configuration of the base unit may include all of the above modules and may be omitted as necessary. In general, the receiving module 340 and the control module 320 is essential in the base unit 300, but other modules are optional.

First, if all of the transmission module 330, the receiving module 340, the control module 320 and the service module 310,

Second, when composed of the transmission module 330, the receiving module 340 and the control module 320,

Third, there is a case where the receiving module 340, the control module 320 and the service module 310.

4. External connection device

The external connection device 200 is not an indispensable device that is indispensable in the present invention, but as mentioned above, the user 500 of the mobile unit 100 may use various devices other than the connection module 110 that he or she is carrying. A generic term for all devices that can be connected to a data network such as the Internet or a data network such as the Internet. It includes a variety of equipment such as mobile phones, PDAs, hand-held PCs, notebook computers, desktop computers, pagers, and wired / wireless Internet terminals. The device 200 receives additional content-related information from the mobile unit 100 or the service module 310, and has a function of accessing a voice network such as a telephone or a data network such as the Internet by using meta information. Other mobile units with connection modules can also be seen as external connections.

5. Transmission medium

In the present invention, a transmission medium used for communication between the mobile unit 100 and the base unit 300 generally uses an optical medium and a radio wave medium.

The optical medium is a generic term for LED light or laser light generated from light emitting diodes (LEDs), and various short-range wireless networks, cellular phones, and PCSs that generally use radio frequency (RF) radio waves. Phone, short / two-way pager (pager), short message (SMS), Bluetooth (Bluetooth) and the like, in the present invention, the proximity sensor used in the smart card is also included in the radio medium because it uses radio waves. In the present invention, the LED light is a generic term for the light generated from the light emitting diode, and the wavelength range is varied to include the visible light region or the infrared region. Commonly used LED light is an infrared LED (IrLED), but the LED light of the present invention is not limited thereto. The laser light also varies depending on the source of the laser and the present invention generally uses laser light of an infrared wavelength, but this is not limited to any particular laser light.

In addition, even when using the same wavelength of LED light, the light emitting device itself may need to be changed according to the communication speed or protocol. For the same reason, different light emitting / receiving devices should be used depending on the wavelength, speed and protocol requirements of the laser light. In the present invention, the optical medium generically refers to all the LED light or laser light emitting / receiving using these various wavelengths or elements, and the optical transmission module and the optical reception module should also be understood in this sense.

Since the principle of the optical transmission / reception technique used in the present invention is already well known to those skilled in the art, a detailed description thereof will be omitted.

Radio waves generally use radio frequency bands, but the use of radio waves in microwave or millimeter wave ranges does not depart from the spirit or implementation of the present invention, and this is also included within the scope of radio wave media of the present invention. .

However, in the present invention, for the convenience of expression, all radio wave media are collectively referred to as an RF medium, and the radio wave transmission module is referred to as an RF transmission module and the radio wave reception module is referred to as an RF reception module.

The biggest feature of optical media is the straightness of light. This is the medium most suited to the Shoot and Connect method, which is one of the important modes of use of the present invention, in that the user can selectively aim and selectively communicate with the target. In addition, the use of frequencies, such as radio media, is not a permit.

In contrast, radio media are generally directional, making it easy to broadcast to multiple units, and easy to use if aiming at a target is difficult or undesirable.

Proximity sensor, however, has the characteristics that it works like optical media in that it has to select a target and get close to the radio medium, and the radio wave medium using ultra-high frequency can take advantage of the straightness if properly configured.

The radio wave medium of the above-described transmission mediums can be divided into two types. One is a radio wave medium related to short-range wireless communication (direct communication without passing through the service module of the base unit) between the transmit / receive module of the mobile unit and the transmit / receive module of the base unit. It is a short-range RF medium that refers to short-range RF communication radio wave media such as random access RF communication, Bluetooth, HomeRF, and proximity sensor.

The other is a radio medium for the public network used by the service module of the base unit to communicate with the outside, such as SMS, one / two way pager, Code Division Mulitple Access (CDMA), GSM Radio waves for public network wireless communication, such as Global System for Mobile communications (TDMA) and Time Division Multiple Access (TDMA), are examples of this.

The two radio media are not classified by frequency but by function and output. That is, when the service module of the base unit communicates using the radio medium, the communication is performed using the public network, and the base unit's transmit / receive module communicates directly with the transmit / receive module of the mobile unit using the radio medium. In this case, communication is performed using a short range wireless communication radio wave medium, not a public network.

Therefore, in the following case, the radio wave medium refers to radio waves for various public networks, and the radio wave medium for short-range wireless communication is referred to in connection with direct communication between the mobile unit and the base unit. It should be interpreted as meaning.

When referred to as an RF reception and RF transmission module, it is common for other devices to be actually used depending on the frequency band or the communication protocol. However, since such communication technology is well known to those skilled in the art, the present invention does not specifically designate specific frequency bands, outputs, and communication protocols in detail, and collectively call them RF reception and RF transmission modules.

6.Operation

Looking at the operation of the independent units of the present invention of the above configuration is as shown in Figures 5a-5e. It is apparent that other operation processes may be variously configured by combining or repeating the processes of FIGS. 5A to 5E.

5A illustrates a process in which the mobile unit 100 and the base unit 300 exchange data through short-range communication. The operation process is as follows.

The data is transmitted to the transmission module 130 of the mobile unit 100 using the internal bus from the control module 120 of the mobile unit 100 by the transmission command of the user 500 (S1).

When the transmission module 130 of the mobile unit 100 loads the data on the medium 1 to the base unit 300, the reception module 340 of the base unit 300 receives the data (S2). Medium 1 includes an optical medium or a propagation medium.

The data received by the receiving module 340 of the base unit 300 sends the data to the control module 320 of the base unit 300 through an internal bus (S11).

The control module 320 of the base unit 300 analyzes the data, generates appropriate data to be transmitted to the mobile unit 100, and sends the data to the transmission module 330 of the base unit 300 through an internal bus (S12). .

The transmission module 330 of the base unit 300 loads data to be transmitted to the mobile unit 100 on the medium 2 and transmits the data to the reception module 140 of the mobile unit 100 (S14). Medium 2 includes an optical medium or a propagation medium.

The receiving module 140 of the mobile unit 100 transmits the received data to the control module 120 of the mobile unit 100 through the internal bus (S3).

The control module 120 of the mobile unit 100 analyzes the received data and repeats the process of exchanging data with the base unit 300 by short-range communication if necessary (S1, S2, S11, S12, S14, S3). (S21).

If it is determined that it is unnecessary as a result of the analysis or after the completion of the execution of S21, the control module 120 of the mobile unit 100 analyzes the data received from the base unit 300 by the mobile unit 100 and the connection module 110 or the external connection device. Send to 200 (S4). In this case, the internal bus is used to transmit the data to the connection module 110, and when the data is transmitted to the external access device 200 (not shown in FIG. 5A), a cable such as RS232C, USB, IEEE1394, or IrDA is connected. Send by near field communication, including Bluetooth.

The connection module 110 or the external connection device 200 is used to connect to the voice and / or data network (S6).

5B illustrates a process in which the mobile unit 100 transmits data to the base unit 300 through short-range communication and the base unit 300 sends data to the connection module 110 of the mobile unit 100 through the service module 310. It is shown. The operation process is as follows.

The data is transmitted to the transmission module 130 of the mobile unit 100 using the internal bus from the control module 120 of the mobile unit 100 by the transmission command of the user 500 (S1).

When the transmission module 130 of the mobile unit 100 loads the data on the medium 1 to the base unit 300, the reception module 340 of the base unit 300 receives the data (S2). Medium 1 includes an optical medium or a propagation medium.

The data received by the receiving module 340 of the base unit 300 sends the data to the control module 320 of the base unit 300 through an internal bus (S11).

The control module 320 of the base unit 300 analyzes the data, generates appropriate data to be transmitted to the mobile unit 100, and sends the data to the service module 310 of the base unit 300 through an internal bus or other communication network. (S13).

The service module 310 of the base unit 300 sends the data to the connection module 110 of the mobile unit 100 through the public network (S15).

The connection module 110 sends the data to the control module 120 of the mobile unit 100 through an internal bus (S7).

If necessary, the mobile unit 100 repeats the process (S1, S2, S11, S13, S15, S7) of sending data through short-range communication and receiving data through the service module 310 of the base unit 300 (S22). .

After the completion of the step S22, if you want to connect to the voice and / or data network to send the data from the control module 120 of the mobile unit 100 to the connection module 110 or external connection device 200 of the mobile unit 100 ( S4).

The connection module 110 or the external connection device 200 is used to connect to the voice and / or data network (S6).

In FIG. 5C, after the mobile unit 100 and the base unit 300 exchange data through short-range communication, the connection module 110 of the mobile unit 100 and the service module 310 of the base unit 300 connect to the public network. It shows sending and receiving data through. In this case, the connection module 110 starts communication with the service module 310.

The operation process is as follows.

The process of transmitting and receiving data through short-range communication between the mobile unit 100 and the base unit 300 is the same as the step 7 (S1, S2, S11, S12, S14, S3, S21) in step 1 of FIG.

After completing the above steps, the control module 120 of the mobile unit 100 sends data to the connection module 110 or the external connection device 200 of the mobile unit 100 (S4).

Using the connection module 110 or the external connection device 200 of the mobile unit 100 transmits the voice and / or data to the service module 310 of the base unit 300 through the public network (S5).

The service module 310 of the base unit 300 analyzes the data and generates data to be sent to the mobile unit 100 and then transmits voice and / or data to the connection module 110 of the mobile unit 100 through the public network. Transmit (S15).

If necessary, the steps S5 and S15 are repeated (S23).

Using the connection module 110 or the external connection device 200 of the mobile unit 100 is connected to the voice and / or data network (S6).

FIG. 6 is a diagram illustrating a system for connecting to a voice network and a data network to which the data flow of FIG. 5C is applied. That is, the control module 120 is included in the connection module 110. That is, since the connection module 110 and the mobile unit 100 are integrated, the microprocessor in the connection module 110 may serve as the control module 120 of the mobile unit 100. Alternatively, as described above, according to the configuration of FIG. 2, a separate control module 120 may be provided.

