KR100991045B1 - Short Range Digital Data Transceiver - Google Patents

Abstract

A short range digital data transmission / reception apparatus is disclosed. A wireless interface unit for receiving the RF signal to generate baseband data, converts the baseband data into an RF signal, and transmits the signal; And a memory unit for storing data received or sent through the external interface unit, baseband data received from the air interface unit, and baseband data transmitted to the air interface unit to be converted into an RF signal, and received through the external interface unit. A digital data transmission / reception interface apparatus including a protocol processing unit for encoding the data stored in the baseband data according to a predetermined protocol, decoding the baseband data received through the air interface unit, and storing the baseband data received in the memory unit. Constitute a. Therefore, it is possible to wirelessly connect various electromagnetic periods by being mounted on a universally used interface port such as USB.

MOT, USB, Bluetooth, Near field communication, RFID, Abstraction

Description

Near-field digital data transmission / reception device {NEAR-DISTANCE DIGITAL DATA TRANCEIVING DEVICE}

The present invention relates to a device for transmitting and receiving digital data between devices located in a short distance, and more particularly, a wireless interface between various devices such as a computer body, a computer peripheral device, a home appliance, an advertisement device, a portable terminal, and the like. The present invention relates to a short-range digital data transmission / reception apparatus that can be provided by abstraction (abstraction) in a widely used interface method, for example, a USB interface or a DVI interface.

Computer body, computer peripherals (e.g. printers, scanners, speakers, input devices such as keyboards and mice, external hard disks, monitors), home appliances (e.g. DVD players, Blu-ray / HD-DVD players and display devices) Widely used interface methods for interconnection are USB (Universal Serial Bus), DVI (Digital Video Interface) interface, and IEEE-1394.

However, in the case of such an interface method, there is an inconvenience of connecting each device by wire through a cable suitable for each interface method. For example, in order to connect a keyboard, at least one monitor, a speaker system, a printer, and the like connected to one computer main body, several cables must extend from the computer main body to each peripheral device.

The connection through the cable connection method may limit the degree of freedom of arrangement of various devices existing in the room, and the distance between the devices is limited by the length of the cable. In particular, the cables connecting the devices must be properly wired, so that the cables are routed for connection between a large display device in the living room and the computer body in the library, or a video player and a living room in the living room cradle. There is a problem in that the degree of freedom of placement is extremely limited, such as cable wiring between projectors located on the ceiling.

In order to solve this problem, wireless interfaces have been introduced to wirelessly connect each device. However, in the case of such an air interface method, each device has a problem in that it must be designed in advance to correspond to the air interface method.

For example, in order to use a Bluetooth wireless interface, there is a problem that each device should have a Bluetooth transceiver chip and an antenna for supporting Bluetooth. Therefore, such wireless interfaces are not widely used in various devices and are only used for limited applications such as a connection between a mobile communication terminal and a headset. In addition, since each device device must be newly designed and produced in order to support the above-described air interface, it is a factor that leads to a significant increase in unit cost.

An object of the present invention for solving the above problems is to mount to a host device using a universally used external interface standard, and to be equipped with a variety of electronic devices, to enable a wireless interface to wirelessly interconnect each other It is possible to provide a short-range digital data transmission / reception apparatus.

The present invention for achieving the above object, the radio interface unit for receiving the RF signal to generate baseband data, converts the baseband data into an RF signal and transmits; An external interface unit which sends data to the outside through a predetermined wired external interface and receives data from the outside; A memory unit for storing data received or sent through the external interface unit, baseband data received from the air interface unit, and baseband data transmitted to the air interface unit to be converted into an RF signal; And a protocol processor configured to encode data received through the external interface unit and stored in the memory unit into the baseband data according to a predetermined protocol, and store decoded baseband data received through the air interface unit in the memory unit. It provides a short-range digital data transmission and reception interface device including a.

Herein, the wireless interface unit may be configured to transmit and receive an RF signal based on at least one of Bluetooth, Radio Frequency Identification, and IEEE 802.11 wireless LAN, and to mutually convert baseband data and RF signal. Can be.

Here, the air interface unit, RF transceiver for receiving and transmitting the RF signal; And a baseband processor configured to generate baseband data by processing the RF signal received by the RF transceiver and to transmit baseband data through the RF transceiver.

Here, the MOT (Multimedia Object Transfer) protocol may be used as a predetermined protocol in which the protocol processor encodes and decodes the data stored in the memory unit.

