KR20060128525A - Apparatus and method for accessing to multimedia content - Google Patents

Abstract

A device and a method for accessing multimedia contents are provided to transfer an RFID(Radio Frequency IDentification) of the multimedia contents selected from a user among the searched multimedia contents by displaying a part of the multimedia contents to the user wanting to access the multimedia contents stored/matched with the RFID. A receiver(410) receives a command for converting an offset value. A searcher(430) searches thumbnails stored/matched with the converted offset value. A display part(440) displays the searched thumbnails. A transmitter(460) transmits the offset value corresponding to the thumbnail selected by the user among the displayed thumbnails together with the RFID of the device. The RFID is the information matched with a starting address of the multimedia contents stored for the thumbnail. The offset value is the information for an address storing the multimedia contents placed to an area after the starting address.

Description

Apparatus and method for accessing to multimedia content}

1 illustrates the evolution of digital information appliances.

2 is a view showing a conventional RFID system.

3 is a diagram illustrating an RFID system according to an embodiment of the present invention.

4 is a block diagram of an apparatus for accessing multimedia content according to an embodiment of the present invention.

5 is a table illustrating addresses of multimedia contents according to offset values of RFID according to an embodiment of the present invention.

6 is a flowchart illustrating a method for accessing multimedia content according to an embodiment of the present invention.

<Explanation of symbols on main parts of the drawings>

410: receiver 420: storage

430: search unit 440: display unit

450: code generator 460: transmitter

The present invention relates to an apparatus and method for accessing multimedia content, and more particularly, allows a user who wants to access a multimedia content stored in correspondence with RFID to display and search a part of the multimedia content. An apparatus and method for accessing a multimedia content for transmitting RFID of the multimedia content selected by the present invention.

In the past, the Internet, which was confined to a specific class, became widespread through the implementation of the Web, which had a great impact on the digital industry as a whole. Internet-based services and content distributed through the Internet have become the yardstick for the digital industry in the 21st century. In addition, as the multimedia of contents has been realized through the high speed of the internet network, mobile phones, PDAs, notebooks, etc., multimedia has become an essential item, not an option.

Meanwhile, the concept of computer-based information communication is changing to the concept of ubiquitous. Ubiquitous is a Latin word meaning that it exists anytime, anywhere. It means an information and communication environment where users can freely access the network regardless of the network or computer.

1 illustrates the evolution of digital information appliances. The 1980s was the era of computing networks, where personal computers (PCs), laptops, mainframe computers and workstations exchanged information over networks. This has been limited in its use, such as laboratories or offices.

But in the 1990s, the Internet grew. As a result, interest in home stations has gradually increased, and the Internet, which has been confined to research institutes and offices, has been introduced to individuals and homes.

In the 2000s, the development of wireless networks has become prominent, and the transmission speed of wired networks has grown dramatically. As a result, as mentioned above, the distribution of large-capacity multimedia contents is in full swing, and research on digital broadcasting is actively progressing. In addition, some services are reaching commercialization. On the other hand, many home appliances are changing to information appliances under the ubiquitous concept. Digital information can now be sent and received not only through computers and workstations, but also through digital TVs, mobile phones, video phones, and smartphones, and between home appliances such as refrigerators, microwaves, and air conditioners. It is now possible to send and receive information.

The key to all this ubiquitous computing is Radio Frequency Identification (RFID).

2 is a conventional RFID system in which a RFID system includes a transponder 21 for storing unique information, a transceiver (reader or reader) 22 having a read and decrypt function, and a server (host computer) 23 , Network and applications (ERP, SCM).

Transponder 21, commonly called a tag, is composed of an IC chip and an antenna and has various shapes and sizes. Transponder 21 implanted under the skin to track the animal is as small as pencil lead diameter is only 1cm in length. The main functions of the IC chip are data storage, memory size (25 bit ~ 512 kb or more), memory type (read only, read and write type, write once and read multiple times), memory type (EEPROM, FRAM). ) Price varies.

The RFID system may be classified into an inductively coupled method and an electromagnetic wave method according to a wireless access method. The mutual induction method is short-range (within 1m), the electromagnetic wave method is used for medium and long distance RFID, the mutual induction method uses a coil antenna and the electromagnetic wave method uses a high frequency antenna to wirelessly connect to each other.