5D illustrates that after the mobile unit 100 sends data to the base unit 300 through short-range communication, the service module 310 of the base unit 300 and the connection module 110 of the mobile unit 100 are connected through the public network. It shows the process of sending and receiving data. In this case, the service module 310 starts communication with the access module 110. The operation process is as follows.

After the mobile unit 100 sends data to the base unit 300 through short-range communication, the process of sending data to the connection module 110 of the mobile unit 100 by the service module 310 of the base unit 300 is illustrated in FIG. Same as steps S1, S2, S11, S13, S15 in 5b.

After transmitting and receiving data from the connection module 110 of the mobile unit 100 to the service module 310 of the base unit 300 through the public network, the voice and / or via the connection module 110 or the external connection device 200. Processes of connecting the data network (S5, S15, S23, S6) are the same as in Figure 5c.

5E illustrates that after the mobile unit 100 transmits data to the base unit 300 through short-range communication, the base unit 300 provides the data of the base unit 300 with the data desired by the user 500 of the mobile unit 100. The module 310 shows a process of pulling it through an external network (LAN, Internet, etc.) and delivering it to the mobile unit 100 through short-range communication.

The mobile unit 100 transmits data to the base unit 300 using short-range communication as in FIG. 5A (S1, S2, and S3).

The control module 320 of the base unit 300 analyzes the data and instructs the service module 310 to bring the information desired by the user of the mobile unit 100 through the external network (S14).

The service module 310 obtains the information through the voice and / or data network (S16, S17). The information is sent from the service module 310 to the control module 320 of the base unit 300 through the internal bus (S18).

The process of sending the information from the base unit 300 to the mobile unit 100 using near field communication is the same as the steps S12, S14, and S3 of FIG. 5A.

If necessary, the steps S1, S2, S11, S14, S16, S17, S18, S12, S14, and S3 are repeated (S24).

After the completion of the step S24, the method of connecting the mobile unit 100 to the voice and / or data network using the connection module 110 or the external connection device 200 is the same as that of the steps S4 and S6 of FIG. 5A. .

It is apparent that the spirit of FIG. 5E can be modified and applied to FIGS. 5A to 5D.

Methods in which the mobile unit 100 and the base unit 300 interoperate may be variously modified in accordance with the spirit of the present invention in addition to the methods described above. It is obvious that the results obtained by appropriately combining the above-described methods may be an operation method suitable for the purpose of the present invention.

7. ID

7.1 Types of IDs

The present invention requires the use of various IDs in order to avoid communication confusion and for the convenience of the user when an unspecified number of devices are used. In addition, various IDs are used for security such as access control. These IDs will now be described in detail.

The apparatus of the present invention is composed of several components, which components exchange data with each other. In this process, the ID of each component is required for tracking the data transmission process or for access control of information. The IDs used herein may be broadly divided into a user 500 side ID and a base unit 300 side ID.

(1) user-side IDs

As the user side ID, the mobile unit device ID, the mobile unit alias, the ID associated with the mobile unit 100, the connection module 110, the ID associated with the connection module 110, and the external connection, the ID associated with the external connection device 200, may be used. The device Device ID, the external access device alias, the external access device access ID, and an ID associated with the user 500 include a personal ID.

(2) Base unit side IDs

Base unit 300 side IDs include a base unit device ID and a base unit alias.

7.2 ID Features

First, the user IDs will be described. As described above, the IDs of the user 500 may include four IDs associated with the mobile unit 100, an ID associated with the connection module 110, an ID associated with the external access device 200, and an ID associated with the user 500. There is. The four IDs are explained in sequence as follows.

First, two IDs related to a mobile unit will be described. Among the two IDs associated with the mobile unit 100, the Mobile Unit Device ID is an ID that cannot be changed and has a different ID for each mobile unit 100. This ID is a device-specific value given when the unit is created and can be used to physically distinguish it from other mobile units 100. When generating this ID, there is a unique way to ensure that no number or string of characters is an ID. In other words, there is a unique characteristic of ID itself so that it can be distinguished from ID or not. Therefore, this ID can simply be called the serial number of the hardware.

Mobile Unit Alias, which is another ID related to the mobile unit 100, is an ID assigned by the user 500 of the mobile unit 100 and is an ID that can be changed. Since Device ID is not human friendly, Alias makes it easy to distinguish it from other mobile units 100. Of course, this ID may not be unique for each mobile unit 100. It can be considered simply the name of the mobile unit 100.

Second, the connection ID of the connection module 110 will be described. When the connection module 110 is included in the mobile unit 100, the connection ID of the connection module 110 is required as well as the ID of the mobile unit 100 itself. This connection ID can be either a phone number or Internet Protocol version 6 (IPv6). This means a unique connection ID (address), and the service module 310 of the base unit 300 may transmit data to the connection module 110 using this.

Third, IDs related to the external access device 200 will be described. Similarly to assigning a unique Mobile Unit Device ID to each mobile unit 100, a unique external access device Device ID is also assigned to each external access device 200. Through this ID, it is possible to physically distinguish the external access devices 200. Of course, this ID cannot be changed.

Like the mobile unit 100, the external connection device 200 is given an alias so that a person can easily recognize it. Of course, the user 500 can change the alias.

In order for the base unit 300 to send information to the external access device 200, a unique access ID (address) such as a phone number or an IPv6 (Internet Protocol version 6) of the external access device 200 capable of transmitting a message is required. do. This address is referred to as a connection ID of the external access device 200. Through this ID, the base unit 300 knows where to send the message. This is for the external connection device connection ID. That is, the same role as the connection ID of the connection module 110. According to the type of the external access device 200, the external access device access ID may be an e-mail address, a Unified Messaging ID (UMS ID), a personal ID of the portal site, or the like. In the case of an e-mail address or a UMS ID, the base unit 300 transmits information through e-mail and UMS, and in the case of a personal ID of a portal site, the base unit 300 of the user (ID owner) 500 The information is written to a special database.

Fourth, IDs associated with the user 500 will be described. An ID associated with the user 500 is a personal ID. This personal ID is used to distinguish the person using the mobile unit 100 or the external connection device 200. User 500 can be given arbitrarily, the user 500 can be changed. It may include information related to the user 500. Since this ID is operable, this alone is incomplete in distinguishing the user 500. It is used only for convenience to the user 500 or for causing the base unit 300 to transmit different data according to the user 500. That is, the base unit 300 looks at the personal ID of the user 500, and in some cases, transmits different data according to the information related to the user 500.

The personal ID is an ID that can be used to represent not only information related to a mobile unit user but also information related to an owner or an administrator of the base unit.

So far, user side IDs have been described. Now, the base unit side IDs will be described. As described above, the base unit 300 side IDs are used to distinguish the base unit 300, and include a base unit device ID and a base unit alias. The base unit device ID may not be changed to a unique value of the base unit 300. As in the case of the mobile unit 100 or the external connection device 200, it is used for physical distinction from other devices. Base Unit Alias, on the other hand, is used by users 500 to easily distinguish base units 300. Of course, this alias can be changed.

In the above, Device IDs, for example, Mobile Unit Device ID, External Device ID, and Base Unit Device ID are not changeable, and each device has a unique value, so the purpose is to physically distinguish them. Alias (Mobile Unit Alias, External Access Device Alias, Base Unit Alias) are intended to be changeable and easy for humans to distinguish. Device IDs have unique values for different devices, but aliases do not necessarily have unique values for each device.

In the case of Device ID, like a Mobile Unit Device ID assignment method, a special method is used so that no number or string becomes a valid ID. In addition, each Device ID is a device that is characterized by each device so that it can know what kind of device (Mobile Unit Device ID, External Device ID, or Base Unit Device ID) by looking at the ID. You can also create an ID. For example:

MU1213145: This is an example of a Mobile Unit Device ID.

BU4231123: This is an example of a Base Unit Device ID.

CU8763121: This is an example of an external device device ID.

In the above example, MU means mobile unit 100, BU means base unit 300, and CU means external connection device 200. However, in many cases, the device ID cannot be assigned to the external access device. In this case, the device ID of the external access device is not normally used.

In addition to the above-described IDs, other types of IDs may be used as needed, and the characteristics of the IDs at that time may be defined as needed. In addition, not all of the above IDs are necessary, and some or all IDs may not be used in some cases. Other IDs may be added or the above IDs may be removed in terms of data transfer, access control, ease of use, and the like. The contents of the IDs may be modified in various ways without changing the spirit of the present invention.

8. Data Type

In the present invention, communication is made between several independent units. In such communication, various units exchange data with each other, and thus various types of data formats are required. In the following description, a common and basic format of various data used in the present invention will be described, and specific formats of each data will be described in detail in each case.

One embodiment of a data format of data used in the present invention is shown in FIG. One thing to note here is that the basic data formats to be described below are merely examples for easily explaining the present invention, and in addition, the data formats can be configured in various ways.

The data 700 is composed of three parts, a header 710, a body 720, and a tail 730. Each of these will now be described in more detail.

1.header

The header 710 is composed of a header 711, a plurality of IDs 712 and 713, and an error correction code 714. The contents of the basic header are thus configured, but other elements may be added to each specific data or some or all of the above contents may not be used. As will be described below, when there are various types of mobile units and these units use different types of transmission media and transmission schemes, information indicating such transmission media and transmission schemes may come here.

The header 711 of the components of the header consists of a unique code 715, a type 716 of data format, and a version 717 of data format. In addition, according to the design, the header 711 may include information such as an encoding scheme. As for the encoding scheme of the header 710, it is preferable to predetermine one format (for example, Unicode format) in advance and to encode according to the scheme. Depending on the circumstances to which the present invention is applied, some or all of the contents of the above-listed heading may not be used within the scope sufficient to serve as data.

The plurality of IDs 712 and 713, which are other components of the header, record information about the mobile unit ID, the external connection unit ID, and the base unit ID. Some of these IDs may or may not be used depending on the situation in which the present invention is actually applied, and other IDs may be added. In addition, information related to a transmission medium and a transmission method may be added to the IDs.