Here, the protocol processing unit may be configured to broadcast, through the air interface unit, a predetermined unique device name and a predetermined unique identifier at predetermined time intervals.

Here, the external interface unit may be configured to transmit and receive data to and from the outside using a universal serial bus (USB) and / or a digital video interface (DVI) interface.

Here, the protocol processor, the memory unit and the external interface may be connected by a bus, wherein the bus may be an Advanced High-Performance Bus (AHB) bus.

In addition, the digital data transmitting and receiving apparatus further includes a secondary bus connected to the bus via a bridge, and the secondary bus has an external transmission rate that is relatively slower than the external interface connected to the bus. The interface unit may be configured to be connected. In this case, the secondary bus may be an Advanced Peripheral Bus (APB) bus. In this case, the relatively slow external interface may be configured to support a parallel interface or a UART interface.

When using the short-range digital data transmission and reception apparatus according to the present invention as described above may be mounted on the host device by the external interface standard that is commonly used to support the wireless interface.

Therefore, by simply connecting a wired connection between various electronic devices existing in a home or office such as a home appliance, a computer main body, a computer peripheral device, etc. to an interface port such as USB, IEEE-1394, DVI, etc. It has the advantage of being wireless.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. Like reference numerals are used for like elements in describing each drawing.

Terms such as first, second, A, and B may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Short-range digital data transmission and reception apparatus according to the present invention

1 is a block diagram illustrating a configuration of a short-range digital data transmission and reception apparatus according to the present invention.

Referring to FIG. 1, the short-range digital data transmission / reception apparatus 100 according to the present invention may include a wireless interface unit 110, an external interface unit 120-1 to 120-4, a memory unit 130, and a protocol processing unit 140. It may be configured to include.

At this time, the air interface 110 is a component that receives the radio frequency (RF) signal, generates baseband data, converts the baseband data into an RF signal, and transmits the signal. In addition, the wireless interface unit 110 of the short-range digital data transmission and reception apparatus 100 according to the present invention is connected to the wireless interface unit is connected to an antenna for transmitting and receiving RF signals.

Herein, the wireless interface unit may be configured to transmit and receive an RF signal based on at least one of Bluetooth, Radio Frequency Identification, and IEEE 802.11 wireless LAN, and convert baseband data and RF signal to each other. . That is, in more detail, the radio interface unit performs a processing operation of generating baseband data by processing an RF transceiver 111 for receiving and transmitting an RF signal and an RF signal received by the RF transceiver. The baseband processor 112 may receive a baseband data to be transmitted through an RF transceiver and perform a baseband processing operation.

That is, the baseband processor 112 receives baseband data from the protocol processor 140 and the memory 130 to be described later, and performs baseband processing corresponding to the above-described standards of Bluetooth, RFID, and IEEE 802.11 WLAN. It performs and transmits to the RF transceiver, and performs the baseband processing for the RF signal received from the RF transceiver to convert the baseband data. In this case, the baseband processing performed by the baseband processor on the baseband data received from the protocol processor 140 may include, for example, processing such as coding, encryption, interleaving, and the like.

Meanwhile, the short-range digital data transmission / reception apparatus according to the present invention described above with reference to FIG. 1 may be one chip into a system on chip (SoC).

In this case, although all the components illustrated in FIG. 1 may be one chip, it is possible to exclude the air interface unit 110 and the remaining external interface units 120-1 to 120-4, and the memory unit 130. And it is also possible to make the protocol processing unit 140 into one chip.

In addition, among the air interface unit 110, the baseband processor 112 except for the RF transceiver 111 may be one-chip into one chip together with the remaining components. Because the RF transceiver has to process the RF signal, there may be a case where it is difficult to make one chip with the other components in the process, and there is a situation of a radio interface method that must be supported due to the characteristics of the short-range digital data transceiver according to the present invention. Since it may be diversified according to the present invention, it may be desirable to implement a separate module of the air interface unit and the remaining components that can be designed independently of the air interface method.

In this case, when the short-range digital data transmission / reception apparatus according to the present invention is one-chip into a system on chip (SoC), each component to be described or described below is designed as one functional block (Intellectual Propery core) and one It can be placed in a chip.

In addition, each component may be connected by an internal bus structure, and as a bus structure that can be used, an Advanced Microcontroller Bus Architecture (AMBA) proposed by ARM and widely used in embedded devices or SoCs Can be adopted.