In mutual induction, the transponder 21 is operated almost manually. That is, all the energy required for the operation of the IC chip of the transponder 21 is supplied by the transceiver 22. Thus, the antenna coil of the transceiver 22 generates a strong magnetic field in the surrounding area. A portion of the emitted magnetic field generates an inductive voltage at the coil antenna of the transponder 21 away from the transceiver 22, rectifies and supplies it with energy for the IC. The electromagnetic wave transponder 22 does not receive enough power to drive the IC chip from the transceiver 22, so that it may include an additional battery for long-range recognition (active).

The transceiver 22 and the transponder 21 process baseband data using various digital codings. The wireless signal is mainly converted into a high frequency signal and transmitted using a basic three digital modulation schemes, namely, Amplitude Shift Keying (ASK), Frequency Shift Keying (FSK), and Phase Shift Keying (PSK). However, in a specific frequency band (UHF band of the United States), only a specific modulation scheme is required to reduce the human body influence of electromagnetic waves or interference with other communication systems, and the most widely used is spread spectrum (SS). Among the frequency spreading methods, a direct sequence (DS) used for a CDMA mobile phone or a wireless LAN and a frequency hopping (FS) used for Bluetooth are mainly used. However, applying such a modulation scheme to a tag requires a more complicated circuit and increases the price, so in practice, only the transceiver 22 uses the modulation scheme, and the transponder 21 covers the entire frequency of the frequency spread. And transmit the signal using ASK.

In addition, various signal processing is performed to increase the reliability of data information, such as an error rate reduction method using a method such as cyclic redundancy check (CRC), Aloha or the like used in a wireless LAN to distinguish several transponders 21. An anti-collision method using a similar method to Carrier Sense Multiple Access (CSMA), a data security method using a symmetric or asymmetric encryption algorithm to protect data, and the like are applied. In particular, this signal processing depends on the functionality of the memory of the transponder 21.

On the other hand, the transponder 21 can be used to access the data stored in the server 23, the search is not easy when there is a lot of stored data. That is, when a large number of multimedia content is stored in the server, the user can simply access only by using the transponder 21, and the search problem remains. Therefore, there is a need for a method that can be accessed and recalled by simply storing RFID after multimedia content is stored.

An object of the present invention is to display a part of the multimedia content to a user who wants to access the multimedia content stored in correspondence with the RFID.

In addition, an object of the present invention is to transmit the RFID of the multimedia content selected by the user among the retrieved multimedia content.

The objects of the present invention are not limited to the above-mentioned objects, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, an apparatus for accessing multimedia content according to an embodiment of the present invention includes a receiver for receiving an instruction to switch an offset value, and searching for a stored thumbnail corresponding to the offset value converted according to the received command. A search unit, a display unit for displaying the retrieved thumbnail and a transmission unit for transmitting an offset value corresponding to the thumbnail selected by the user among the displayed thumbnails with the RFID of the device.

A method for accessing multimedia content according to an embodiment of the present invention comprises the steps of: receiving a command for switching an offset value, retrieving a stored thumbnail corresponding to the offset value converted according to the received command, and searching for the retrieved thumbnail. And displaying an offset value corresponding to the thumbnail selected by the user among the displayed thumbnails together with the RFID.

Specific details of other embodiments are included in the detailed description and the drawings.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

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

3 is a diagram illustrating an RFID system according to an exemplary embodiment of the present invention, in which an RFID system (hereinafter, referred to as a content retrieval device) 310 and a transceiver (hereinafter, referred to as a reader) 320 are provided for accessing multimedia content. , A display device 330, a network 340, and a server 350.

The content retrieval apparatus 310 is a device in which a tag composed of an IC chip and an antenna is embedded, and the tag stores its RFID and uses the power source using its own power source or a radio wave received from the reader 320. And transmits its RFID and other information to the reader 320. The content retrieval apparatus 310 of the present invention includes a display unit. The user may search for multimedia content stored in the server 350 by using thumbnails of the multimedia content displayed on the display unit.