The ECC 714 includes information for confirming the transmission state. That is, the ECC 714 is used as a code for error detection and error correction of the header 710. Since this code is a code for stable data transmission, it can be omitted when it is guaranteed to transmit stable data or when such a problem can be ignored.

In the following, each part of the header will be described in more detail. At the beginning of the header 711, a different unique discrimination code 715 is used for each data type. This determination code 715 indicates the beginning of the data and may be used as one criterion to determine whether the data is valid. One thing to note is that different data types may be used for each data type, but the same code may be used for all data types used in the present invention. In such a case, it only serves to distinguish the data from the present invention from the data used in other types of communication, and does not distinguish between the different types of data used in the present invention. In addition, this unique code does not necessarily need to be used and may not be used in some cases in consideration of the situation to which the present invention is applied.

Next, the format type 716 and the version 717 of the data enter to distinguish the structure of the data. In addition, a value indicating the encoding scheme of the content in the body 720 comes.

The IDs entered in the header 710 serve to inform the device from which the message is sent and the devices receiving the message. These IDs are used in conjunction with indicators that direct the direction of the message, indicating where the message originated and where it is going.

The devices may not communicate only by one predetermined communication method / medium. For example, it may be possible to communicate by changing the communication medium during communication (communication between the mobile unit and the base unit may first be made of optical media, and then the communication medium may be turned into radio media), and various types of mobile units may be used. (Such as only an optical receiving module or only a radio receiving module) may attempt to communicate with the base unit. In this situation, in order to communicate smoothly, it is necessary to know what kind of communication method the other device prefers or what type of device. Of course, such a need is unnecessary if it is guaranteed to communicate only in one predetermined way. When it is necessary to know the characteristics of the communication medium used by the other device, the modulation / demodulation method, the protocol, the type of the device, etc. Whether it is optical or radio media, which media is used, which media is used, etc.), modulation / demodulation method, protocol, type of device (device with RF reception module or optical reception) Etc.), so that the receiving device knows how to communicate. The content and order of the data in the header can be changed according to the definition and can be variously implemented. It is obvious to those skilled in the art.

2. Body

Body 720 includes content 722 including the message content and ECC 724. The content 722 contains a message that needs to be exchanged. The details of the message may vary from case to case, and there may be no message at all. The content 722 in this case is called an empty message. Messages that enter the body can also be expressed using Markup Language, such as HTML and XML. New markup languages for the present invention may be defined and used.

The ECC 724 entering the body 720 serves the same purpose as the ECC 714 in the header 710. The ECC here may be omitted in some cases, similarly to the ECC of the header.

3. Tail

Tail 730 includes footer 732 and ECC 734. The footer 732 informs the end of the data, and the role of the ECC 734 is the same as that of the header 710 or the body 720, and as in the case of the header or the ECC of the body, depending on the situation Can be omitted.

This tail serves as a reminder that the end of the data. If the end of the data is known without a separate tail, a tail portion may not be particularly needed.

In the present embodiment, the ECC is installed in the header 710, the body 720 and the tail 730, respectively, but it is obvious to those skilled in the art that only one ECC can be installed as a whole depending on the designer. Hereinafter, the spirit and operating principle of the present invention will be described in detail with reference to specific embodiments of the present invention.

II. Example

In the present invention, an embodiment will be described in terms of mobile units and base units.

1. Embodiment of a mobile unit

<Example 1-1>

This embodiment relates to the case where the mobile unit 100 uses the optical transmission module and the optical reception module. In this embodiment, LED light or laser light is used as the optical medium. That is, in this embodiment, the medium in which the transmission module 330 of the base unit 300 and the reception module 140 of the mobile unit 100 communicate is light (LED light or laser light), and the transmission of the mobile unit 100 is performed. The medium through which the module 130 and the receiving module 340 of the base unit 300 communicate is also light (LED light or laser light). The optical medium used by the transmission module of the mobile unit and the reception module of the base unit does not necessarily have to match the optical medium used by the reception module of the mobile unit and the transmission module of the base unit, and different optical media may be used. . In addition, the transmission module of the mobile unit may use only one optical medium or both optical media. The same applies to the reception module of the mobile unit and the transmission / reception module of the base unit.

As shown in FIG. 9, the mobile unit 100 according to the present embodiment provides information provided by the information provider through a display device connected to the outside of the base unit, and holds additional information including meta information. A mobile unit communicating with a base unit via light, the optical transmitting module 130 for transmitting optical data to the optical receiving module of the base unit, and the optical unit for receiving optical data transmitted by the optical transmitting module of the base unit. And a receiving module 140 and a control module 120 for controlling the optical transmitting module and the optical receiving module.

The mobile unit may include an input unit 102 for inputting a predetermined command or data, a memory 108 for storing contents received by the optical receiving module, and contents input by the user, and received by the optical receiving module. The display unit 104 for outputting the contents, the contents input to the input unit, and the stored contents, and the mobile unit 100 may further include a connection module 110. At this time, the connection module is made integral with the mobile unit. The mobile unit exchanges data with the service module of the base unit through the connection module through the Internet or the public network.

At this time, the optical transmission module transmits and receives data using LED light or laser light, and the control module may be connected to the external connection device 200 by connecting the external input / output unit 106 to the outside of the mobile unit.

The external I / O unit connected to the mobile unit communicates with the external access device 200 through a short range wireless communication protocol including RS232C, IrDA, USB, IEEE1394, and Bluetooth. However, when the external connection device accepts the communication method of the mobile unit and the base unit, the mobile unit communicates with the external connection device through the optical transmission module and the optical reception module.

The mobile unit has a function of searching for data stored in the storage unit, selecting the searched data, canceling the selected data, transmitting the selected data to the outside, and deleting the selected data. It is preferable.

Accordingly, the mobile unit may store the received meta information in a memory and transmit data to a desired access module or external access device to access a voice or data network if necessary.

The input unit 102 may include at least one of a keypad, a keyboard, a touch screen, a handwriting recognition window having a pointing pen, and an input means including a voice recognizer.

Meanwhile, the control module 120 of the mobile unit 100 includes a microcontroller for controlling the mobile unit and a memory and an I / O unit for storing data input to the control module (memory and I / O). The part may be embedded inside the microcontroller).

As illustrated in FIG. 10, the optical transmitter module 130 encodes a signal input through the input unit 102 and performs an error detection and correction function. And a driver 133 for emitting light to send the modulated signal to the optical receiving module of the base unit.

The encoder 131 performs error detection and correction coding to reduce an error rate that may occur during transmission. Various methods are currently known as error detection and correction methods, and any method may be used.

Data output through the encoder 131 is modulated by the modulator 132, and in the analog transmission method, amplitude modulation, frequency modulation, and phase modulation can be used in analog transmission, similar to a general radio modulation method. In digital transmission, ASK (Amplitude Shift Keying), FSK (Frequency Shift Keying), and PSK (Phase Shift Keying) methods may be used.

Generation and transmission of LED light and laser light in the design of the transmission module 130 has already been done a lot of research and development has been made in the present invention using the existing technology in consideration of the following points are designed and manufactured.

As the optical medium, the LED light has a short reach, but has a wide range of application and is convenient to implement and can be manufactured at low cost.

Laser light, on the other hand, has a very strong directivity and straightness, which makes it easy to communicate with a base unit over a long distance, thus allowing accurate aiming.

In addition, in order to take full advantage of the LED light and the laser light, LED light and laser light may be used simultaneously. In this case, the receiver of the base unit should be designed to detect LED light and laser light at the same time.

The use of LED light does not harm the human body, but laser light can directly or indirectly damage people. In particular, the eyes of the body are sensitive to light, which can adversely affect vision. Therefore, each country has established safety standards for lasers, which have divided the lasers into several classes and suggested management standards. Information on this can be obtained from the ANSI Z136 "Standards for the safe use of lasers" published in 1980 by the American National Standards Institute.

The laser light used in the present invention is preferably designed with reference to the above laser safety standards. In addition, since the present invention uses a laser, it is preferable to practice the present invention with reference to conditions known to not generally harm the human body, especially vision, since it is free space laser communication. In general, it is known that laser light having a long wavelength does not cause damage to the inside of the eye. Therefore, it is preferable to use a laser light having such a wavelength in the present invention. If possible, the laser's output should be lowered so that it does not emit more brightness than necessary.

Even if a laser beam of moderate wavelength and low power is used, the following method may be used in consideration of the case where the eyes are exposed to the laser beam for a long time. That is, when the user 500 issues a kind of firing command (for example, pressing a firing button on the mobile unit) to the mobile unit 100, the laser beam is emitted for a very short time so that the user keeps pressing the firing button. Allow a certain amount of time for the next shot to protect the eyes by preventing the beam from continuously exiting.

As shown in FIG. 11, the optical receiving module 140 includes an optical detector 141 for detecting optical data transmitted by the optical transmission module of the base unit, and an amplifier for amplifying a signal detected and attenuated by the optical detector. And a demodulator 143 and a decoder 144 for demodulating and decoding the amplified signal to restore original data.

The mobile unit 100 may request the service module 310 of the base unit 300 to transmit detailed information including the meta information to the external access device 200 designated by the mobile unit 100. The media used by the service module to transmit information to an external access device at the request of the mobile unit are various, such as PSTN, SMS, wired / wireless internet, wireless communication network including pager, public network including CDMA, GSM, and TDMA.

On the other hand, communication between a mobile unit and an external connection device is not necessarily made through another device (cable connection or the like). That is, when the external connection device has an optical transmission / reception module, it should be understood that communication is performed through the optical transmission / reception module of the mobile unit.

The user 500 of the mobile unit 100 should input data to be sent to the base unit 300. The input method is as follows.

First, when a self input / output device in the mobile unit 100 is attached, input is made using an interface suitable for the device. In this self input / output method, the user 500 inputs data by pressing a keypad, a keyboard, or a touch screen, writes a character using a pointing pen on a handwriting recognition window, or the user 500 uses a voice recognizer to input voice data. The input method is used. In this case, the user 500 may check the input contents through the display window when the data is input.