The AMBA bus has three types of buses: AHB (Adavance High-performance Bus), Advanced System Bus (ASB), and Advanced Peripheral Bus (APB), and operates in a pipelined manner to ensure high transmission speeds. AHB bus is preferably used as the bus 150 between the above-described components.

In addition, in the case of an external interface unit (parallel interface and UART interface) supporting a low transmission rate among the external interface units 120-1 to 120-4 to be described later, an APB bus may be adopted, which will be described later.

Next, the external interface units 120-1 to 120-4 are components that send data to the outside and receive data from the outside in a predetermined wired external interface.

Based on the above-described object of the present invention, the short-range digital data transmission and reception apparatus according to the present invention is characterized in that it is mounted on a variety of hosts by a universal wired interface method to implement a wireless interface.

Therefore, the external interface unit 120-1 to 120-4 that can be adopted in the short-range digital data transmission / reception apparatus according to the present invention includes a universal serial bus (USB) and a digital video interface (DVI). Various interface standards such as DisplayPort, Parallel Interface, UART, RS-232C, and IEEE-1394 can be adopted. In FIG. 1, four external interface units 120-1 to 120-4 for supporting four types of external interfaces (USB, DVI, parallel, and UART) are illustrated. However, at least one external interface unit may exist, and according to the configuration of the short-range digital data transmission / reception apparatus according to the present invention, it may have only one external interface unit or may include a plurality of external interface units.

On the other hand, the external interface that supports the interface standards such as USB, DVI, IEEE-1394, etc., which must support relatively high transmission speed can be connected to the above-mentioned components through the AHB bus, and must support a relatively low transmission speed. The parallel interface, the UART interface, etc. may be connected to the above-described components via a secondary bus, for example, the APB bus 152. In this case, the APB bus is configured to be connected to the AHB bus through a bridge 151 connecting the buses.

The memory unit 130 includes data to be received or sent through the external interface units 120-1 to 120-4, baseband data received by the air interface unit, and baseband to be converted into an RF signal by the air interface unit. A component that stores data.

That is, the memory unit 130 stores data received from a host equipped with a near digital data transmission / reception device through an external interface and stores data to be sent to a host equipped with a near digital data transmission / reception device through an external interface. The component to store. In addition, the memory unit is a component that stores baseband data received by the air interface unit and baseband data to be converted into an RF signal to the air interface unit.

Therefore, the memory unit 130 divides the data to be received from the external interface unit or sent through the external interface unit and the baseband data received from the air interface unit or to be sent through the air interface unit into separate address areas. It will be saved as separated.

Finally, the protocol processor 140 encodes the data received through the external interface unit and stored in the memory unit into the baseband data according to a predetermined protocol, and decodes the baseband data received through the air interface unit to decode the memory. The component to store in the wealth.

The short-range digital data transmission / reception apparatus according to the present invention uses a predetermined air interface method, but an external interface between the short-range digital data transmission / reception apparatuses and devices equipped with the short-range digital data transmission / reception apparatuses and respective short-range digital data transmission / reception apparatuses. A protocol is needed to mediate between interface methods.

That is, as a protocol for mediating conversion between various air interface methods and various external interface methods, an intermediate protocol for abstracting each interface method is needed.

According to an embodiment of the present invention, a multimedia object protocol (MOT) protocol used for digital audio broadcasting (DAB) and digital multimedia broadcasting (DMB) in Korea may be used.

The MOT protocol is a protocol defined in ETSI EN 301 234, and is a transport protocol that is designed to extend and receive various multimedia data. Hereinafter, the description related to the MOT protocol is based on the contents defined in ETST EN 301 234.

2 is a conceptual diagram illustrating a packet structure of a MOT protocol that can be used by a short-range digital data transmission / reception apparatus according to the present invention.

2, a packet structure defined in the MOT protocol is described. The file or object transmitted in the MOT protocol is divided into several packets 200-1 to 200 -N and transmitted, and each of the packets is a packet header 211, a packet data field 212, and a packet CRC field 213. Are separated again.

Again, several packets come together to form a data group. That is, data fields of several packets are gathered to form one data group 220 or 230. The data group 220 is again divided into a data group header 221, a session header 222 defining a session of the data group, a data group data field 223 which is the body of the data group, and a data group CRC field 224. . Another data group 230 similarly includes a data group header 231, a session header 232 defining a session of the data group, a data group data field 233 that is the body of the data group, and a data group CRC field 234. To be separated.