The RFID is a start address where the multimedia content is stored in the storage area of the server 350 and the user can search for the multimedia content stored in the server 350 by changing an offset value which is information added to the RFID.

The thumbnails have respective offset values. When the thumbnail being displayed is selected by the user, the tag transmits the offset value of the thumbnail to the reader 320 along with its RFID. Here, the thumbnail is stored in the content retrieval device together with the offset value, and may be received from a separate storage device using a wired or wireless communication means.

Meanwhile, the thumbnail may be stored together with the address where the multimedia content is stored, not the offset value. That is, when the offset value is stored, the content retrieval apparatus transmits the offset value selected by the user to the reader 320 and causes the server 350 to transmit the multimedia content stored at the position moved by the offset value to the display apparatus 330. When the thumbnail is stored with the address, the multimedia content stored in the storage area of the server 350 or the multimedia content stored in the plurality of servers 350 may be transmitted to the display device 330.

As described above, the content retrieval device 310 is a device with a built-in tag is preferably a device that can be carried by the user, as well as mobile phones, PDAs, laptops, home pads, wall pads, The tag may be implemented by attaching a tag to a device having a display unit such as an integrated remote controller.

The reader 320 receives the RFID and the offset value of the content retrieval device 310 from the content retrieval device 310 and transmits the RFID and offset values to the display device 330. In addition, the reader 320 may also serve to supply power by using radio waves to a tag of the content retrieval apparatus 310 that is not provided with its own power source.

The reader 320 may communicate with the display apparatus 330 by using a wireless or wired communication means to transmit an RFID and an offset value, or may be embedded in the display apparatus 330.

The display device 330 receives the RFID and the offset value of the tag embedded in the content retrieval device 310 from the reader 320, transmits the RFID and the offset value to the server 350, and displays multimedia content corresponding thereto. The display apparatus 330 includes a display unit capable of displaying multimedia content, a decoding unit, a first communication unit for communication with a reader, and a second communication unit for communication with a server.

The display unit of the display device 330 serves to display multimedia content such as LCD and CRT. The multimedia content received from the server 350 is properly decoded in accordance with the format of the corresponding content by the decoding unit and displayed through the display unit. The multimedia content displayed includes still images and moving images.

The first communication unit uses the reader 320 using communication methods such as infrared communication, Bluetooth, home RF, wireless LAN, Ethernet, USB, IEEE 1394, serial communication, parallel communication, and internal bus communication. And receive RFID and offset values from the reader 320.

The second communication unit communicates with the server 350 using a communication method such as home RF, wireless LAN, or Ethernet, and receives multimedia content from the server 350.

The function of the display device 330 may be implemented by a device having a display unit such as a digital TV, a desktop, a laptop, and a PDA.

The network 340 relays information and data flow between the display device 330 and the server 350, and the above-described communication method such as home RF, wireless LAN, or Ethernet may be used.

The server 350 receives the RFID and the offset value from the display device 330, and transmits corresponding multimedia content to the display device 330 in response. Here, the RFID is the start address of the storage area in which the multimedia content is stored. The address of the storage area varies according to the change of the offset value, and the server 350 displays the multimedia content stored in the address of the offset value based on the RFID. 330 is transmitted.

The server 350 may store a table indicating the address of the multimedia content according to the offset value of the RFID. In order to provide multimedia contents based on the conversion of offset values based on RFID, physical and logical storage areas should be identical. In other words, the server 350 is provided with a plurality of hard disks, and in order to search for multimedia contents stored in different hard disks, it is difficult to search using only one address corresponding to RFID.

Therefore, if a table indicating the address of the multimedia content according to the offset value of the RFID is stored in the server 350, the server 350 searches for the multimedia content stored in physically and logically different storage areas with reference to the table. It can be transmitted to the display device, it is also possible to extract and transmit from other devices on the network.

In addition, the server 350 may receive an address where RFID and multimedia content are stored from the display device 330, and search for multimedia content using only the received address. Therefore, when receiving the address where the multimedia content is stored, the server 350 transmits the multimedia content stored in the received address without searching the table.