The second method is to input data using an external device such as a PC. To this end, first, the external device and the mobile unit 100 need to be connected to transmit the input data. A method of connecting the external device and the mobile unit 100 includes connecting the mobile unit 100 to an external device in the form of a cartridge. Or cable with an external device via an interface such as a port of the mobile unit 100, for example, RS-232C, universal serial bus (USB), or IEEE1394, or an infrared port, a local area network, or a Bluetooth (Bluetooth). ) To connect wirelessly without cables.

On the other hand, when the user 500 wants to obtain more detailed information, the user 500 may access another place using meta information. That is, using the connection module 110 mounted on the mobile unit 100 can be connected to the Internet, make a phone call or receive a text service. When the connection module 110 is not mounted on the mobile unit 100, the connection module 110 may be connected through the external connection device 200. In the case of using the external connection device 200, the meta information should be transmitted to the external connection device 200. The transmission method is a wired / wireless method, that is, a serial cable connection, a parallel cable connection, USB, IEEE1394, LED light, laser light. , RF, Bluetooth, etc.

When the connection module 110 is attached to the mobile unit 100, the user 500 may search the meta information stored in the memory using a display window and connect to a designated place (URL, phone number, Mobile IP, IPv6, etc.). . The connection method depends on the type of the connection module 110. For example, when the connection module 110 of the mobile unit 100 has a function of a wireless modem, the site can be connected to the Internet using a URL, or various Internet push services (WAP (wireless application) protocol) Push, Mobile Explorer Push, etc.). When the telephone function is provided, voice information may be obtained by dialing directly using a telephone number, or voice information may be obtained by receiving a call from the base unit 300 or from a call center. You can also get text services such as SMS (Short Message Service). You can also get text services using Pager.

When connecting using an external access device, it does not matter anything that can make a telephone or Internet connection. Examples of the external access device include a mobile computer, a PDA (Personal Digital Assistants), an HPC (Hand-held PC), a phone, a notebook computer, and the like, which are equipped with a modem or have a LAN connection. And home appliances that can be connected to the Internet, such as a Web TV, a digital TV, a game machine with Internet access, and a refrigerator with internet access. The external access device 200 may receive and store data from the mobile unit 100, and display the received data to the user 500. You can also access the Internet using the data you receive.

Now, the SMS (Short Message Service) used in the present embodiment will be described. A processing flow diagram of the SMS service module according to the present invention is shown in FIG.

When attempting to connect to a URL, Mobile IP, IPv6, phone number, etc., press the 'Select' button without looking at the URL, Mobile IP, IPv6 or phone number displayed on the display panel of the mobile unit 100 Press to select and connect directly with a single tap of the 'Connect' button (or other one-touch connections).

Now look at the data sent from the mobile unit 100 to the base unit 300. The mobile unit 100 transmits a request to the base unit 300 to send information to the external connection device 200, the connection module 110, or the reception module 140. Therefore, the data sent from the mobile unit 100 to the base unit 300 must contain information for carrying out this request. Of course, even if there is no specific information according to the situation to which the present invention is applied, this request may be well performed. Therefore, it is not necessary to follow the following data format in all cases to which the invention is applied. In addition, some of the following information may be omitted.

The overall structure of the data is consistent with the basic data types described earlier. Therefore, in this case, it is sufficient to specify only the IDs 712 and 713 and the body 720 included in the header 710.

The IDs included in the header are IDs (Device IDs, Alias) of the mobile unit 100, connection IDs of the connection module 110, personal IDs, IDs (Device IDs, Alias) of the external connection device 200, external connections. Connection ID of the device 200, and the like. Some or all of the above-described IDs may not be necessary depending on the situation to which the present invention is applied, and other IDs other than the above-described IDs may be used. These IDs can be used together with the device type to indicate the type of each device. The device type includes information indicating which modules each unit is composed of, information indicating which transmission medium and transmission method are used by the transmission / reception module of each unit.

In the content 722 of the body 720, a device identifier (one or multiple) to receive a message, the user 500 wants to convey to the base unit 300 or the external connection device 200 or the connection module 110. It is a good idea to include a message. The identifier indicates a device to receive a message, and may be a variety of IDs, names of devices, types of devices, and direction indicators indicating a message delivery direction. In this case, the identifier (s) and the message pair may be several.

The role and function of the above data will be described in more detail as follows. The device ID of the mobile unit 100 in the header 710, the device transmitted by Alias, that is, distinguishes the mobile unit 100. In this case, Alias can be omitted. In addition, the personal ID of the person 500 who uses the mobile unit 100 may be sent to know who requested it. Of course, these IDs may be omitted in a situation in which the distinction between the mobile unit 100 and the user 500 is not required. Then, the connection ID of the external connection device 200 or the connection module 110 is used. Through this connection ID, the base unit 300 knows which external connection device 200 or which connection module 110 it should send information to. Of course, if you only want to receive information to the receiving module 140 of the mobile unit 100, this connection ID is not necessary. Therefore, the content of the data is determined according to the taste of the user 500 of the mobile unit 100.

When sending an ID, send a message direction indicator to know the direction of message delivery. In the case of the connection ID of the external connection device 200, the type and the connection ID of the external connection device 200 are sent in pairs, and if you want to receive information from the various external connection devices 200, a plurality of pairs (external connection device types) And connection ID). In the case of the connection module 110 ID, the type of the connection module and the connection ID are also shown in the same manner as in the case of the external connection device 200 ID. When indicating the ID of each device, the type of the device is displayed together to distinguish what type of device.

The content entering the body 720 includes a message that the person 500 who uses the mobile unit 100 wants to deliver. This message is received by the base unit 300 or an external connection device (or connection module). At this time, an identifier indicating a device to receive the message is sent in pairs, and the identifier may be multiple for one message. It's like writing several people's addresses in the address field when sending e-mails to multiple people. Of course, multiple identifiers and messages can be paired. Data entered into the contents 722 of the body 720 may be added with various contents as necessary and may not have any contents at all.

A practical example of the data is shown in FIG. 14A. 'Amisys' is an example of unique code (715), 'RequestData / 0.9' indicates the format (716) and version (717) of the data used, and 'Content-encoding: Unicode' indicates the body encoding scheme. Let me know. 'User: Name <John Smith>, Age <30>' is used to indicate the personal ID of the mobile unit user. Next, IDs of the mobile unit, which is the subject transmitting data to the base unit, are used. 'From: Device <MU1213145>, Alias <JohnyMU>, Type <PhoneM>, Connection <0112345678>' indicates the Mobile Unit Device ID, Alias, and Mobile Unit Type of the mobile unit that is transmitting data. 'To: Device <MU1213145>, Alias <JohnnyMU>, Type <PhoneM>, Connection <0112345678>' shows Mobile Unit Device ID, Alias, Connection Module Type, and Connection ID. You will know whether to send. If a mobile user wants to have a message delivered to another location, he can use the address to forward, for example, 'To: Alias <John>, Type <e-mail>, or access <john@people.email>'. do. The next blank line is an empty line to distinguish the header from the body. The body is followed by 'CU: <PhoneM: 0112345678>, <e-mail: john@people.email>', which indicates the connection IDs of the devices that will receive the body's message, and the '(Hello, this is a' message from johny.) 'indicates the message to be delivered. Finally, '.' Represents tail 730. In the above example, ECC is all omitted.

In the above example, the mobile unit 100 having the light transmitting module 130 and the light receiving module 140 receives the data through the mobile unit 100 having the connection module 110 and the e-mail. This is an example of the contents of the data sent to the base unit 300. In the above example, the mobile unit user requests that the base unit deliver the message '(Hello, this is a message from johny.)' When the message is transmitted through the access module and e-mail.

An example of data when the mobile unit 100 has the light receiving module 140 and wants to receive data by the light receiving module 140 is shown in FIG. 14B. In this example, other contents are the same as those in FIG. 14A, and only the contents of "To:" in the header are different. Through the content of "To:", the base unit 300 can know where to send the message. In 14b, the body part is an empty message.

Types of the devices used in FIGS. 14A and 14B are as follows.

TIrDA20: A mobile unit that has an optical transmit / receive module and communicates with IrDA2.0 protocol.

e-mail: e-mail in the external access device 200

PhoneM: Phone Module of the connection module 110 attached to the mobile unit 100

In addition, the value indicating the type of the device should be changed according to the medium used, modulation / demodulation method, protocol, and device features. Herein, a predetermined type of "TIrDA20" is used to inform the media, modulation / demodulation method, protocol, and characteristics of the device. Depending on the various methods you use, predefine these types to determine the type. If the shape of the connection module 110 is different from that shown in the example, this also determines the shape accordingly and sends this content together when transmitting data. The contents of the data should be adjusted to properly inform the type of the medium to be used or the type of the connection module.

Now, other data formats used in the present invention will be described. Other data includes data sent from the base unit 300 to the external connection device 200, which is configured depending on the type of the external connection device 200. In addition, the data sent from the base unit 300 to the connection module 110 and the mobile unit 100 includes data transmitted to and received from the other mobile unit 100 or the external connection device 200. The format of these data is also the same as the basic data format of the present invention.

<Example 1-2>

In this embodiment, the basic configuration of the mobile unit is the same as that of the embodiment 1-1. The difference is that the mobile unit uses an optical transmission module and an RF reception module for short range wireless communication. Therefore, in the description of the present embodiment, the same parts as in the embodiment 1-1 will be omitted, and only different parts will be described.

As shown in FIG. 2, the mobile unit provides additional information related to content including meta information necessary for an information provider to provide predetermined information through a display device connected to the outside of the base unit and to obtain detailed information corresponding to the information. A mobile unit which communicates with a base unit, which is held, via light and RF for short-range wireless communication, an optical transmission module 130 for transmitting optical data to an optical reception module of the base unit, and an RF transmission module of the base unit. And a control module 120 for controlling the RF receiving module 140 and the optical transmitting module and the RF receiving module.

As shown in FIG. 15, the RF receiving module includes an antenna 141 'for receiving a short range wireless communication signal transmitted from an RF transmitter of the base unit, an amplifier 142' for amplifying a signal received by the antenna, And a demodulator 143 'for demodulating the amplified signal and a decoder 144' for decoding the demodulated signal.