The header 221 or 231 of the data group specifies the type of the data group. Types of data groups are divided into data groups containing the body of a file to be actually transmitted, and a data group of a type that specifies information of a file or an object to be transmitted or received.

The data group containing the body of the file actually transferred is specified as 4 or 5 (if encrypted) in the data group header.

In addition, the MOT protocol defines two modes as a type of data group that specifies the information of a file or an object to be transmitted or received. The MOT directory mode and the header mode are defined as will be.

The directory mode is a method of managing a content provider by combining them in a single entity called a MOT directory of files and objects located at a receiving side. At this time, the MOT directory is transmitted from the sending side to the receiving side in parallel with the files or objects described by the MOT directory. At this time, the data group for transmitting the MOT directory information is transmitted by specifying a type of 6 or 7 in the corresponding data group header. Header mode, on the other hand, is a mode that can be used in a single user application that uses one file or object at a time, and transmits a MOT header that describes the file or object to be transmitted before transmitting the file or object. That's the way. At this time, the data group for transmitting the MOT header information is transmitted by designating the type as 3 in the corresponding data group header.

Therefore, since the digital data transmission / reception apparatus according to the present invention assumes a device detachable from an external interface unit to various hosts, a header mode may be more preferable since a digital data transmission / reception apparatus must be accommodated through a pair of digital data transmission / reception apparatuses. Can be.

Meanwhile, in FIG. 2, the type 3 data group 230 for transmitting the aforementioned MOT header and the type 4 or 5 data groups 220 transmitted after the data group are combined to be actual data to be transmitted. 240 is shown.

The header core 241 included in the data group data field 233 of the type 3 data group 230 may variously designate the type of content included in the data body 243 to be transmitted later. For example, the upper class of content of 6 bits and the lower class of content of 9 bits are specified to specify the type of content to be transmitted in detail.

Table 1 is a diagram showing an example of defining the type of content to be transmitted in the digital data transmission and reception apparatus according to the present invention.

TABLE 1

contents
Higher classification (6 bits) contents
Top Category Description contents
Subclass (9 bit) contents
Subclass Description 000000 General data 000000000 Object transfer 000000001 MIME / HTTP 000000011 Printer Data 000001 text 000000000 Text (US ASCII) 000000001 Text (ISO Latin 1) 000000010 HTML 000010 image 000000000 GIF 000000001 JFIF 000000010 BMP 000011 audio 000000000 MPEG I audio layer I 000000001 MPEG I audio layer II 000000010 MPEG I audio layer III 000000011 MPEG II audio layer I 000000100 MPEG II audio layer II 000000101 MPEG II audio layer III 000000110 Uncompressed PCM audio 000000111 AIFF 000001000 ATRAC 000001001 ATRAC II 000001010 MPEG 4 audio 000100 video 000000000 MPEG I video 000000001 MPEG II video 000000010 MPEG 4 video 000000011 H.263 000000100 Display data (DVI) 000101 MOT transmission 000000000 Header update 000110 system 000000000 MHEG 000000001 Java

Referring to Table 1, for example, the content is classified by general data, text, image, audio, video, MOT transmission, system, etc. using a 6-bit content higher classification field. Similarly, for example, the content belonging to each content upper classification is further subdivided and specified using a 9-bit content lower classification field.

The content upper classification and the content sub classification illustrated in Table 1 are merely examples, and in the case of the type of content not defined in Table 1, the content upper classification and the content sub classification may be additionally defined and supported.

There is a need for a mechanism for identifying and recognizing each other between short-range digital data transmission and reception devices according to the present invention.

That is, since the short-range digital data transmission / reception apparatus according to the present invention may be mounted in various hosts to form a wireless environment, a large number of short-range digital data transmission / reception apparatuses existing within the RF signal reach distance of the radio interface method adopted by the corresponding air interface unit. We need a way to make each one unique.

For example, at predetermined time intervals, the short-range digital data transmission / reception apparatus broadcasts its own name and unique ID information to a variety of short-range digital data transmission / reception apparatuses present in its communication range. You can tell it to identify yourself.

3 is an exemplary diagram of identification information transmission packets of devices in a digital data transmission and reception apparatus according to the present invention.