4 is a block diagram of an apparatus for accessing multimedia contents according to an embodiment of the present invention. The apparatus for accessing multimedia contents, that is, the content search apparatus 310 may include a receiver 410, a storage 420, and a searcher ( 430, a display 440, a code generator 450, and a transmitter 460.

The storage unit 420 stores a thumbnail of the multimedia content corresponding to the offset value.

Thumbnails are approximate images of still or moving images that allow a user to search without having to remember the file name of the multimedia content. That is, the thumbnail is an image file having a small capacity displayed through the display unit 440. When the multimedia content is a still image, the thumbnail may be generated by making it smaller. When the multimedia content is a video, the first screen of the video or After converting a screen designated by a user to a still image, the thumbnail may be generated again by making it smaller. In addition, the user may use a separate image selected by the user as a thumbnail without using the corresponding multimedia content.

The storage unit 420 may store the thumbnail in correspondence with the address where the corresponding multimedia content is stored, or may store a plurality of RFIDs. Here, the plurality of RFID includes not only RFID of the tag embedded in the device but also RFID of another tag, by which the user can use not only the multimedia content stored in the server 350 but also the multimedia content stored by another user. Can also be accessed.

The thumbnail may be stored in the storage unit 420 by a separate writer (not shown). The writer may be connected to the server 350 through a predetermined communication means. If the user stores one or more multimedia contents in the server 350 and then approaches the content retrieval apparatus 310 to the writer, the server 350 The thumbnail corresponding to the multimedia content stored in the is stored in the storage unit 420 of the content retrieval apparatus 310 through the writer. The writer is a device capable of communicating with the content retrieval device 310, similar to the reader 320, and may include a function of a writer in the reader 320.

The receiver 410 serves to receive an offset value change command from the user. The receiver 410 may be in the form of a button or a wheel, and the user may change the offset value by using the button or the wheel. That is, the user inputs a switch command to display the thumbnails stored before or after the thumbnails currently displayed through the display unit. If the thumbnails are stored together with the storage address of the corresponding multimedia content, the address is changed. will be.

The received offset value is transmitted to the searcher 430, and the searcher 430 searches for and extracts thumbnails of the multimedia content stored in the storage 420 so that the display unit 440 is displayed.

The display unit 440 serves to display thumbnails of multimedia contents. The user may input an offset shift command through the receiver 410, and thus, the user may select a multimedia content that he / she wants using thumbnails of the displayed multimedia content.

When the thumbnail is selected by the user, the search unit 430 transmits the corresponding offset value or address to the code generator 450.

The code generator 450 generates a code to be transmitted to the reader 320 by adding an offset value or an address corresponding to the thumbnail of the multimedia content selected by the user to the RFID. Therefore, the code generator 450 may store the RFID and generate the code by simply adding an offset value or an address. If the code generator 450 generates an offset value or address together with one of a plurality of RFIDs stored in the storage unit 420, When received from the searcher 430, a code is generated by adding an offset value or an address to the received RFID. The generated code is transmitted to the transmitter 460.

The transmitter 460 transmits the code received from the code generator 450 to the reader 320. The transmitter 460 corresponds to the coil antenna of the tag. When the tag of the content retrieval device does not have its own power supply, the transmitter 460 generates a voltage using a magnetic field generated by the reader 320, rectifies it, and supplies the voltage to the IC chip. It can also play a role.

5 is a table illustrating addresses of multimedia contents according to offset values of RFID according to an embodiment of the present invention.

The table including at least one of an RFID, an offset, and an address is information stored in the server 350, and the server 350 searches for the corresponding multimedia content using a code received from the display apparatus 330. That is, the server 350 determines whether the received code is a combination of RFID and offset or a combination of RFID and address, and then searches for multimedia content accordingly.

The RFIDs 510a and 520a are starting addresses 510b and 520b of a storage area in which multimedia contents are stored, and the table basically includes starting addresses 510b and 520b for the plurality of RFIDs 510a and 520a. Accordingly, the server 350 searches for and extracts multimedia content corresponding to the offset value based on the start addresses 510b and 520b. This is applicable when there is only one physical and logical storage area. If there are a plurality of hard disks of the server 350, the multimedia content cannot be searched based only on offset values based on the start addresses 510b and 520b. Thus, a stored address can be given for some or all of the content and added to the table. Accordingly, the server 350 may search for and extract multimedia content stored in a physically and logically separate storage area. The server 350 may search for and extract multimedia content stored in another network 350 connected to the network and then receive the display device 330. ) Can be sent.