The RF receiving unit transmits data from the RF transmitting module of the base unit using a near field wireless LAN communication method such as Bluetooth or a local random access RF communication method described in the second embodiment. Receive

Data transmitted from the RF receiving module 140 to the control module 120 is stored in a memory, and a display window or other display so that the user 500 can confirm a signal indicating that data has been received from the base unit and the stored data. Display through the device (such as making a sound or flashing). The received data may be displayed immediately or later, and the user 500 may retrieve the stored data.

In the present embodiment, the stored data represents content-related additional information including a response signal (ACK signal) and meta information provided from the base unit 300.

<Example 1-3>

In this embodiment, the basic configuration of the mobile unit is the same as that of the embodiments 1-1 and 1-2. The only difference is that the mobile unit uses the RF transceiver module for short range wireless communication. Therefore, in the description of the present embodiment, the same parts as in the embodiments 1-1 and 1-2 will be omitted, and only different parts will be described.

The mobile unit 100 has additional information related to the content including meta information necessary for the information provider to provide predetermined information through a display device connected to the outside of the base unit and to obtain detailed information corresponding to the information. Communicating with the base unit via RF for short-range wireless communication, and receiving the short-range wireless data transmitted by the RF transmitting module 130 for transmitting short-range wireless data to the RF receiving module of the base unit and the RF transmitting module of the base unit. And a control module 120 for controlling the RF receiving module 140 and the RF transmitting module and the RF receiving module.

In addition, the mobile unit 100 needs the reception module 140 to search for the base unit 300. In this case, the mobile unit 100 user 500 searches for a base unit 300 that can be received first before transmitting data, which is called a discovery process.

The mobile unit 100 sends a signal to the base units 300 at the time of the search, and the base unit 300 that receives the signal informs the mobile unit of which it can receive and who it is. Deliver to 100.

The signal indicating who is what means information that distinguishes it from other base units 300. The reason why this information is necessary is to allow the mobile unit 100 user 500 to see the searched base units 300 and make an accurate selection. For example, the name, form, location, etc. of the base unit 300 may be included.

Once a search is made, information about the base unit 300 that is ready to receive is displayed on a display window of the mobile unit 100 so that the user 500 of the mobile unit 100 can select it. View the information of the displayed base unit 300, select the desired base unit 300 to send the information request data.

As shown in FIG. 16, the short range wireless communication RF transmission module 130 encodes a signal input through the input unit and performs an error detection and correction function, and a predetermined signal is encoded by the encoder. And a high frequency oscillator 133 for oscillating a high frequency signal for short-range wireless communication to transmit the modulated signal to the RF receiving module of the base unit.

The short range wireless communication RF transmission / reception module receives data transmitted from the short range wireless communication RF transmission module of the base unit using a short range random access RF communication technology or a short range wireless LAN technology such as Bluetooth.

<Example 1-4>

This embodiment is the same as the previous embodiments the basic configuration. The only difference is that the mobile unit and the base unit use the proximity sensor as the communication medium.

The mobile unit of the present embodiment includes a base having additional information related to content including meta information necessary for an information provider to provide predetermined information through a display device connected to the outside of the base unit and to obtain detailed information corresponding to the information. Proximity transmission module 130 for communicating with the unit through a proximity sensor, and transmits data to the reception module of the base unit in proximity to the proximity reception module of the base unit, proximity to the proximity transmission module of the base unit And a proximity module 140 for receiving data transmitted from the proximity transmitter module of the base unit and a control module 120 for controlling the proximity transmitter module and the proximity receiver module.

<1-5 Example>

This embodiment is a case in which the reception module 140 is not present in the mobile unit 100 in Embodiments 1-1, 1-2, 1-3, and 1-4. That is, the base unit 300 also has no transmission module 330. Alternatively, even when there is a transmitting module in the base unit, if there is no receiving module in the mobile unit, such a case is included in the present embodiment since it is the same case for the mobile unit user. Conversely, this includes the case where the mobile module has a receiving module but the base module does not have a transmitting module. In addition, the case where the communication medium used by the reception module of the mobile unit and the transmission medium used by the transmission module of the base unit are different may not be included in this case. Thus, regardless of the presence or absence of the transmission module of the mobile unit and the transmission module of the base unit is not included in the various types of communication is not included in this embodiment.

When the mobile unit 100 sends data requesting information to the base unit 300, the mobile unit 100 is not equipped with the reception module 140 or cannot receive data transmitted through short-range communication. ) Cannot directly transmit data to the mobile unit 100. In addition, even in the various cases described above, direct data transmission between the base unit and the mobile unit is impossible.

The base unit 300 transmits data to the connection module 110 or the external connection device 200 of the mobile unit 100 through the service module 310.

Since the base unit 300 cannot directly transmit the response signal (ACK signal) to the mobile unit 100, various display devices (flashing, display window, Sound generation, voice, etc.) to be visually or audibly displayed so that the user 500 of the mobile unit 100 may know.

In this case, the service module 310 of the base unit 300 may transmit the response signal to the high speed SMS through the PSTN. In this case, the mobile unit 100 is equipped with a connection module 110 for receiving an SMS, or the user 500 of the mobile unit 100 possesses the external connection device 200.

<Example 1-6 Example>

This embodiment corresponds to a mobile unit in the case of communicating by changing the transmission medium in direct communication between the mobile unit and the base unit. When the transmission and reception module of the mobile unit and the transmission and reception module of the base unit communicate, it is common to continuously communicate with only one predetermined medium. For example, the transmission module of the mobile unit and the reception module of the base unit may use only the optical medium from the beginning to the end, and the reception module of the mobile unit and the transmission module of the base unit may use only the propagation medium from the beginning to the last. However, instead of insisting only one transmission medium from the beginning to the end, it is possible to communicate by changing the transmission medium on the way. For example, the transmission module of the mobile unit and the reception module of the base unit may initially communicate through the optical medium, and then communicate via the radio medium after an appropriate exchange of data. The same applies to the communication between the reception module of the mobile unit and the transmission module of the base unit.

Of course, in order to communicate with each other on the way, each unit must provide such means of communication, and the other unit must know that. To this end, before changing the communication medium, each unit needs to inform the other unit of its own communication means. This can be seen from the types or types of devices represented in the data exchanged with each other. Examples of this are shown in FIGS. 14 and 24 and 24 in Example 1-1. From this, once you know if the other unit supports the transmission medium you want to change, you can send data to that transmission medium.

In some cases, the other unit may wish to communicate by changing the transmission medium first. In such cases, just as in the above case, the contents of the data can be included in the request. Of course, the request could be to communicate using some transmission medium. An example of data used at this time is shown in FIG. In this example, a mobile unit with an optical transmit / receive module of type TIrDA20 has its own RF receive module of type Atype10_RFM, and the mobile unit in a way that is compatible with Atype10_RFM the next time the base unit transmits data. It tells you that you want to forward it to.

<Example 1-7>

The present invention provides a wireless mobile terminal including a voice network access function through a mobile communication company, a display unit for text and / or image output, a data input unit, a mobile phone with a data storage memory, a PDA and a PC equipped with a two-way pager or a wireless modem. A base unit having additional content-related information, including meta-information necessary to obtain detailed information of the predetermined information provided by the information provider via a display device connected to the outside of the base unit, and an RF for optical and / or short-range wireless communication. A composite wireless terminal having a mobile unit for communicating via.

This composite wireless terminal is shown in FIG. That is, it has the functions of the mobile unit mentioned above along with the functions unique to the general wireless mobile terminal. The wireless mobile terminal has a CPU, a memory, an I / O, and the like, and since the control module is implemented using the same, the function of the mobile unit is implemented by interlocking the transmitting module and the receiving module with the control module.

The hybrid wireless terminal may include an RF transmission module for transmitting short-range wireless data to the RF reception module of the base unit, an optical transmission module for transmitting optical data to the optical reception module of the base unit, in addition to the general wireless mobile terminal. At least one transmission module 130 of the near field transmission module, an RF reception module for receiving short-range wireless data transmitted by the RF transmission module of the base unit, an optical for receiving optical data transmitted by the optical transmission module of the base unit At least one receiving module 140 of the receiving module and the proximity receiving module, the RF transmitting module, the optical transmitting module, the proximity transmitting module, the RF receiving module, the optical receiving module, the control module 120 for controlling the proximity receiving module It is done by

In addition, the display window 814, the input keypad 815, the other input window 816, the external connector 817 and the input tool 818 may be further provided.

This composite wireless terminal has the same basic operations, functions, and configurations as the above-described embodiments, and thus, detailed descriptions of common parts will be omitted.

This composite wireless terminal can communicate using both RF and proximity sensors for optical and near field communications. Of course, it can also be configured using only one or two of the optical, short-range wireless RF and proximity sensor.

That is, the optical transmission module transmits and receives data using LED light and / or laser light, and when transmitting and receiving LED light and laser light at the same time, the optical transmission module and optical reception module for transmitting and receiving the light are separately provided for each light. can do.

The wireless mobile terminal may be connected to an external external connection device through an external connection unit 817 to communicate with a short range wireless communication protocol including RS232C, IrDA, USB, IEEE1394, and Bluetooth.

When the external access device accepts the communication method of the mobile unit and the base unit, the mobile unit communicates with the external access device through the RF transmission / reception module and the optical transmission / reception module. Communicate directly with the wireless mobile terminal using one of them.

The terminal can directly access the information provider's Internet or voice network using the received meta information.

2. Example of Base Unit

Second Embodiment

This embodiment relates to the base unit 300 and is shown in FIG. 2. In the present embodiment, when the information provider provides predetermined content through an externally connected display device, the base unit stores and provides content-related additional information including meta information in relation to the content to the mobile unit.

The control module of the base unit has a memory for controlling the entire base unit, storing data unique to the base unit, storing data input from the outside, and inputting, outputting, analyzing, processing, processing and It acts as a store. The optical transmitting module of the base unit transmits predetermined data to the optical receiving module of the mobile unit, and the RF transmitting module transmits predetermined data to the RF receiving module of the mobile unit. If there is no transmitting module in the base unit, it transmits predetermined data to the mobile unit through the service module.