Referring to FIG. 3, the identification information transmission packet includes a sink field 301, parameter fields 302-1 to 302-N repeated as many as the number of parameters to be transmitted, and parameter data fields 303 specified in each parameter field. -1 to 303-N).

The sink field 301 is composed of a bit string having a continuous value (for example, a continuous '1' value of 12 bits) and is a field transmitted to acquire synchronization between a transmitter and a receiver.

The parameter fields 302- 1 through 302-N are fields for specifying parameters related to device information to be transmitted. For example, it may be configured to specify a parameter to be transmitted as a bit string of 6 bits.

Table 2 is a table defining parameters that can be used to specify the identification information of the devices in the digital data transmission and reception apparatus according to the present invention.

TABLE 2

Parameter id Parameter data 100011 EquipmentName 100001 IdentificationNumber

The table shown in Table 2 illustrates the definition of the device name and device identification number as parameters. Since the parameter field is defined as 6 bits, the identification information parameter of the additional device can be extended. Can be added. In this case, the device name may be assigned a unique value or a user input value in the parameter data field following the parameter field in which the name parameter ID of the device is recorded. The unique number of the device may be a unique ID such as a GUID, A unique value in the form of a combination of a device's manufacturer, date of manufacture, serial number, etc. may be defined and the unique number parameter ID of the device may be specified in the parameter data field following the recorded parameter field.

For example, in the case of a printer device, the name of the device may be designated as 'XXXPrinter', and the unique number of the device may be assigned a unique number of predetermined digits such as '0xFA88ED99'.

Accordingly, the digital data transmission / reception apparatus according to the present invention broadcasts the packet illustrated in FIG. 3 at a predetermined time interval (for example, once per second) to recognize its identification information to adjacent digital data transmission / reception apparatuses. Can be.

Example of the use of a short-range digital data transmission and reception apparatus according to the present invention

4 is a conceptual diagram illustrating an environment in which a short-range digital data transmission / reception apparatus according to the present invention is used.

Referring to FIG. 4, the short-range digital data transmission / reception apparatuses 411, 421, 431, 441, 451, and 461 according to the present invention may include a desktop computer 410, a notebook computer 420, and the computer device ( The printer 460, the display monitor 450, the television receiver 440, and the like used in connection with the 410 and 420 may be mounted and used. In addition, the portable terminal 430 supporting an external interface, such as a PDA, a cellular phone, a portable media player (PMP), or an MP3 player, may be mounted and used.

At this time, each of the short-range digital data transmission and reception apparatuses are configured to perform wireless data transmission and reception using the air interface method. For example, wireless data communication is performed using a wireless interface method such as Bluetooth, RFID, IEEE 802.11, or the like.

In addition, as illustrated in FIG. 1, each short-range digital data transmission / reception apparatus includes an external interface unit, and the external interface unit is an interface method between a conventional computer main body and a peripheral device such as a USB interface, a DVI interface, a parallel interface, and a UART interface. It is configured to support.

For example, since the computer device 410 and the printer 460 are typically connected through a USB interface or a parallel interface, the printer 460 is connected to the near-field digital data transceiver 461 mounted on the printer and the parallel interface or USB. While exchanging data by an interface method, the short-range digital data transmission / reception device 461 mounted on the printer is configured to exchange data with the short-range digital data transmission / reception device 411 connected to the computer 410 by a Bluetooth wireless method.

Similarly, since the computer device 410 and the monitor 450 are typically connected through the DVI interface method, the short-range digital data transmission / reception device 451 mounted on the monitor 450 exchanges data with the monitor through the DVI interface method. The short-range digital data transmission / reception apparatus 451 mounted to the monitor is configured to exchange data with the short-range digital data transmission / reception apparatus 411 connected to the computer 410 by Bluetooth wireless method.

5 is a conceptual diagram illustrating an environment of an advertisement device and a terminal for obtaining advertisement information from the advertisement device as an application example of a short-range digital data transmission / reception apparatus according to the present invention.

Referring to FIG. 5, when the portable terminal 520 equipped with the digital data transmission / reception apparatus 521 according to the present invention is adjacent to the advertisement apparatus 510 disposed in public transportation, public places, streets, etc., the advertisement apparatus ( An example of an application of the short-range digital data transmission / reception apparatus according to the present invention, which downloads detailed advertisement information from the digital data transmission / reception apparatus 511 mounted to the advertisement device 510 from 510, is illustrated.