6 is a flowchart illustrating a method for accessing multimedia content according to an embodiment of the present invention.

In order to access the multimedia content, the content retrieval apparatus 310 first receives a command for switching the offset from the user (S610). Accordingly, the search unit 430 searches for the storage unit 420 and extracts thumbnails of the corresponding multimedia contents (S620). The command for switching the offset simply refers to a thumbnail located before or after the currently displayed thumbnail, and the user's switching command means extraction according to the order of storing the thumbnails. That is, while the user presses a button or operates a wheel provided in the device, the thumbnails stored in the storage unit 420 may be searched in the order of storing.

The extracted thumbnail is transmitted to the display unit 440, and the display unit 440 displays a thumbnail of the received multimedia content (S630). The user inputs an offset shift command using the receiver 410, and accordingly, the user can search for multimedia content that he / she wants by using the thumbnail that is converted and displayed.

Thus, when a specific thumbnail is selected by the user and a selection command is received (S640), the search unit 430 checks the offset value of the corresponding thumbnail and transmits it to the code generator 450. In addition, the code generator 450 receiving the offset value of the thumbnail generates a code by adding the offset value received to the RFID of the tag stored therein and transmits the code to the transmitter 460.

In this case, when a plurality of RFIDs are stored in the device and the displayed thumbnails are not thumbnails of their own RFIDs, the search unit 430 transmits the corresponding RFIDs and offset values to the code generator 450, and the offsets. Instead of the value, you can also pass the address where the multimedia content is stored.

The transmitter 460 transmits the code received from the code generator 450 to the reader 320 (S650). At this time, when the tag embedded in the content retrieval apparatus 310 is a passive type without its own power supply, the transmitter 460 is a coil antenna and drives the IC chip using a voltage generated by a strong magnetic field of the reader 320. When the code is transmitted and the built-in tag is an active type having its own power supply, the transmitter 460 transmits the code using electromagnetic waves as a high frequency antenna.

The reader 320 receiving the code transmits it to the display apparatus 330, and the display apparatus 330 transmits it to the server 350 through the network 340 again. Thus, the server 350 checks the start address where the corresponding multimedia content is stored by referring to the RFID included in the received code, extracts the multimedia content stored at the address separated by the offset value, and transmits it to the display device 330. do.

The display device 330 that receives the multimedia content from the server 350 displays the received multimedia content. The display device 330 may display a plurality of multimedia contents depending on whether it is implemented.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

According to the apparatus and method for accessing multimedia contents of the present invention as described above, there are one or more effects as follows.

First, there is an advantage that the user can easily search by displaying a part of the multimedia content to the user who wants to access the multimedia content stored corresponding to the RFID.

Second, there is an advantage in that it is possible to easily display the selected multimedia content by transmitting the RFID of the multimedia content selected by the user of the searched multimedia content.

Claims (5)

A receiving unit for receiving an instruction to switch the offset value; A retrieval unit for retrieving stored thumbnails corresponding to offset values converted according to the received command; A display unit configured to display the retrieved thumbnail; And And a transmitter configured to transmit an offset value corresponding to a thumbnail selected by a user among the displayed thumbnails together with the RFID of the device. The method of claim 1, And the RFID is information corresponding to a start address of the multimedia content stored for the thumbnail. The method of claim 2, And the offset value is information corresponding to an address at which multimedia content located in an area after the start address is stored. Receiving a switch command of an offset value; Retrieving a stored thumbnail corresponding to the offset value converted according to the received command; Displaying the retrieved thumbnail; And Transmitting an offset value corresponding to the thumbnail selected by the user among the displayed thumbnails together with the RFID. The method of claim 4, wherein And wherein the transmitted RFID and offset values are information for retrieving an address where stored multimedia content is stored for the selected thumbnail.

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