The optical reception module receives data transmitted by the optical transmission module of the mobile unit and transmits the data to the control module, and the RF reception module receives data transmitted by the RF transmission module of the mobile unit and transmits the data to the control module.

In the present invention, the base unit includes at least one transmitting module 330 of the optical transmitting module, the RF transmitting module and the proximity transmitting module, and at least one receiving module 340 of the optical receiving module, the RF receiving module, and the near receiving module. Can be. Alternatively, in the present invention, the base unit may include at least one receiving module 340 and a service module among the RF receiving module and the proximity receiving module.

18 is a flowchart illustrating the operation of the base unit. That is, the base unit is in the standby state (s210), when a signal is captured (s220), the signal is analyzed (s230), and the transmitting module generates an Ack signal and transmits it (s240). If the transmission of the ACK signal is successful (s250), the service module processes the request (s260) and returns to the standby mode. If the transmission of the ACK signal fails, one of the optional service module and the standby mode when the ACK signal fails. Select (S260). If the service module is selected, the service module returns to the standby mode after processing the requirements. If the service module is selected, the service module immediately returns to the standby mode.

This embodiment includes both the case where the base unit is equipped with both RF and proximity sensors for communication with various mobile units, or when one or two communication media are used. .

Although there may be a case in which there is no transmission module such as a mobile unit, it is preferable to provide both transmission and reception modules in consideration of a realistic situation in which communication with an unspecified number of mobile unit holders is required.

In addition, it is also possible to further include a service module 310 for selection to transmit predetermined data to a connection device or an external connection device connected to the control module of the mobile unit through the Internet or a PSTN. However, it is also preferred to always be provided considering the unspecified number of mobile unit holders.

The optical transmitting and receiving module transmits and receives data using LED light and / or laser light, and when transmitting and receiving LED light and laser light at the same time, the optical transmitting module and optical receiving module are separately provided for each light. It is preferable. It is also preferable to purchase this device separately if other devices are required according to the protocol. That is, the base unit preferably includes both the LED light transmitting module and the laser light transmitting module.

The control module, each transmission and reception module is the same as the case of the mobile unit. Therefore, description thereof is omitted. 19 is an exemplary view of an optical receiving module 340.

In addition, the service module 310 transmits additional content-related information to the connection module 110 or the external access device 200 of the mobile unit 100 in response to a request of the mobile unit 100 or the user 500. Do it.

The service module 310 may be configured in each of the following cases or a combination of each case. In such a case, the following information should also be included in the data sent to the base unit 300 by the mobile unit 100. That is, the type of service desired by the user 500 of the mobile unit 100 and the connection ID of the external access device for the service in each case should be included. Due to the development of new media or the development of technology, the necessary service module 310 may be added in addition to the following cases.

And the mobile unit 100 has a connection module 110, the service module 310 of the base unit 300 to the connection module 110 of the mobile unit 100, such as wired / wireless Internet, SMS, Pager If the information can be transmitted at a high speed using a public communication network, the service module 310 may transmit a response signal, meta information, or other necessary information instead of the role of the transmission module 330.

When the SMS request is received from the mobile unit 100 (s110), the base unit 300 analyzes the request of the mobile unit 100 (s120). After analysis, the service module 310 of the base unit 300 processes the requested SMS (S130). The service module 310 transmits the processed SMS to an SMS transmission device (for example, an SMS base station through a dedicated line of a mobile phone or a telephone service company) of the base module 300 (s140), and the SMS transmission device is a user 500 Send the information required by the user 500 to the SMS receiving device (not shown) of (S150). In this case, as the SMS receiving device, a mobile unit 100, a mobile phone, a dedicated SMS receiving device, a connection module 110 having an SMS receiving function, or an external connection device 200 may be used. When the URL is transmitted by the SMS, the user 500 accesses the voice / data network using the access module 110 or the external access device 200 (s160).

In the base unit 300 with less use of SMS, an SMS transmission system using a mobile phone can be configured, and if there are many SMS requests or several base units 300 share SMS functions, an SMS dedicated line can be used.

SMS transmission can be speeded up through special implementation agreements with wireless providers. When such a high speed SMS is possible, the response function of the transmission module 330 may be replaced by a high speed SMS transmission.

In this way, the method using SMS can be used in the same manner when using various public communication networks such as two-way pager or wireless Internet.

Now, voice push / pull processing in the call center according to the present invention will be described. When the voice push request is received from the mobile unit 100, the service module 310 sends information requested by the user 500 to the user's connection module 110 or the external access device 200 by voice. For example, a user may call a mobile phone of the user 500 to transmit information. When the voice pull request is received from the mobile unit 100, the service module 310 sends a phone number to the connection module 9110 or the external access device 200, and then the user 500 calls and requests information by voice. To obtain. In this case, wired / wireless telephones through a Public Switched Telephone Network (PSTN) network may be used, and a service provider may operate a call center. Voice Portal is an example.

Now, the data processing method in the case of using the external access unit 200 as a designated wired or wireless Internet site will be described. This is illustrated in FIG. 13. When the receiving module 340 of the base unit 300 receives a request for information transmission from the mobile unit 100 of the user 500 to the designated wired / wireless internet site 650, the request is received by the service module 310. Is transmitted to, the service module 310 sends information to the designated site. Thereafter, the user 500 accesses the designated site 650 using the access module 110 or the external access device 200, and then checks the requested information. In this case, the designated wired / wireless internet site information can be implemented through various methods such as e-mail or web server, daemon program, socket, etc. to receive messages or information.

Now, a case in which the external access unit 200 is used as a unified messaging system will be described. When the base unit 300 receives a request for information transmission using the UMS (for example, voice, fax, e-mail, etc.) from the mobile unit 100, the service module 310 uses the UMS to access the connection module 110 or the external device. Sends the information requested by the user 500 of the connection device 200.

In this embodiment, the service module 310 may transmit the information requested by the mobile unit 100 to the user 500 through the pager in the same manner as the SMS.

And the service module 310 is illustrated in FIG. The service module 310 may include a processing unit 311 for processing the input data, an SMS server 312 for transmitting the data transmitted by the processing unit in a short message, and transmitting the data transmitted by the processing unit by e-mail. And a paging server 314 for transmitting the data transmitted by the processing unit as a paging signal.

The meta information is information that can be indirectly extracted from the information provider's URL, Mobile IP, IPv6 or telephone number. The means for inputting data from the outside includes the light receiving module, a keypad, a keyboard, a touch screen, a handwriting recognition window having a pointing pen, and a voice recognizer.

When the optical medium, in particular, LED light is used in the driver 133 of the mobile unit 100 outdoors, the base unit 300 may include natural light when the base unit 300 receives the light signal emitted by the mobile unit 100. It is necessary to use a filter to filter natural light. 21 shows an example of the light receiving module 340 having an optical filter. That is, natural light is removed from the optical data input from the mobile unit by the optical filter 341 ′, received by the PIN photodiode 342 ′ and transmitted to the front end 343 ′, which is an equalizer 344 ′. ), A demodulator 345 ', a detector 346', and a decoder 347 '. At this time, the synchronizer 348 'plays a role of synchronizing each of the components.

The transmission module 330 of the base unit 300 includes an acknowledgment signal indicating that the reception module 140 of the mobile unit 100 has correctly transmitted information to the base unit 300, URL, Mobile IP, IPv6 or It is a module that serves to deliver the necessary meta information and other information, such as a phone number to the receiving module 140 of the mobile unit 100.

Fig. 22 shows a configuration of a transmitter of the base unit 300 when using near field communication. That is, the transmission module 330 is composed of a transmitter 332 and a collision detection module 334 for inputting a transmission signal, and the transmitter 332 is composed of an encoder 333, a modulator 335, and an RF transmitter 337. .

In addition, the transmitting module 330 together with the receiving module 340 of the base unit 300 may communicate interactively with the transmitting / receiving modules 130 and 140 of the mobile unit 100.

Now, the format of data used in the base unit will be described. The data format in this case also follows the basic data format. The ID 712 (713) and the body 720 portions of the header 710 need only be determined according to the purpose of this data. That is, the header 710 may include a base unit ID and a mobile unit ID, and the body 720 may include data transmitted from the base unit 300. Of course, depending on the situation to which the invention is applied, there is a case where there is no need to distinguish the devices. For example, there may be times when it is guaranteed that there is only one device nearby to receive the outgoing data. In such cases, these IDs may not be needed.

The Base Unit ID can be a Device ID, an Alias, or both. Through this ID, the base unit 300 that sends the Ack signal can be distinguished. This ID may not be necessary in situations where there is no need to distinguish the base units. The Mobile Unit ID retransmits the Mobile Unit ID received by the base unit 300 so that the mobile unit ID knows which mobile unit 100 the Ack signal is for. When the mobile unit 100 needs to be distinguished, the Device ID of the Mobile Unit ID is necessary, but the Alias does not have to be. If the situation does not require the distinction of the mobile unit 100, these IDs may be absent. In this case, the device for sending the Ack signal is the base unit 300, and the device for receiving the Ack signal is the mobile unit 100, so that the IDs 712 and 713 of the header 710 are each located where the Ack signal is generated. You can find out which device you want to receive. At this time, the mobile unit 100 may respond only when the received Ack signal matches its Mobile Unit ID, or may react without ID verification. If you have a lot of other mobile units around, you will need to verify the ID, but if not, you won't need it. Therefore, the use of IDs may be determined in consideration of the situation to which the present invention is applied.

The body 720 contains data that the base unit 300 sends to the mobile unit 100. The content of this data can be appropriately designated by the user 500 of the base unit 300.

For example, when there are a plurality of base units 300 at a short distance, the base unit 300 which the user of the mobile unit 100 does not intend may respond. Therefore, it is necessary to confirm whether the responding base unit 300 matches the base unit 300 intended by the user of the mobile unit 100. In this case, the contents of the body 720 may be filled with contents that can distinguish each base unit 300.