The digital data transceiving devices 511 and 521 mounted to the advertising device 510 and the portable terminal 520 are connected through short-range wireless communication such as RFID or Bluetooth, and the advertising device 510 continuously maintains its RF reach distance. Search for the digital data transceiving devices present in the mobile terminal, and transmit detailed information corresponding to the advertisement content currently being advertised in the advertising device 510 to the portable terminal 520 with respect to the retrieved digital data transceiving devices (520 in FIG. 5). Can be configured.

In this case, the portable terminal 520 may be a mobile communication terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a notebook computer, or the like, and the advertisement device may be an advertisement device installed on a street, a train, a bus, a subway, or the like. have. Preferably, the advertising device is provided with a predetermined display device, and is configured to play an advertisement in the form of a video or an image. By selecting the desired advertisement, the advertisement detailed information on the selected advertisement may be configured to be transmitted through the digital data transmitting and receiving devices 511 and 521.

In this case, the detailed information of the advertisement may include various detailed information such as the business information, the contact information, the map information of the advertiser, the GPS coordinate value for navigation, the address of the Internet homepage or the Internet shopping mall, etc.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims It can be understood that

1 is a block diagram illustrating a configuration of a short-range digital data transmission and reception apparatus according to the present invention.

2 is a conceptual diagram illustrating a packet structure of a MOT protocol that can be used by a short-range digital data transmission / reception apparatus according to the present invention.

3 is an exemplary diagram of identification information transmission packets of devices in a digital data transmission and reception apparatus according to the present invention.

4 is a conceptual diagram illustrating an environment in which a short-range digital data transmission / reception apparatus according to the present invention is used.

5 is a conceptual diagram illustrating an environment of an advertisement device and a terminal for obtaining advertisement information from the advertisement device as an application example of a short-range digital data transmission / reception apparatus according to the present invention.

<Explanation of symbols for the main parts of the drawings>

110: wireless interface unit 111: RF transceiver

112: baseband processing unit

120-1 to 120-4: external interface unit

130: memory unit 140: protocol processing unit

150: bus 151: bridge

152: secondary bus

Claims (12)

A radio interface unit for receiving the RF signal, generating baseband data, converting the baseband data into an RF signal, and transmitting the baseband data; An external interface unit which sends data to the outside through a predetermined wired external interface and receives data from the outside; And A memory unit for storing data received or sent through the external interface unit, baseband data received from the air interface unit, and baseband data transmitted to the air interface unit to be converted into an RF signal; And A protocol processor which encodes data received through the external interface unit and stored in the memory unit into the baseband data according to a predetermined protocol, decodes baseband data received through the air interface unit, and stores the baseband data in the memory unit; , And the protocol processor broadcasts a unique device name and a predetermined unique identifier through a wireless interface unit at predetermined time intervals. The method of claim 1, The wireless interface unit may transmit and receive an RF signal according to at least one of Bluetooth, Radio Frequency Identification, and IEEE 802.11 wireless LANs, and convert baseband data and RF signals to each other. Data transmission and reception interface device. The method of claim 1, The wireless interface unit, An RF transceiver for receiving and transmitting an RF signal; And And a baseband processor configured to process baseband data by processing the RF signal received by the RF transceiver, and to transmit baseband data through the RF transceiver. The method of claim 1, And a predetermined protocol in which the protocol processor encodes and decodes the data stored in the memory unit is a multimedia object transfer (MOT) protocol. delete The method of claim 1, The external interface unit is a short-range digital data transmission and reception interface device, characterized in that for transmitting and receiving data with the outside in a universal serial bus (USB) interface method. The method of claim 1, And the external interface unit transmits / receives data to / from the outside through a DVI (Digital Video Interface) interface method. The method of claim 1, And the protocol processing unit, the memory unit and the external interface unit are connected by a bus. The method of claim 8, And the bus is an AHB (Advanced High-Performance Bus) bus. The method of claim 8, Further comprising a secondary bus connected to the bus via a bridge, And an external interface having a lower transmission speed than the external interface connected to the secondary bus. The method of claim 10, And the secondary bus is an APB (Advanced Peripheral Bus) bus. The method of claim 10, The short-range external data interface of the slow digital data transmission and reception interface, characterized in that for supporting a parallel interface or a UART interface.

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