Now, information related data sent from the base unit 300 to the mobile unit 100 will be described. This data is the data transmitted to the receiving module 140 of the mobile unit 100, and is almost the same as the case of the Ack signal. You just need to put the data you want to send in the message body 720.

In addition, the Ack signal and the data may be integrated. In such a case, only this data needs to be added to the body 720 of the Ack signal message.

An example of the Ack signal data is shown in FIG. Here 'Amisys' represents a unique code (715). 'Ack / 0.9' indicates the data format 716, version 717, and 'Content-encoding: Unicode' indicates the body encoding scheme. The personal ID 'User: Name <m-Hawaii>' was used to inform the base unit's owner or manager. Information about the base unit that transmits the message is shown through 'From: Device <BU4231123>, Alias <Bikini>, Type <Btype10>'. In order, Base Unit Device ID, Alias, and Base Unit type are shown. Among them, 'Btype10' is an example of a predetermined base unit type. Through this, what kind of service is provided by the base unit? Cognition. 'To: Device <MU1213145>, Alias <JohnyMU>' indicates the destination to receive the message from the base unit, which in turn indicates the Mobile Unit Device ID and Alias. The next blank line is used to distinguish between the header and the body. 'Thank you for your interest in our Hawaii tour.' Shown in the body 720 is the message content that the base unit intends to deliver. Finally, '.' Represents tail 730. In the above example, all ECCs are omitted.

24 shows an example of the data format when the Ack signal and the data are integrated.

The transmission module 330 of the base unit 300 extracts a mobile unit ID (device ID, alias) from the information sent by the mobile unit 100. Encoder / Modulator (333) (Base) ID (device ID, alias) and additional content-related information including meta information such as response signal, URL, telephone number, Mobile IP, IPv6, etc. together with the ID information. 335 is broadcast on antennas by using appropriate modulation schemes on the RF. The reception module 140 of the mobile unit 100 filters and receives only the message including its mobile unit ID among the messages transmitted by the various base units 300, such as a pager method.

When transmitting the transmission signal from the base unit 300 to the base unit 300 intended by the user of the mobile unit 100, including a small phrase or a picture that can be distinguished from other base unit 300 in the transmission signal when the broadcast signal is broadcast. Make sure that the transmission was made correctly. If other services such as encryption or transmission of the user's name are needed, other information can be added.

The modulation technique used in this embodiment will now be briefly described. In the present invention, by using analog modulation such as FM or AM, or by selecting a suitable one of various digital modulation methods such as modified Shift Shift Keying (PSK) or Frequency Shift Keying (FSK) Can be used. This is already known and can be used in the existing well-known method.

When the transmission module 330 of the base unit communicates with the reception module 140 of the mobile unit by using a short range wireless communication method, the base unit is generally installed randomly (Random) in many cases. In other words, when the base unit is installed in the street or in a shopping mall indoors, it is difficult to plan and arrange the base units in advance. It can be added or removed randomly without being aware of it. In addition, since the base units are densely arranged in high traffic areas, a symbol collision problem should be considered in a communication method using near field communication. Of course, if you increase the transmission speed by considering the amount of data and the number of users, the risk of collision can be reduced, and the design can easily solve the collision problem.

But if you want a more reliable system, you need to design the system to account for collision issues. The following describes communication protocol and collision detection for solving such a collision problem. In the present invention, this is referred to as local random access RF communication. This method uses pure ALOHA or a modified ALOHA protocol, which is identical to the one used by the Aloha Network developed by the University of Hawaii. However, as described below, the present invention implements the collision detection method in another manner. These protocols have the advantage of not having to consider where other units are when operating multiple mobile units and base units as described above in a random access method. In addition, spread spectrum may be used if necessary, and carrier sense multiple access / collision detection (CSMA / CD) or multiple access protocols may be additionally used to increase network capacity.

25 shows a collision detection method of the present invention, which is a detailed flowchart of step S250 of FIG. In addition, FIG. 26 is a configuration diagram of FIG. 25, and the base unit 300 is equipped with a collision monitoring module 334 in order to check whether there is no data collision between the two units. The collision monitoring module 334 is connected to other base units by wire, and the collision detection module 334 is generally mounted inside the transmission module 330 as shown in FIG. When the response data processing request is received (s310), it is stored in the response data memory (s320), and when the transmission module 330 of the base unit 300 transmits data wirelessly, it is transmitted to the collision detection module 334 by wire. Send a signal (D1) (s330).

The collision detection module 334 also has the same RF receiver as the reception module 140 of the mobile unit 100 having a wireless data reception function in itself, thereby transmitting a radio signal transmitted by the transmission module 330 of the base unit 300. Receive. The transmission module 330 of the base unit 300 broadcasts the response data in a short range wireless communication method, and the RF receiver (not shown) of the collision detection module 334 is received because the distance between the units is very close. One signal may be regarded as a signal received by the receiving module 140 of the surrounding mobile unit 100.

The collision detection module 334 performs collision detection by checking whether the signal D2 received by the RF receiver matches the signal D1 transmitted by the transmission module 330 of the base unit 300 to the wire (S340). . At this time, a match is determined by comparing the base unit ID, mobile unit ID, transmission signal contents, transmission signal transmission time, and the like.

If the result of the comparison does not match each other, it is determined that a collision has occurred and the collision detection module 334 notifies the control module 320 of the base unit 300 by wire that the transmission has failed (NACK) (s370). In operation S380, it is determined whether the retransmission condition is suitable. As a result, if the retransmission conditions are met, the process returns to the previous step (s330) to attempt retransmission.

If a collision continues to occur and it is determined to be unsuitable for a given retransmission condition (for example, retrying up to three times even if transmission information transmission fails), the transmission signal D1 stored in the storage device is deleted (s390), and a response signal is transmitted. After notifying the base unit 300 that the operation failed (s400), the transmission operation is terminated. Mobile unit 100 user 500 that has not received a transmission signal may request information from the base unit 300 again.

If the comparison result data in step s340 is identical to each other, the transmission signal D1 is deleted from the storage device (s350), and then the base unit 300 is notified that the response signal transmission is completed (s360). Ends.

Meanwhile, as shown in FIG. 21, the photodetector 342 ′ of the base module should be very sensitive, have a fast response time, and have good performance against noise, which is an unwanted signal. Since noise affects the sensitivity of the receiving module 340, it is important for the configuration of the receiving module 340. As the photodetector 342 ′, an appropriate device may be selected and used, including a PIN photodiode or an avalanche photodiode (APD).

Only one photodetector may be used in the photodetector 342 'of the receiver module 340, and may be configured as a two-dimensional array M × N of photodetectors according to the purpose of the base unit 300. have. Where M, N∈X, X = {1,2,3,... } Is related. In this case, the photo detection elements independently detect the optical signals sent from the mobile unit 100 and transmit them to the control module 320. The control module 320 of the base unit 300 is responsible for controlling the two-dimensional array of the light detection elements.

The control module 320 of the base unit 300 handles a problem of detecting and avoiding collision of an optical signal. When several users 500 shoot at the same time, the optical signal is only shot for a sufficiently short time from the mobile unit 100 to reduce the possibility of collision of the optical signal.

In addition, as described above, in the case where the transmitting module 130 of the mobile unit uses the LED light and the laser light simultaneously as a medium for transmitting data to the receiving module 340 of the base unit, the receiving unit of the base unit includes the LED light and the laser. Redundancy can be designed to detect light simultaneously.

3. Embodiment of data security and access control method

The present invention discloses various data security methods and access control methods. Various encryption algorithms can be used for security and access control of data exchanged between devices. The methods of security and access control using public key cryptography or various other cryptography are similar to those of applying cryptography in other fields. Therefore, in the present invention, the application of various existing security and access control methods will not be described, but only some specific methods will be described. However, other general access control and security methods can be applied to the present invention.

The access control and security methods to be described in this embodiment are largely divided into four types. There are four methods: simple access (no access control), basic control (access code exchange), time stamped hash code, and access code generation each time. In addition to this method, there are various ways to achieve the purpose of access control and security. For example, you can send encrypted data instead of sending simple data. Therefore, it is obvious to those skilled in the art that the present invention is not limited to the following embodiments.

<3-1 Example>

This embodiment is a simple access control method without access control. An overview of the method is described in FIG. 27. In this method, without any access control, anyone who has the mobile unit 100 to the base unit 300 any external connection device 200 or connection module 110 (own external connection device / connection module or other external Contact device / connection module). The access control method in this case is called a simple access control method.

In this case, a problem that can be considered is that a spam message can be sent to any other external access device 200 / connection module. As a solution to this problem to some extent, there is a method of filtering in the external access device 200 / access module. The values used in the filtering method are IDs of the respective devices-since the mobile unit 100 and the base unit 300 transmit their IDs by default when the message is transmitted. That is, the mobile unit ID (Device ID, Alias) and Base Unit ID (Device ID, Alias) shown in the message from the external access device 200 / access module responds only to the message that meets a predetermined rule. The rule used here is determined by the user 500 of the external connection device 200 / connection module and can be changed.

In some cases, the mobile unit 100 may send a spam message to the base unit 300. Even in this case, filtering is possible in the base unit 300 using the Mobile Unit ID. For example, one possible solution is to not respond if the same mobile unit 100 sends too many messages in a relatively short time.

<3-2 Example>

This embodiment is an access code exchange method. This method is an access control method that does not respond to any message sent to the external access device 200 / access module, but only to a message sent by a device that knows the access code of the external access device 200 / access module. . The concept of this method is shown in FIG. 29 is a flow chart of this method.

The access code acts as a password, responding only to messages sent with the correct access code (indicated by A in the example of FIG. 28), not to messages sent without or without an access code. The general control method is as follows.

First, the user 500 of the external connection device 200 / connection module arbitrarily generates an access code (A) and stores it inside the external connection device 200 / connection module (s410), and the external connection device 200 / connection This access code is notified only to the control module of the mobile unit 100 authorized by the user 500 of the module (S420). When the mobile unit 100 that knows the access code requests information to the base unit 300, the mobile unit 100 transmits the access code together (S430). The base unit 300 receiving the access code sends the information to be sent and the received access code to the external access device together (S440). The external access device 200 / access module receiving the signal extracts the access code and checks whether it matches the access code (s450), and responds only when it matches (s460) (s470).

To this end, an environment in which the user 500 creates an access code and can be stored inside the external access device 200 / access module, an environment in which the mobile unit 100 receives an access code, received in the mobile unit 100 An environment for storing access codes should be provided. Access code transfer from the external access device 200 to the other mobile unit 100 may be made by wire or wireless. Or you can move it yourself.

When the access code A is transmitted from the connection module 110 to its mobile unit 100, the access code A may be transmitted at a circuit level.

The method of generating the access code may be randomly generated by the user 500 or randomly generated in the device. This access code can be changed as desired by the user 500.

<3-3 Example>

This embodiment uses a hash code with a time stamp. The concept of this method is shown in FIG. When using the access code exchange method described above, the access code may be exposed in the middle. When sending from the mobile unit 100 to the base unit 300, or when sending from the base unit 300 to the external connection device 200 / connection module, because the access code is sent as it may be exposed to someone in the delivery process. . In addition, in the case of the malicious base unit 300, it may have an access code received by itself and later use it to send a message at will. To compensate for this, instead of sending the access code as it is, it sends a hash code generated from the access code.

That is, the access code (A) of the external connection device 200 / connection module is arbitrarily created by the user and stored inside the external connection device 200 / connection module, and informs only the mobile unit 100 that is allowed. When the mobile unit 100 sends a message to the base unit 300, it generates a hash code (H) using the access code (A) and the time (T) at that time. The time T used when creating the hash code H and the generated hash code H are transmitted to the base unit 300 together with the message. When the base unit 300 transmits a message to the external access device 200 / connection module, the base unit 300 sends the hash code H and the time T received from the mobile unit 100 together. The external access device 200 does not respond to the message if the difference between the time CT received from the base unit 300 and the time CT received from the message is greater than the allowable time D. Otherwise, it uses the time T received and its access code A to generate a hash code H2 and reacts only if it matches the received hash code H.

The allowable time (D) above should be appropriately determined in consideration of the message delivery time. The user can adjust the value or use the default value. This value may be determined differently according to the type of message transmitted to the external access device 200 / access module. For example, specify a small value for the form where the message is delivered relatively quickly, and a relatively large value for the form that does not.

Here, of course, the algorithm for generating the hash code must match that in the mobile unit and that in the external access point / connection module, and provide an environment for performing this function. Hashcode algorithms that can be used include SHA and MD5. Only one hashcode algorithm may be used in the present invention, but a plurality of hashcode algorithms may be applied. In this case, the external access device / connection module should also pass the hash code algorithm that it uses to the mobile unit.

The access code transfer method from the external access device 200 / access module to the mobile unit 100 is similar to the case of the access control method.

In the case of the integrated type in which the connection module 110 is attached to the mobile unit 100, the time T generated by itself is stored without sending the time T together, and when the data comes in, the stored time T is stored. You can also compare hashcodes.

<3-4 Example>

This embodiment is a method for generating an access code every time. The concept of this method is shown in FIG. In this embodiment, there is another method for solving the problem in the above-described access code exchange scheme.

That is, instead of generating one access code and using the same, instead of generating another access code each time in the external access device 200 / access module, the mobile unit 100 transmits it to the mobile unit 100, and the mobile unit 100 bases the message. When delivering to the unit 300 is to send a different access code every time. Then, when the external access device 200 / access module receives the message, the access code used is discarded. Therefore, even if the access code is exposed in the middle, the access code is only valid once, so that access is not made to the same access code later. In more detail,

The access code is generated in the external access device 200 / access module, and the access code is transmitted to the mobile unit 100. The mobile unit 100 delivers the access code with the base unit 300 when the message is delivered. The base unit 300 delivers the access code received with the message to the external access device 200 / access module. The external access device 200 / connection module checks whether it is its access code, and if the access result is its own access code, reacts and discards the access code used at this time. If it is not confirmed, it does not respond if it is not its own access code and keeps its own access code.

The access code can be generated and delivered one by one whenever the mobile unit 100 requests (mainly, if you want to send a message from the mobile unit 100 with the connection module 110 to its connection module) ), You can generate multiple access codes and tell them multiple access codes at once before making a request. The latter case may also be the case of the external connection device 200. If there are several access codes that are delivered to the mobile unit 100 but have not been discarded since there is no connection, of course, the external connection device 200 / connection module remembers all of them and attempts to access from the base unit 300. When compared, one by one to determine whether the reaction. In this case too, the used access code is discarded.

Above, the used access code can be discarded after one use, but it is also possible to set a value in advance and discard the access code only if it is used more than that. You can also set the number of available times for each access code.

In addition, the generation of the access code may be generated mechanically, for example, randomly using a random number generator, the user 500 may predetermine a condition and mechanically generate an access code that meets the condition. You can also create your own. The user 500 may generate several access codes in advance and store them in the device, or may generate one by one whenever a request is made.

The present invention can be variously modified and can take various forms and only the specific embodiments thereof are described in the detailed description of the invention. It is to be understood, however, that the present invention is not limited to the specific forms mentioned in the detailed description of the invention, but rather includes all modifications, equivalents, and substitutions within the spirit and scope of the invention as defined by the appended claims. It should be understood to do.

<Definitions of main terms of the present invention>

(1) Public Network: A general term of voice or data communication network that is not owned by any particular person or group and is used by an unspecified majority in common. This includes the Internet, public switched telephone networks (PSTNs), wired and wireless data communications networks, wireless telephone networks, two-way pagers, and telecommunications networks provided by service providers.

(2) Light Medium: A general term for light used for communication including LED light and laser light. Different transmission / reception apparatuses are used depending on conditions such as light type, light wavelength, communication protocol, and speed.

(3) Short-range RF communication: It includes short-range random access RF communication, Bluetooth, HomeRF, and proximity sensor methods through communication between the mobile unit and the base unit through a transmission / reception module.

(4) Short-range optical communication: Communication through optical media made between a mobile unit and a transmission / reception module of a base unit.

(5) Local Random Access Radio Frequency Communication (Local Random Access Radio Frequency Communication): It uses the ALOHA method developed by the University of Hawaii as a communication method through a transmission / reception module between a mobile unit and a base unit using RF. However, the collision detection method uses a collision detection module attached to the base unit by the method proposed in the second embodiment of the present invention. In some cases, a method such as carrier sense multiple access / collision detection (CSMA / CD) may be adopted.

(6) Short-range communication: Communication through a transmit / receive module between a mobile unit and a base unit. It includes near field optical communication and near field RF communication.

(7) Data Network: A generic term for all networks that can transmit and receive data, including the Internet.

(8) Standalone mobile unit: A mobile unit that does not have a connection module.

(9) Meta-Information: Information about information. It refers to information indicating the location of information or the path to obtain the information. This includes URLs, phone numbers, IPv6, mobile IP, UMS IDs, and any other information that can be extracted indirectly.

(10) Mobile unit: A device that is typically designed to be carried by an individual and capable of communicating with the base unit. Usually composed of sending module, receiving module, control module, and connecting module, but receiving module or connecting module can be omitted if necessary.

(11) Direction indicator: An additional descriptor that indicates the start, stop and destination points of the message.

(12) Base unit: Usually composed of a receiving module, a transmitting module, a control module, and a service module. In some cases, a service module or a transmitting module may be omitted. In general, it is connected to the display device to extract / store additional information related to the content, and provides additional information related to the content through communication with the mobile unit.

(13) Complex wireless terminal: A special implementation of an integrated mobile unit in which the terminal itself has a CPU, memory, and I / O, and a control module is implemented inside the terminal using these.

(14) Private Network: A generic term for communication networks owned by a specific person or group.

(15) Service module: part of a base unit that handles mobile unit requests over the public network. The base unit can also receive data or control commands from this service module from outside.

(16) Descriptive Information: General information related to content other than meta information.

(17) Hash code with time stamp: A hash code created with time information.

(18) external access devices: A generic term for all devices with the ability to access public or private networks. Other mobile units with connection modules are also included.

(19) Voice Network: A network capable of transmitting / receiving voice including PSTN and VoIP.

(20) Integrated mobile unit: A mobile unit having a connection module.

(21) Radio wave medium: Near field random access RF communication, Bluetooth, HomeRF, proximity sensor, etc. are performed using radio wave medium. Generally refers to a radio frequency band, but is a general term for a radio wave including millimeter wave and microwave.

(22) Connection module: A module having a function of being connected to a mobile unit and connected to a public / private network.

(23) Collision detection module: A part of the RF transmission module of the base unit described in Embodiment 2, which detects whether information is properly transmitted during short-range random access RF communication.

(24) Additional Content-related Information: A generic term for information that a base unit provides to a mobile unit while communicating with the mobile unit, including descriptive information and meta information. In addition to the contents of the display device, the information that the mobile unit can receive is given. In addition to the information originally held, the base unit also contains information obtained by accessing the voice / data network using a service module.

(25) Content: Information delivered via the display.

(26) Display: Collectively, signs, posters, billboards.

According to the present invention, a mobile unit holder can obtain desired information by connecting to a voice or data network through a communication with a base unit interworking with a display device anytime, anywhere.

In addition, when the mobile unit is integrated with the connection module becomes a multi-function mobile unit is much more convenient to use. In particular, when combined with IMT-2000 or PDA, which is the next generation video terminal, it is easier to access various networks.

In particular, the present invention can be utilized in various fields such as advertising, public relations, and marketing, and in particular, it is considered that a very convenient business can be achieved when combined with e-commerce.

In particular, the present invention can be applied in various ways in the field of commerce as a base technology in the field of electronic commerce.

By utilizing the present invention, home automation can be implemented more easily.

Claims (1)

A mobile unit that communicates via light with a base unit that holds additional information about the content needed to obtain information from an information provider, An optical transmission module for transmitting optical data to the optical reception module of the base unit; An optical reception module for receiving optical data transmitted by the optical transmission module of the base unit; And A mobile unit comprising a control module for controlling the optical transmission module and the optical reception module.